Programmable Gain Instrumentation Amplifiers
DATASHEET
ISL28533, ISL28534, ISL28535, ISL28633, ISL28634, ISL28635
5V, Rail-to-Rail I/O, Zero-Drift, Programmable Gai...
Description
DATASHEET
ISL28533, ISL28534, ISL28535, ISL28633, ISL28634, ISL28635
5V, Rail-to-Rail I/O, Zero-Drift, Programmable Gain Instrumentation Amplifiers
FN8364 Rev.2.02 Jun 4, 2020
The ISL28533, ISL28534, ISL28535, ISL28633, ISL28634, and ISL28635 are 5V zero-drift rail-to-rail input/output Programmable Gain Instrumentation Amplifiers (PGIA). These instrumentation amplifiers feature low offset, low noise, low gain error and high CMRR. They are ideal for high precision applications over the wide industrial temperature range.
These instrumentation amplifiers are designed with a unique 2-bit, 3-state logic interface that allows up to 9 selectable gain settings. The ISL2853x single-ended output includes an additional uncommitted zero-drift amplifier, useful to buffer the REF input or used as a precision amplifier. The ISL2863x differential output amplifier includes a reference pin to set the common-mode output voltage to interface with differential input ADCs.
Applications
Pressure and strain gauge transducers
Weight scales
Flow sensors
Biometric: ECG/blood glucose
Temperature sensors
Test and measurement
Data acquisition systems
Low ohmic current sense
TABLE 1. KEY DIFFERENCES BETWEEN FAMILY OF PARTS
PART NUMBER
OUTPUT
ADDITIONAL UNCOMMITTED OP AMP
ISL28533/34/35 Single-ended
Yes
ISL28633/34/35
Differential
No
Features
Ultra high precision front-end amplifier Zero-drift instrumentation amplifier Pin selectable 9 gain settings: G = 1 to 1,000 Rail-...
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