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OPA860 PDF预览

OPA860

更新时间: 2024-10-28 11:12:15
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
36页 722K
描述
高带宽运算跨导放大器和缓冲器

OPA860 数据手册

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OPA860  
www.ti.com ....................................................................................................................................................... SBOS331CJUNE 2005REVISED AUGUST 2008  
Wide Bandwidth  
OPERATIONAL TRANSCONDUCTANCE  
AMPLIFIER (OTA) and BUFFER  
1
OTA FEATURES  
DESCRIPTION  
2
Wide Bandwidth (80MHz, Open-Loop, G = +5)  
The OPA860 is a versatile monolithic component  
designed for wide-bandwidth systems, including high  
performance video, RF and IF circuitry. It includes a  
wideband, bipolar operational transconductance  
amplifier (OTA), and voltage buffer amplifier.  
High Slew Rate (900V/µs)  
High Transconductance (95mA/V)  
External IQ-Control  
The OTA or voltage-controlled current source can be  
viewed as an ideal transistor. Like a transistor, it has  
three terminals—a high impedance input (base), a  
low-impedance input/output (emitter), and the current  
output (collector). The OTA, however, is self-biased  
and bipolar. The output collector current is zero for a  
zero base-emitter voltage. AC inputs centered about  
zero produce an output current, which is bipolar and  
centered about zero. The transconductance of the  
OTA can be adjusted with an external resistor,  
allowing bandwidth, quiescent current, and gain  
trade-offs to be optimized.  
BUFFER FEATURES  
Closed-Loop Buffer  
Wide Bandwidth (1600MHz, VO = 1VPP  
High Slew Rate (4000V/µs)  
60mA Output Current  
)
OPA860 FEATURES  
Low Quiescent Current (11.2mA)  
Versatile Circuit Function  
APPLICATIONS  
Also included in the OPA860 is an uncommited  
closed-loop, unity-gain buffer. This provides  
1600MHz bandwidth and 4000V/µs slew rate.  
Baseline Restore Circuits  
Video/Broadcast Equipment  
Communications Equipment  
High-Speed Data Acquisition  
Wideband LED Driver  
AGC-Multiplier  
ns-Pulse Integrator  
Control Loop Amplifier  
OPA660 Upgrade  
Used as  
a basic building block, the OPA860  
simplifies the design of AGC amplifiers, LED driver  
circuits for fiber optic transmission, integrators for fast  
pulses, fast control loop amplifiers and control  
amplifiers for capacitive sensors and active filters.  
The OPA860 is available in an SO-8 surface-mount  
package.  
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
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 the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2005–2008, Texas Instruments Incorporated  

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