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TA7792FTOSHIBA ?N/a143avaiAM/FM 1 CHIP TUNER SYSTEM IC (1,5V USE)
TA7792PTOSHIBAN/a25avaiAM/FM 1 CHIP TUNER SYSTEM IC (1,5V USE)


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TA7792F-TA7792P
AM/FM 1 CHIP TUNER SYSTEM IC (1,5V USE)
TOSHIBA
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA7792P, TA7792F
AM/FM 1 CHIP TUNER SYSTEM IC (1.5V USE)
The TA7792P, TA7792F are AM/FM 1 chip tuner system
(FM FRONT END+AM/FM IF) ICs, which are designed for
low voltage operation (1.5V, 3.0V). Those are especially
suitable for stereo headphone radio and radio cassette
recorder equipments. These item can realize the low
power dissipation and few external parts.
FEATURES
AM detector coil-less
FM mixer coil-less
Switchover between AM/FM mode is possible with one-
make switch.
Operating supply voltage range
VCC (opr) = 0.95-5V (Ta = 25''C)
Excellent low supply current (VCC= 1.5V, Ta=25°C)
Icc(AM)=1.2mA (Typ.)
ICC (FM) = 4.0mA (Typ.)
BLOCK DIAGRAM
TA7792P/F
TA7792F
DlP16-P-300-2.54A
TA7792F
SSOP16-P-225-1.00A
Weight
DlP16-P-300-2.54A : I.00g (Typ.)
SSOP16-P-225-1.00A : 0.14g (Typ.)
TOSHIBA TA7792P/F
APPLICATION NOTE
< FM SECTION >
It RF amplifier (See Fig.1)
I-- to
Q1 5pF MIX STAGE
This stage is composed of the emitter-grounded and
cascade connection amplifier.
The input impedance of pine is about 2600., which is
determined by D1.
0 Mixer amplifier (See Fig.2)
The amplified RF signal is transformed into f signal by
the mixer circuit which is composed of a differential
amplifier.
fil FM OSC
The amplified IF signal is appeared through the emitter V
follower circuit at Pino. The output impedance of pin -
® is about 3000, due to match the impedance of the ?R2
ceramic filter. 53:1
(Note) I Q4 OUT
The spurious characteristic is determined by the from Him D
RF STAGE Vcc g
characteristic of the ceramic filter (10.7MHz), because
the mixer coil is dispensable. It is possible to
improve the spurious characteristic that the two 5,
ceramic filters of different characteristics are
connected in series.
It IF limiter amplifier (See Fig.3)
The IF limiter amplifier is composed of six emitter-
grounded amplifiers and a differential amplifier. The
basis composition of the emitter-grounded amplifiers is 10m
shown as Fig.3.
0 Detector circuit
This stage is composed of the quadrature detector Fig 3
circuit, which has double balanced.
2 2001-06-25
TOSHIBA TA7792P/F

It RF amplifier (See Fig.4)
RF AGC
This stage is composed of emitter-grounded amplifier,
the input impedance of which has about 7.3k0.
It is necessary to connect as Fig.4, because the Q1
condenser, C1 is available to the audio by-pass of the
RF-AGC, the noise of low frequency. I
o Mixer circuit
The amplified RF signal is transformed into IF signal
by the mixer circuit, which is composed of a
differential amplifier.
Ell C2
0.022pF
0 IF amplifier
This stage is composed of four emitter-grounded amplifiers and the two differential amplifiers.
The input impedance is rather high, because it is changed by the amplitude of input signal (AGC
level). So the input terminal of the IF amplifier must be matched with the impedance of ceramic
filter.

o AM/FM mode switchover
Switchover between AM/FM mode is possible with one-make switch. In case of the opened, this
IC has AM mode.
Another in case that the terminal is connected to VCC directly, that has FM mode.
And the terminal of pine) is VCC terminal of FM FRONT END section, too.
0 Output circuit (See Fig.5)
Both of the AM/FM detector signal is appeared C2 FM MPX
through the pine. TA7792P/F 0 LL_ t + Ci] TA7766AF
Those output are chosen by the mode switchover. At J ii,'
the same time, the output impedance is changed as J
follow at AM/FM mode, due to cut the AM carrier Fig.5
signal and pass the FM composite signal smoothly,
with only one condenser.
Rout(AM) =8k0 (Typ.)
Rout(FM)=1-4k0 (Typ.)
3 2001-06-25
TOSHIBA
TA7792P/F
MAXIMUM RATINGS (Ta = 25°C)
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 5 V
Power Dissipation TA7792P PD (Note) 750 mW
TA7792F 350
Operating Temperature Topr -25--75 "C
Storage Temperature Tstg - 55~150 °C
(Note) Derated above Ta=25°C in the proportion of 6mW/°C for TA7792P, and of
2.8mW/°C for TA7792F.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, Ta = 25°C, VCC= 1.5V
FM : Vin=60dBpV EMF, f=83MHz, fm=1kHz, Af: i22.5kHz
AM : Vin=60dBpV EMF, f=1MHz, fm=1kHz, MOD=30%
CHARACTERISTIC SYMBOL CIR- TEST CONDITION MIN. TYP. MAX. UNIT
ICC (FM) 1 Vin = 0 - 4.0 5.2
Supply Current ICC (AM) 1 Vin =0 - 1.2 1.8 mA
Input Limiting Voltage Vin (lim) 1 -3dB limiting - 1O 16 dB/A/ EMF
Total Harmonic Distortion THD(FM) 1 - 0.25 - %
Signal To Noise Ratio S/N(FM) 1 - 62 - dB
Quiescent Sensitivity 05 1 S/N =30dB - 12 - dBp1/ EMF
FM AM Rejection Ratio AMR 1 MOD=30% - 30 - dB
Oscillator Voltage Vosc 2 f=60MHz 53 90 135 mVrms
Oscillator Stop Supply V FM . - -
Voltage stop( ) 1 vm< 20dBpV EMF 0.85 0.95 v
Recovered Output Voltage VOD(FM) 1 28 45 68 mVrms
Voltage Gain GV 1 Vin =30dBpV EMF 14 25 50 mVrms
Recovered Output Voltage V0D(AM) 1 25 40 60 mVrms
AM Total Harmonic Distortion THD(AM) 1 - 1.5 - %
Signal To Noise Ratio S/N(AM) 1 - 40 - dB
Oscillator Stop Supply vstop(AM) 1 vin< -20dBp1/ EMF - 0.85 0.95 v
Voltage
. . FM R (FM) 1 f=1kHz - 1.4 -
Out tResistancePina 0
u pu I c I (B) AM Ro(AM) 1 f=1kHz - 8 - m
X Vin : Open Display
4 2001-06-25
TOSHIBA
TA7792P/F
TERMINAL VOLTAGE : Terminal voltage at no signal with test circuit (VCC= 1.5V, Ta =25°C)
mm mm: SYMBOL AMTYP-FM UNIT BIN tis SYMBOL AMTYP-FM UNIT
1 FM RF OUT V1 - 1.5 V 9 FM DET V9 1.5 1.5 V
2 VCC1 V2 - 1.5 V 10 VCC2 V10 1.5 1.5 V
3 FM OSC V3 - 1.5 V 11 GND2 V11 0 0 V
4 AM OSC V4 1.5 1.5 V 12 FM f IN V12 - 0.7 V
5 AM MIX OUT V5 1.5 1.5 V 13 AM RF IN V13 0.7 - V
6 AM AGC 1/6 0.8 - V 14 FM MIX OUT V14 - 0.8 V
7 AM IF IN V7 1.4 1.5 V 15 GND1 V15 0 0 V
8 AF OUT V8 0.6 0.6 V 16 FM RF IN V15 - 0.7 V
TEST CIRCUIT 1
AM 5; IN "HP' (MURATA) CV“: 1.5V
cg . (SOSHIN) Cl -a+ SFE10.7MA8 H
m Vin PFKE4 G "st 22pF
BPF I - L
Vin : OPEN DISPLAY "
0.022/1F
"s,. / PFA455A
"s , (MURATA)
5 2001-06-25
TOSHIBA TA7792P/F
TEST CIRCUIT 2
C16D-oiD-0-C1FC12D-O-C1iF02
TA7792P/F
0‘047/1F
2SK192A
VOLTMETER
COIL DATA (Test circuit) © :SUMIDA ELECTRIC Co., Ltd.
TEST L Co TURN WIRE
COIL STAGE FREQUENCY (PH) (pF) Q0 1-2 2-3 1-3 4-6 (mm¢) REFERENCE
L1 FM RF 100MHz 0.053 - 100 - - 1T - 0.5UEW s 0258-000-020
L2 FM OSC 100MHz 0.065 - 100 - - 27 - 0.5UEW s 0258-000-021
T1 AM OSC 796kHz 288 - 115 13 73 - - 0.08UEW S 4147-1356-038
T2 AM IFT 455kHz - 180 120 - - 180 15 0.06UEW s 2150-2162-165
T3 FM DET 10.7MHz - 82 110 - - 13 - 0.12UEW s 4152-4095-015
L1, L2 VC T1 VCC T2 CF T3
G) 0 G)
PIN@ CD y, Ci)
(i) 6 G)
Vcc PIN© PIN©
6 2001-06-25
TOSHIBA
TA7792P/F
CHARACTERISTICS CURVES
FM (F/E+IF) VOD, AMR, Vno, THD - Vin
Vcc-- ISV, , 22.5kHz dev.
Pp..?..:.'..'. f=83MHz, fm =1kHz, Ta =25°C
JK' f' 0
8 VOD (OdB REF.=RECOVERED AUDIO)
l? O AMR
>1: - -40
0': th Vno
2tl > THD
O< n: -80
-20 0 20 40 60 80 100 120 140
INPUT SIGNAL VOLTAGE Vin (dBprV EMF)
AM ICC, Voo - Vcc
Vcc: 1.5V
A f=1MHz
5 fm =1kHz
u, Ta =25°C
g VOD (OdB REF.=RECOVERED AUDIO)
0 1 2 3 4
SUPPLY VOLTAGE Vcc (V)
FM (IF) VOD, V8(DC), THD - Af
a" Vcc: 1.5V
FP. 1/in=90dBpV EMF
122.5kHz dev. A
>8 2k==21skllz a
a - VOD fi"
$ (OdB REF.= RECOVERED AUDIO) ii;
a -2 E
's V8030 S
-120 -80 -40 0 40 80
DETUNING FREQUENCY Af (kHz)
RECOVERED OUTPUT VOLTAGE V00 (dB) TOTAL HARMONIC DISTORTION THD
TOTAL HARMONIC DISTORTION THD (%)
FM (IF) VOD, AMR, Vno, THD - Vin
AN‘ 20 A
:'lii:'ll:f.) Vcc=1.5V tir'.
f=10.7MHz (OdB REF.=RECOVERED AUDIO) Ct
Egg 0 122.5kHz dev. a:
> <> fm=1kHz VOD
3 Ta=25''C g
< -20 -
'd' , a
59-" -40 5
042 Lu?
- - n:
253 60 <
s-gil',', I
DLu> -l
ELMO <
r- U - -
32.“ 80 C)
O- 20 0 20 40 60 80 100 120 140
INPUT SIGNAL VOLTAGE Vin (dBpV EMF)
FM (F/ E + IF)
In Qs, Vin0im), Afosc. ICC - Vcc
E5 vcc=1.5v A
>> 1 f=83MHZ E 5
gg i22.5kHz dev. Pf.. F
T...?...'..'. fm=1kHZ - Ct"
Ta=25°C g -4 g.
E 3 Ul
a',-' 200 tr, - y
m g -3 's
n: 'dl
:2 0 0 - a:
- - - D
it8 < -2 u
71> \\ =' ti
ao 4003. - g
33 o 3
" -' -1 Mt
5% Vin(lim) Qs tf,
tf-' o -
us|- .1
:0. -0
oz sos 1 2 3 4 5
SUPPLY VOLTAGE VCC (V)
AM VOD, Vno. THD - Vin
iiij15. f=1MHz (OdB REF_=RECOVERED AUDIO)
00 fm=1kHz
>59 vcc=1.5v
m Ta=25°C a
I- 80% MOD ;
L116 0
'jiit' 2,
5'5 THD 0:
a. UC.'
Ts I a
$0 30% MOD gg
IDa 1,.
r-F, I
'aio, .5
0 20 40 60 80 100 120 140
INPUT SIGNAL VOLTAGE Vin (dBpV EMF)
TOSHIBA TA7792P/F
PACKAGE DIMENSIONS
DIP16-P-300-2.54A Unit : mm
16 9 3,
r1 F-n m r1 l_| W r-n r-1 d
‘ 19.75MAX _,
19.25i0.2 g
c-eethl
0.735TYP
Weight : 1.00g (Typ.)
8 2001-06-25
TOSHIBA TA7792P/F
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 TA7792P/F
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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