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TDC1016

Video Speed D/A Converter

Fairchild Semiconductor 

TDC1016

Video Speed D/A Converter

10-Bit, 20 Msps

www.fairchildsemi.com

Features

• 20 Msps conversion rate

• 8, 9, or 10-bit linearity

• Voltage output, no amplifier required

• Single supply operation (-5.2V, ECL compatible)

• Dual supply operation (±5.0V, TTL compatible)

• Internal 10-bit latched data register

• Low glitch energy

• Disabling controls, forcing full-scale, zero, and inverting

input data

• Binary or two’s complement input data formats

• Differential gain = 1.5%, differential phase = 1.0°

Applications

• Construction of video signals from digital data 3x or 4x

NTSC or PAL color subcarrier frequency

• CRT graphics displays, RGB, Raster, Vector

• Waveform synthesis

Description

The TDC1016 is a bipolar monolithic digital-to-analog

converter which can convert digital data into an analog volt-

age at rates up to 20 Msps (Megasamples Per Second). The

device includes an input data register and operates without

an external deglitcher or amplifier.

Operating the TDC1016 from a single -5.2V power supply

will bias the digital inputs for ECL levels, while operating

from a dual ±5V power supply will bias the digital inputs for

TTL levels.

All versions of the TDC1016 are 10-bit digital-to-analog

converters, but are available with linearity specifications of

either 8, 9, or 10 bits. The TDC1016 is patented under U.S.

patent number 3283120 with other patents pending.

Block Diagram

10 TTL INPUTS

(20 ECL INPUTS)

CLK

(CLK)

NDIS

(NDIS)

NFL

NFH

N2C

VREF

COMP

TTL/ECL

DIGITAL

INPUT

BUFFERS 10

DATA

CURRENT

R–2R

LATCHED

SWITCHES

RESISTOR

NETWORK

10

10

CLK

VREF

A

65-1016-01

AOUT

Rev. 1.0.0

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