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SP9502

Dual, 12–Bit, Voltage Output D/A Converter

Signal Processing Technologies 

SIGNAL PROCESSING EXCELLENCE

SP9502

Dual, 12–Bit, Voltage Output D/A Converter

s Low Cost

s Two 12-bit DAC’s on a Single Chip

s Low Power — 40 mW (20mW/DAC)

s Double-Buffered Inputs

s ± 5V Supply Operation

s Voltage Outputs, ± 4.5V Range

s Midscale Preset, Zero Volts Out

s Guaranteed +0.5 LSB Max INL

s Guaranteed +0.75 LSB Max DNL

s 2 MHz 4-Quadrant Multiplying Bandwidth

s Separate Reference Inputs

s 28–pin SOIC and Plastic DIP

Packages

s Either 12 or 8 bit µp bus

DESCRIPTION

The SP9502 is a low power, dual version of the popular SP9345, Quad 12-Bit Digital-to-Analog

Converter. It features ±4.5V output swings when using ±5 volt supplies. The converter is double-

buffered for easy microprocessor interface. Each 12-bit DAC is independently addressable and

both DACS may be simultaneously updated using a single transfer command. The output

settling-time is specified at 4µs. The SP9502 is available in 28–pin SOIC and DIP packages,

specified over commercial temperature range.

DATA

INPUTS

8 MSB's

4 LSB's

INPUT

REGISTERS

LATCH

LATCH

DAC

REGISTERS

LATCH

LATCH

Ref In Ref In

1

2

–

DAC

+

–

DAC

+

CONTROL LOGIC

VOUT1

VOUT2

A CS WR1 B1/B2 WR2 XFER CLR

SP9502DS/02

SP9502 Dual, 12-Bit, Voltage Output D/A Converter

1

© Copyright 1999 Sipex Corporation

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