OPA211 (正在供货)

1.1nV/(sqrt)Hz Noise, Low Power, Precision Operational Amplifier in DFN-8 Pkg

1.1nV/(sqrt)Hz Noise, Low Power, Precision Operational Amplifier in DFN-8 Pkg - OPA211


The OPA2x11 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 OPA2x11 series make these devices an excellent choice as a loop filter amplifier in PLL applications.

In precision data acquisition applications, the OPA2x11 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 OPA2x11 series suitable for driving high-precision 16-bit analog-to-digital converters (ADCs) or buffering the output of high-resolution digital-to-analog converters (DACs).

The OPA2x11 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. A 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.


  • 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

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参数 与其它产品相比 精密 运算放大器 (Vos<1mV)

Number of Channels (#)
Total Supply Voltage (Min) (+5V=5, +/-5V=10)
Total Supply Voltage (Max) (+5V=5, +/-5V=10)
GBW (Typ) (MHz)
Slew Rate (Typ) (V/us)
Vos (Offset Voltage @ 25C) (Max) (mV)
Offset Drift (Typ) (uV/C)
Iq per channel (Typ) (mA)
Vn at 1kHz (Typ) (nV/rtHz)
CMRR (Typ) (dB)
Operating Temperature Range (C)
Package Group
Package Size: mm2:W x L (PKG)
Input Bias Current (Max) (pA)
Output Current (Typ) (mA)
OPA211 OPA209
1    1   
4.5    4.5   
36    36   
45    18   
27    6.4   
Out    Out   
0.05    0.15   
0.15    1   
3.6    2.2   
1.1    2.2   
120    130   
Catalog    Catalog   
-40 to 125    -40 to 125   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
See datasheet (SON)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
8SOIC: 29 mm2: 6 x 4.9(SOIC)
5SOT-23: 5 mm2: 1.6 x 2.9(SOT-23)
8VSSOP: 15 mm2: 4.9 x 3(VSSOP)   
125000    4500   
30    65   
Small Size   
Bipolar    Bipolar   

其它合格版本 OPA211

版本 器件型号 定义
增强型产品 OPA211-EP 支持国防、航天和医疗应用
高温 OPA211-HT 用于严苛环境下的高温产品

WEBENCH® Designer OPA211

Amplifier Topology
Desired Power Supply Voltage
Positive Supply (Vcc):  V
Negative Supply (Vee):  V
Allowed Power Supply(Vcc-Vee) = 4.5 to 36.0 V
Desired Input and Output Requirements
  Min Max
Vin  V  V
Vout  V  V
Minimum Temperature = -40.0 °C
Maximum Temperature = 125.0 °C