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參數(shù)資料
| 型號： | AD8027 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers |
| 中文描述： | 低失真，高速軌到軌輸入/輸出放大器 |
| 文件頁數(shù)： | 18/24頁 |
| 文件大小： | 478K |
| 代理商： | AD8027 |
AD8027/AD8028
WIDEBAND OPERATION
Voltage feedback amplifiers can use a wide range of resistor
values to set their gain. Proper design of the application’s feed-
back network requires consideration of the following issues:
Rev. B | Page 18 of 24
Poles formed by the amplifier’s input capacitances
with the resistances seen at the amplifier’s input
terminals
Effects of mismatched source impedances
Resistor value impact on the application’s voltage noise
Amplifier loading effects
The AD8027/AD8028 has an input capacitance of 2 pF. This
input capacitance will form a pole with the amplifier’s feedback
network, destabilizing the loop. For this reason, it is generally
desirable to keep the source resistances below 500 , unless
some capacitance is included in the feedback network. Likewise,
keeping the source resistances low will also take advantage of
the AD8027/AD8028’s low input referred voltage noise of
4.3 nV/√Hz.
With a wide bandwidth of over 190 MHz, the AD8027/AD8028
has numerous applications and configurations. The
AD8027/AD8028 shown in Figure 57 is configured as a nonin-
verting amplifier. The inverting configuration is shown in
Figure 58 and an easy selection table of gain, resistor values,
bandwidth, slew rate, and noise performance is presented in
Table 5.
+V
–V
C2
10
μ
F
C1
0.1
μ
F
C4
0.1
μ
F
C3
10
μ
F
V
OUT
R
G
R1
R
F
SELECT
V
IN
R1 = R
F
||R
G
AD8027/
AD8028
+
–
03327-A-056
Figure 57. Wideband Noninverting Gain Configuration
+V
–V
C2
10
μ
F
C1
0.1
μ
F
C4
0.1
μ
F
C3
10
μ
F
R1
C5
V
OUT
R
G
R1 = R
F
||R
G
R
F
V
IN
SELECT
AD8027/
AD8028
+
–
03327-A-057
C
F
Figure 58. Wideband Inverting Gain Configuration
Table 5. Component Values, Bandwidth, and Noise
Performance (V
S
=
±
2.5 V)
Noise Gain
(Noninverting)
1
2
10
R
SOURCE
()
50
50
50
R
F
()
0
499
499 54.9
R
G
()
N/A
499
–3 dB
SS BW
(MHz)
190
95
13
Output
Noise with
Resistors
(nV/√Hz)
4.4
10
45
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8027_05 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers |
| AD8027AR | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 制造商:Analog Devices 功能描述:IC OP-AMP LOW POWER |
| AD8027AR-EBZ | 功能描述:BOARD EVAL FOR AD8027AR RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估板 - 運算放大器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- |
| AD8027AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 制造商:Rochester Electronics LLC 功能描述:SOIC, SINGLE LOW-PWR VLTG-FDBK OP AMP - Tape and Reel |
| AD8027AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O 制造商:Analog Devices 功能描述:OP Amp Single GP R-R I/O ±6V/12V 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:HIGH SPEED, RAIL-TO-RAIL IN/OUT OP-AMP - Tape and Reel |
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