OPA211_08 Datasheet, PDF (1/17 Pages) Texas Instruments – 1.1nV/√Hz Noise, Low Power, Precision Operational Amplifier in Small DFN-8 Package

OPA211
OPA2211
OPA211
OPA2211
OPA211
OPA211
OPA2211
www.ti.com
SBOS377D – OCTOBER 2006 – REVISED FEBRUARY 2008
1.1nV/√Hz Noise, Low Power, Precision
Operational Amplifier in Small DFN-8 Package
FEATURES
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•23 LOW VOLTAGE NOISE: 1.1nV/√Hz at 1kHz
• INPUT VOLTAGE NOISE:
80nV_PP (0.1Hz to 10Hz)
• THD+N: –136dB (G = 1, f = 1kHz)
• OFFSET VOLTAGE: 125µV (max)
• OFFSET VOLTAGE DRIFT: 0.35µV/°C (typ)
• LOW SUPPLY CURRENT: 3.6mA/Ch (typ)
• UNITY GAIN STABLE
• GAIN BANDWIDTH PRODUCT:
80MHz (G = 100)
45MHz (G = 1)
• SLEW RATE: 27V/µs
• 16-BIT SETTLING: 700ns
• WIDE SUPPLY RANGE:
±2.25V to ±18V, +4.5V to +36V
• RAIL-TO-RAIL OUTPUT
• OUTPUT CURRENT: 30mA
• DFN-8 (3×3mm), MSOP-8, AND SO-8
APPLICATIONS
• PLL LOOP FILTER
• LOW-NOISE, LOW-POWER SIGNAL
PROCESSING
• 16-BIT ADC DRIVERS
• DAC OUTPUT AMPLIFIER
• ACTIVE FILTERS
• LOW-NOISE INSTRUMENTATION AMPS
• ULTRASOUND AMPLIFIERS
• PROFESSIONAL AUDIO PREAMPLIFIERS
• LOW-NOISE FREQUENCY SYNTHESIZERS
• INFRARED DETECTOR AMPLIFIERS
• HYDROPHONE AMPLIFIERS
• GEOPHONE AMPLIFIERS
• MEDICAL
DESCRIPTION
The OPA211 series of precision operational
amplifiers achieves very low 1.1nV/√Hz noise density
with a supply current of only 3.6mA. 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 op amps provides 700ns settling
time to 16-bit accuracy throughout 10V output swings.
This ac performance, combined with only 125µV of
offset and 0.35µV/°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 ±2.25V to ±18V, or
single-supply operation from +4.5V to +36V.
The OPA211 is available in the small DFN-8
(3×3mm), MSOP-8, and SO-8 packages. A dual
version, the OPA2211, is available in the DFN-8
(3×3mm) or an SO-8 PowerPAD™ package. This
series of op amps is specified from T_A = –40°C to
+125°C.
INPUT VOLTAGE NOISE DENSITY vs FREQUENCY
100
10
1
0.1
1
10
100
1k
10k
100k
Frequency (Hz)
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments.
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All other trademarks are the property of their respective owners.
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PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2006–2008, Texas Instruments Incorporated