|
|
PDF TA8701AN Data sheet ( Hoja de datos )
| Número de pieza | TA8701AN | |
| Descripción | PIF/SIF + ATT IC FOR TV/VTR | |
| Fabricantes | Toshiba | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TA8701AN (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
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
Weight: 1.22g (Typ.)
· Use of a ceramic discriminator device makes the SIF circuit adjustment-free
· Sound mute switch
· N.F. audio amplifier
· DC ATT control
1 2001-05-10
1 page  
PIN
No.
PIN NAME
FUNCTION
14 ATT
Sound amplifier gain control terminal.
TA8701AN
INTERFACE CIRCUIT
15 SIF GND
GND pin for the SIF amplifier.
Connect a capacitor between pins 15 and
17.
16 SIF Input
Limiter amplifier input terminal.
17 SIF VCC
VCC pin for the SIF amplifier.
Connect a capacitor between pins 15 and
17.
Video Signal
18 Output-1
(N.I. OFF)
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.)
Video Signal
19 Output-2
(N.I. ON)
This is an output terminal of video output.
By connecting pin 2 to GND, a muting is
executed.
―
―
5 2001-05-10
5 Page 
TA8701AN
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) : fo = 4.5MHz, fm = 400Hz, 25kHz / devi, 100dBµV.
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) : fo = 4.5MHz, 84dBµV.
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 : fm = 400Hz, 30%
(2) FM modulation : fm = 400Hz, 25kHz / devi
AMR
=
20log
é
ê
ë
with
with
FM
AM
modulation
modulation
(mVrms )
(mVrms )
ù
ú
û
[dB]
Note 15: −3dB bandwidth
SIF input (Pin 16) : fo = 4.5MHz, fm = 400Hz, 7.5kHz / devi, 100dBµV.
(1) fAfh: Gradually raise the frequency. Measure the input frequency when the sound detection
output of the sound output terminal will be −3dB.
(2) fAFI: Gradually lower the frequency. Measure the input frequency when the sound detection
output of the sound output terminal will be −3dB.
−3dB bandwidth = (fAFh−fAFl) [kHz]
11 2001-05-10
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TA8701AN.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TA8701AN | PIF/SIF + ATT IC FOR TV/VTR | Toshiba |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |