SP8542 데이터 시트보기 (PDF) - Signal Processing Technologies

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SP8542

Two and Four Channel 12-Bit Multiplexed Sampling ADCs

Signal Processing Technologies 

®

SP8542/SP8544

Two and Four Channel 12-Bit Multiplexed

Sampling ADCs

s Two or Four Channel Input Mux

s 12 Bit Resolution

s Single +5Volt Supply

s Internal 1.25 Volt Reference

s Unipolar 0 to +2.5 Volt Input Range

s Fast, 3.75 µs Conversion Time per Channel

s Fast Power Shutdown/Turn-On Mode

s 3-Wire Synchronous Serial High Speed

Interface

s 2µA Shutdown Mode (10µW)

s Low Power CMOS 42mW typical

DESCRIPTION

The SP8542 (2 channel) and SP8544 (4 channel) are 12-Bit serial in/out data acquisition systems

with a bi-directional serial interface. The devices contain a high speed 12-Bit analog to digital

converter, internal reference, and a 2 or 4 channel input mux which drives the internal sample/

hold circuitry. The SP8542 is available in 16-pin PDIP and SOIC packages, and the SP8544

is available in 18-pin PDIP and SOIC packages, specified over Commercial and Industrial

temperature ranges.

CS

SCLK

DIN

CH0

CH1

*CH2

*CH3

OFFSET

ADJUST

SHUTDOWN

CONTROL

LOGIC

MUX

Register

MUX

COUNTER

SAR

RTRIM

CDAC

REF.

BUFFER

STATUS

LATCHED

COMPARATOR

DOUT

GAIN

ADJUST

REF OUT

SP8542 - 2 CHANNEL MUX

*SP8544 - 4 CHANNEL MUX

SP8542/8544DS/01

SP8542/8544 Two and Four Channel 12-Bit Multiplexed Sampling ADC's

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© Copyright 2000 Sipex Corporation

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