Daewoo 21T2, 21Q2, 21Q1, 14T2, 21Q4, 14Q2, 20Q1, 14Q1 TDA8395 Secam Decoder, Symbol PIN Description

TDA8395 (Secam Decoder)

(1) Features

Fully integrated filters

Alignment free

For use with baseband delay

(2)Description

The TDA8395 is a self-calibrating,fully integrated SECAM decoder. The IC should preferably be used in conjunction with the PAL/NTSC decoder TDA8362 and with the switch capacitor baseband delay circuit TDA4665. The IC incorporates HF and LF filters, a demodulator and an identification circuit (Iuminance is not processed in this IC).

A highly stable reference frequency is required for calibration and a two-level sandcastle pulse for blanking and burst gating.

(3)Block Diagram

		CLOCHEref	PLLref		GND
				Vp	TEST
		100 nF	220 nF
		7	8	3	6	2
	BANDGAP	TUNING	TUNING	TDA8395
CVBS	16	CLOCHE			DE-
	ACC		PLL
		FILTER		EMPHASIS
						9	–(R-Y)
	INTERFACE	CONTROL	IDENT-		OUTPUT
			IFICATION		STAGE	10
							–(B-Y)
	1	15

fref/IDENTSAND

(4) Pin Description

SYMBOL	PIN	DESCRIPTION
fp1/IDENT	1	reference frequency input/identification input
TEST	2	test output
Vp	3	positive supply voltage
n.c.	4	not connected
n.c.	5	not connected
GND	6	ground
CLOCHEref	7	Cloche reference filter
PLL ref	8	PLL reference
-(R-Y)	9	-(R-Y) output
-(B-Y)	10	-(B-Y) output
n.c.	11	not connected
n.c.	12	not connected
n.c.	13	not connected
n.c.	14	not connected
SAND	15	sandcastle pulse input
CVBS	16	video (chrominance) input

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