参数资料
| 型号： | AD8065AR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 14/29页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP VF R-R LN LP 30MA 8SOIC |
| 设计资源： | Unipolar, Precision DC Digital-to-Analog Conversion Using AD5426/32/43 8-Bit to12-Bit DACs (CN0034) Programmable Gain Element Using AD5426/32/43 Current Output DACs (CN0038) Programmable Gain Element Using AD5450/1/2/3 Current Output DAC Family (CN0055) |
| 标准包装： | 98 |
| 系列： | FastFET™ |
| 放大器类型： | 电压反馈 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 180 V/µs |
| -3db带宽： | 145MHz |
| 电流 - 输入偏压： | 3pA |
| 电压 - 输入偏移： | 400µV |
| 电流 - 电源： | 6.6mA |
| 电流 - 输出 / 通道： | 30mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 24 V，±2.5 V ~ 12 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 管件 |
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AD8065/AD8066
Rev. J | Page 20 of 28
THEORY OF OPERATION
The AD8065/AD8066 are voltage feedback operational amplifiers
that combine a laser-trimmed JFET input stage with the Analog
Devices eXtra Fast Complementary Bipolar (XFCB) process,
resulting in an outstanding combination of precision and speed.
The supply voltage range is from 5 V to 24 V. The amplifiers feature
a patented rail-to-rail output stage capable of driving within 0.5 V
of either power supply while sourcing or sinking up to 30 mA.
Also featured is a single-supply input stage that handles common-
mode signals from below the negative supply to within 3 V of the
positive rail. Operation beyond the JFET input range is possible
because of an auxiliary bipolar input stage that functions with
input voltages up to the positive supply. The amplifiers operate as
if they have a rail-to-rail input and exhibit no phase reversal
behavior for common-mode voltages within the power supply.
With voltage noise of 7 nV/√Hz and 88 dBc distortion for
1 MHz, 2 V p-p signals, the AD8065/AD8066 are a great choice
for high resolution data acquisition systems. Their low noise,
sub-pA input current, precision offset, and high speed make
them superb preamps for fast photodiode applications. The
speed and output drive capability of the AD8065/AD8066 also
make them useful in video applications.
CLOSED-LOOP FREQUENCY RESPONSE
The AD8065/AD8066 are classic voltage feedback amplifiers
with an open-loop frequency response that can be approximated as
the integrator response shown in Figure 53. Basic closed-loop
frequency response for inverting and noninverting configurations
can be derived from the schematics shown.
NONINVERTING CLOSED-LOOP FREQUENCY
RESPONSE
Solving for the transfer function
()
G
crossover
G
F
G
crossover
I
O
R
f
s
R
f
V
×
π
+
×
π
=
2
where fcrossover is the frequency where the amplifier’s open-loop
gain equals 0 db
At dc
G
F
I
O
R
V
+
=
Closed-loop 3 dB frequency
G
F
G
crossover
3dB
R
f
+
×
=
INVERTING CLOSED-LOOP FREQUENCY
RESPONSE
()
G
crossover
G
F
crossover
I
O
R
f
R
s
R
f
V
×
π
+
×
π
=
2
At dc
G
F
I
O
R
V
=
Closed-loop 3 dB frequency
G
F
G
crossover
dB
R
f
+
×
=
3
RF
A
VO
RG
VI
VE
FREQUENCY (MHz)
80
60
0.01
100
OP
E
N
-LOOP
GAI
N
(A)
(dB)
0.1
10
1
40
20
0
fcrossover = 65MHz
A = (2
π× fcrossover)/s
RF
VE
A
VO
RG
VI
02916-E
-053
Figure 53. Open-Loop Gain vs. Frequency and Basic Connections
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8065AR-EBZ | 功能描述:BOARD EVAL FOR AD8065AR RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8065AR-REEL | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P ±12V/24V 8-Pin SOIC N T/R |
| AD8065AR-REEL7 | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P ±12V/24V 8-Pin SOIC N T/R 制造商:Rochester Electronics LLC 功能描述:SOIC HI PERF HI SPD FET AMP W/ DISABLE - Tape and Reel |
| AD8065ART-EBZ | 功能描述:BOARD EVAL FOR AD8065ART RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8065ART-R2 | 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P 制造商:Analog Devices 功能描述:OP Amp Single Volt Fdbk R-R O/P ±12V/24V 5-Pin SOT-23 T/R 制造商:Analog Devices 功能描述:OP AMP SGL VOLT FDBK R-R O/P 12V/24V 5PIN SOT-23 - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:SOT23 HI PERF HI SPD FET AMP W/ DISABLE - Bulk 制造商:Analog Devices 功能描述:IC OP-AMP HIGH PERFORMANCE |
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