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OPA211, OPA2211

SBOS377H – OCTOBER 2006 – REVISED NOVEMBER 2015

OPA2x11 1.1-nv/

√Hz Noise, Low Power, Precision Operational Amplifier

1 Features

3 Description

The

OPA211

series

of

precision

operational

1

•

Low Voltage Noise: 1.1 nV/

√Hz at 1 kHz

amplifiers achieves very low 1.1-nV/

√Hz noise density

•

with a supply current of only 3.6 mA. This series also

•

THD + N: –136 dB (G = 1, ƒ = 1 kHz)

offers rail-to-rail output swing, which maximizes

dynamic range.

•

Offset Voltage: 125

μV (Maximum)

•

Offset Voltage Drift: 0.35

μV/°C (Typical)

The extremely low voltage and low current noise,

high-speed, and wide output swing of the OPA211

•

Low Supply Current: 3.6 mA/Ch (Typical)

series make these devices an excellent choice as a

•

Unity-Gain Stable

loop filter amplifier in PLL applications.

•

Gain Bandwidth Product:

In

precision

data

acquisition

applications,

the

–

80 MHz (G = 100)

OPA211 series of operational amplifiers provides

–

45 MHz (G = 1)

700-ns settling time to 16-bit accuracy throughout 10-

V output swings. This ac performance, combined with

•

Slew Rate: 27 V/

μs

only 125

μV of offset and 0.35 μV/°C of drift over

•

16-Bit Settling: 700 ns

temperature, makes the OPA211 ideal for driving

•

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

high-precision

16-bit

analog-to-digital

converters

(ADCs) or buffering the output of high-resolution

•

Rail-to-Rail Output

digital-to-analog converters (DACs).

•

Output Current: 30 mA

The OPA211 series is specified over a wide dual-

•

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

power supply range of ±2.25 to ±18 V, or for single-

supply operation from 4.5 to 36 V.

2 Applications

The OPA211 is available in the small SON-8 (3 mm ×

•

PLL Loop Filters

3 mm), VSSOP-8, and SOIC-8 packages. A dual

•

Low-Noise, Low-Power Signal Processing

version, the OPA2211, is available in the SON-8 (3

•

16-Bit ADC Drivers

mm × 3 mm) or an SO-8 PowerPAD™ package. This

•

DAC Output Amplifiers

–40°C to +125°C.

•

Active Filters

•

Low-Noise Instrumentation Amps

Device Information(1)

•

Ultrasound Amplifiers

PART NUMBER

PACKAGE

BODY SIZE (NOM)

•

Professional Audio Preamplifiers

SOIC (8)

4.90 mm × 3.90 mm

•

Low-Noise Frequency Synthesizers

OPA211

SON (8)

3.00 mm × 3.00 mm

•

Infrared Detector Amplifiers

VSSOP (8)

3.00 mm × 3.00 mm

SON (8)

3.00 mm × 3.00 mm

•

Hydrophone Amplifiers

OPA2211

SO PowerPAD (8)

4.90 mm × 3.90 mm

•

Geophone Amplifiers

(1) For all available packages, see the orderable addendum at

•

Medical

the end of the data sheet.

Input Voltage Noise Density vs Frequency

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. UNLESS OTHERWISE NOTED, this document contains PRODUCTION

DATA.