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OPA320 and OPA2320 CMOS Operational Amplifiers

Texas Instruments offers the OPA320 and OPA2320 precision, 20 MHz, 0.9 pA, low-noise, RRIO, CMOS operational amplifier with shutdown

Image of Texas Instruments' OPA320 and OPA2320 CMOS Operational AmplifiersTexas Instruments' OPA320 (single) and OPA2320 (dual) are precision, low-voltage CMOS operational amplifiers optimized for very low noise and wide bandwidth while operating on a low quiescent current of only 1.45 mA.

The OPA320 series is ideal for low-power, single-supply applications. Low-noise (7 nV/√Hz) and high- speed operation also make them well-suited for driving sampling analog-to-digital converters (ADCs). Other applications include signal conditioning and sensor amplification.

The OPA320 features a linear input stage with zero-crossover distortion that delivers excellent common-mode rejection ratio (CMRR) of typically 114 dB over the full input range. The input common mode range extends 100 mV beyond the negative and positive supply rails. The output voltage typically swings within 10 mV of the rails.

In addition, the OPAx320 has a wide supply voltage range from 1.8 V to 5.5 V with excellent PSRR (106 dB) over the entire supply range, making them suitable for precision, low-power applications that run directly from batteries without regulation.

The OPA320 (single version) is available in a 5-pin SOT23 package; the OPA320S shutdown single version is available in a 6-pin SOT23 package. The dual OPA2320 is offered in 8-pin SOIC, VSSOP, and SON packages, and the OPA2320S (dual with shutdown) in a 10-pin VSSOP package.

Features
  • Precision with zero-crossover distortion:
    • Low offset voltage: 150 µV (max)
    • High CMRR: 114 dB
    • Rail-to-rail I/O
  • Low input bias current: 0.9 pA (max)
  • Low noise: 7 nV/√Hz at 10 kHz
  • Wide bandwidth: 20 MHz
  • Slew rate: 10 V/µs
  • Quiescent current: 1.45 mA/Ch
  • Single-supply voltage range: 1.8 V to 5.5 V
  • OPA320S and OPA2320S:
    • IQ in shutdown mode: 0.1 µA
  • Unity-gain stable
  • Small packages:
    • SOT-23, VSSOP, SON, and SOIC
Applications
  • High-Z sensor signal conditioning
  • Transimpedance amplifiers
  • Test and measurement equipment
  • Programmable logic controllers (PLCs)
  • Motor control loops
  • Communications
  • Input/output ADC/DAC buffers
  • Active filters

OPA320 and OPA2320 CMOS Operational Amplifiers

ImageManufacturer Part NumberDescriptionAvailable QuantityView Details
IC OPAMP GP 1 CIRCUIT SOT23-5OPA320AIDBVRIC OPAMP GP 1 CIRCUIT SOT23-57370 - ImmediateView Details
IC OPAMP GP 1 CIRCUIT SOT23-5OPA320AIDBVTIC OPAMP GP 1 CIRCUIT SOT23-53640 - Immediate
10001 - Factory Stock
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IC CMOS 1 CIRCUIT SOT23-6OPA320SAIDBVTIC CMOS 1 CIRCUIT SOT23-61055 - Immediate
10001 - Factory Stock
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IC OPAMP GP 1 CIRCUIT SOT23-5OPA320AQDBVRQ1IC OPAMP GP 1 CIRCUIT SOT23-58233 - ImmediateView Details
IC CMOS 1 CIRCUIT SOT23-6OPA320SAIDBVRIC CMOS 1 CIRCUIT SOT23-62928 - Immediate
10001 - Factory Stock
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IC OPAMP GP 2 CIRCUIT 8VSSOPOPA2320AIDGKRIC OPAMP GP 2 CIRCUIT 8VSSOP10257 - ImmediateView Details
IC OPAMP GP 2 CIRCUIT 8SONOPA2320AIDRGTIC OPAMP GP 2 CIRCUIT 8SON8886 - Immediate
10001 - Factory Stock
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IC OPAMP GP 2 CIRCUIT 8VSSOPOPA2320AIDGKTIC OPAMP GP 2 CIRCUIT 8VSSOP11143 - Immediate
10001 - Factory Stock
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IC OPAMP GP 2 CIRCUIT 8SOICOPA2320AIDRIC OPAMP GP 2 CIRCUIT 8SOIC4316 - Immediate
10001 - Factory Stock
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IC CMOS 2 CIRCUIT 8VSSOPOPA2320AQDGKRQ1IC CMOS 2 CIRCUIT 8VSSOP8574 - ImmediateView Details
IC CMOS 2 CIRCUIT 10VSSOPOPA2320SAIDGSRIC CMOS 2 CIRCUIT 10VSSOP1089 - Immediate
10001 - Factory Stock
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Published: 2017-07-14