TDA8708 datasheet(2/24 Pages) PHILIPS

2 / 24 page

1996 Nov 26

Philips Semiconductors

Product speciﬁcation

Video analog input interface

TDA8708B

FEATURES

• 8-bit resolution

• Sampling rate up to 32 MHz

• Binary or two’s complement 3-state TTL outputs

• TTL-compatible digital inputs and outputs

• Internal reference voltage regulator

• Power dissipation of 365 mW (typical)

• Input selector circuit (one out of three video inputs)

• Clamp and Automatic Gain Control (AGC) functions for

CVBS and Y signals

• No sample-and-hold circuit required

• The TDA8708B has no white peak control in mode 2

whereas the TDA8708A has control in modes 1 and 2

• In-range output (not TTL levels).

APPLICATIONS

• Video signal decoding

• Scrambled TV (encoding and decoding)

• Digital picture processing

• Frame grabbing.

GENERAL DESCRIPTION

The TDA8708B is an analog input interface for video signal

processing. It includes a video amplifier with clamp and

gain control, an 8-bit Analog-to-Digital Converter (ADC)

with a sampling rate of 32 MHz and an input selector.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

VCCA

analog supply voltage

4.5

5.0

5.5

VCCD

digital supply voltage

4.5

5.0

5.5

VCCO

TTL output supply voltage

4.2

5.0

5.5

ICCA

analog supply current

−

ICCD

digital supply current

−

ICCO

TTL output supply current

−

ILE

DC integral linearity error

−−±1

LSB

DLE

DC differential linearity error

−−±0.5

LSB

fclk(max)

maximum clock frequency

−

MHz

maximum

−3 dB bandwidth (AGC ampliﬁer)

−

MHz

Ptot

total power dissipation

−

365

500

TYPE NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8708BT

SO28

plastic small outline package; 28 leads; body width 7.5 mm

SOT136-1

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