TDA9840 datasheet(2/28 Pages) PHILIPS

2 / 28 page

1998 Jul 03

Philips Semiconductors

Product speciﬁcation

TV and VTR stereo/dual sound processor

with digital identiﬁcation and I2C-bus control

TDA9840

FEATURES

• Supply voltage 5 to 8 V

• De-emphasis

• Source selector

• Level and stereo matrix adjustment possible via the

I2C-bus

• I2C-bus transceiver

• AF inputs for NICAM or AM sound (standard L)

• AF outputs for Main and SCART

• AF input and output signals selectable via the I2C-bus

• Information for identified transmission mode is readable

via I2C-bus

• Software is compatible with the TDA8415/16/17

• Quartz oscillator and clock generator

• Three digital PLL, alignment-free

• Two digital integrators, alignment-free

• Stabilizer circuit for ripple rejection and constant output

signals

• ESD protection of all pins.

GENERAL DESCRIPTION

The TDA9840 is a stereo/dual sound processor for TV and

VTR sets. Its identification ensures safe operation by using

internal digital PLL technique with extremely small

bandwidth, synchronous detection and digital integration

(switching time maximum 2.3 s; identification concerning

the main functions).

ORDERING INFORMATION

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA9840

DIP20

plastic dual in-line package; 20 leads (300 mil)

SOT146-1

TDA9840T

SO20

plastic small outline package; 20 leads; body width 7.5 mm

SOT163-1

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