TA8800 ,PLL PIF/SIF IC FOR TV/VTRfeatures : “1M1 l! ll l]a Complete synchronous detection function with PLL circuita 3-stage IF ampl ..
TA8800N ,PLL PIF/SIF IC FOR TV/VTRTA8800NTARRnnN.IvvvPLL PIF/SIF IC FOR TV/VTRThe TA8800N is a PIF/SIF IC built in a completesynchron ..
TA8801AN ,VIDEO/CHROMA/DEFLECTION PROCESSOR IC FOR NTSC COLOR TVTA8801ANTA8801AN is an integrated circuit for NTSC color TV,which has a function of Video/Chroma/De ..
TA8804F ,FM DEMODULATION IC FOR BROADCASTING SATELLITE RECEIVERJAN-UQ-UZ 11:19 FR(hFfWiWh ELECTRONIC +9493593953 T-473 P.02 F-cetINTEGRATED CIRCUIT TA8804 FTOSHIB ..
TA8805F ,FOR LCD TVS, PIF AND SIF SYSTEMTA8805F,TA1207F TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC TA8805F,TA1207F FOR ..
TA8805F ,FOR LCD TVS, PIF AND SIF SYSTEMBLOCK DIAGRAM (TA8805F)
TC648BEUA713 , PWM Fan Speed Controllers With Auto-Shutdown, Fan Restart and FanSense™ Technology for Fault Detection
TC648VOA , Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648VOA , Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648VOA , Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC648VOA , Fan Speed Controller with Auto-Shutdown and Over-Temperature Alert
TC649EOA , PWM Fan Speed Controller with Auto-Shutdown and FanSense™ Technology
TA8800
PLL PIF/SIF IC FOR TV/VTR
TOSHIBA TA8800N
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8800N
PLL PIF/SIF IC FOR TV/VTR
The TA8800N is a PIF/SIF IC built in a complete
synchronous detection function with PLL circuit.
The IC package has its size reduced by employment of
shrink-type 24 pins, contributing to circuit board size
reduction.
FEATURES
The PIF circuit has the following features :
It Complete synchronous detection function with PLL circuit
It 3-stage f amplifier with variable gain
It Double time constant for AGC filter for faster AGC
responses
AGC of peak-detection type SDIP24-P-300-1.78
Single-polarity AFT Out voltage . .
AFT defeat function provided Weight . 1.22g (Typ.)
Reverse RF AGC supplied to tuner
The SIF circuit has the following features :
0 IF amplifier with variable gain
It Quadrature-type detection circuit
0 Use of a ceramic discriminator device makes the SIF circuit adjustment-free.
BLOCK DIAGRAM
_ PLL . F
AFT 2nd Video AFT Synchronous Loop Limiter SIF RFAGC
1st AGC Coil AGC Out Out Detection VCO Coil Filter In Out Delay
(G) (a (ra) GD a (ii) (ii) (i3) (ii) (ii) GAD Cs)
I I _ I_ -l
VIDEO I J l
AFT AMPLIFIER LOCK " SWITCH
1--DETEcnoN LIMITER
AMPLIFIER
l SIF d SIF FM
DETEC- - DETEC-
RF IF TION - AGC TION
AGC AMPLIFIE
Q) Q) (3) Q9 LO (9 (7) Q9 (9) LIP) Q9 Q9
AGC RFAGC PIF PIF In GND SIF In SIF Audio SIF FM. Limiter
In Out Vcc AGC Out Vcc Detr,tion Out
98091 OEBA2
O TOSHIBA is continually working to improve the quality and the reliability of its products. Nevertheless, semiconductor devices in general can
malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing
TOSHIBA products, to observe standards of safety, and to avoid situations in which a malfunction or failure of a TOSHIBA product could cause loss
of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified
operating ranges as set forth in the most recent products specifications. Also, please keep in mind the precautions and conditions set forth in the
TOSHIBA Semiconductor Reliability Handbook.
0 The products described in this document are subject to the foreign exchange and foreign trade laws.
0 The information contained herein is presented only as a guide for the aprlications of our products. No responsibility is assumed by TOSHIBA
CORPORATION for any infringements of intellectual property or other rights 0 the third parties which may result from its use. No license is granted
b implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others.
0 T e information contained herein is subject to change without notice.
1999-03-1 2 1/21
TOSHIBA
TA8800N
TERMINAL FUNCTION
[Elly PIN NAME FUNCTION
1 AGC In AGC input pin. Supply Video Out (pin 21) signal to this pin. This pin
generates AGC voltage from the Video Out (pin 21) signal.
2 RF AGC Out Tuner AGC voltage output pin. Connect this pin to the tuner.
Tuner AGC voltage delay adjustment pin. To this pin, supply DC
13 RF AGC Delay voltage for adjusting the AGC delay.
PIF circuit power supply pin. To this pin, supply external DC voltage
(9Vi10%). External signals could be mixed into the IC, causing various
characteristics to be deteriorated. To prevent it, insert the following
3 PIF VCC trap filters between the external power supply and this pin :
PIF carrier frequency trap filter
Horizontal scanning frequency (fH) trap filter
In the sample circuits shown in page 12 of this document, the trap
filters have inductance 68prH.
Input pins for picture intermediate frequency amplifier. The amplifier
4 PIF In 1 . . . . . . . .
5 PIF In 2 input stage IS a differential amplifier. The standard input signal level
IS 84dBp1/.
6 'li', tel PIF circuit GND and SIF circuit GND pins.
7 SIF In SIF circuit input pin. The standard input signal level is 75dB/N. The SIF
circuit has an AGC range of approximately I10dB.
8 SIF AGC SIF circuit AGC filter pin. Insert a capacitor between this pin and GND.
Audio signal output pin. The standard output level is 1Vp-p. Supply
9 Audio Out this Signal to the de-emphasis circuit. The de-emphasis circuit has the
following time constant :
75ps for NTSC method, 50prs for PAL method
Audio detection circuit power supply pin. To this pin, supply external
DC voltage (9V1 10%). External signals could be mixed into the IC,
causing various characteristics to be deteriorated. To prevent it, insert
the following trap filters between the external power supply and this
10 SIF Vcc pin :
PIF carrier frequency trap filter
Horizontal scanning frequency (fH) trap filter
In the sample circuits shown in page 12 of this document, the trap
filters have inductance 68/1H.
1999-03-1 2 2/21
TOSHIBA TA8800N
K'C'J“ PIN NAME FUNCTION
Generate a signal with the phase shifted 90 degrees necessary for FM
detection (Audio detection) and supply it to this pin.
Insert a capacitor between this pin and Limiter Out (pin 12) and also
insert a resonator between this pin and GND. Thus, a phase difference
of 90 degrees is generated between pin 12 and this pin.
If a ceramic resonator is used, adjustment is not necessary when
11 FM Detection In assembling the FM detection circuit (Audio detection circuit) (that is, it
can made adjustment free). To demodulate multiplexed Audio signals,
connect a resistor in parallel to the resonance circuit. It reduces Q of
the resonance circuit and expands the frequency band.
The Audio muting mode is set under the following conditions :
DC voltage at pin11S0.3V.
In the Audio muting mode, the pin 12 DC voltage is=4.5V.
- --------------_ A $511113: Tia-tWai-i- -atinrtFn- , -GGGGGcTdfr%aGarTWs- 'p'i'n'"
and FM Detection In pin (pin11).
In the Audio muting mode, the DC voltage of this pin is
approximately 4.5V.
SIF detection output pin. Insert the following filters between this pin
and Limiter In pin :
4.5MHz BPF for sampling SIF detection signals
fH (horizontal scanning frequency) trap filter
15 Limiter In Amplitude limiter input pin. The standard input level is 100dBpU.
PLL circuit loop filter pin. Insert a capacitor and resistor between this
16 Loop Filter pin and GND. The resistance and capacitance determine the loop filter
time constant.
VCO coil pins. Adjust the resonance frequency by changing the
variable capacitor in the IC. The frequency adjusting range should be
17 VCO Coil 1 as follows :
18 VCO Coil 2 When the resonance circuit has capacitor of 30pF and resonance
frequency of 58.75MHz, the frequency should be adjusted to
2--3MHz.
PLL synchronous detection circuit filter pin. This is the pin of the filter
used to detect the PIF detection output signal amplitude average.
Insert a capacitor between this pin and GND.
12 Limiter Out
14 SIF Out
PLL Synchronous
9 Detection
1999-03-12 3/21
TOSHIBA TA8800N
m: PIN NAME FUNCTION
AFT voltage output pin. The AFT voltage is output with a single
20 AFT Out polarity. When a resistor of 5.1kQ is connected between the AFT Coil
pin (pin 23) and GND, the AFT function is defeated.
21 Video Out Pin for outputting video signal after PIF signal detection. The standard
output level IS 2Up-p.
AGC circuit filter pins. Insert a resistor and capacitor between pin 22
22 2nd AGC . . .
24 1st AGC and GND, and a capacitor between pin 24 and GND. This IC uses a
peak-type AGC. The PIF circuit has a 3-stage amplifier.
Pin for connecting the AFT coil. Insert an AFT coil, capacitor, AFT
23 AFT Coil defeat switch, and resistor between this pin and GND. For AFT defeat,
connect a 5.1kQ resistor between this pin and GND.
TERMINAL INTERFACE CIRCUIT
Ir 1: l Cl <
s' x + d,
AGC® x tt C32 ' '/2 a
(j) (ii)
T K N.
1r 7: 't Ti
J w" nn m (ii)
nn M @
1999-03-12 4/21
1999-03-12 5/21
I77 Ar
DETECTION
DETECTION
TOSHIBA
TA8800N
TOSHIBA
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 15 V
Power Dissipation PD (Note) 1.4 W
Operating Temperature Topr - 20--65 "C
Storage Temperature Tstg - 55--150 ''C
(Note) When using the device at above Ta=25°C, decrease the power dissipation by 11.2mW
for each increase of 1°C.
RECOMMENDED SUPPLY VOLTAGE
KILL“ PIN NAME MIN. TYP. MAX. UNIT
3 PIF VCC
10 SIF Vcc 8.1 9.0 9.9 v
ELECTRICAL CHARACTERISTICS
DC CHARACTERISTICS (Unless otherwise specified, VCC=9V, Ta =25°C)
TA8800N
CHARACTERISTIC SYMBOL (ll] TEST CONDITION MIN. TYP. MAX. UNIT
Power Current PIF IPIF 11.5 23 34.5 mA
1 (Note)
Power Current SIF ISIF 12.5 25 37.5 mA
V4 4.3 4.6 4.9
V5 4.3 4.6 4.9
V7 3.0 3.4 3.8
V9 4.3 4.6 4.9
Terminal Voltages V14 1 (Note) 2.6 2.9 3.2 V
V15 2.6 2.9 3.2
V15 3.7 4.0 4.3
V21 4.8 5.1 5.4
V23 3.5 3.8 4.1
(Note) PIF In : No
input. Pins 8, 11, 22, and 24 : GND
1999-03-12 6/21
TOSHIBA TA8800N
AC CHARACTERISTICS(Un|ess otherwise specified, Vcc=9V, Ta =25°C, specified coil used)
PIF stage
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Input Sensitivity Vin MIN 1 (Note 1) - 42 45 dB/A/
Maximum Input Vin MAX 1 (Note 2) 100 106 - dB/A/
. . . - o
D1fferent1a| Gain DG 1 (Note 3) 3.0 5.0 A:
Differential Phase Dp - 1.5 3.0 Q
No-Signal Level V21 1 (Note 4) 4.7 5.0 5.3 V
Sync. Tip Level VSYNC 1 (Note 5) 2.6 2.9 3.2 V
Picture Output VOUT 1 (Note 6) 1.7 2.0 2.3 Vp-p
Picture S/N Ratio S/N 1 (Note 7) 50 53 - dB
Carrier Suppression Ratio CL 1 (Note 8) 50 - - dB
Harmonic Suppression Ratio I 2nd 1 (Note 9) 50 - - dB
Intermediate Modulation I 920 1 (Note 10) 45 50 - dB
Video Frequency
Characteristics fc 1 (Note 11) 6 8 10 MHz
AGC stage
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN TYP. MAX. UNIT
IF AGC Range RIF AGC 1 (Note 12) 58 64 68 dB
f AGC Minimum Output " min 1 (Note 13) - - 3.7 V
IF AGC Maximum Output " max 1 (Note 14) 8.3 - - v
RF AGC Minimum Output VRF min 1 (Note 15) - - 0.5 V
RF AGC Maximum Output VRF max 1 (Note 16) 8.5 - - V
AFT stage
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
AFT Sensitivity AF/AV 1 (Note 17) - 20 25 kHz/V
AFT Center Voltage Vcent 1 (Note 18) 2.5 4.5 6.5 V
AFT Minimum Output VL 1 (Note 19) - 0.3 0.7 V
AFT Maximum Output VU 1 (Note 20) 8.3 8.6 - V
1999-03-12 7/21
TOSHIBA TA8800N
VCO stage
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
PulI-In Range 1 (H) pr1 1 (Note 21) - 500 - kHz
PulI-In Range 1 (L) pr1 1 (Note 22) - 500 - kHz
PulI-In Range 2 (H) prz 1 (Note 23) 500 750 - kHz
PulI-In Range 2 (L) prz 1 (Note 24) 500 750 - kHz
Hold Range (H) fhH 1 (Note 25) - 800 - kHz
Hold Range (L) th 1 (Note 26) - 800 - kHz
Control Sensitivity p 1 (Note 27) - 2.5 - MHz/V
SIF stage
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
FM Detection Output VOD 1 (Note 28) 350 450 600 mVrms
Input Sensitivity VLIM 1 (Note 29) - 35 45 dB/A/
AM Suppression Ratio AMR 1 (Note 30) 45 55 - dB
-3dB Band Width iAfG 1 (Note 31) 170 1110 - kHz
S/N Ratio S/N DET 1 (Note 32) 50 60 - dB
Distortion Rate kF AF 1 (Note 33) - 0.3 1.0 %
COIL ADJUSTMENT
This section explains how to adjust the VCO, AFT, and SIF coils. Be sure to adjust these coils before
measuring the IC characteristics.
1. Adjusting the VCO coil
The PIF In pins (pin4 and pin 5) in no-signal (no-input) state and connect the 2nd AGC pin (pin 22)
to GND.
Measure the Loop Filter (pin 16) DC voltage (VA).
Then, disconnect the 2nd AGC pin (pin 22) from GND and supply the following signal to the PIF In
pins (pins4 and 5) :
Carrier frequency : f0=58.75MHz
Signal amplitude=90dB/N
Now, measure the Loop Filter pin (pin 16) DC voltage VB and adjust the VCO coil so that VA=VB.
2. Adjusting the AFT coil
Supply the following signal to the PIF In pins (pins 4 and 5) :
Carrier frequency : fo = 58.75MH2
Signal amplitude=90dBpV
Then, turn the AFT Defeat switch (connected to pin 23) to OFF (open) and measure the AFT Out pin
(pin 23) DC voltage.
While observing the DC voltage changes, adjust the AFT coil. Determine the area the DC voltage
significantly changes and, within this range, further adjust the AFT coil until the following condition
is met :
AFT pin (pin 23) DC voltage=4.5V
1999-03-12 8/21
TOSHIBA TA8800N
3. Adjusting the SIF coil
Supply the following signal to the limiter In pin (pin 15) :
Carrier frequency : fo=4.5MHz
Signal amplitude=100dB/A/
Then, turn the Audio muting switch (connected to pin 11) to OFF (open) and measure the Audio
Out pin (pin 9) DC voltage.
While observing the DC voltage changes, adjust the SIF coil until the following condition is met :
Audio Out pin (pin 9) DC voltage=4.5V
MEASUREMENT CONDITIONS
< PIF circuit>
(Note 1) Input sensitivity
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75 MHz
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Change the input signal amplitude (level of signals supplied to pins4 and 5) and, when the
Video Out (pin 21) signal amplitude-- -3dB, measure the input signal amplitude. The
reference value (OdB) is the pin 21 signal amplitude when input signal amplitude=90dBpU.
(Note 2) Maximum input
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75MHz
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Change the input signal amplitude (level of signals supplied to pins4 and 5) and, when the
Video Out (pin 21) signal amplitude-- +0.5dB, measure the input signal amplitude. The
reference value (OdB) is the pin 21 signal amplitude when input signal amplitude=90dBpV.
(Note 3) DG and DP
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75MHz
Modulation signal=TV standard signal (video amplitude : sync amplitude=10 : 4), ramp
waveform signal.
Amplitude modulation factor : 87.5%
Signal amplitude=90dB/A/
Measure DG and DP of the Video Out (pin 21) signal using a vector scope.
(Note 4) No-signal level
Measure the video Out (pin 21) DC voltage when pins4 and 5 are in the no-signal state and
the 2nd AGC pin (pin 22) voltage=0V.
1999-03-12 9/21
TOSHIBA TA8800N
(Note 5)
(Note 6)
(Note 7)
(Note 8)
Sync. Tip level
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal=TV standard signal (video amplitude : sync amplitude=10 : 4), ramp
waveform signal.
Amplitude modulation factor : 87.5%
Signal amplitude=90dB/A/
Measure the DC level at the video Out (pin 21) Sync. Tip level.
Video output amplitude
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75MHz
Modulation signal=TV standard signal (video amplitude : sync amplitude-- 10 : 4), ramp
waveform signal.
Amplitude modulation factor : 87.5%
Signal amplitude=90dBpV
Measure the video Out (pin 21) signal amplitude.
Picture Signal S/N ratio
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75MHz
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude (input signal level)--90dB/A/
Measure the Video Out (pin 21) signal amplitude V1 using an effective voltmeter. Then,
change the modulation factor to 0% and measure the Video Out (pin 21) signal amplitude
V2. Assign V1 and V2 to the following formula to get the picture signal S/N ratio :
S/N ratio=20eog (6 V1/V2) [dB]
Carrier suppression ratio
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 78%
Signal amplitude (input signal level)=90dBpV
Monitor the Video Out (pin 21) signal with a spectrum analyzer and measure the 15.75kHz
and 58.75MHz components. Assign these component values to the following formula to get
the carrier suppression ratio :
Carrier suppression ratio=208og (15.75kHz component/58.75MH2 component)
1999-03-12 10/21
TOSHIBA TA8800N
(Note 9)
(Note 10)
(Note 11)
Harmonic suppression ratio
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 78%
Signal amplitude=90dB/N
Monitor the Video Out (pin 21) signal with a spectrum analyzer and measure the 15.75kHz
and the second harmonic (58.75x2=117.5MHz) components. Assign these component values
to the following formula to get the harmonic suppression ratio :
Harmonic suppression ratio=20eog (15.75kHz component/second harmonic component)
Intermediate modulation
As the PIF In signal, supply the mixture of the following signals to pins4 and 5 :
SGI (frequency=58.75MHz (P), signal amplitude=90dBpV)
SG2 (frequency=54.25MHz (S), signal amplitude=80dBpV)
SG3 (frequency=55.17MHz (C), signal amplitude=80dBpV)
Then, supply external DC voltage to the 2nd AGC pin (pin 22). Monitor the Video Out (pin
21) signal waveform and adjust the DC voltage supplied to pin 22 so that the following
condition is met :
Sine wave signal bottom |eve|=Sync. Tip DC voltage
Next, monitor the Video Out (pin 21) signal with a spectrum analyzer and measure the
chrominance signal and 920kHz components. Calculate the intermediate modulation from the
following :
Intermediate modulation =chrominance signal component-920kHz signal component
Video frequency characteristics
As the PIF In signal, supply the following external signal to pins4 and 5 :
Frequency : fo=58.75MHz, Sine wave
Signal amplitude=90dB/N
Measure the 2nd AGC pin (pin 22) DC voltage.
Next, supply the same external voltage as this voltage to the 2nd AGC pin (pin 22) and
clamp it. Then, as the PIF In signal, supply the mixture of the following signals to pins4 and
SG1 (frequency=58.75MHz fixed, signal amplitude=90dBp1/)
SG2 (frequency=58.65 to 45.00MH2 sweeped, signal amplitude=70dB/zV)
Monitor the Video Out (pin 21) signal with a spectrum analyzer and measure the input
signal frequency when the signal amplitude is -3dB of the reference value. Calculate the
difference between the input signal frequency measured and 58.75MHz.
The reference value (OdB) is the pin 21 signal amplitude when inputting 58.65MH2.
1999-03-12 11/21
TOSHIBA TA8800N
(Note 12) IF AGC range
Assign the PIF circuit maximum input value and input sensitivity to the following formula to
get the IF AGC range :
IF AGC range=maximum input value-input sensitivity [dB]
(Note 13) IF AGC min. output
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MHz
Modulation signal frequency '. fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude=110dBpV
Measure the 2nd AGC pin (pin 22) DC voltage.
(Note 14) IF AGC max. output
Place pins4 and 5 in the no-signal state and measure the 2nd AGC pin (pin 22) DC voltage.
(Note 15) RF AGC min. output
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo=58.75MHz
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude=110dBpV
Connect the RF AGC Delay pin (pin13) to GND. Then, measure the RF AGC pin (pin 2) DC
voltage.
(Note 16) RF AGC max. output
Place pins4 and 5 in the no-signal state and connect the RF AGC Delay pin (pin13) to VCC-
Then, measure the RF AGC pin (pin 2) DC voltage.
1999-03-12 12/21
TOSHIBA TA8800N
(Note 17) AFT sensitivity
As the PIF In signal, supply the following external signal to pins4 and 5 :
Frequency : fo=58.75MHz, Sine wave
Signal amplitude=90dByV
Adjust the AFT coil so that the following condition is met :
4.4VSAFT Out pin (pin 20) voltageS4.6V
Then, measure the AFT Out pin (pin 20) voltage (V1).
Change the frequency to the following value :
Sine wave signal frequency = 58.75MHz + 20kHz = 58.77MHz
Then, measure the AFT Out pin (pin 20) voltage (V2).
Assign V1 and V2 to the following formula to get the AFT sensitivity :
AFT sensitivity=(AF/AV) =(58.77-58.75---20/l1/1 -U2l) [kHz]
(Note 18) AFT center voltage
Place pins4 and 5 in the no-signal state and connect the 2nd AGC pin (pin 22) to GND.
Then, measure the AFT Out pin (pin 20) DC voltage.
(Note 19) AFT min. output
As the PIF In signal, supply the following external signal to pins4 and 5 :
Frequency : fo=58.75MHz+50kHz=59.25MHz, Sine wave
Signal amplitude=90dB/N
Measure the AFT Out pin (pin 20) voltage.
(Note 20) AFT max. output
As the PIF In signal, supply the following external signal to pins4 and 5 :
Frequency : fo=58.75MHz-50kHz=58.25MHz, Sine wave
Signal amplitude=90dB/N
Measure the AFT Out pin (pin 20) voltage.
(Note 21) VCO pulI-in range 1 (H)
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MHz
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude=90dB/N
Supply external DC voltage to the PLL Synchronous Detection pin (pin 19) so that pin 19
voltage is 2V. Next, gradually decrease the carrier frequency from 62.00MHz to 58.75MHz.
Measure the carrier frequency when the Video Out pin (pin 21) starts generating a
horizontal blanking signal from the no-signal state.
Calculate the difference between this frequency and 58.75MHz.
1999-03-12 13/21
TOSHIBA TA8800N
(Note 22) VCO pull-in range 1 (L)
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude (signal Ievel)=90dBp1/
Supply external DC voltage to the PLL Synchronous Detection pin (pin 19) so that pin 19
voltage is 2V. Next, gradually increase the carrier frequency from 55.00MHz to 58.75MHz.
Measure the carrier frequency when the Video Out pin (pin 21) starts generating a
horizontal blanking signal from the no-signal state.
Calculate the difference between this frequency and 58.75MHz.
(Note 23) VCO puII-in range 2 (H)
Same as Note 21 above, except the following :
The PLL Synchronous Detection pin (pin 19) voltage should be 6V.
(Note 24) VCO puII-in range 2 (L)
Same as Note 22 above, except the following :
The PLL Synchronous Detection pin (pin 19) voltage should be 6V.
(Note 25) VCO hold range (H)
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude=90dB/N
Gradually increase the carrier frequency from 58.75MHz. Measure the carrier frequency when
the following changes start to occur :
PLL unlocked
The Video Out pin (pin 21) stops generating horizontal blanking signals.
The Video Out pin (pin 21) starts generating beat signals.
Calculate the difference between this frequency and 58.75MHz.
1999-03-12 14/21
TOSHIBA TA8800N
(Note 26) VCO hold range (L)
As the PIF In signal, supply the following external signal to pins4 and 5 :
Carrier frequency : fo = 58.75MH2
Modulation signal frequency : fm=15.75kHz
Amplitude modulation factor : 30%
Signal amplitude=90dB/N
Gradually decrease the carrier frequency from 58.75 MHz. Measure the carrier frequency
when the following changes start to occur :
PLL unlocked
The Video Out pin (pin 21) stops generating horizontal blanking signals.
The Video Out pin (pin 21) starts generating beat signals.
Calculate the difference between this frequency and 58.75MH2.
(Note 27) Control sensitivity
Place pins4 and 5 in the no-signal state, supply external DC bias voltage to the Loop Filter
pin (pin 16), connect the Loop Filter pin (pin 16) output to the spectrum analyzer, and then
perform the following measurements :
Adjust the Loop Filter pin (pin16) DC bias voltage so that the VCO oscillating frequency
=58.75MHz and measure the pin 16 voltage (V1).
Set the pin 16 voltage to (V1+O.2V) and measure the VCO frequency (F1).
Set the pin 16 voltage to (Vo-thav) and measure the VCO frequency (F2).
Assign F1 and F2 to the following formula to get the control sensitivity :
Control sensitivity-HIFI-Fi/OU) [MHz/V]
(Note 28) FM detection
As an SIF In signal, supply the following external signal to the Limiter Input pin (pin 15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude : 100dBp1/
Measure the amplitude of the signal output from the Audio Out (pin 9).
1999-03-12 15/21
TOSHIBA
TA8800N
(Note 29)
(Note 30)
Limiting sensitivity
As an SIF In signal, supply the following external signal to the Limiter Input pin (pin 15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude : 100dBp1/
Change the signal amplitude so that the Audio Out (pin 9) signal amplitude-- -3dB. Measure
the signal amplitude. The reference value (OdB) is the Audio Out (pin 9) signal amplitude
when the signal amplitude is 100dBpV.
AM suppression ratio
As an SIF In signal, supply the external signal to the Limiter In pin (pin15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude =100dBpV
Measure the signal amplitude root mean square value V1 of the signal output from the
Audio Out (pin 9).
Then, supply the external signal to the Limiter In pin (pin15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : AM (amplitude modulation)
Amplitude modulation factor : 30%
Signal amplitude =100dBpV
Measure the signal amplitude root mean square value V2 of the signal output from the
Audio Out (pin 9).
Assign V1 and V2 to the following formula to get the AM suppression ratio (AMR) :
AMR =20€og (VI/Va) [dB]
1999-03-12 16/21
TOSHIBA TA8800N
(Note 31) -3dB band width
As an SIF In signal, supply the following external signal to the Limiter In pin (pin 15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude=100dBpV
Measure the amplitude of the signal output from the Audio Out pin (pin 9). Using this value
as the reference (OdB), perform the following measurements :
Gradually increase the carrier frequency from the initial value (4.5MHz) so that the Audio
Out (pin 9) signal amplitude-- -3dB. Measure the current carrier frequency FAFh.
Next, gradually decrease the carrier frequency from the initial value (4.5MHz) so that the
Audio Out (pin 9) signal amplitude-- -3dB. Measure the current carrier frequency FAFI.
Assign FAFh and FAFI to the following formula to get the -3dil band width :
- 3dB band width = FAFh - FAFI [kHz]
(Note 32) Audio S/N ratio
As an SIF In signal, supply the following external signal to the Limiter In pin (pin15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude =100dBpV
When the FM factor is 25kHz/devi, measure the amplitude root mean square value (V1) of
the signal output from the Voice Out pin (pin 9). Next, when the FM factor is 0 (no
modulation), measure the amplitude root mean square value (V2). Assign V1 and V2 to the
following formula to get the Audio S/N ratio :
Audio S/N ratio=20eog (V1/V2) [dB]
(Note 33) Distortion rate
As an SIF In signal, supply the following external signal to the Limiter In pin (pin15) :
Carrier frequency : fo=4.5MHz
Modulation signal frequency : fm=400Hz
Modulation mode : FM (frequency modulation)
Frequency modulation factor : 25kHz/devi
Signal amplitude=100dBpV
Measure the distortion rate of the signal output from the Audio Out pin (pin 9).
1999-03-12 17/21
TEST CIRCUIT 1
DC/AC CHARACTERISTICS
V Limiter In
AFT DEFEAT Video Out AFT Out
Hritrt
AMPLIFIER
DETECTION VCO m
w 1 i —
- I m o
l SIF SIF FM
RF DETEC- DETEC-
TION ‘— AGC TION
LIMITER
AMPLIFIER
in’OOl
Jrfrtro
57110 0
L I_EHM!9
PIF In SIF In Audio Out
TABSOON—1 8
TOSHIBA
TA8800N
TA8800N
TOSHIBA
“I 2!)!
g MI Q 1% E
mo onpnv '— _‘
JN'OGL
6 l —N0088V1
USHHdWV
HBllWH
NOIiDfllaG
HDlIMS 03A J
Halil'ldwv
l— —l I
Vl GP 9L Ll Bl Iz 22 [2 Q9
~ :3 P r _______ . 8 T”; o
i n S::—- 8 I l D ‘n b
‘1 ’V o _, I I N r— ——-1 “m
I '2‘ 1: 1:) E) o o I I ' +.° . I m
"" +- o I I é u‘ "~
I: 1, o I I X .\, l I . N
\l I“ '0 L _________ J 7: I I ; 'l'l
'0 1 -n L- ___l
-n T_.L.L— “ 03A 11 :3
mo 03pm J.VBJECI uv
(33mm!) mds)
I .llnDUD NOILVDHddV
TA8800N
TOSHIBA
OZ—NOOBBVJ.
ICC mo 0!an "‘0
amw 3 0" anvau
ononv 5 §
r-— “1 .0 _. 1/0
I I o I o . » 3 o
l | _a O o O '0
I1: + ‘R f + ‘p _.
L J '71 “1 R _. 11 ‘
" " ~ m ’5 5T
U1 V‘V‘V
ddL "' ms:
Zl H 0D ? 8 (5) (Z) l
I L 39v
NOLL 39V __ NOIJ.
03130 03130 58
ws “5 |— :us I
L - 39v
130—0 «06 '
uaundwv J I .LJO-l
Nomauo
uauwn HDLIMS 03A
uaundwv “V
F“ _| LI i i
Q9 G9 @9 Ll Bl 6L oz :2 u Q79
o g g o
‘ r ——————— 1 b
6 S..—- 3 _. : : a + o _. :3 r: -__, "g
7: E) o o I I '1: '0 8 5: I , 7:
b 71 C +9 8 I | ‘l'l l _. 7r 5 | I m '11
# U IL _______ J j: b t I l _.
L: "1 03K — ‘" '71 ‘-— ———' E
Hur— 1"
ivadao 15v
_ ile mo 030m
3d“; N U)”
(uamuva ELLVIGEIWHBLNI)
z .LlnDHD NOILVDI'IddV
1999-03-12 20/21
TOSHIBA TA8800N
OUTLINE DRAWING
SDIP24-P-300-1.78 Unit : mm
24 13 Ci,
f-lf-Ir-Ir-lf-Irrelevant"-? d
L..JL_JL.JL_JL.JLJL.JL..JL~JL.JL.JL_J
h 22.5MAX "
22.0:02
cu., mi
4 l I F g tl.
x " cn
1.221TYP 1.0:0.1 H 0.46:tthl
" - r r. _ "IN IEOJSEE
Weight : 1.229 (Typ.)
1999-03-12 21/21
www.ic-phoenix.com
.
