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AD825_04 Datasheet(PDF) 1 Page - Analog Devices

Part No. AD825_04
Description  Low Cost, General-Purpose High Speed JFET Amplifier
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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Low Cost, General-Purpose
High Speed JFET Amplifier
AD825
Rev. F
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
FEATURES
High speed
41 MHz, −3 dB bandwidth
125 V/µs slew rate
80 ns settling time
Input bias current of 20 pA and noise current of 10 fA/√Hz
Input voltage noise of 12 nV/√Hz
Fully specified power supplies: ±5 V to ±15 V
Low distortion: −76 dB at 1 MHz
High output drive capability
Drives unlimited capacitance load
50 mA min output current
No phase reversal when input is at rail
Available in 8-lead SOIC
APPLICATIONS
CCDs
Low distortion filters
Mixed gain stages
Audio amplifiers
Photo detector interfaces
ADC input buffers
DAC output buffers
CONNECTION DIAGRAMS
NC = NO CONNECT
AD825
TOP VIEW
(Not to Scale)
NC
1
–IN
2
+IN
3
–VS 4
NC
8
+VS
7
OUTPUT
6
NC
5
Figure 1. 8-Lead Plastic SOIC (R) Package
NC
1
NC
2
NC
3
–INPUT
4
+INPUT
5
–VS 6
NC
7
NC
8
NC
10
NC
16
NC
15
NC
14
+VS
13
OUTPUT
12
NC
11
NC
9
AD825
TOP VIEW
(Not to Scale)
NC = NO CONNECT
Figure 2. 16-Lead Plastic SOIC (R-16) Package
GENERAL DESCRIPTION
The AD825 is a superbly optimized operational amplifier for
high speed, low cost, and dc parameters, making it ideally suited
for a broad range of signal conditioning and data acquisition
applications. The ac performance, gain, bandwidth, slew rate,
and drive capability are all very stable over temperature. The
AD825 also maintains stable gain under varying load
conditions.
The unique input stage has ultralow input bias current and
input current noise. Signals that go to either rail on this high
performance input do not cause phase reversals at the output.
These features make the AD825 a good choice as a buffer for
MUX outputs, creating minimal offset and gain errors.
The AD825 is fully specified for operation with dual ±5 V and
±15 V supplies. This power supply flexibility, and the low supply
current of 6.5 mA with excellent ac characteristics under all
supply conditions, makes the AD825 well-suited for many
demanding applications.
10V
200ns
10V
Figure 3. Performance with Rail-to-Rail Input Signals




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