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Renesas Electronics ISL28x33A Precision CMOS Operational Amplifiers

Renesas Electronics ISL28x33A Precision CMOS Operational Amplifiers (Op Amps) include the ISL28133A (single), ISL28233A (dual), and ISL28433A (quad) micropower, chopper-stabilized devices. These op amps are designed for precision and efficiency in compact spaces. With a quiescent current of 22µA and rail-to-rail input/output, these Renesas components deliver exceptional performance across a wide supply range of 1.8V to 5.5V. The ultra-low input offset voltage (10µV maximum) and minimal noise make these devices ideal for high-accuracy applications, including medical instrumentation, temperature sensing, and electronic weigh scales.

A low supply current of 22µA and a wide input range enable the ISL28x33A devices to be excellent high-precision op amps for a wide range of applications where low power is paramount. All devices operate across a -40°C to +125°C temperature range and are available in a wide variety of packages.

Features

  • Single-supply 1.8V to 5.5V operation range
  • Rail-to-rail input and output
  • Low ±10μV (maximum) input offset voltage
  • Low ±0.075μV/°C (maximum) offset drift
  • 1.1μVPP noise from 0.01Hz to 10Hz
  • Low 22μA supply current
  • 340kHz gain bandwidth
  • Unity-gain stable
  • -40°C to +125°C temperature range
  • Package options
    • 5-pin SC70
    • 5-pin SOT23
    • 8-pin DFN
    • 8-pin SOIC and MSOP
    • 14-pin SOIC and TSSOP

Applications

  • Low-ohmic current sensing
  • Temperature measurement
  • Precision/strain gauge sensors
  • High-gain amplifiers
  • Smoke detectors
  • Appliances
  • Medical equipment
  • Motor control

Specifications

  • 6.0V maximum supply voltage, 1.8V to 5.5V range
  • 20mA maximum input current
  • Continuous short-circuit output
  • DC parameters
    • ±10μV to ±17μV maximum input offset voltage range
    • 0.075μV/°C maximum input offset voltage temperature coefficient
    • ±600pA maximum input bias current
    • ±400pA maximum input offset current
    • 127dB typical common-mode rejection ratio
    • 124dB typical power supply rejection ratio
    • 143dB typical open-loop gain
    • 70mV maximum output voltage swing from rails
    • 30mA maximum sourcing short-circuit current
    • -14mA typical sinking short-circuit current
    • 35μA maximum supply current per amplifier
  • AC parameters
    • 0.9μVpp to 1.1μVpp typical input noise voltage range
    • 43.5nV/√Hz typical voltage noise density
    • 76fA/√Hz typical current noise density
    • 340kHz typical gain bandwidth product
  • Transient response
    • 0.2V/µs typical positive slew rate
    • 0.2V/µs typical negative slew rate
    • 22.5µs typical settling time to 0.1% VO
  • -40°C to +125°C ambient temperature range
  • +150°C maximum junction temperature
  • ESD ratings
    • ISL28133A
      • ±2kV Human-Body Model (HBM) per ANSI/ESDA/JEDEC JS-001
      • ±2kV Charged-Device Model (CDM) per JEDEC specification JS-002
      • ±100mA latch-up tested per JESD78, TA = +125°C
    • ISL28233A and ISL28433A
      • ±6kV Human-Body Model (HBM) per ANSI/ESDA/JEDEC JS-001
      • ±1.5kV Charged-Device Model (CDM) per JEDEC specification JS-002
      • ±100mA latch-up tested per JESD78, TA = +125°C

Typical Application

Application Circuit Diagram - Renesas Electronics ISL28x33A Precision CMOS Operational Amplifiers

Functional Block Diagram

Block Diagram - Renesas Electronics ISL28x33A Precision CMOS Operational Amplifiers

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Achieve low offset voltages, low noise, and overall high performance at low power.

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Publicerad: 2026-04-13 | Uppdaterad: 2026-04-22