OPA861

更新时间： 2024-10-26 21:53:19

品牌	Logo	应用领域
德州仪器 - TI		放大器
页数	文件大小	规格书
28页	603K
描述
Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)

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OPA861 数据手册

OPA861

SBOS338–AUGUST 2005

Wide Bandwidth

OPERATIONAL TRANSCONDUCTANCE

AMPLIFIER (OTA)

FEATURES

DESCRIPTION

•

Wide Bandwidth (80MHz, Open-Loop, G = +5)

The OPA861 is a versatile monolithic component

designed for wide-bandwidth systems, including high

performance video, RF and IF circuitry. The OPA861

is a wideband, bipolar operational transconductance

amplifier (OTA).

High Slew Rate (900V/µs)

High Transconductance (95mA/V)

External I_Q-Control

Low Quiescent Current (5.4mA)

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 OPA861, 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 OPA861 can be adjusted

with an external resistor, allowing bandwidth, quiesc-

ent current, and gain trade-offs to be optimized.

APPLICATIONS

•

Video/Broadcast Equipment

Communications Equipment

High-Speed Data Acquisition

Wideband LED Drivers

Control Loop Amplifiers

Wideband Active Filters

Line Drivers

Used as a basic building block, the OPA861 sim-

plifies the design of AGC amplifiers, LED driver

circuits for fiber optic transmission, integrators for fast

pulses, fast control loop amplifiers and control ampli-

fiers for capacitive sensors and active filters. The

OPA861 is available in SO-8 and SOT23-6 sur-

face-mount packages.

−

10MHz

Low−Pass Filter

C₁

20kHz

Low−Pass Filter

V_IN

V_OUT

C₂

10k

100k

10M

100M

Frequency (Hz)

Low−Pass Negative Impedance Converter (NIC) Filter

Frequency Response of 20kHz and 10MHz

Low−Pass NIC Filters

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.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...28

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与OPA861相关器件

型号	品牌	获取价格	描述	数据表
OPA861ID	TI	获取价格	Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)
OPA861IDBVR	TI	获取价格	Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)
OPA861IDBVRG4	TI	获取价格	Wide Bandwidth Operational Transconductance Amplifier 6-SOT-23 -40 to 85
OPA861IDBVT	TI	获取价格	Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)
OPA861IDG4	TI	获取价格	Wide Bandwidth Operational Transconductance Amplifier 8-SOIC -40 to 85
OPA861IDR	TI	获取价格	Wide Bandwidth OPERATIONAL TRANSCONDUCTANCE AMPLIFIER (OTA)
OPA861IDRG4	TI	获取价格	Wide Bandwidth Operational Transconductance Amplifier 8-SOIC -40 to 85
OPA862	TI	获取价格	12.6V、低噪声、单端到差分、高输入阻抗放大器
OPA862IDR	TI	获取价格	12.6V、低噪声、单端到差分、高输入阻抗放大器 \| D \| 8 \| -40 to 125
OPA862IDT	TI	获取价格	12.6V、低噪声、单端到差分、高输入阻抗放大器 \| D \| 8 \| -40 to 125

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