SP8527DS/01

SP8527 Micropower Sampling 10-Bit A/D Converter

© Copyright 2000 Sipex Corporation

1

SP8527

Micropower Sampling 10-Bit A/D Converter

s Low Cost

s 10-Bit Serial Sampling ADC

s Guaranteed +1.0 LSB Max INL

s 8-Pin NSOIC Plastic Package

s Low Power @ 230

µA including

Automatic Shutdown: 1nA (typ)

s Full differential input stage

s Single Supply 3.0V to 5.5V operation

s Digital Serial Interface

s Sample Rate: 26.1

µS

DESCRIPTION

The SP8527 is a very low power 10-Bit A/D converter. The SP8527 typically draws 230

µA of

supply current when sampling at 38.3 kHz. Supply current drops linearly as the sample rate is

reduced. The ADC automatically powers down when not performing conversions, drawing only

leakage current. The SP8527 is available in 8-Pin NSOIC packages, specified over Commercial

and Industrial temperature ranges. The SP8527 is best suited for Battery-Operated Systems,

Portable Data Acquisition Instrumentation, Battery Monitoring, and Remote Sensing

applications. The serial port allows efficient data transfer to a wide range of microprocessors and

microcontrollers over 3 wires.

Internal

VCC

VCC

GND

REFL

DAC

REFL

Csample P

Csample N

+IN

-IN

SAR

PARALLEL TO

SERIAL SHIFT

REGISTER

10

CS/SHDN

SCLK

TIMING &

CONTROL LOGIC

Dout

VREF

COMPARATOR

INPUT

SWITCHES

SP8527 Block Diagram

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