Product details

Architecture FET / CMOS Input, Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 1600 BW @ Acl (MHz) 350 Acl, min spec gain (V/V) 7 Slew rate (Typ) (V/us) 700 Vn at flatband (Typ) (nV/rtHz) 4.8 Vn at 1 kHz (Typ) (nV/rtHz) 7 Iq per channel (Typ) (mA) 14 Vos (offset voltage @ 25 C) (Max) (mV) 1.8 Rail-to-rail No Features Decompensated Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 89 Input bias current (Max) (pA) 20 Offset drift (Typ) (uV/C) 2 Output current (Typ) (mA) 70 2nd harmonic (dBc) 74 3rd harmonic (dBc) 106 @ MHz 5
Architecture FET / CMOS Input, Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 8 Total supply voltage (Max) (+5V=5, +/-5V=10) 12 GBW (Typ) (MHz) 1600 BW @ Acl (MHz) 350 Acl, min spec gain (V/V) 7 Slew rate (Typ) (V/us) 700 Vn at flatband (Typ) (nV/rtHz) 4.8 Vn at 1 kHz (Typ) (nV/rtHz) 7 Iq per channel (Typ) (mA) 14 Vos (offset voltage @ 25 C) (Max) (mV) 1.8 Rail-to-rail No Features Decompensated Rating Catalog Operating temperature range (C) -40 to 85 CMRR (Typ) (dB) 89 Input bias current (Max) (pA) 20 Offset drift (Typ) (uV/C) 2 Output current (Typ) (mA) 70 2nd harmonic (dBc) 74 3rd harmonic (dBc) 106 @ MHz 5
  • High Gain Bandwidth Product: 1.6 GHz
  • High Bandwidth 275 MHz (G = 10)
  • Slew Rate 700 V/µs (G = 10, 1-V Step)
  • Low-Input Offset Voltage: ±250 µV
  • Low-Input Bias Current: 2 pA
  • Low-Input Voltage Noise: 4.8 nV/√Hz
  • High-Output Current: 70 mA
  • Fast Overdrive Recovery
  • High Gain Bandwidth Product: 1.6 GHz
  • High Bandwidth 275 MHz (G = 10)
  • Slew Rate 700 V/µs (G = 10, 1-V Step)
  • Low-Input Offset Voltage: ±250 µV
  • Low-Input Bias Current: 2 pA
  • Low-Input Voltage Noise: 4.8 nV/√Hz
  • High-Output Current: 70 mA
  • Fast Overdrive Recovery

The OPA657 device combines a high gain-bandwidth, low-distortion, voltage-feedback operational amplifier with a low voltage noise JFET-input stage to offer a very high dynamic range amplifier for high-precision analog-to-digital converter (ADC) driving or wideband transimpedance applications. Photodiode applications achieve improved noise and bandwidth using this decompensated, high gain-bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. The very low input bias current and capacitance supports this performance even for relatively high source impedance. Broadband photodetector applications benefit from the low voltage noise JFET inputs for the OPA657. The JFET input contributes virtually no current noise, which makes the device ideal for high-gain photodiode applications.

The OPA657 device combines a high gain-bandwidth, low-distortion, voltage-feedback operational amplifier with a low voltage noise JFET-input stage to offer a very high dynamic range amplifier for high-precision analog-to-digital converter (ADC) driving or wideband transimpedance applications. Photodiode applications achieve improved noise and bandwidth using this decompensated, high gain-bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. The very low input bias current and capacitance supports this performance even for relatively high source impedance. Broadband photodetector applications benefit from the low voltage noise JFET inputs for the OPA657. The JFET input contributes virtually no current noise, which makes the device ideal for high-gain photodiode applications.

Technical documentation

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* Data sheet OPA657-DIE 1.6-GHz, Low-Noise, FET-Input Operational Amplifier datasheet 10 Aug 2016
Technical article 3 common questions when designing with high-speed amplifiers 17 Jul 2020
Technical article How to reduce distortion in high-voltage, high-frequency signal generation for AWGs 30 Oct 2018
Technical article What are the advantages of using JFET-input amplifiers in high-speed applications? 19 Jun 2018
Technical article Unique active mux capability combines buffer and switch into one solution 10 Oct 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005

Design & development

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Evaluation board

DEM-OPA-SO-1A — Single op-amp evaluation module for SO-8 package

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

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Evaluation board

DEM-OPA-SOT-1A — Single op amp evaluation module for SOT23-5/6 package

The DEM-OPA-SOT-1A is a demonstration fixture that helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the SOT(DBV) package.

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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Calculation tool

VOLT-DIVIDER-CALC — Voltage Divider Determines A Set of Resistors for a Voltage Divider

VOLT-DIVIDER-CALC quickly determines a set of resistors for a voltage divider. This KnowledgeBase Javascript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. This calculator can also be used to design non-inverting attentuation circuits.

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