参数资料
型号: AD823AARZ-RL
厂商: Analog Devices Inc
文件页数: 1/20页
文件大小: 0K
描述: IC OPAMP FET RR 17MHZ DUAL 8SOIC
标准包装: 2,500
放大器类型: J-FET
电路数: 2
输出类型: 满摆幅
转换速率: 35 V/µs
-3db带宽: 19MHz
电流 - 输入偏压: 1.3pA
电压 - 输入偏移: 700µV
电流 - 电源: 6.3mA
电流 - 输出 / 通道: 44mA
电压 - 电源,单路/双路(±): 3 V ~ 36 V,±1.5 V ~ 18 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: 带卷 (TR)
Wide Supply Dual, 17 MHz, Rail-to-Rail
FET Input Amplifier
Data Sheet
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
2012 Analog Devices, Inc. All rights reserved.
FEATURES
Single-supply operation
Output swings rail-to-rail
Input voltage range extends below ground
Single-supply capability from 3 V to 36 V
High load drive
Capacitive load drive of 470 pF (G = +1, 25% overshoot)
Linear output current of 40 mA, 0.5 V from supplies
Excellent ac performance on 2.6 mA/amplifier
3 dB bandwidth of 17 MHz, G = +1
325 ns settling time to 0.01% (2 V step)
Slew rate of 30 V/μs
Low distortion: 108 dBc at 20 kHz (G = 1, RL = 2 kΩ)
Good dc performance
700 μV maximum input offset voltage
1 μV/°C offset voltage drift
25 pA maximum input bias current
Low noise: 14 nV/√Hz at 10 kHz
No phase inversion with inputs to the supply rails
APPLICATIONS
Photodiode preamps
Active filters
12-bit to 16-bit data acquisition systems
Medical instrumentation
Precision instrumentation
GENERAL DESCRIPTION
The AD823A is a dual precision, 17 MHz, JFET input op amp
manufactured in the extra fast complementary bipolar (XFCB)
process. The AD823A can operate from a single supply of 3 V
to 36 V or from dual supplies of ±1.5 V to ±18 V. It has true
single-supply capability with an input voltage range extending
below ground in single-supply mode. Output voltage swing extends
to within 20 mV of each rail for IOUT ≤ 100 μA, providing
outstanding output dynamic range. It also has a linear output
current of 40 mA, 0.5 V from the supply rails.
An offset voltage of 700 μV maximum, an offset voltage drift of
1 μV/°C, and typical input bias currents of 0.3 pA provide dc
precision with source impedances up to 1 GΩ. The AD823A
provides 17 MHz, 3 dB bandwidth, and a 30 V/μs slew rate with
a low supply current of only 2.6 mA per amplifier. It also provides
low input voltage noise of 14 nV/√Hz and 108 dB SFDR at
20 kHz. The AD823A has low input capacitances (0.6 pF differ-
ential and 1.3 pF common mode) and drives more than 500 pF
of direct capacitive load as a follower. This lets the amplifier
handle a wide range of load conditions.
CONNECTION DIAGRAM
AD823A
OUT1
+IN2
–IN2
OUT2
+VS
–IN1
+IN1
–VS
1
2
3
4
8
7
6
5
0
9439-
001
Figure 1. 8-Lead SOIC
09
43
9-
102
OUT1
1
–IN1
2
+IN1
3
–VS 4
+VS
8
OUT2
7
–IN2
6
+IN2
5
AD823A
TOP VIEW
(Not to Scale)
Figure 2. 8-Lead MSOP
200s/DIV
500mV/DIV
0V
3.0V
1.5V
0
94
39-
049
VS = 3V
CL = 50pF
G = +1
Figure 3. Output Swing, +VS = +3 V, G = +1
This combination of ac and dc performance, plus the outstanding
load drive capability, results in an exceptionally versatile ampli-
fier for applications such as ADC drivers, high speed active filters,
and other low voltage, high dynamic range systems.
The AD823A is available over the industrial temperature range
of 40°C to +85°C and is offered in an 8-lead SOIC package and
an 8-lead MSOP package.
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