DAC0808

8-Bit D/A Converter

General Description

The DAC0808 is an 8-bit monolithic digital-to-analog con-

verter (DAC) featuring a full scale output current settling time

of 150 ns while dissipating only 33 mW with ±5V supplies.

No reference current (I

REF) trimming is required for most

applications since the full scale output current is typically ±1

LSB of 255 I

REF/256. Relative accuracies of better than

±0.19% assure 8-bit monotonicity and linearity while zero

level output current of less than 4 µA provides 8-bit zero

accuracy for I

REF≥2 mA. The power supply currents of the

DAC0808 is independent of bit codes, and exhibits essen-

tially constant device characteristics over the entire supply

voltage range.

The DAC0808 will interface directly with popular TTL, DTL or

CMOS logic levels, and is a direct replacement for the

MC1508/MC1408. For higher speed applications, see

DAC0800 data sheet.

Features

n

Relative accuracy: ±0.19% error maximum

n

Full scale current match: ±1 LSB typ

n

Fast settling time: 150 ns typ

n

Noninverting digital inputs are TTL and CMOS

compatible

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High speed multiplying input slew rate: 8 mA/µs

n

Power supply voltage range: ±4.5V to ±18V

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Low power consumption: 33 mW @ ±5V

Block and Connection Diagrams

DS005687-1

Dual-In-Line Package

DS005687-2

Top View

Order Number DAC0808

See NS Package M16A or N16A

May 1999

© 2001 National Semiconductor Corporation

DS005687

www.national.com