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OPA211_08

更新时间： 2024-11-19 04:11:47
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德州仪器 - TI 运算放大器
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17页 635K
描述
1.1nV/☆Hz Noise, Low Power, Precision Operational Amplifier in Small DFN-8 Package

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OPA211_08 数据手册

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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  
1
FEATURES  
DESCRIPTION  
23  
•
LOW VOLTAGE NOISE: 1.1nV/√Hz at 1kHz  
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.  
•
INPUT VOLTAGE NOISE:  
80nVPP (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  
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.  
GAIN BANDWIDTH PRODUCT:  
80MHz (G = 100)  
45MHz (G = 1)  
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).  
•
•
•
SLEW RATE: 27V/µs  
16-BIT SETTLING: 700ns  
WIDE SUPPLY RANGE:  
±2.25V to ±18V, +4.5V to +36V  
•
•
•
RAIL-TO-RAIL OUTPUT  
The OPA211 series is specified over  
a wide  
OUTPUT CURRENT: 30mA  
DFN-8 (3×3mm), MSOP-8, AND SO-8  
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 TA = –40°C to  
+125°C.  
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  
INPUT VOLTAGE NOISE DENSITY vs FREQUENCY  
100  
10  
MEDICAL  
1
0.1  
1
10  
100  
1k  
10k  
100k  
Frequency (Hz)  
1
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.  
2
3
PowerPAD is a trademark of Texas Instruments.  
All other trademarks are the property of their respective owners.  
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  
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