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Precision op amps (Vos<1mV)

OPA211-EP

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Enhanced Product 1.1nV/rtHz Noise, Low Power, Precision Operational Amplifier

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Data sheet

OPA211-EP

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.1 Offset drift (typ) (µV/°C) 0.35 Input bias current (max) (pA) 200000 GBW (typ) (MHz) 45 Features Shutdown Slew rate (typ) (V/µs) 27 Rail-to-rail Out Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 CMRR (typ) (dB) 120 Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125 Iout (typ) (A) 0.03 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1.8 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) -0.2 THD + N at 1 kHz (typ) (%) 0.000015
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 36 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4.5 Vos (offset voltage at 25°C) (max) (mV) 0.1 Offset drift (typ) (µV/°C) 0.35 Input bias current (max) (pA) 200000 GBW (typ) (MHz) 45 Features Shutdown Slew rate (typ) (V/µs) 27 Rail-to-rail Out Iq per channel (typ) (mA) 3.6 Vn at 1 kHz (typ) (nV√Hz) 1.1 CMRR (typ) (dB) 120 Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125 Iout (typ) (A) 0.03 Architecture Bipolar Input common mode headroom (to negative supply) (typ) (V) 1.8 Input common mode headroom (to positive supply) (typ) (V) -1.4 Output swing headroom (to negative supply) (typ) (V) 0.2 Output swing headroom (to positive supply) (typ) (V) -0.2 THD + N at 1 kHz (typ) (%) 0.000015
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • LOW VOLTAGE NOISE: 1.1nV/√Hz at 1kHz
  • INPUT VOLTAGE NOISE:
    80nVPP (0.1Hz to 10Hz)
  • THD+N: –136dB (G = 1, f = 1kHz)
  • OFFSET VOLTAGE: 180µV (max)
  • OFFSET VOLTAGE DRIFT: 0.35µV/°C (typ)
  • LOW SUPPLY CURRENT: 3.6mA/Ch (typ)
  • UNITY-GAIN STABLE
  • GAIN BANDWIDTH PRODUCT:
    80MHz (G = 100)
    45MHz (G = 1)
  • SLEW RATE: 27V/µs
  • 16-BIT SETTLING: 700ns
  • WIDE SUPPLY RANGE:
    ±2.25V to ±18V, +4.5V to +36V
  • RAIL-TO-RAIL OUTPUT
  • OUTPUT CURRENT: 30mA
  • LOW VOLTAGE NOISE: 1.1nV/√Hz at 1kHz
  • INPUT VOLTAGE NOISE:
    80nVPP (0.1Hz to 10Hz)
  • THD+N: –136dB (G = 1, f = 1kHz)
  • OFFSET VOLTAGE: 180µV (max)
  • OFFSET VOLTAGE DRIFT: 0.35µV/°C (typ)
  • LOW SUPPLY CURRENT: 3.6mA/Ch (typ)
  • UNITY-GAIN STABLE
  • GAIN BANDWIDTH PRODUCT:
    80MHz (G = 100)
    45MHz (G = 1)
  • SLEW RATE: 27V/µs
  • 16-BIT SETTLING: 700ns
  • WIDE SUPPLY RANGE:
    ±2.25V to ±18V, +4.5V to +36V
  • RAIL-TO-RAIL OUTPUT
  • OUTPUT CURRENT: 30mA

The OPA211 series of precision operational amplifiers achieves very low 1.1nV/√Hz noise density with a supply current of only 3.6mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high speed, and wide output swing of the OPA211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPA211 series of op amps provides 700ns settling time to 16-bit accuracy throughout 10V output swings. This ac performance, combined with only 125µV of offset and 0.35µV/°C of drift over temperature, makes the OPA211 ideal for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPA211 is specified over a wide dual-power supply range of ±2.25V to ±18V, or for single-supply operation from +4.5V to +36V.

The OPA211 is available in a small MSOP-8 package. This op amp is specified from TA = –55°C to +125°C.

The OPA211 series of precision operational amplifiers achieves very low 1.1nV/√Hz noise density with a supply current of only 3.6mA. This series also offers rail-to-rail output swing, which maximizes dynamic range.

The extremely low voltage and low current noise, high speed, and wide output swing of the OPA211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPA211 series of op amps provides 700ns settling time to 16-bit accuracy throughout 10V output swings. This ac performance, combined with only 125µV of offset and 0.35µV/°C of drift over temperature, makes the OPA211 ideal for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPA211 is specified over a wide dual-power supply range of ±2.25V to ±18V, or for single-supply operation from +4.5V to +36V.

The OPA211 is available in a small MSOP-8 package. This op amp is specified from TA = –55°C to +125°C.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet OPA211-EP Datasheet datasheet Jun 25, 2012
* Radiation & reliability report OPA211MDGKTEP Reliability Report Mar 22, 2013
* VID OPA211-EP VID V6212619 Jun 21, 2016
Application note How to Measure Total Harmonic Distortion of an Op-Amp and THD + N Fundamentals PDF | HTML Nov 9, 2023
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML Mar 28, 2017
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. D) PDF | HTML Sep 30, 2014

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