DAC0830LCM National Semiconductor, DAC0830LCM Datasheet

DAC0830LCM

Manufacturer Part Number

DAC0830LCM

Description

8-Bit P Compatible/ Double-Buffered D to A Converters

Manufacturer

National Semiconductor

Datasheet

1.DAC0830LCM.pdf (24 pages)

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DAC0830/DAC0832

8-Bit µP Compatible, Double-Buffered D to A Converters

General Description

The DAC0830 is an advanced CMOS/Si-Cr 8-bit multiplying

DAC designed to interface directly with the 8080, 8048,

8085, Z80

silicon-chromium R-2R resistor ladder network divides the

reference current and provides the circuit with excellent tem-

perature tracking characteristics (0.05% of Full Scale Range

maximum linearity error over temperature). The circuit uses

CMOS current switches and control logic to achieve low

power consumption and low output leakage current errors.

Special circuitry provides TTL logic input voltage level com-

patibility.

Double buffering allows these DACs to output a voltage cor-

responding to one digital word while holding the next digital

word. This permits the simultaneous updating of any number

of DACs.

The DAC0830 series are the 8-bit members of a family of

microprocessor-compatible DACs (MICRO-DAC

Typical Application

BI-FET

Z80

is a registered trademark of Zilog Corporation.

™

and MICRO-DAC

, and other popular microprocessors. A deposited

™

are trademarks of National Semiconductor Corporation.

DS005608

™

Features

n Double-buffered, single-buffered or flow-through digital

n Easy interchange and pin-compatible with 12-bit

n Direct interface to all popular microprocessors

n Linearity specified with zero and full scale adjust

n Works with

n Can be used in the voltage switching mode

n Logic inputs which meet TTL voltage level specs (1.4V

n Operates “STAND ALONE” (without µP) if desired

n Available in 20-pin small-outline or molded chip carrier

Key Specifications

n Current settling time: 1 µs

n Resolution: 8 bits

n Linearity: 8, 9, or 10 bits (guaranteed over temp.)

n Gain Tempco: 0.0002% FS/˚C

n Low power dissipation: 20 mW

n Single power supply: 5 to 15 V

data inputs

DAC1230 series

only — NOT BEST STRAIGHT LINE FIT.

logic threshold)

package

10V reference-full 4-quadrant multiplication

DS005608-1

www.national.com

May 1999

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