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OPA843

更新时间： 2024-11-24 02:58:47
品牌 Logo 应用领域
德州仪器 - TI /
页数 文件大小 规格书
22页 436K
描述
Dual, Wideband, Low-Noise, Voltage-Feedback Operational Amplifier

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OPA843 数据手册

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OPA842  
OPA842  
SBOS267A – NOVEMBER 2002 – REVISED DECEMBER 2002  
Wideband, Low Distortion, Unity-Gain Stable,  
Voltage-Feedback OPERATIONAL AMPLIFIER  
FEATURES  
DESCRIPTION  
The OPA842 provides a level of speed and dynamic range  
previously unattainable in a monolithic op amp. Using unity-  
gain stable, voltage-feedback architecture with two internal  
gain stages, the OPA842 achieves exceptionally low har-  
monic distortion over a wide frequency range. The “classic”  
differential input provides all the familiar benefits of precision  
op amps, such as bias current cancellation and very low  
inverting current noise compared with wideband current  
differential gain/phase performance, low-voltage noise, and  
high output current drive make the OPA842 ideal for most  
high dynamic range applications.  
● UNITY-GAIN BANDWIDTH: 400MHz  
● GAIN-BANDWIDTH PRODUCT: 200MHz  
● LOW INPUT VOLTAGE NOISE: 2.6nV/√Hz  
● VERY LOW DISTORTION: –93dBc (5MHz)  
● HIGH OPEN-LOOP GAIN: 110dB  
● FAST 12-BIT SETTLING: 22ns (0.01%)  
● LOW DC VOLTAGE OFFSET: 300µV Typical  
●
PROFESSIONAL LEVEL DIFF GAIN/PHASE ERROR:  
0.003%/0.008°  
Unity-gain stability makes the OPA842 particularly suitable  
for low-gain differential amplifiers, transimpedance amplifi-  
ers, gain of +2 video line drivers, wideband integrators, and  
low-distortion Analog-to-Digital Converter (ADC) buffers.  
Where higher gain or even lower harmonic distortion is  
required, consider the OPA843—a higher-gain bandwidth  
and lower-noise version of the OPA842.  
APPLICATIONS  
● ADC/DAC BUFFER DRIVER  
● LOW DISTORTION “IF” AMPLIFIER  
● ACTIVE FILTER CONFIGURATION  
● LOW-NOISE DIFFERENTIAL RECEIVER  
● HIGH-RESOLUTION IMAGING  
● TEST INSTRUMENTATION  
OPA842 RELATED PRODUCTS  
INPUT NOISE  
GAIN-BANDWIDTH  
PRODUCT (MHz)  
√Hz  
SINGLES  
VOLTAGE (nV/  
)
OPA843  
OPA846  
OPA847  
2.0  
1.1  
0.8  
800  
2500  
3700  
● PROFESSIONAL AUDIO  
● OPA642 UPGRADE  
+5V  
+5V  
REFT  
(+3V)  
2kΩ  
2kΩ  
RS  
24.9Ω  
0.1µF  
VIN  
IN  
IN  
OPA842  
50Ω  
100pF  
ADS850  
14-Bit  
10MSPS  
–5V  
402Ω  
2kΩ  
0.1µF  
402Ω  
(+2V) (+1V)  
REFB VREF  
2kΩ  
SEL  
AC-Coupled to 14-Bit ADS850 Interface  
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.  
PRODUCTION DATA information is current as of publication date.  
Copyright © 2002, Texas Instruments Incorporated  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
www.ti.com  
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OPA843 替代型号

型号 品牌 替代类型 描述 数据表
OPA643 TI

功能相似

 Wideband Low Distortion, High Gain OPERATIONAL AMPLIFIER
OPA846 TI

功能相似

 Wideband, Low-Noise, Voltage-Feedback OPERATIONAL AMPLIFIER
OPA842 TI

功能相似

 Wideband, Low Distortion, Unity-Gain Stable, Voltage-Feedback OPERATIONAL AMPLIFIER

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