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PDF TA1275BFNG Data sheet ( Hoja de datos )
| Número de pieza | TA1275BFNG | |
| Descripción | SECAM Demodulator Processor | |
| Fabricantes | Toshiba Semiconductor | |
| Logotipo |  |
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TOSHIBA Bipolar Linear Integrated Circuit
Silicon Monolithic
TA1275BFNG
SECAM Demodulator Processor
TA1275BFNG
The TA1275BFNG is a SECAM demodulation IC, used in
combination with the TB1309 series to achieve a multicolor system.
This IC requires very few external parts.
Features
Combines with the TB1309 series, which is a video processor,
timing controller, and PWM pulse processor for analog LCDs
Built-in bell filter
Built-in FM demodulator with PLL circuit for color demodulation
and SECAM identification
DC voltage offset for demodulated signal adjuster
Input terminals for external R-Y / B-Y signals
SSOP24-P-300-0.65A
Weight: 0.09 g (typ.)
Pin Connection
24 23 22 21 20 19 18 17 16 15 14 13
1 2 3 4 5 6 7 8 9 10 11 12
1 2005-03-14
1 page  
Terminal Interface
The equivalent circuit diagrams may be simplified or some parts of them may be omitted for explanatory purposes.
Pin
No.
Pin Name
Function
Interface Circuit
2
1 SCP IN
The pin for inputting the sand
castle pulse (SCP)
1
2 Vcc 5 V (Pulse)
VCC pin for logic block
3 N.C. (No Connection) Connect to GND.
4.43CW-IN
4
GATE WIDTH
The pin for inputting 4.43 MHz of
carrier wave for the
selfadjustment circuit. Input a
500 mVp-p sine wave through a
coupling capacitor.
The switch for changing the gate
pulse width is overlaid on this
pin.
+200 nS :
0ns :
−200 nS :
to VCC thru
33 kΩ
open
to GND thru
33 kΩ
4
18
―
―
15
18
TA1275BFNG
Input/Output Signal
―
―
―
―
5 2005-03-14
5 Page 
Pin
No. Pin Name
Function
16 EXT. B-Y IN
The input pin for the external B-Y
signal. The gain of the internal
amplifier is 0 dB.
16
17 N.C. (No Connection) Connect to GND.
18 GND
The GND pin.
19 f0-ADJ. FILTER
The pin for connecting a
capacitor for the automatic
adjustment circuit.
Too large a capacitor causes a
time delay obtaining a color
signal on the picture. Yet picture
noise and flickeringoccur if the
capacitor is too small.
19
Interface Circuit
15
18
―
―
15
18
11
TA1275BFNG
Input/Output Signal
―
―
―
―
2005-03-14
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet TA1275BFNG.PDF ] | |
Hoja de datos destacado
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| TA1275BFNG | SECAM Demodulator Processor | Toshiba Semiconductor |
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