SP9502DS/02

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

© Copyright 1999 Sipex Corporation

1

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 4

µs. The SP9502 is available in 28–pin SOIC and DIP packages,

specified over commercial temperature range.

DAC

DAC

LATCH

LATCH

LATCH

LATCH

8 MSB's

4 LSB's

Ref In

1

Ref In

2

–

+

–

+

VOUT1

VOUT2

A

CS

WR1 B1/B2 WR2 XFER CLR

CONTROL LOGIC

INPUT

REGISTERS

DAC

REGISTERS

DATA

INPUTS

SP9502

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

SIGNAL PROCESSING EXCELLENCE