ISL28533

5V, Rail-to-Rail I/O, Zero-Drift, Single Ended Output Programmable Gain Instrumentation Amplifier

OVERVIEW

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.

KEY FEATURES

  • Ultra high precision front-end amplifier
  • Zero-drift instrumentation amplifier
  • Pin selectable 9 gain settings: G = 1 to 1,000
  • Rail-to-rail input/output
  • Single-ended output (ISL28533, ISL28534, ISL28535)
  • Differential output (ISL28633, ISL28634, ISL28635)
  • RFI filtered inputs improve EMI rejection
  • Single supply: 2.5V to 5.5V
  • Dual supply: ±1.25V to ±2.75V
  • Low input offset: 5μV, Maximum
  • Low input offset drift: 50nV/°C, Maximum
  • High CMRR: 138dB, G = 100
  • Low gain error: <0.4%, All Gains, Maximum
  • Gain bandwidth: 2.3MHz
  • Input voltage noise (0.1Hz to 10Hz): 0.4μVP-P
  • Operating temperature range: -40°C to +125°C

PARAMETRICS

Parameters
ISL28533
Basic Information
Production Status
Mass Production
# of Devices/ Channels
1
Bandwidth (MHz)
2.3
Slew Rate (V/μs)
0.8
VS (min)
2.5 V
VS (max)
5.5 V
IS (per amp)
2.9 mA
Noise VN (nV/√Hz)
17
IBIAS
50 pA
IBIAS (max)
400 pA
Max Offset Voltage
5 µV
IOUT
4 mA
Rail-to-Rail Input
Yes
Rail-to-Rail Output
Yes
PSRR (dB)
140
CMRR (dB)
138
Thermal Shutdown
No
Gain Min
1
AVOL (dB)
140
Enable
No
Gain Error/Measurment Error Max
0.05
Topology
VFA
Qualification Level
Standard
Can Sample
YES
Temperature Range
-40 to +125

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