OPA211_15 Datasheet, PDF (1/45 Pages) Texas Instruments – Low Power, Precision Operational Amplifier

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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
•1 Low Voltage Noise: 1.1 nV/√Hz at 1 kHz
• Input Voltage Noise: 80 nV_PP (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 to 36 V
• Rail-to-Rail Output
• Output Current: 30 mA
• SON-8 (3 mm × 3 mm), VSSOP-8, and SOIC-8
2 Applications
• PLL Loop Filters
• Low-Noise, Low-Power Signal Processing
• 16-Bit ADC Drivers
• DAC Output Amplifiers
• Active Filters
• Low-Noise Instrumentation Amps
• Ultrasound Amplifiers
• Professional Audio Preamplifiers
• Low-Noise Frequency Synthesizers
• Infrared Detector Amplifiers
• Hydrophone Amplifiers
• Geophone Amplifiers
• Medical
3 Description
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 T_A =
–40°C to +125°C.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
SOIC (8)
4.90 mm × 3.90 mm
OPA211
SON (8)
3.00 mm × 3.00 mm
VSSOP (8)
3.00 mm × 3.00 mm
OPA2211
SON (8)
3.00 mm × 3.00 mm
SO PowerPAD (8) 4.90 mm × 3.90 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Input Voltage Noise Density vs Frequency
100
10
1
0.1
1
10
100
1k
10k
100k
Frequency (Hz)
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.