1996 Jan 12

2

Philips Semiconductors

Product specification

YUV 8-bit analog-to-digital interface

TDA8753A

FEATURES

• Triple analog-to-digital converter

• 8-bit resolution

• Sampling rate up to 20 MHz

• Power dissipation of 500 mW (typical)

• Internal clamp functions

• 4:1:1 output data encoder

• Y binary output

• U, V two's complement outputs

• Sample rate converter permits programmable horizontal

compression factors from 1 to 2

• Serial microcontroller interface

• TTL compatible inputs.

APPLICATIONS

• High-speed analog-to-digital conversion for video signal

digitizing in 4 :1:1 format

• 100 Hz improved definition TV for all formats

(4/3, 16/9, 14/9 etc.).

GENERAL DESCRIPTION

The TDA8753A is a monolithic CMOS 8-bit video

low-power analog-to-digital conversion interface for YUV

signals. It converts the YUV analog input signal into 8-bit

binary coded digital words in format 4 :1:1 at a sampling

rate of 20 MHz. All analog signal inputs are clamped.

The device includes a digital sample rate converter for

variable compression with a factor 1 to 2.

QUICK REFERENCE DATA

Notes

1. The signal-to-noise ratio without harmonics is measured using a 16 MHz clock frequency. This value is given for a

4.43 MHz input frequency on the Y channel (1.5 MHz on the U and V channels).

should be 5.6 k

Ω (5%).

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

analog supply voltage

4.75

5.0

5.25

V

digital supply voltage

4.75

5.0

5.25

V

analog supply current

−

55

63

mA

digital supply current

−

45

55

mA

INL

integral non-linearity

−±0.75

−

LSB

DLE

differential non-linearity

−±0.5

0.75

LSB

−±0.6

±0.9

LSB

SNR

signal-to-noise ratio

without harmonics

note 1

43

−−

dB

maximum conversion

rate

20

−−

MHz

total power dissipation

note 2

−

500

650

mW

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA8753A

SDIP42

plastic shrink dual in-line package; 42 leads (600 mil)

SOT270-1