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參數資料
| 型號： | AD8627 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Precision Low Power Single-Supply JFET Amplifier |
| 中文描述： | 精密低功耗單電源結型場效應管放大器 |
| 文件頁數： | 13/20頁 |
| 文件大小： | 568K |
| 代理商： | AD8627 |
AD8627/AD8626/AD8625
APPLICATIONS
The AD862x is one of the smallest and most economical
JFETs offered. It has true single-supply capability and has
an input voltage range that extends below the negative rail,
allowing the part to accommodate input signals below ground.
The rail-to-rail output of the AD862x provides the maximum
dynamic range in many applications. To provide a low offset,
low noise, high impedance input stage, the AD862x uses
n-channel JFETs The input common-mode voltage extends
from 0.2 V below –V
S
to 2 V below +V
S
. Driving the input of the
amplifier, configured in unity gain buffer, closer than 2 V to the
positive rail causes an increase in common-mode voltage error,
as illustrated in Figure 15, and a loss of amplifier bandwidth.
This loss of bandwidth causes the rounding of the output
waveforms shown in Figure 39 and Figure 40, which have inputs
that are 1 V and 0 V from +V
S
, respectively.
Rev. B | Page 13 of 20
The AD862x will not experience phase reversal with input
signals close to the positive rail, as shown in Figure 29. For input
voltages greater than +V
SY
, a resistor in series with the AD862x’s
noninverting input prevents phase reversal at the expense of
greater input voltage noise. This current limiting resistor should
also be used if there is a possibility of the input voltage
exceeding the positive supply by more than 300 mV, or if an
input voltage is applied to the AD862x when ±V
SY
= 0. Either of
these conditions will damage the amplifier if the condition
exists for more than 10 seconds. A 100 k resistor allows the
amplifier to withstand up to 10 V of continuous overvoltage,
while increasing the input voltage noise by a negligible amount.
TIME (2
μ
s/DIV)
0
V
INPUT
OUTPUT
V
SY
= 5V
Figure 39. Unity Gain Follower Response to 0 V to 4 V Step
TIME (2
μ
s/DIV)
0
V
INPUT
OUTPUT
V
SY
= 5V
Figure 40. Unity Gain Follower Response to 0 V to 5 V Step
相關PDF資料 |
PDF描述 |
|---|---|
| AD8625 | 16 A SPDT MINIATURE POWER RELAY |
| AD8626 | Precision Low Power Single-Supply JFET Amplifier |
| AD8625AR | Precision Low Power Single-Supply JFET Amplifier |
| AD8625AR-REEL | Precision Low Power Single-Supply JFET Amplifier |
| AD8625AR-REEL7 | Precision Low Power Single-Supply JFET Amplifier |
相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8627AKSR2 | 制造商:Analog Devices 功能描述: |
| AD8627AKS-R2 | 功能描述:IC OPAMP JFET 5MHZ PREC SC70-5 RoHS:否 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標準包裝:2,500 系列:- 放大器類型:通用 電路數:1 輸出類型:滿擺幅 轉換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°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) |
| AD8627AKS-REEL | 制造商:Analog Devices 功能描述:OP AMP SGL GP R-R O/P 13V/26V 5PIN SC-70 - Tape and Reel |
| AD8627AKS-REEL7 | 制造商:Analog Devices 功能描述:OP AMP SGL GP R-R O/P 13V/26V 5PIN SC-70 - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:PRECISION SINGLE SUPPLY DI-JET AMP - Tape and Reel |
| AD8627AKSZ | 制造商:Analog Devices 功能描述:IC,low pwr JFET amplifier,AD8627AKSZ |
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