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OPA843

更新时间： 2024-11-03 22:50:47
品牌 Logo 应用领域
BB 运算放大器
页数 文件大小 规格书
22页 375K
描述
Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER

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OPA843 数据手册

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OPA843  
O
P
A
8
4
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SBOS268A – DECEMBER 2002 – OCTOBER 2003  
Wideband, Low Distortion, Medium Gain,  
Voltage-Feedback OPERATIONAL AMPLIFIER  
DESCRIPTION  
FEATURES  
The OPA843 provides a level of speed and dynamic range  
previously unattainable in a monolithic op amp. Using a high  
Gain Bandwidth (GBW), two gain-stage design, the OPA843  
gives a medium gain range device with exceptional dynamic  
range. The “classic” differential input complements this high  
dynamic range with DC precision beyond most high-speed  
amplifier products. Very low input offset voltage and current,  
high Common-Mode Rejection Ratio (CMRR) and Power-  
Supply Rejection Ratio (PSRR), and high open-loop gain  
combine to give a high DC precision amplifier along with low  
noise and high 3rd-order intercept.  
● HIGH BANDWIDTH: 260MHz (G = +5)  
● GAIN BANDWIDTH PRODUCT: 800MHz  
● LOW INPUT VOLTAGE NOISE: 2.0nV/√Hz  
● VERY LOW DISTORTION: –96dBc (5MHz)  
● HIGH OPEN-LOOP GAIN: 110dB  
● FAST 12-BIT SETTLING: 10.5ns (0.01%)  
● LOW INPUT OFFSET VOLTAGE: 300µV  
● OUTPUT CURRENT: ±100mA  
12- to 16-bit converter interfaces will benefit from this combi-  
nation of features. High-speed transimpedance applications  
can be implemented with exceptional DC precision as well.  
Differential configurations using two OPA843s can deliver  
very low distortion to high output voltages, as shown below.  
APPLICATIONS  
● ADC/DAC BUFFER AMPLIFIER  
● LOW DISTORTION “IF” AMPLIFIER  
● ACTIVE FILTERS  
● LOW-NOISE RECEIVER  
OPA843 RELATED PRODUCTS  
● WIDEBAND TRANSIMPEDANCE  
● TEST INSTRUMENTATION  
● PROFESSIONAL AUDIO  
INPUT NOISE  
GAIN-BANDWIDTH  
PRODUCT (MHz)  
√Hz  
SINGLES  
VOLTAGE (nV/  
)
OPA842  
OPA846  
OPA847  
2.6  
1.2  
200  
1750  
3900  
0.85  
● OPA643 UPGRADE  
+5V  
DIFFERENTIAL DISTORTION vs OUTPUT VOLTAGE  
OPA843  
–85  
–90  
GD = 10  
RL = 400Ω  
F = 5MHz  
–5V  
40.2Ω  
40.2Ω  
402Ω  
1:1  
VI  
–95  
RL  
132Ω  
VO = 10VI  
50Ω  
2nd-Harmonic  
402Ω  
400Ω  
–100  
–105  
–110  
3rd-Harmonic  
+5V  
OPA843  
1
10  
–5V  
Output Voltage Swing (Vp-p)  
Very Low Distortion Differential Driver  
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.  
All 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 Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
Copyright © 2002-2003, Texas Instruments Incorporated  
www.ti.com  
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