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TA7766AF
FM PLL MPX (1,5V USE)
TOSHIBA TA7766AF
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7766AF
FM PLL MPX (1.5V USE)
The TA7766AF is an FM PLL MPX IC designed for low
voltage operation (1.5V), which is suitable for stereo
headphone radio and radio cassette equipments.
This can realize the low power dissipation.
FEATURES
0 LED driver for stereo indication (VLED=3--6V)
0 Adopting the LC type oscillator (fvco=456kHz)
9 Adjustable for Iamp-on sensitivity
Built-in compulsive monaural function
(VCO stop, pinO)
c Free running frequency monitor terminal
Pin. : fFREE=19kH2
SSOP16-P-225-1.00A
Weight : 0.14g (Typ.)
It Excellent low supply current
.' Icc=0.8mA (Typ.) (VCC= 1.5V, Ta =25°C)
It Operating supply voltage range
: VCC (opr) = 0.9~5V (Ta = 25°C)
It Stereo operating supply voltage range
: 1/cc(opr)=1--51/ (Ta = 25°C)
1 2001-06-25
TOSHIBA TA7766AF
BLOCK DIAGRAM
R-ch OUTPUT L-ch \l\//I%ONITOR VLED
ST / MONO
DECODER
(Note) pin@, ©, I?) are no connected.
APPLICATION NOTE
Input circuit
This circuit is composed of the inverted amplifier
as shown Fig.1.
In case of the large signal input, Rf (the external
resistance. in series) can reduce the voltage gain.
Lamp-on sensitivity and stereo/monaural
sensitivity
It is possible to adjust the Lamp-on sensitivity and
the stereo sensitivity by the external resistance
(RT), which is connected to the terminal pins).
The output current (IO) of the synchronous
detector is determined by the input pilot signal.
As the value of RT is larger, the Lamp-on
sensitivity and the stereo sensitivity become more
increasing, because the current (I1) of Q1 is
decreasing, and the current l2 is increasing.
However, in case that the terminal pin© is open,
the stereo sensitivity is too increasing, the stereo
switch remains turned-on, without pilot signal.
Therefore, the value of RT is efficient about
10--50kf).
36kn 'j.'.:
: VCO STOP SWITCH
(COMPULSIVE
MONAURAL)
: VCO MONITOR SWITCH
SYNCHRONOUS
DETECTOR
DRIVER
STEREO
3.3,UF
TOSHIBA
fVCO monitor
The LED terminal pinO can be used as fVCO
(19kHz) monitor terminal, in case that the
terminal pin. is open, as Fig.3.
Under unlocked condition, in case that the
terminal pin. is connected to GND, it can be
done, too.
In case that the LED indicator is not necessary, it
is better that the terminal pin. is open, because
of the save of the supply current.
Compulsive monaural function
In case that the terminal pin© is connected to
VCC as Fig.4, this item becomes compulsive
monaural mode. That causes the VCO stopping.
Connected as Fig.5, switchover between AM/FM
mode is possible with one-make switch.
Anti-birdy effect
TA7766AF has beat-prevent performance, because
switching wave (38kHz) hardly has a number of
odd harmonic frequency of 38kHz in internal
circuit.
MAXIMUM RATINGS (Ta = 25°C)
TA7766AF
BIAS OF
Ir" VCC
AM/FMIF
TA7765AF
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 5 V
Lamp Current ILAMP 5 mA
Lamp Voltage VLAMP 6 V
Power Dissipation PD (Note) 350 mW
Operating Temperature Topr -25--75 "C
Storage Temperature Tstg - 55--150 'T
(Note) Derated above 25°C in the proportion of 2.8mW/°C.
3)TA7766AF
TOSHIBA
TA7766AF
ELECTRICAL CHARACTERISTICS (Unless otherwise specified, Ta=25°C, VCC= 1.5V, fm =1kHz)
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
Supply Current ICC - At lamp off - 0.8 1.6 mA
Input Resistance RIN - - 36 - k0
Output Resistance ROUT - - 15 - k0
Max Composite V; (MAX) L+R=90%, P=10%, THD=5%
Signal Input Voltage (STEREO) SW5-9LPF ON
fit. l; 98mVrms fm =100Hz - 30 -
Separation Sep - SVT/HIRLEB: 50m fm =1kHz 22 35 - dB
SW5-9LPF ON fm =10kHz - 30 -
Total Monaural (MONAURAL) Sw1-9RLED--500n - 0.2 1.5
Hérmoh'c THD - L + R = 90mVrms, P =10mvrms %
Distortion Stereo SWI-9RLED = 50kn - 0.4 -
(STEREO)
SWS-al-PF ON
Voltage Gain GV - SW1-9RLED--500n -4 -2 1 dB
Vin =100mVrms
Channel Balance CB - SVI/I-HUD---) - 0 2.0 dB
Lamp ON Sensitivity VL (ON) Pilot SWI-9RLED = SOkQ - - 5 V
Lamp OFF Sensitivity VL(OFF) input SW1-9RLED=500n 7 - - m rms
Stereo Lamp
Hysteresis VH - to turn-off from turn-on - 3 - mVrms
Capture Range CR - P=10mVrms - i3 - %
L R = 90mV
Carrier Leak 19kHz + rms - 30 -
o e 38kHz SW1-9RLED=50kn - 50 -
P =10mVrms, L + R = 80mVrms
SCA Rejection Ratio SCA Rej - SCA=10mVrms, fSCA=67kHz - 70 - dB
SWI-9RLED = 50kn
. . . Vin =100mVrms, R9 = 6200
Signal To Noise Ratio S/N - SWI-9RLED= 5000 - 65 - dB
(Note) Carrier leak of 38kHz is only carrier.
4 2001-06-25
TOSHIBA TA7766AF
DC CHARACTERISTICS
(VCC= 1.5V, Ta =25°C, terminal voltage at no signal)
PIN No. SYMBOL TYP. UNIT
PIN O) (Vcc) VI 1.5 v
PIN © (INPUT) v2 0.6 v
PIN (3) (LPF1) v3 0.7 v
PIN © (NC) v4 - v
PIN © (VCO) v5 0.8 v
PIN © (VCO ADJ) 1/6 1.5 v
PIN © (GND) v7 0 v
PIN. (LED GND) v8 0 v
PIN (9) M ADJ) v9 0.05 v
PIN 00 (LED) v10 - v
PIN © (LPF2) VII 0.7 v
PIN 02 (NC) v12 - v
PIN® (VCO STOP) v13 - v
PIN 03> (NC) v14 - v
PING (L-ch OUTPUT) v15 0.65 v
PING (R-ch OUTPUT) V16 0.65 v
5 2001-06-25
TOSHIBA
TA7766AF
TEST CIRCUIT
'r"---''---'--------'---'--------'--,---,'
sws " /
/ 3.3k0 Ss"-, Vout
LPF _t,iTi.'.',
SW4 J, #1
mg ji '-"'"'4iy-ovun,
SW3 MONITOR VCO MONITOR
u --osd
SW2 / o %C‘. iii
t 't Ir LED ts 19kHz
'rr,?, ii,', t + 5 F
J7 la 2 , ,,'
16 115 (ti) 49 cp, 0/ (ti) E
T A 7 7 6 6 A F l 5,'
1/ '? 'i) (Ci) (i) j AMP : TA75458P
Vin C -g+ Lt, LPF : FB-3604
2.2PF $1 I' SW3 (SUMIDA)
G 'e t,
a:,' l3 l MONITOR f=19kHz : 55dB (MIN.)
cl LED .
Vcc 0 o f=38kHz . 55dB (MIN.)
SW1 Lamp (stereo indicator) ON/OFF check
Lamp ON SW1 : SOkQ
Lamp OFF SW1 : 5000
SW2 VCO stop switch pin® connected to VCC (compulsive monaural)
SW3 VCO monitor At monitor mode, pin© is connected to the resistor (150k0) at
test circuit.
In case that the input has no pilot signal and pin. is connected
to GND, it is possible to check the VCO frequency, too.
SW4 Lout/Rout switchover
SW5 LPF switchover
(Note) In the test of ELECTRICAL CHARACTERISTIC
COIL DATA (Test circuit)
Monaural mode (Vin =100mVrms)
SW1 : 5000
Stereo mode (L+R=90mVrms, P=10mVrms) SW1 : 50kn
Co (pF) f 00 TURN
1-3 (kHz) 1-3 1-2 2-3 4-6
180 455 110 146 6 13
SUMIDA ELECTRIC Co., Ltd.
: 44M-037-935C
WITE : 0.07mm¢ UEW
TOSHIBA TA7766AF
CAPTURE RANGE & LOOK RANGE
ICC, V15, V16 - Vcc CR & LR
E a vcc=1.5v
e ICC w
" ------'" 4
U "” w,.....------" Ln
2; 0.8 l O
l >r‘7.
U,1 I - E
ll? I D x.
- E l: VIS, V16 m'a..'iii.
E C) ' J
g > ' g .5
8 g 0.4 Fy'
y, :'5 Vin=0 -
m n. C)
n. - :1
D D VCO ON a.
o 1 2 3 4 5 6 3
SUPPLY VOLTAGE VCC (V) 14 15 16 17 18 19 20 21 22
FREE RUNNING FREQUENCY fvco (kHz)
Sep, THD - fm GV - Vcc
Vcc=1-5V 1.2 93 MONO
60 L+R=90mVrm5 D 93 Vin=100mVrms
fi'; Pilot--10murms 1.0 F- > f=1kHz
19 a 0
(ir Sepl-rR - E a
US o O
a Sep.ft-9L 6 Ir., Lu
C) _ D 0 -
1: 2 S
g 4 g a
if, E > _
10 t 0 1 2 3 4 5 6
f? SUPPLY VOLTAGE VCC (v)
0.05 0.1 0.3 1 3 10
MODURATION FREQUENCY fm (kHz)
fvco - Vcc Sep, THD - fvco
iii Vcc=1.5V tii.
- L+R=90mvrms g
0 _ l-
y E; Pllot=10mVrms
.- 1:, a
fm=1kHz Q
C i) E
if, m e
D 1.f2
'dl .: u
“L < E
u D: C)
ir. S. E
c: re'
0 1 2 3 4 5 6 18.0 18.4 18.8 19.2 19.6 20.0
SUPPLY VOLTAGE VCC (V) FREE RUNNING FREQUENCY fvco (kHz)
7 2001-06-25
TOSHIBA
SEPARATION Sep (d8)
SEPARATION Sep
Sep, THD - Vin(L+ R)
Vcc=1.5V
L+R=90%
20 60 100 140 180 220 260
MAIN (L+ R) SIGNAL VOLTAGE
Vin (L+ R) (mVrms)
Sep - Ta
Vcc=1.5V
Pilot=10mVrms
L+ R=90mvrms
IC ONLY
-30 -10 10 30 50 70 90
AMBIENT TEMPERATURE Ta (°C)
TOTAL HARMONIC DISTORTION THD (%)
FREE RUNNING FREQUENCY fvco
TA7766AF
fvco - Ta
IC ONLY
-40 -20 0 20 40 60 80
AMBIENT TEMPERATURE Ta (°C)
TOSHIBA TA7766AF
PACKAGE DIMENSIONS
SSOP16-P-225-1.00A Unit : mm
16 9 -
H H H H H H H H ' n N
cu rn. N IE-?
fi?, 53: ts f,
co lft m cu
iii. T1 _,ii-",.i, bl bl H H______ lr, Ir.
0.6TYP ! l l 4d:0. 1 C, th2O)
v, .7MAX 's9,
" 3.2io.2 M g
CM "". .
[ a ii' 12
yeacassaail. ut" GI '1
1.C...y, T- O !
vgi." ir-
50' ' Jh525hh2
Weight : 0.14g (Typ.)
9 2001-06-25
TOSHIBA TA7766AF
RESTRICTIONS ON PRODUCT USE
000707EBA
OTOSHIBA is continually working to improve the quality and 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 comply with the standards of safety in making a safe
design for the entire system, and to avoid situations in which a malfunction or failure of such
TOSHIBA products 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 TOSHIBA products specifications. Also, please
keep in mind the precautions and conditions set forth in the "Handling Guide for
Semiconductor Devices," or "TOSHIBA Semiconductor Reliability Handbook" etc..
OThe TOSHIBA products listed in this document are intended for usage in general electronics
applications (computer, personal equipment, office equipment, measuring equipment, industrial
robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor
warranted for usage in equipment that requires extraordinarily high quality and/or reliability or
a malfunction or failure of which may cause loss of human life or bodily injury ("Unintended
Usage"). Unintended Usage include atomic energy control instruments, airplane or spaceship
instruments, transportation instruments, traffic signal instruments, combustion control
instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA
products listed in this document shall be made at the customer's own risk.
0 The products described in this document are subject to the foreign exchange and foreign trade
OThe information contained herein is presented only as a guide for the applications of our
products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of
intellectual property or other rights of the third parties which may result from its use. No
license is granted by implication or otherwise under any intellectual property or other rights of
TOSHIBA CORPORATION or others.
0 The information contained herein is subject to change without notice.
10 2001-06-25
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