TDA9855 datasheet(32/52 Pages) PHILIPS

Part #	TDA9855

Description	I2C-bus controlled BTSC stereo/SAP decoder and audio processor

PDF	52 Pages

Scroll/Zoom	100%

Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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32 / 52 page

1997 Nov 04

Philips Semiconductors

Product speciﬁcation

I2C-bus controlled BTSC stereo/SAP

decoder and audio processor

TDA9855

Table 25 Timing current setting in register ALI3

Table 26 AVL attack time setting in register ALI3

IS RANGE

DATA

TC2

TC1

TC0

+30%

+20%

+10%

Nominal

−10%

−20%

−30%

Ratt

(

Ω)

DATA

AT1

AT2

420

730

1200

2100

Table 27 ADJ bit setting in register ALI3

FUNCTION

DATA D7

Stereo decoder operation mode

Auto adjustment of channel separation

Fig.4 Automatic volume level control diagram.

AVL measured at pin EOL/EOR.

Y1 axis output level in AVL operation with typically 200 mV.

Y2 axis VCAV DC voltage at pin CAV corresponds with typical gain steps in range of +6 to −15 dB.

(1) VCAV

(2) Vo max(rms)

(3) Vo min(rms)

handbook, full pagewidth

MHA312

VCAV

(V)

VI(rms) (V)

10−1

300

250

200

160

10−2

100

Vo(rms)

(mV)

(1)

(2)

(3)

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