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OPA2211A
  • OPA2211A
  • OPA2211A
  • OPA2211A

OPA2211A

ACTIVE

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

Texas Instruments OPA2211A Product Info

1 April 2026 2

Parameters

Number of channels

2

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)

0.15

Offset drift (typ) (µV/°C)

0.35

Input bias current (max) (pA)

175000

GBW (typ) (MHz)

45

Features

Shutdown, Small Size

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

Catalog

Operating temperature range (°C)

-40 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

Package

HSOIC (DDA)-8-29.4 mm² 4.9 x 6

Features

  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
  • Low voltage noise: 1.1 nV/√Hz at 1 kHz
  • Input voltage noise: 80 nVPP (0.1 to 10 Hz)
  • THD + N: –136 dB (G = 1, ƒ = 1 kHz)
  • Offset voltage: 125 µV (maximum)
  • Offset voltage drift: 0.35 µV/°C (typical)
  • Low supply current: 3.6 mA/Ch (typical)
  • Unity-gain stable
  • Gain bandwidth product:
    • 80 MHz (G = 100)
    • 45 MHz (G = 1)
  • Slew rate: 27 V/µs
  • 16-Bit settling: 700 ns
  • Wide supply range:
    • ±2.25 to ±18 V, 4.5 V to 36 V
  • Rail-to-rail output
  • Output current: 30 mA
  • SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8

Description

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. 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 OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

The OPAx211 series of precision operational amplifiers achieves very low 1.1-nV/√Hz noise density with a supply current of only 3.6 mA. 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 OPAx211 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPAx211 series of operational amplifiers provides 700-ns settling time to 16-bit accuracy throughout 10-V output swings. This ac performance, combined with only 125 µV of offset and 0.35 µV/°C of drift over temperature, makes the OPAx211 series a great choice for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPAx211 series is specified over a wide dual-power supply range of ±2.25 to ±18 V, or for single-supply operation from 4.5 to 36 V.

The OPA211 is available in the small SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8 packages. The dual version OPA2211 is available in a SON-8 (3 mm × 3 mm) or an SO-8 PowerPAD™ package. This series of operational amplifiers is specified from TA = –40°C to +125°C.

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