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AD8047AR 参数 Datasheet PDF下载

AD8047AR图片预览
型号: AD8047AR
PDF下载: 下载PDF文件 查看货源
内容描述: 250兆赫,通用电压反馈运算放大器 [250 MHz, General Purpose Voltage Feedback Op Amps]
分类和应用: 运算放大器放大器电路光电二极管
文件页数/大小: 16 页 / 480 K
品牌: AD [ ANALOG DEVICES ]
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a
FEATURES
Wide Bandwidth
AD8047, G = +1 AD8048, G = +2
Small Signal
250 MHz
260 MHz
Large Signal (2 V p-p) 130 MHz
160 MHz
5.8 mA Typical Supply Current
Low Distortion, (SFDR) Low Noise
–66 dBc typ @ 5 MHz
–54 dBc typ @ 20 MHz
5.2 nV/√Hz (AD8047), 3.8 nV/√Hz (AD8048) Noise
Drives 50 pF Capacitive Load
High Speed
Slew Rate 750 V/µs (AD8047), 1000 V/µs (AD8048)
Settling 30 ns to 0.01%, 2 V Step
±3
V to
±6
V Supply Operation
APPLICATIONS
Low Power ADC Input Driver
Differential Amplifiers
IF/RF Amplifiers
Pulse Amplifiers
Professional Video
DAC Current to Voltage Conversion
Baseband and Video Communications
Pin Diode Receivers
Active Filters/Integrators
PRODUCT DESCRIPTION
250 MHz, General Purpose
Voltage Feedback Op Amps
AD8047/AD8048
FUNCTIONAL BLOCK DIAGRAM
8-Pin Plastic Mini-DIP (N), Cerdip (Q)
and SO (R) Packages
NC
–INPUT
+INPUT
–V
S
1
2
3
4
8
7
6
NC
+V
S
OUTPUT
NC
AD8047/48
(Top View)
NC = NO CONNECT
5
The AD8047 and AD8048’s low distortion and cap load drive
make the AD8047/AD8048 ideal for buffering high speed
ADCs. They are suitable for 12 bit/10 MSPS or 8 bit/60 MSPS
ADCs. Additionally, the balanced high impedance inputs of the
voltage feedback architecture allow maximum flexibility when
designing active filters.
The AD8047 and AD8048 are offered in industrial (–40°C to
+85°C) temperature ranges and are available in 8-pin plastic
DIP and SOIC packages.
The AD8047 and AD8048 are very high speed and wide band-
width amplifiers. The AD8047 is unity gain stable. The
AD8048 is stable at gains of two or greater. The AD8047 and
AD8048, which utilize a voltage feedback architecture, meet the
requirements of many applications that previously depended on
current feedback amplifiers.
A proprietary circuit has produced an amplifier that combines
many of the best characteristics of both current feedback and
voltage feedback amplifiers. For the power (6.6 mA max) the
AD8047 and AD8048 exhibit fast and accurate pulse response
(30 ns to 0.01%) as well as extremely wide small signal and
large signal bandwidth and low distortion. The AD8047
achieves –54 dBc distortion at 20 MHz and 250 MHz small sig-
nal and 130 MHz large signal bandwidths.
1V
5ns
Figure 1. AD8047 Large Signal Transient Response,
V
O
= 4 V p-p, G = +1
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
© Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood. MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703