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參數資料
| 型號： | AD8028 |
| 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： | 18/24頁 |
| 文件大小： | 478K |
| 代理商： | AD8028 |
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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| AD8027AR | Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers |
| AD8027AR-REEL | Low Distortion, High Speed Rail-to-Rail Input/Output Amplifiers |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD8028AR | 制造商:Rochester Electronics LLC 功能描述:HIGH PERFORMANCE RRIO - Bulk 制造商:Analog Devices 功能描述:AMP LOW DISTORTION RRI/O SMD 8028 |
| AD8028AR-EBZ | 功能描述:BOARD EVAL FOR AD8028AR RoHS:是 類別:編程器，開發系統 >> 評估板 - 運算放大器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- |
| AD8028ARM | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R I/O ±6V/12V 10-Pin MSOP 制造商:Analog Devices 功能描述:AMP LOW DISTORTION RRI/O SMD 8028 |
| AD8028ARM-REEL | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R I/O ±6V/12V 10-Pin MSOP T/R |
| AD8028ARM-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Dual GP R-R I/O ±6V/12V 10-Pin MSOP T/R 制造商:Rochester Electronics LLC 功能描述:HIGH PERFORMANCE RRIO - Tape and Reel |
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