REV. 1.02 11/24/99

Features

• 8-bit resolution

• 80, 50, and 30 megapixels per second

• ±0.5 LSB linearity error

• Sync, blank, and white controls

• Independent sync current output

• 1.0V p-p video into 37.5

Ω or 75Ω load

• Enhancemenet of ADV7120

– Internal bandgap voltage reference

– Double-buffered data for low distortion

– Power-down sleep mode

• Double-buffered data for low distortion

• TTL-compatible inputs

• Low glitch energy

• Single +5 Volt power supply

Applications

• Video signal conversion

– RGB

– Composite, Y, C

• Multimedia systems

• Image processing

• True-color graphics systems

• Broadcast television equipment

• High-Definition Television (HDTV) equipment

• Direct digital synthesis

Description

The TMC3503 is a high-speed triple 8-bit D/A converter

especially suited for video and graphics applications.

It offers 8-bit resolution, TTL-compatible inputs, low power

consumption, a power-down sleep mode, and requires only a

single +5 Volt power supply. It has single-ended current

outputs, SYNC and BLANK control inputs, and a separate

current source for adding sync pulses to any D/A converter

output. WHITE and SLEEP control inputs are available on

PLCC parts. It is ideal for generating analog RGB from

digital RGB and driving computer display and video moni-

tors. Three speed grades are available: 30, 50, and 80 Msps.

The TMC3503 triple D/A converter is available in a 44-lead

plastic J-leaded PLCC. It is also available in a 48-lead plastic

LQFP package. It is fabricated on a sub-micron CMOS

process with performance guaranteed from 0°C to 70°C.

Block Diagram

8 bit D/A

Converter

SYNC

8

SYNC

CLOCK

SLEEP [PLCC only]

COMP

65-3503-01

+1.235V

Ref

BLANK

8 bit D/A

Converter

8

8 bit D/A

Converter

8

WHITE [PLCC only]

[LQFP only]

TMC3503

Triple Video D/A Converter

8 bit, 80 Msps, 5V

www.cadeka.com