OPA2211A

1.1nV/rtHz 噪声、低功耗精密运算放大器

The OPA211 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 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 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 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 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, the OPA2211, is available in the 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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Low Voltage Noise: 1.1 nV/√Hz at 1 kHz

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Input Voltage Noise: 80 nVPP 0.1 to 10 Hz

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THD + N: –136 dB G = 1, ƒ = 1 kHz

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Offset Voltage: 125 µV Maximum

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Offset Voltage Drift: 0.35 µV/°C Typical

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Low Supply Current: 3.6 mA/Ch Typical

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Unity-Gain Stable

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Gain Bandwidth Product:

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80 MHz G = 100

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45 MHz G = 1

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Slew Rate: 27 V/µs

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16-Bit Settling: 700 ns

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Wide Supply Range: ±2.25 to ±18 V, 4.5 to 36 V

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Rail-to-Rail Output

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Output Current: 30 mA

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SON-8 3 mm × 3 mm, VSSOP-8, and SOIC-8