參數資料
型號: AD8655ARZ-REEL7
廠商: Analog Devices Inc
文件頁數: 7/20頁
文件大?。?/td> 0K
描述: IC OPAMP GP R-R CMOS 28MHZ 8SOIC
設計資源: Single Supply Low Noise LED Current Source Driver Using a Current Output DAC in the Reverse Mode (CN0139)
標準包裝: 1,000
系列: DigiTrim®
放大器類型: 通用
電路數: 1
輸出類型: 滿擺幅
轉換速率: 11 V/µs
增益帶寬積: 28MHz
電流 - 輸入偏壓: 1pA
電壓 - 輸入偏移: 50µV
電流 - 電源: 3.7mA
電流 - 輸出 / 通道: 220mA
電壓 - 電源,單路/雙路(±): 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應商設備封裝: 8-SO
包裝: 帶卷 (TR)
Data Sheet
AD8655/AD8656
Rev. E | Page 15 of 20
THEORY OF OPERATION
The AD8655/AD8656 amplifiers are voltage feedback, rail-to-rail
input and output precision CMOS amplifiers, which operate
from 2.7 V to 5.0 V of power supply voltage. These amplifiers
use the Analog Devices DigiTrim technology to achieve a higher
degree of precision than is available from most CMOS amplifiers.
DigiTrim technology, used in a number of Analog Devices
amplifiers, is a method of trimming the offset voltage of the
amplifier after it is packaged. The advantage of post-package
trimming is that it corrects any offset voltages caused by the
mechanical stresses of assembly.
The AD8655/AD8656 are available in standard op amp pinouts,
making DigiTrim completely transparent to the user. The input
stage of the amplifiers is a true rail-to-rail architecture, allowing
the input common-mode voltage range of the amplifiers to
extend to both positive and negative supply rails. The open-
loop gain of the AD8655/AD8656 with a load of 10 k is
typically 110 dB.
The AD8655/AD8656 can be used in any precision op amp
application. The amplifier does not exhibit phase reversal for
common-mode voltages within the power supply. The AD8655/
AD8656 are great choices for high resolution data acquisition
systems with voltage noise of 2.7 nV/√Hz and THD + Noise of
–103 dB for a 2 V p-p signal at 10 kHz. Their low noise, sub-pA
input bias current, precision offset, and high speed make them
superb preamps for fast filter applications. The speed and output
drive capability of the AD8655/AD8656 also make them useful
in video applications.
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