Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Vos (offset voltage @ 25 C) (Max) (mV) 0.15 GBW (Typ) (MHz) 20 Features EMI Hardened, Shutdown, Small Size, Zero Crossover Slew rate (Typ) (V/us) 10 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 1.5 Iq per channel (Typ) (mA) 1.5 Vn at 1 kHz (Typ) (nV/rtHz) 8.5 CMRR (Typ) (dB) 114 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 0.9 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.0005
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Vos (offset voltage @ 25 C) (Max) (mV) 0.15 GBW (Typ) (MHz) 20 Features EMI Hardened, Shutdown, Small Size, Zero Crossover Slew rate (Typ) (V/us) 10 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 1.5 Iq per channel (Typ) (mA) 1.5 Vn at 1 kHz (Typ) (nV/rtHz) 8.5 CMRR (Typ) (dB) 114 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 0.9 Output current (Typ) (mA) 65 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.0005
SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 VSSOP (DGS) 10 9 mm² 3 x 3 WSON (DRG) 8 9 mm² 3 x 3
  • Precision with Zero-Crossover Distortion:
    • Low Offset Voltage: 150 µV (Maximum)
    • High CMRR: 114 dB
    • Rail-to-Rail I/O
  • Low Input Bias Current: 0.9 pA (Maximum)
  • 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
  • Precision with Zero-Crossover Distortion:
    • Low Offset Voltage: 150 µV (Maximum)
    • High CMRR: 114 dB
    • Rail-to-Rail I/O
  • Low Input Bias Current: 0.9 pA (Maximum)
  • 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

The OPA320 (single) and OPA2320 (dual) are a new generation of 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 an 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.

The OPA320 (single) and OPA2320 (dual) are a new generation of 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 an 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.

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Technical documentation

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Type Title Date
* Data sheet OPAx320x Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO, CMOS Operational Amplifier With Shutdown datasheet (Rev. F) PDF | HTML 16 Dec 2016
E-book An Engineer’s Guide to Designing with Precision Amplifiers 29 Apr 2021
Application note Cascading Precision Op Amp Stages for Optimal AC and DC Performance PDF | HTML 17 Aug 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note OPA320, OPA320S, OPA2320, OPA2320S EMI Immunity Performance 24 May 2013

Design & development

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Package Pins Download
SOIC (D) 8 View options
SON (DRG) 8 View options
VSSOP (DGK) 8 View options
VSSOP (DGS) 10 View options

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