1996 Aug 23

2

Philips Semiconductors

Product specification

8-bit video digital-to-analog converter

TDA8702

FEATURES

• 8-bit resolution

• Conversion rate up to 30 MHz

• TTL input levels

• Internal reference voltage generator

• Two complementary analog voltage outputs

• No deglitching circuit required

• Internal input register

• Low power dissipation

• Internal 75 Ω output load (connected to the analog

supply)

• Very few external components required.

APPLICATIONS

• High-speed digital-to-analog conversion

• Digital TV including:

– field progressive scan

– line progressive scan

• Subscriber TV decoders

• Satellite TV decoders

• Digital VCRs.

GENERAL DESCRIPTION

The TDA8702 is an 8-bit Digital-to-Analog Converter

(DAC) for video and other applications. It converts the

digital input signal into an analog voltage output at a

maximum conversion rate of 30 MHz. No external

reference voltage is required and all digital inputs are TTL

compatible.

QUICK REFERENCE DATA

Note

3. The

−3 dB analog output bandwidth is determined by real time analysis of the output transient at a maximum input

code transition (code 0 to 255).

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

analog supply voltage

4.5

5.0

5.5

V

digital supply voltage

4.5

5.0

5.5

V

analog supply current

note 1

−

26

32

mA

digital supply current

note 1

−

23

30

mA

full-scale analog output voltage

(peak-to-peak value)

note 2

−1.60

−1.75

V

−0.80

−0.88

V

ILE

DC integral linearity error

−−±1/2

LSB

DLE

DC differential linearity error

−−±1/2

LSB

maximum conversion rate

−−

30

MHz

B

−3 dB analog bandwidth

−

150

−

MHz

total power dissipation

−

250

340

mW