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TA8701AN
TOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
TA8701AN
PIF / SIF+ATT IC FOR TV / VTR To input function
FEATURES
PIF section
· RF-Pre Amp. less by high input sensitivity
· 3-Stage IF amplifier with variable gain
· High-Speed response AGC with dual time constants
· Single end AFT output with defeat function
· Delayed RF AGC output (Reverse AGC)
· Output with white / black noise inverter
· Output without white / black noise inverter
· Video mute switch
SIF section
· 3-stage limiter amplifier
· Quadrature-type detection circuit
· Use of a ceramic discriminator device makes the SIF circuit adjustment-free
· Sound mute switch
· N.F. audio amplifier
· DC ATT control
Weight: 1.22g (Typ.)
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BLOCK DIAGRAM
TA8701AN
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TERMINAL FUNCTION
TA8701AN
PIN
No.
1
2
3 AGC Delay
PIN NAME FUNCTION INTERFACE CIRCUIT
AGC Filter
This filter is a dual time constant system to
speed up AGC.
By connecting the primary filter terminal of
pin 2 to GND, the picture muting is
executed.
This terminal adjusts the delay point of RF
AGC by varying the reference voltage of
comparator.
4
PIF Input
5
6 PIF GND
7 RF AGC Output
This is an input terminal of PIF signal using
an emitter follower.
The input impedance is typical 2.5kΩ, 4pF.
GND pin for the PIF amplifier.
Connect a capacitor between pins 23 and 6.
Output pin for RF-AGC supplied to the tuner.
(A 39kΩ resistor is connected internally
between pin 7 and the internal power supply
pin.)
―
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TA8701AN
PIN
No.
PIN NAME FUNCTION INTERFACE CIRCUIT
FM Det Output
8
(De-emphasis)
9
SIF Coil
10
11 Audio Input Sound amplifier Input terminal.
This is an output terminal of FM detector
circuit.
(Supply this signal to the de-emphasis
circuit.)
This terminal connects FM detector Coil.
Use of a ceramic discriminator device makes
the SIF circuit adjustment-free.
By connecting pin 9 to GND, the Audio
muting is executed.
12 NF Sound amplifier negative feedback terminal.
13 Audio Output Sound Signal Output terminal.
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PIN
No.
14 ATT Sound amplifier gain control terminal.
PIN NAME FUNCTION INTERFACE CIRCUIT
TA8701AN
15 SIF GND
16 SIF Input Limiter amplifier input terminal.
17 SIF VCC
Video Signal
18
Output-1
(N.I. OFF)
GND pin for the SIF amplifier.
Connect a capacitor between pins 15 and
17.
pin for the SIF amplifier.
V
CC
Connect a capacitor between pins 15 and
17.
This is an output terminal of video output.
By connecting pin 2 to GND, a muting is
executed.
Output Signal supplied to the sound IF (SIF)
circuit.
(Example for diversity antenna circuit.)
―
―
19
Video Signal
Output-2
(N.I. ON)
This is an output terminal of video output.
By connecting pin 2 to GND, a muting is
executed.
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TA8701AN
PIN
No.
20
21
PIN NAME FUNCTION INTERFACE CIRCUIT
Video Coil This terminal connects video detector Coil.
Supply a control signal by single end. This
method is that the phase difference is
22 AFT Coil
23 PIF VCC
24 AFT Output This is an output terminal of AFT.
treated as current and voltage is converted
by an external resistor. Therefore, this can
be connected to AFT using only one pin.
By connecting a resistor of 5.1kΩ to GND,
an AFT defeat can be executed.
V
Pin for the PIF amplifier.
CC
Connect a capacitor between pins 6 and 23.
―
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TA8701AN
MAXIMUM RATINGS
CHARACTERISTIC SYMBOL RATING UNIT
Supply Voltage VCC 15 V
Power Dissipation PD (Note) 1.4 W
Operating Temperature T
Storage Temperature T
(Ta = 25°C)
−20~65 °C
opr
−55~150 °C
stg
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
PIN No. PIN NAME MIN TYP. MAX UNIT
17 PIF VCC 8.1 9.0 9.9 V
23 SIF VCC 8.1 9.0 9.9 V
ELECTRICAL CHARACTERISTICS
DC CHARACTERISTICS
CHARACTERISTIC SYMBOL
Supply Current ICC 1 ― 29 43 56 mA
Pin 3 V3 SW2 : b 5.7 6.2 6.7
Pin 4 V4 ― 3.5 4.0 4.5
Pin 5 V5 ― 3.5 4.0 4.5
Pin 7
Pin 8 V8 SW3 : b 3.3 3.9 4.5
Pin 9 V9 SW3 : a 2.2 2.7 3.2
Pin 10 V10 ― 3.2 3.7 4.2
Pin 11 V11 ― 3.0 3.5 4.0
Terminal Voltage
Pin 12 V12 ― 5.7 6.2 6.7
Pin 13 V13 SW4 : b 4.4 4.9 5.4
Pin 14 V14 SW4 : a 2.0 2.5 3.0
Pin 16 V16 ― 2.5 3.0 3.5
Pin 18 V18 ― 4.2 4.7 5.2
Pin 19 V19 ― 4.2 4.7 5.2
Pin 20 V20 ― 5.8 6.3 6.8
Pin 21 V21 ― 5.8 6.3 6.8
Pin 22 V22 SW5 : a 2.3 2.8 3.3
Pin 24 V
(Unless otherwise specified, V
TEST
CIR-
CUIT
V
SW1 : a SW2 : c 8.8 ― ―
7 (1)
V
SW1 : b SW2 : a ― ― 0.5
7 (2)
1
24
TEST CONDITION MIN TYP. MAX UNIT
SW5 : b 2.5 4.0 5.5
= 9V, Ta = 25°C)
CC
V
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TA8701AN
AC CHARACTERISTICS
PIF section
Input Sensitivity V
Maximum Input Level V
IF AGC Range ∆A 2 ― 50 62 ― dB
Differential Gain DG ― ― 8 %
Differential Phase DP
No-signal Output Level V
Sync. Tip Level V
Video Output Amplitude V
White Noise Inverter Level V
White Noise Clamp Level V
Black Noise Inverter Level V
Black Noise Clamp Level V
Carrier Wave Rejection Ratio CL 4 (Note 8) 40 ― ― dB
Harmonic Rejection Ratio I
AFT Sensitivity ∆F /∆V 2 (Note 10) ― 20 30
AFT Output Voltage
Intermodulation I
(When using the specified video coil)
CHARACTERISTIC SYMBOL
(Unless otherwise specified, V
= 9V, Ta = 25°C)
CC
TEST
CIR-
CUIT
MIN 2 (Note 1) 36 41 46 dBµV
in
MAX 2 (Note 2) 100 110 ― dBµV
in
3 (Note 3)
2 (Note 4) 4.0 4.6 5.2 V
14, V15
2 (Note 5) 2.0 2.3 2.6 V
SYNC
2 (Note 6) 1.7 2.0 2.3 V
OUT
― 5.0 ―
WTH
― 3.8 ―
WCL
BTH
BCL
4 (Note 9) 40 ― ― dB
2nd
Min. VL ― 0.1 0.5
Max. V
U
4 (Note 11) 30 38 ― dB
920
2 (Note 7)
0.9 1.2 1.5
2 ―
TEST CONDITION MIN TYP. MAX UNIT
― ― 6 °
3.2 3.5 3.8
8.4 8.7 ―
kHz /
SIF section
FM Detector Output Level VOD 5 (Note 12) 350 550 750 mV
Limiting Sensitivity V
AM Suppression Ratio AMR 5 (Note 14) 40 ― ― dB
−3dB Bandwidth ±∆fG 5 (Note 15) 60 80 ― kHz
Distortion Bandwidth (1.5%) ±∆fD 5 (Note 16) 50 70 ― kHz
ATT AC Gain GV (ATT) 2 (Note 17) 8 10 12 dB
ATT Maximum Attenuation ATT MAX 2 (Note 18) 75 ― ― dB
Audio Amp. AC Gain GV (AF) 2 (Note 19) 15 17 19 dB
(When using the specified SIF coil)
CHARACTERISTIC SYMBOL
INLIM
TEST
5 (Note 13) ― 40 50 DBµV
CIR-
CUIT
TEST CONDITION MIN TYP. MAX UNIT
p-p
V
V
V
rms
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TEST CONDITIONS
Note 1: Input sensitivity
PIF input (Pin 4) : f
Gradually reduce the input level. Measure the input level when the detection output at video output (Pin
19-a) will be −3dB.
Note 2: Maximum input level
PIF input (Pin 4) : Input same as Note 1.
Gradually raise the input level. Measure the input level when the detection output at video output (Pin 19-a)
is at the noise inverter threshold.
Note 3: Differential gain / Differential phase
PIF input (Pin 4) : f
87.5% AM, 84dBµV.
IF AGC = Free.
Measure the differential gain and differential phase with a vector scope. (Pin 19-b)
Note 4: No-signal output level
PIF input (Pin 4) : No input. 2nd AGC terminal (Pin 1) : GND, Measure DC voltage at video output
(Pin 19-a).
Note 5: Sync. Tip level
PIF input (Pin 4) : Input same as Note 3. Measure Sync. Tip DC voltage at video output (Pin 19-b).
= 58.75MHz, fm = 15.75kHz, 30% AM, 84dBµV.
o
= 58.75MHz, Standard television signal (V / S = 10 : 4 ramp waveform),
o
TA8701AN
Note 6: Video output amplitude
PIF input (Pin 4) : Input same as Note 3. Measure amplitude level at video output (Pin 19-b).
Note 7: Noise inverter
PIF input (Pin 4) : f
Connect monitor scope to video output (Pin 19-b).
Measure the 2nd AGC terminal (Pin 1) voltage and fix the terminal to that voltage using the external power
supply.
Then, 2nd AGC Voltage variable when a waveform like that in the accompanying diagram is output.
= 57~65MHz (Sweep Signal), 84dBµV.
o
AD: Black noise inverter level.
BC: Black noise clamp level.
EH: White noise inverter level.
FG: White noise clamp level.
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Note 8: Carrier wave rejection ratio
PIF input (Pin 4) : f
= 58.75MHz, fm = 15.75kHz, 78% AM, 84dBµV.
o
Add the voltage 2nd AGC terminal (Pin 1), So that the video output (Pin 19-b) can be 2V
Calculate the following equation by setting the modulation off and measuring the output carrier level.
(V
[dB]
no-mod
[V
])
p-p
og20C
l=
L
2.0
p-pmod-no
Note 9: Harmonic rejection ratio
Measure as is Note 8 above, and calculate the secondary harmonic level (117.5MHz component) at video
output (Pin 19-b).
Note 10: AFT sensitivity
PIF input (Pin 4) : f
= 58.75MHz, 84dBµV, CW.
o
Input the above signal and adjust the AFT coil so that the AFT output pin (Pin 24) voltage is 4.5V.
Measure the output voltage differential (∆V) of the AFT output pin when the frequency is raised by 20kHz.
Then, calculate the ratio using the following formula.
20
/ V][kHz
∆f
=
∆V
∆V
TA8701AN
p-p.
)(V V
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Note 11: Intermodulation
PIF input (Pin 4) : Input the following composite signals to the PIF input.
(1) SG1 : 58.75MHz (P) 84dBµV
(2) SG2 : 54.25MHz (S) 74dBµV
(3) SG3 : 55.17MHz (C) 74dBµV
Monitor the video output (Pin 19-b) detection output waveform. Apply external voltage to the 2nd AGC
terminal (Pin 1) so that the waveform’s lowest level matches the sync. Tip level.
Using a spectrum analyzer, measure the difference between the level of the chroma signal component and
920kHz signal component.
Note 12: FM detection output
SIF input (Pin 16) : f
= 4.5MHz, fm = 400Hz, 25kHz / devi, 100dBµV.
o
Measure the sound detection output of the sound output terminal (Pin 8).
Note 13: Limiting sensitivity
SIF input (Pin 16) : Input same as Note 12. Gradually reduce the input signal. Measure the input level when
the sound detection output of the sound output terminal (Pin 8) will be −3dB.
Note 14: AM Suppression ratio
SIF input (Pin 16) : f
= 4.5MHz, 84dBµV.
o
Measure the sound detection output level of the sound output terminal (Pin 8) when the above signals are
modulated as follows. Calculate the ratio.
(1) AM modulation : f
(2) FM modulation : f
[dB]
=l
= 400Hz, 30%
m
= 400Hz, 25kHz / devi
m
é
og20AMR
ê
ë
rms
rms
ù
)(mV modulation FM with
ú
)(mV modulation AMwith
û
TA8701AN
Note 15: −3dB bandwidth
SIF input (Pin 16) : f
(1) f
Afh
output of the sound output terminal will be −3dB.
(2) f
AFI
output of the sound output terminal will be −3dB.
−3dB bandwidth = (f
= 4.5MHz, fm = 400Hz, 7.5kHz / devi, 100dBµV.
o
: Gradually raise the frequency. Measure the input frequency when the sound detection
: Gradually lower the frequency. Measure the input frequency when the sound detection
AFh−fAFl
) [kHz]
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Note 16: Distortion bandwidth (1.5%)
SIF input (Pin 16) : Input same as Note 15.
(1) f
: Gradually raise the frequency. Measure the Input frequency when the sound distortion
DAFh
ratio of the sound output terminal will be 1.5%.
(2) f
: Gradually lower the frequency. Measure the input frequency when the sound distortion
DAFl
ratio of the sound output terminal will be 1.5%.
Distortion bandwidth = (f
DAFh−fDAFl
) [kHz]
Note 17: ATT AC gain
Audio input (Pin 11) : f = 1kHz, 0.1V
p-p
.
Measure the negative feedback terminal (Pin 12) output level.
Calculate the ratio using the following formula.
V12) (Pin
[dB]
V
og20(ATT) G
l=
p-p
V(0.1)
p-p
Note 18: ATT maximum attenuation
Audio input (Pin 11) : f = 1kHz, 0.5V
p-p.
ATT terminal volume is Max and Min. (Audio Control : Pin 14)
Measure the negative feedback terminal (Pin 12) output level.
Calculate the ratio using the following formula.
VMax) (Volume
[dB]
og20MAX ATT
l=
p-p
VMin) (Volume
p-p
TA8701AN
Note 19: Audio amp. AC gain
Audio input (Pin 11) : f = 1kHz, 0.1V
ATT terminal volume is Max. (Audio Control : Pin 14)
Measure the Audio output terminal (Pin 13) output level.
Calculate the ratio using the following formula.
V
p-p.
V13) (Pin
og20(AF) G
l=
p-p
[dB]
V(0.1)
p-p
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TEST CIRCUIT 1
DC characteristic
TA8701AN
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TEST CIRCUIT 2
AC characteristic
TA8701AN
COIL JAPAN USA
VIDEO 292YCS-3390BS T119KC-14969NK
AFT 292GCS-3388BS T119KC-14969NK
SIF F292MCAS-3297IB F292MCAS-3297IB
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TEST CIRCUIT 3
DG / DP
TEST CIRCUIT 4
Carrier wave rejection ratio, harmonic rejection ratio and intermodulation
TA8701AN
TEST CIRCUIT 5
VIN
AMR, VOD, ∆fG, ∆f
,
(LIM)
D
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TA8701AN
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APPLICATION CIRCUIT
TA8701AN
COIL JAPAN USA
VIDEO 292YCS-3390BS T119KC-14969NK
AFT 292GCS-3388BS T119KC-14969NK
SIF F292MCAS-3297IB F292MCAS-3297IB
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TA8701AN
PACKAGE DIMENSIONS
SDIP24-P-300-1.78 Unit: mm
Weight: 1.22g (Typ.)
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TA8701AN
A
RESTRICTIONS ON PRODUCT USE
· TOSHIBA 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..
· The 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.
· The products described in this document are subject to the foreign exchange and foreign trade laws.
· The 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.
000707EB
· The information contained herein is subject to change without notice.
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