APPLICATIONS

? 4 1/2 digits to 5 1/2 digits plus sign measurements

? Precision analog signal processor

? Precision sensor interface

? High accuracy DC measurement functions

? Portable battery operated instruments

? Computer peripheral

? PCMCIA

FEATURES

? Resolution up to 18 bits plus sign bit and over-range bit

? Accuracy independent of input source impedances

? Accurate on-chip voltage reference

? Tempco as low as 10 ppm/°C guaranteed

? Chip select - power down mode

? High input impedance of 1012 W

? Inherently filters and integrates any external noise spikes

? Differential analog input

? Wide bipolar analog input voltage range ±3.5V

? Automatic zero offset compensation

? Low linearity error - as low as 0.001 typical

? Fast zero-crossing comparator - 1ms

? Low power dissipation - 6mW typical

? Automatic internal polarity detection

? Low input current - 2pA typical

? Optional digital control from a microcontroller, an ASIC, or

a dedicated digital circuit

? Flexible conversion speed vs. resolution trade-off

BENEFITS

? Low cost, simple functionality

? Wide dynamic signal range

? Very high noise immunity

? Automatic compensation and cancellation

of error sources

? Easy to use to acquire bipolar signals

? Up to 19 bit (18 bit + sign bit) single conversion

or 21 bit (20 bit + sign bit) multiple conversion

and noise performance

? Inherently linear and stable with temperature

and component variations