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Precision op amps (Vos<1mV)

OPA27

ACTIVE

Ultra-low-noise (4.5-nV/√Hz), 100-µV offset, unity gain stable precision operational amplifier

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Data sheet

OPA27

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 44 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Vos (offset voltage at 25°C) (max) (mV) 0.22 Offset drift (typ) (µV/°C) 0.4 Input bias current (max) (pA) 80000 GBW (typ) (MHz) 8 Slew rate (typ) (V/µs) 1.9 Rail-to-rail No Iq per channel (typ) (mA) 3.3 Vn at 1 kHz (typ) (nV√Hz) 3.2 CMRR (typ) (dB) 122 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.025 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 3.2 Input common mode headroom (to positive supply) (typ) (V) -3.2 Output swing headroom (to negative supply) (typ) (V) 1.2 Output swing headroom (to positive supply) (typ) (V) -1.2
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 44 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Vos (offset voltage at 25°C) (max) (mV) 0.22 Offset drift (typ) (µV/°C) 0.4 Input bias current (max) (pA) 80000 GBW (typ) (MHz) 8 Slew rate (typ) (V/µs) 1.9 Rail-to-rail No Iq per channel (typ) (mA) 3.3 Vn at 1 kHz (typ) (nV√Hz) 3.2 CMRR (typ) (dB) 122 Rating Catalog Operating temperature range (°C) -40 to 85 Iout (typ) (A) 0.025 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 3.2 Input common mode headroom (to positive supply) (typ) (V) -3.2 Output swing headroom (to negative supply) (typ) (V) 1.2 Output swing headroom (to positive supply) (typ) (V) -1.2
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) PDIP (P) 8 92.5083 mm² (9.81 mm × 9.43 mm)
  • LOW NOISE: 4.5nV/Hz max at 1kHz
  • LOW OFFSET: 100µV max
  • LOW DRIFT: 0.4µV/°C
  • HIGH OPEN-LOOP GAIN: 117dB min
  • HIGH COMMON-MODE REJECTION: 100dB min
  • HIGH POWER-SUPPLY REJECTION: 94dB min
  • FITS OP-07, OP-05, AD510, AND AD517 SOCKETS
  • APPLICATIONS
    • PRECISION INSTRUMENTATION
    • DATA ACQUISITION
    • TEST EQUIPMENT
    • PROFESSIONAL AUDIO EQUIPMENT
    • TRANSDUCER AMPLIFIERS
    • RADIATION HARD EQUIPMENT

All trademarks are the property of their respective owners.
  • LOW NOISE: 4.5nV/Hz max at 1kHz
  • LOW OFFSET: 100µV max
  • LOW DRIFT: 0.4µV/°C
  • HIGH OPEN-LOOP GAIN: 117dB min
  • HIGH COMMON-MODE REJECTION: 100dB min
  • HIGH POWER-SUPPLY REJECTION: 94dB min
  • FITS OP-07, OP-05, AD510, AND AD517 SOCKETS
  • APPLICATIONS
    • PRECISION INSTRUMENTATION
    • DATA ACQUISITION
    • TEST EQUIPMENT
    • PROFESSIONAL AUDIO EQUIPMENT
    • TRANSDUCER AMPLIFIERS
    • RADIATION HARD EQUIPMENT

All trademarks are the property of their respective owners.

The OPA27 and OPA37 are ultra-low noise, high-precision monolithic operational amplifiers.

Laser-trimmed thin-film resistors provide excellent long-term voltage offset stability and allow superior voltage offset compared to common zener-zap techniques.

A unique bias current cancellation circuit allows bias and offset current specifications to be met over the full –40°C to +85°C temperature range.

The OPA27 is internally compensated for unity-gain stability. The decompensated OPA37 requires a closed-loop gain 5.

The Texas Instruments’ OPA27 and OPA37 are improved replacements for the industry-standard OP-27 and OP-37.

The OPA27 and OPA37 are ultra-low noise, high-precision monolithic operational amplifiers.

Laser-trimmed thin-film resistors provide excellent long-term voltage offset stability and allow superior voltage offset compared to common zener-zap techniques.

A unique bias current cancellation circuit allows bias and offset current specifications to be met over the full –40°C to +85°C temperature range.

The OPA27 is internally compensated for unity-gain stability. The decompensated OPA37 requires a closed-loop gain 5.

The Texas Instruments’ OPA27 and OPA37 are improved replacements for the industry-standard OP-27 and OP-37.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet Ultra-Low Noise, Precision Operational Amplifiers datasheet (Rev. C) Aug 29, 2005
Application brief Level Shifting Signals With Differential Amplifiers (Rev. A) Apr 2, 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
Application note An Error Analysis of the ISO102 in a Small Signal Measuring Application Sep 27, 2000
Application note Operational Amplifier Macromodels: A Comparison Sep 27, 2000

Design & development

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

Evaluation board

AMP-PDK-EVM — Amplifier performance development kit evaluation module

The amplifier performance development kit (PDK) is an evaluation module (EVM) kit to test common operational amplifier (op amp) parameters and is compatible with most op amps and comparators. The EVM kit offers a main board with several socketed daughtercard options to fit package needs, allowing (...)

User guide: PDF | HTML
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Calculation tool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

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Calculation tool

OPAMP-NOISECALC — Noise Calculator

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

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Package Pins CAD symbols, footprints & 3D models
SOIC (D) 8 Ultra Librarian
PDIP (P) 8 Ultra Librarian
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