1 Features

? Wide bandwidth:

– Gain-bandwidth product: 400 MHz

– Bandwidth (G = 1 V/V): 800 MHz

– Large-signal bandwidth (2 VPP): 250 MHz

– Slew rate: 1000 V/μs

? High precision:

– Input offset voltage: 250 μV (maximum)

– Input offset voltage drift: 3.5 μV/°C (maximum)

? Input voltage noise: 4.5 nV/√Hz

? Input bias current: 2 pA

? Low distortion (RL = 100 Ω, VO = 2 VPP):

– HD2, HD3 at 10 MHz: –86 dBc, –100 dBc

? Supply range: 6 V to 12.6 V

? Supply current: 23.5 mA

? Shutdown current: 55 μA

? Performance upgrade to OPA656

2 Applications

? High-speed data acquisition (DAQ)

? Active probes

? Oscilloscopes

? Wideband transimpedance amplifiers (TIAs)

? Wafer scanning equipment

? Optical communication modules

? Optical time-domain reflectometry (OTDR)

? Test and measurement front-ends

? Medical and chemical analyzers

3 Description

The OPA817 is a unity-gain stable, voltage-feedback

operational amplifier for high-speed, high-precision

and wide dynamic range applications.

The OPA817 has a low-noise junction gate fieldeffect

transistor (JFET) input stage that features a

wide gain-bandwidth of 400-MHz and a supply range

from 6-V to 12.6-V. The fast slew rate of 1000-

V/μs allows a wide large-signal bandwidth and low

distortion when used as high impedance buffer in

high-speed digitizers, active probes and other test and

measurement applications.

The OPA817 offers extremely low input offset voltage

of ±250-μV and offset voltage drift of ±3.5-μV/°C. The

combination of pico-amperes of input bias current

and low input voltage noise (4.5-nV/√Hz) makes the

OPA817 an ideal wideband transimpedance amplifier

in optical test and communication equipment as well

as medical and scientific instrumentation.

The OPA817 is available in an 8-lead WSON package

with an exposed thermal pad for heat dissipation.

This device is specified to operate over the industrial

temperature range of –40°C to +105°C.

OPA818屬于開發(fā)板，套件，編程器 > 評估板 - 運算放大器。美國德州儀器公司制造生產(chǎn)的OPA818評估板 - 運算放大器運算放大器評估板是裝有元器件的電路，用于提供特定集成電路或器件的工作實例。該產(chǎn)品族中的電路板提供了運算放大器實例。每個 IC 的通道類型有單通道、雙通道、三通道、四通道和八通道，放大器類型包括音頻、自動歸零、緩沖器、斬波器、電流反饋、電流檢測、差動、差分、四通道、儀表、隔離、J-FET、限幅、對數(shù)、功率、可編程增益、采樣保持、跨阻、可變增益、視頻、電壓反饋和零漂移。