Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 9 Vos (offset voltage @ 25 C) (Max) (mV) 0.1 GBW (Typ) (MHz) 16 Features Burr-Brown™ Audio Slew rate (Typ) (V/us) 55 Rail-to-rail No Offset drift (Typ) (uV/C) 0.4 Iq per channel (Typ) (mA) 7 Vn at 1 kHz (Typ) (nV/rtHz) 5.2 CMRR (Typ) (dB) 110 Rating Catalog Operating temperature range (C) -25 to 85 Input bias current (Max) (pA) 5 Output current (Typ) (mA) 45 Architecture FET THD + N @ 1 kHz (Typ) (%) 0.00003
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 9 Vos (offset voltage @ 25 C) (Max) (mV) 0.1 GBW (Typ) (MHz) 16 Features Burr-Brown™ Audio Slew rate (Typ) (V/us) 55 Rail-to-rail No Offset drift (Typ) (uV/C) 0.4 Iq per channel (Typ) (mA) 7 Vn at 1 kHz (Typ) (nV/rtHz) 5.2 CMRR (Typ) (dB) 110 Rating Catalog Operating temperature range (C) -25 to 85 Input bias current (Max) (pA) 5 Output current (Typ) (mA) 45 Architecture FET THD + N @ 1 kHz (Typ) (%) 0.00003
PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 3.91 x 4.9
  • Very Low Noise: 4.5 nV/√Hz at 10 kHz
  • Fast Settling Time:
    • OPA627—550 ns to 0.01%
    • OPA637—450 ns to 0.01%
  • Low VOS: 100-µV maximum
  • Low Drift: 0.8-µV/°C maximum
  • Low IB: 5-pA maximum
  • OPA627: Unity-Gain Stable
  • OPA637: Stable in Gain ≥ 5
  • Very Low Noise: 4.5 nV/√Hz at 10 kHz
  • Fast Settling Time:
    • OPA627—550 ns to 0.01%
    • OPA637—450 ns to 0.01%
  • Low VOS: 100-µV maximum
  • Low Drift: 0.8-µV/°C maximum
  • Low IB: 5-pA maximum
  • OPA627: Unity-Gain Stable
  • OPA637: Stable in Gain ≥ 5

The OPA6x7 Difet operational amplifiers provide a new level of performance in a precision FET operational amplifier. When compared to the popular OPA111 operational amplifier, the OPA6x7 has lower noise, lower offset voltage, and higher speed. The OPA6x7 is useful in a broad range of precision and high speed analog circuitry.

The OPA6x7 is fabricated on a high-speed, dielectrically-isolated complementary NPN/PNP process. It operates over a wide range of power supply voltage of ±4.5 V to ±18 V. Laser-trimmed Difet input circuitry provides high accuracy and low-noise performance comparable with the best bipolar-input operational amplifiers.

High frequency complementary transistors allow increased circuit bandwidth, attaining dynamic performance not possible with previous precision FET operational amplifiers. The OPA627 is unity-gain stable. The OPA637 is stable in gains equal to or greater than five.

Difet fabrication achieves extremely low input bias currents without compromising input voltage noise performance. Low input bias current is maintained over a wide input common-mode voltage range with unique cascode circuitry.

The OPA6x7 is available in plastic PDIP, SOIC, and metal TO-99 packages. Industrial and military temperature range models are available.

The OPA6x7 Difet operational amplifiers provide a new level of performance in a precision FET operational amplifier. When compared to the popular OPA111 operational amplifier, the OPA6x7 has lower noise, lower offset voltage, and higher speed. The OPA6x7 is useful in a broad range of precision and high speed analog circuitry.

The OPA6x7 is fabricated on a high-speed, dielectrically-isolated complementary NPN/PNP process. It operates over a wide range of power supply voltage of ±4.5 V to ±18 V. Laser-trimmed Difet input circuitry provides high accuracy and low-noise performance comparable with the best bipolar-input operational amplifiers.

High frequency complementary transistors allow increased circuit bandwidth, attaining dynamic performance not possible with previous precision FET operational amplifiers. The OPA627 is unity-gain stable. The OPA637 is stable in gains equal to or greater than five.

Difet fabrication achieves extremely low input bias currents without compromising input voltage noise performance. Low input bias current is maintained over a wide input common-mode voltage range with unique cascode circuitry.

The OPA6x7 is available in plastic PDIP, SOIC, and metal TO-99 packages. Industrial and military temperature range models are available.

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Technical documentation

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Type Title Date
* Data sheet OPA627 and OPA637 Precision High-Speed Difet® Operational Amplifiers datasheet (Rev. A) 16 Apr 2015
Application note MUX-Friendly, Precision Operational Amplifiers (Rev. B) 17 Dec 2020
Technical article TI Burr-Brown™ technology: always on the edge of audio innovation 19 Sep 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
More literature Circuit Board Layout Techniques 03 Oct 2016
Application note OPA627, OPA637 EMI Immunity Performance (Rev. A) 02 Nov 2012
Application note Compensate Transimpedance Amplifiers Intuitively (Rev. A) 30 Mar 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note Comparison of Noise Performance of FET Transimpedence Amp/Switched Integrator 27 Sep 2000
Application note Composite Op Amp Gives You The Best of Both Worlds 27 Sep 2000
Application note Digitally Programmable, Time-Continuous Active Filter 27 Sep 2000
Application note Fast Settling Low-Pass Filter 27 Sep 2000
Application note Improved Device Noise Performance For the 3650 Isolation Amplifier 27 Sep 2000

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

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DIYAMP-EVM — Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module

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SBAC037C.TSC (2591 KB) - TINA-TI Reference Design
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OPA627 TINA-TI Spice Model (Rev. B)

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OPA627 PSpice Model (Rev. B)

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Simulation tool

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This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
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Design tool

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Design tool

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This temperature sensing circuit uses a resistor in series with a negative–temperature–coefficient (NTC) thermistor to form a voltage divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
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CIRCUIT060006 — Bridge amplifier circuit

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Design tool

CIRCUIT060007 — Low-side, bidirectional current-sensing circuit

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CIRCUIT060008 — Full-wave rectifier circuit

This absolute value circuit can turn alternating current (AC) signals to single polarity signals. This circuit functions with limited distortion for ±10-V input signals at frequencies up to 50kHz and for signals as small as ±25mV at frequencies up to 1kHz.
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CIRCUIT060009 — Half-wave rectifier circuit

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CIRCUIT060010 — PWM generator circuit

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CIRCUIT060011 — Single-supply, second-order, multiple feedback high-pass filter circuit

The multiple-feedback (MFB) high-pass (HP) filter is a 2nd-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This HP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is high or (...)
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CIRCUIT060012 — Single-supply, 2nd-order, multiple feedback low-pass filter circuit

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CIRCUIT060014 — Voltage-to-current (V-I) converter circuit with MOSFET

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CIRCUIT060016 — Non-inverting microphone pre-amplifier circuit

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CIRCUIT060017 — Dual-supply, discrete, programmable gain amplifier circuit

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CIRCUIT060018 — Photodiode amplifier circuit

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CIRCUIT060019 — Inverting op amp with non-inverting positive reference voltage circuit

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CIRCUIT060020 — Inverting amplifier circuit

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CIRCUIT060074 — High-side current sensing with comparator circuit

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PDIP (P) 8 View options
SOIC (D) 8 View options
TO-99 (LMC) 8 View options

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  • Ongoing reliability monitoring

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