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High-speed op amps (GBW ≥ 50 MHz)

OPA814

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600-MHz, high-precision unity-gain-stable FET-input operational amplifier

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Data sheet

OPA814

ACTIVE
Data sheet Order now

Product details

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 6 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 250 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 750 Vn at flatband (typ) (nV√Hz) 5.3 Vn at 1 kHz (typ) (nV√Hz) 9.5 Iq per channel (typ) (mA) 16 Vos (offset voltage at 25°C) (max) (mV) 0.25 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 70 2nd harmonic (dBc) -110 3rd harmonic (dBc) -130 Frequency of harmonic distortion measurement (MHz) 1
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 6 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 GBW (typ) (MHz) 250 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 750 Vn at flatband (typ) (nV√Hz) 5.3 Vn at 1 kHz (typ) (nV√Hz) 9.5 Iq per channel (typ) (mA) 16 Vos (offset voltage at 25°C) (max) (mV) 0.25 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 100 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 1 Iout (typ) (mA) 70 2nd harmonic (dBc) -110 3rd harmonic (dBc) -130 Frequency of harmonic distortion measurement (MHz) 1
SOT-23 (DBV) 5 8.12 mm² (2.9 mm × 2.8 mm) SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm)
  • Wide bandwidth:
    • Gain-bandwidth product: 250 MHz
    • Bandwidth (G = 1 V/V): 600 MHz
    • Large-signal bandwidth (2 V PP): 200 MHz
    • Slew rate: 750 V/µs
  • High precision:
    • Input offset voltage: 250 µV (maximum)
    • Input offset voltage drift: 3.5 µV/°C (maximum)
  • Input voltage noise: 5.3 nV/√Hz
  • Input bias current: 2 pA
  • Low distortion (R L = 100 Ω, V O = 2 V PP):
    • HD2, HD3 at 10 MHz: –75 dBc, –85 dBc
  • Supply range: 6 V to 12.6 V
  • Supply current: 16 mA
  • Performance upgrade to OPA656
  • Wide bandwidth:
    • Gain-bandwidth product: 250 MHz
    • Bandwidth (G = 1 V/V): 600 MHz
    • Large-signal bandwidth (2 V PP): 200 MHz
    • Slew rate: 750 V/µs
  • High precision:
    • Input offset voltage: 250 µV (maximum)
    • Input offset voltage drift: 3.5 µV/°C (maximum)
  • Input voltage noise: 5.3 nV/√Hz
  • Input bias current: 2 pA
  • Low distortion (R L = 100 Ω, V O = 2 V PP):
    • HD2, HD3 at 10 MHz: –75 dBc, –85 dBc
  • Supply range: 6 V to 12.6 V
  • Supply current: 16 mA
  • Performance upgrade to OPA656

The OPA814 is a unity-gain stable, voltage-feedback operational amplifier for high-speed, high-precision, and wide-dynamic-range applications.

The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage that features a wide gain bandwidth of 250 MHz and a supply range from 6 V to 12.6 V. The fast slew rate of 750 V/µs allows a wide large-signal bandwidth and low distortion when used as high impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.

The OPA814 offers extremely low input offset voltage of ±250 µV and offset voltage drift of ±3.5-µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3 nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment, as well as medical and scientific instrumentation.

The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.

The OPA814 is a unity-gain stable, voltage-feedback operational amplifier for high-speed, high-precision, and wide-dynamic-range applications.

The OPA814 has a low-noise junction gate field-effect transistor (JFET) input stage that features a wide gain bandwidth of 250 MHz and a supply range from 6 V to 12.6 V. The fast slew rate of 750 V/µs allows a wide large-signal bandwidth and low distortion when used as high impedance buffer in high-speed digitizers, active probes, and other test and measurement applications.

The OPA814 offers extremely low input offset voltage of ±250 µV and offset voltage drift of ±3.5-µV/°C. The combination of picoamperes of input bias current and low input voltage noise (5.3 nV/√ Hz) makes the OPA814 an excellent wideband transimpedance amplifier in optical test and communication equipment, as well as medical and scientific instrumentation.

The OPA814 is available in an 8-pin SOIC package. This device is specified to operate over the industrial temperature range of –40°C to +85°C.
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Technical documentation

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* Data sheet OPA814600-MHz, High-Precision, Unity-Gain Stable, FET-Input Operational Amplifier datasheet (Rev. A) PDF | HTML Nov 6, 2023
Product overview High Speed Amplifiers for Motor Encoders and Position Sensing PDF | HTML Apr 11, 2025
Product overview High Speed Amplifiers for In-Vitro Diagnostics (IVD) Analog Front End PDF | HTML Apr 10, 2025
Product overview Pairing High-Speed JFET Amplifiers With Hi-Z DAQ Systems PDF | HTML Apr 8, 2024

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