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Precision op amps (Vos<1mV)

OPA4277

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Quad, low-offset (10 µV), precision op amp

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Data sheet
Errata

OPA4277

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4 Vos (offset voltage @ 25 C) (Max) (mV) 0.05 GBW (Typ) (MHz) 1 Features — Slew rate (Typ) (V/us) 0.8 Rail-to-rail No Offset drift (Typ) (uV/C) 0.15 Iq per channel (Typ) (mA) 0.79 Vn at 1 kHz (Typ) (nV/rtHz) 8 CMRR (Typ) (dB) 140 Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 2800 Output current (Typ) (mA) 35 Architecture Bipolar THD + N @ 1 kHz (Typ) (%) 0.002
Number of channels (#) 4 Total supply voltage (Max) (+5V=5, +/-5V=10) 36 Total supply voltage (Min) (+5V=5, +/-5V=10) 4 Vos (offset voltage @ 25 C) (Max) (mV) 0.05 GBW (Typ) (MHz) 1 Features — Slew rate (Typ) (V/us) 0.8 Rail-to-rail No Offset drift (Typ) (uV/C) 0.15 Iq per channel (Typ) (mA) 0.79 Vn at 1 kHz (Typ) (nV/rtHz) 8 CMRR (Typ) (dB) 140 Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 2800 Output current (Typ) (mA) 35 Architecture Bipolar THD + N @ 1 kHz (Typ) (%) 0.002
PDIP (N) 14 181 mm² 19.3 x 9.4 SOIC (D) 14 52 mm² 8.65 x 6
  • Ultralow Offset Voltage: 10 µV
  • Ultralow Drift: ±0.1 µV/°C
  • High Open-Loop Gain: 134 dB
  • High Common-Mode Rejection: 140 dB
  • High Power Supply Rejection: 130 dB
  • Low Bias Current: 1-nA maximum
  • Wide Supply Range: ±2 V to ±18 V
  • Low Quiescent Current: 800 µA/amplifier
  • Single, Dual, and Quad Versions
  • Replaces OP-07, OP-77, and OP-177
  • Ultralow Offset Voltage: 10 µV
  • Ultralow Drift: ±0.1 µV/°C
  • High Open-Loop Gain: 134 dB
  • High Common-Mode Rejection: 140 dB
  • High Power Supply Rejection: 130 dB
  • Low Bias Current: 1-nA maximum
  • Wide Supply Range: ±2 V to ±18 V
  • Low Quiescent Current: 800 µA/amplifier
  • Single, Dual, and Quad Versions
  • Replaces OP-07, OP-77, and OP-177

The OPAx277 series precision operational amplifiers replace the industry standard OP-177. They offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultralow offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. Single, dual, and quad versions have identical specifications, for maximum design flexibility.

OPAx277 series operational amplifiers operate from ±2-V to ±18-V supplies with excellent performance. Unlike most operational amplifiers which are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V to ±15-V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20 µV maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

OPA277 operational amplifiers are easy to use and free from phase inversion and the overload problems found in some other operational amplifiers. They are stable in unity gain and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

The OPAx277 series precision operational amplifiers replace the industry standard OP-177. They offer improved noise, wider output voltage swing, and are twice as fast with half the quiescent current. Features include ultralow offset voltage and drift, low bias current, high common-mode rejection, and high power supply rejection. Single, dual, and quad versions have identical specifications, for maximum design flexibility.

OPAx277 series operational amplifiers operate from ±2-V to ±18-V supplies with excellent performance. Unlike most operational amplifiers which are specified at only one supply voltage, the OPAx277 series is specified for real-world applications; a single limit applies over the ±5-V to ±15-V supply range. High performance is maintained as the amplifiers swing to their specified limits. Because the initial offset voltage (±20 µV maximum) is so low, user adjustment is usually not required. However, the single version (OPA277) provides external trim pins for special applications.

OPA277 operational amplifiers are easy to use and free from phase inversion and the overload problems found in some other operational amplifiers. They are stable in unity gain and provide excellent dynamic behavior over a wide range of load conditions. Dual and quad versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.
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Technical documentation

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Type Title Date
* Data sheet OPAx277 High Precision Operational Amplifiers datasheet (Rev. B) 30 Jun 2015
* Errata Errata for OPA277/2277/4277 Data Sheet SBOS079A: Improved Performance Graph 24 May 2011
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note OPA277, OPA2277, OPA4277 EMI Immunity Performance (Rev. A) 31 Oct 2012

Design & development

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OPAx277 TINA-TI Reference Design (Rev. G)

SBOC192G.TSC (356 KB) - TINA-TI Reference Design
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OPAx277 PSpice Model (Rev. G)

SBOM063G.ZIP (27 KB) - PSpice Model
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OPAx277 TINA-TI Spice Model (Rev. F)

SBOM271F.ZIP (11 KB) - TINA-TI Spice Model
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PDIP (N) 14 View options
SOIC (D) 14 View options

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