AD8047 Analog Devices, AD8047 Datasheet

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AD8047

Manufacturer Part Number
AD8047
Description
250 MHz, General Purpose Voltage Feedback Op Amps Gain 1 Stable
Manufacturer
Analog Devices
Datasheet

Specifications of AD8047

Vcc-vee
6V to 12V
Isy Per Amplifier
6.6mA
Packages
DIP,SOIC
-3db Bandwidth
250MHz
Slew Rate
750V/µs
Vos
1mV
Ib
1µA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
5.2nV/rtHz

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD8047AR
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD8047ARZ
Manufacturer:
ROHM
Quantity:
6 232
Part Number:
AD8047ARZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
PRODUCT DESCRIPTION
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 require-
ments 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, 250 MHz small signal, and
130 MHz large signal bandwidths.
REV. A
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. 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 companies.
FEATURES
Wide Bandwidth
5.8 mA Typical Supply Current
Low Distortion, (SFDR) Low Noise
Drives 50 pF Capacitive Load
High Speed
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
3 V to
Small Signal
Large Signal (2 V p-p) 130 MHz
–66 dBc Typ @ 5 MHz
–54 dBc Typ @ 20 MHz
5.2 nV/ Hz (AD8047), 3.8 nV/ Hz (AD8048) Noise
Slew Rate 750 V/ s (AD8047), 1000 V/ s (AD8048)
Settling 30 ns to 0.01%, 2 V Step
6 V Supply Operation
AD8047, G = +1
250 MHz
AD8048, G = +2
260 MHz
160 MHz
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-lead PDIP
and SOIC packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
Figure 1. AD8047 Large Signal Transient Response,
V
O
= 4 V p-p, G = +1
Voltage Feedback Op Amps
250 MHz, General Purpose
FUNCTIONAL BLOCK DIAGRAM
+INPUT
–INPUT
–V
NC
S
and SOIC (R) Packages
8-Pin Plastic PDIP (N)
© 2003 Analog Devices, Inc. All rights reserved.
1V
1
2
3
4
NC = NO CONNECT
(TOP VIEW)
AD8047/
AD8048
AD8047/AD8048
8
7
6
5
5ns
NC
+V
OUTPUT
NC
S
www.analog.com

Related parts for AD8047

AD8047 Summary of contents

Page 1

... 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 require- ments of many applications that previously depended on current feedback amplifiers ...

Page 2

... Power Supply Rejection Ratio NOTES 1 See Absolute Maximum Ratings and Theory of Operation sections. 2 Measured 50 Measured with respect to the inverting input. Specifications subject to change without notice 100 , (AD8047 LOAD V Conditions V 0.4 V p-p OUT p-p OUT V = 300 mV p-p OUT AD8047 ...

Page 3

... Supply Voltage, (+V ) – (– 12 Voltage Swing Bandwidth Product AD8047 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 V-MHz AD8048 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 V-MHz 2 Internal Power Dissipation Plastic Package ( 1.3 W Small Outline Package ( 0.9 W Input Voltage (Common Mode Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ...

Page 4

... GENERATOR 500ps AD8047 0 49 –V S TPC 1. AD8047 Noninverting Configuration TPC 2. AD8047 Large Signal Transient Response p- 100mV TPC 3. AD8047 Small Signal Transient Response 400 mV p- GENERATOR OUT R = 100 L TPC 4. AD8047 Inverting Configuration –1 5ns TPC 5. AD8047 Large Signal Transient Response ...

Page 5

... L TPC 10. AD8048 Inverting Configuration, G= –1 5ns TPC 11. AD8048 Large Signal Transient Response p- – 5ns TPC 12. AD8048 Small Signal Transient Response; = 200 V = 400 mV p- – –5– AD8047/AD8048 R F PULSE 500ps 0 AD8048 ...

Page 6

... FOR DIP 66.5 FOR SOIC –0 300mV p-p OUT –0.3 –0.4 –0.5 –0.6 –0.7 –0.8 –0.9 1M 10M FREQUENCY (Hz) TPC 14. AD8047 0.1 dB Flatness GAIN 100 L –10 –20 –30 1k 10k 100k 1M 10M FREQUENCY (Hz) TPC 15. AD8047 Open-Loop Gain and Phase Margin vs ...

Page 7

... TPC 21. AD8047 Differential Gain and Phase Error + 150 , R = 200 , REV. A THIRD HARMONIC 10M 100M TPC 22. AD8047 Short-Term Settling Time 5.5 6.5 TPC 23. AD8047 Long-Term Settling Time 8th 9th 10th 11th 8th 9th 10th 11th = 200 IN –7– AD8047/AD8048 0 100 ...

Page 8

... AD8047/AD8048 100 200 300mV p-p 4 OUT –1 –2 –3 1M 10M FREQUENCY (Hz) TPC 25. AD8048 Small Signal Frequency Response 6.5 6 100 200 6 300mV p-p OUT 6.2 6.1 6.0 5.9 5.8 5.7 5.6 5.5 1M 10M FREQUENCY (Hz) TPC 26. AD8048 0.1 dB Flatness 100 L 20 ...

Page 9

... TPC 35. AD8048 Long-Term Settling Time 2 V Step 8th 9th 10th 11th 8th 9th 10th 11th = 200 IN –9– AD8047/AD8048 R = 100 200 STEP OUT SETTLING TIME (ns 100 200 ...

Page 10

... FREQUENCY (Hz) TPC 37. AD8047 CMRR vs. Frequency 100 10 1 0.1 0.01 10k 100k 1M 10M FREQUENCY (Hz) TPC 38. AD8047 Output Resistance vs. Frequency +PSRR 70 – PSRR 10k 100k 1M 10M FREQUENCY (Hz) TPC 39. AD8047 PSRR vs. Frequency 100 ...

Page 11

... OUT 3.1 –V OUT 2.9 2.7 +V OUT 2.5 –V OUT 2.3 –60 –40 – JUNCTION TEMPERATURE ( C) TPC 43. AD8047/AD8048 Output Swing vs. Temperature 2600 2400 AD8048 2200 2000 1800 1600 1400 AD8047 1200 1000 –60 –40 – JUNCTION TEMPERATURE ( C) TPC 44. AD8047/AD8048 Open-Loop Gain vs. Temperature 94 92 ...

Page 12

... TERM 10 F – Figure 4. Inverting Operation When the AD8047 is used in the transimpedance ( mode, such as in photodiode detection, the values of R capacitance (C ) are usually known. Generally, the value selected will be in the k range, and a shunt capacitor (C across R will be required to maintain good amplifier stability. ...

Page 13

... The wide bandwidth and low distortion of the AD8047 and AD8048 are ideal for the realization of higher bandwidth active filters. These characteristics, while being more common in many R SERIES current feedback op amps, are offered in the AD8047 and AD8048 in a voltage feedback configuration. Many active filter configu ...

Page 14

... ANALOG IN 0 –5V ANALOG Figure 12. AD8047 Used as Driver for an AD872A, a 12-Bit, 10 MSPS A/D Converter Layout Considerations The specified high speed performance of the AD8047 and AD8048 requires careful attention to board layout and compo- nent selection. Proper RF design techniques and low-pass – parasitic component selection are mandatory ...

Page 15

... SEATING 0.10 0.17 (0.0067) PLANE COMPLIANT TO JEDEC STANDARDS MS-012AA CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN –15– AD8047/AD8048 0.150 (3.81) 0.135 (3.43) 0.120 (3.05) 0.015 (0.38) 0.010 (0.25) 0.008 (0.20) 0.50 (0.0196) 45 0.25 (0.0099 ...

Page 16

... AD8047/AD8048 Revision History Location 7/03—Data Sheet changed from REV REV. A. Renumbered Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Deleted Evaluation Board Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Updated ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 –16– Page REV. A ...

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