AD9632 Analog Devices, AD9632 Datasheet

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AD9632

Manufacturer Part Number
AD9632
Description
Ultralow Distortion, High Speed Op Amp, Stable at Gain of 2
Manufacturer
Analog Devices
Datasheet

Specifications of AD9632

-3db Bandwidth
250MHz
Slew Rate
1.5kV/µs
Vos
2mV
Ib
2µA
# Opamps Per Pkg
1
Input Noise (nv/rthz)
4.3nV/rtHz
Vcc-vee
6V to 12V
Isy Per Amplifier
17mA
Packages
DIP,SOIC

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a
GENERAL DESCRIPTION
The AD9631 and AD9632 are very high speed and wide band-
width amplifiers. They are an improved performance alternative
to the AD9621 and AD9622. The AD9631 is unity gain stable.
The AD9632 is stable at gains of 2 or greater. Using a voltage
feedback architecture, the AD9631/AD9632’s exceptional settling
time, bandwidth, and low distortion meet the requirements of
many applications that previously depended on current feedback
amplifiers. Its classical op amp structure works much more
predictably in many designs.
REV. C
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
Ultralow Distortion (SFDR), Low Noise
High Speed
APPLICATIONS
ADC Input Driver
Differential Amplifiers
IF/RF Amplifiers
Pulse Amplifiers
Professional Video
DAC Current to Voltage
Baseband and Video Communications
Pin Diode Receivers
Active Filters/Integrators/Log Amps
AD9631, G = +1
AD9632, G = +2
Small Signal
Large Signal (4 V p-p)
–113 dBc Typ @ 1 MHz
–95 dBc Typ @ 5 MHz
–72 dBc Typ @ 20 MHz
46 dBm Third Order Intercept @ 25 MHz
7.0 nV/
Slew Rate 1300 V/ s
Settling 16 ns to 0.01%, 2 V Step
17 mA Supply Current
3 V to
320 MHz
250 MHz
175 MHz
180 MHz
÷
Hz Spectral Noise Density
5 V Supply Operation
Ultralow Distortion, Wide Bandwidth
A proprietary design architecture has produced an amplifier
that combines many of the best characteristics of both current
feedback and voltage feedback amplifiers. The AD9631 and
AD9632 exhibit exceptionally fast and accurate pulse response
(16 ns to 0.01%) as well as extremely wide small signal and large
signal bandwidth and ultralow distortion. The AD9631 achieves
–72 dBc at 20 MHz, and 320 MHz small signal and 175 MHz
large signal bandwidths.
These characteristics position the AD9631/AD9632 ideally for
driving flash as well as high resolution ADCs. Additionally, the
balanced high impedance inputs of the voltage feedback archi-
tecture allow maximum flexibility when designing active filters.
The AD9631/AD9632 are offered in the industrial (–40 C to
+85 C) temperature range. They are available in PDIP and SOIC.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
–110
–130
–30
–50
–70
–90
Voltage Feedback Op Amps
Figure 1. AD9631 Harmonic Distortion vs.
Frequency, G = +1
10k
V
R
V
S
L
O
=
= 500
= 2V p-p
+INPUT
–INPUT
5V
PIN CONFIGURATION
and SOIC (R) Packages
© 2003 Analog Devices, Inc. All rights reserved.
–V
100k
NC
S
8-Lead PDIP (N)
1
2
3
4
NC = NO CONNECT
SECOND HARMONIC
AD9631/AD9632
FREQUENCY – Hz
TOP VIEW
AD9631/
AD9632
1M
THIRD HARMONIC
8
7
6
5
NC
+V
OUTPUT
NC
S
10M
www.analog.com
100M

Related parts for AD9632

AD9632 Summary of contents

Page 1

... The AD9631 and AD9632 are very high speed and wide band- width amplifiers. They are an improved performance alternative to the AD9621 and AD9622. The AD9631 is unity gain stable. The AD9632 is stable at gains greater. Using a voltage feedback architecture, the AD9631/AD9632’s exceptional settling time, bandwidth, and low distortion meet the requirements of many applications that previously depended on current feedback amplifiers ...

Page 2

... V 46 OUT T –T 40 MIN MAX ± 3.2 ± 3.9 ± 3.0 ± 5.0 ± 6.0 T –T MIN MAX T –T 50 MIN MAX –2– (AD9632), unless otherwise noted.) V AD9632A Max Min Typ Max Unit 320 180 250 MHz 175 155 180 MHz 130 130 MHz 1200 1500 V/ms 1.2 1 ...

Page 3

... ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD9631/AD9632 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality ...

Page 4

... AD9631/AD9632–Typical Performance Characteristics 0.1 F PULSE GENERATOR AD9631 350ps R F 130 –V S TPC 1. AD9631 Noninverting Configuration TPC 2. AD9631 Large Signal Transient Response; = 250 p- + 100mV TPC 3. AD9631 Small Signal Transient Response; ...

Page 5

... GENERATOR 0 350ps AD9632 130 –V S TPC 7. AD9632 Noninverting Configuration TPC 8. AD9632 Large Signal Transient Response; = 422 p- + 100mV TPC 9. AD9632 Small Signal Transient Response 400 REV. C GENERATOR T ...

Page 6

... AD9631/AD9632 – 100 L – 300mV p –3 –4 –5 –6 –7 –8 –9 10M 1M FREQUENCY – Hz TPC 13. AD9631 Small Signal Frequency Response 0 –0 100 L –0 300mV p –0.3 100 –0.4 –0.5 –0.6 –0.7 –0.8 – ...

Page 7

... HARMONIC –0.05 –0.10 10M 100M TPC 22. AD9631 Differential Gain and Phase Error +2, R –0.1 THIRD HARMONIC –0.2 –0.3 10M 100M –0.1 –0 100 –7– AD9631/AD9632 0.10 0.05 0.00 1ST 2ND 3RD 4TH 5TH 6TH 7TH 8TH 9TH 0.10 0.05 0.00 1ST 2ND 3RD 4TH ...

Page 8

... FREQUENCY – Hz TPC 27. AD9632 Open-Loop Gain and Phase = 100 W Margin vs. Frequency 350 325 R F 425 R 300 F 225 250 200 150 100M 1G TPC 28. AD9632 Small Signal –3 dB Bandwidth vs 325 375 425 1 0 –1 – ...

Page 9

... W Frequency FREQUENCY – MHz TPC 33. AD9632 Third Order Intercept vs. Frequency REV. C –0.02 –0.04 THIRD HARMONIC –0.02 –0.04 10M 100M TPC 34. AD9632 Differential Gain and Phase Error G = +2, R –0.1 THIRD HARMONIC –0.2 –0.3 10M 100M – ...

Page 10

... TPC 41. AD9632 PSRR vs. Frequency 100 100 100M 1G 100k TPC 42. AD9632 CMRR vs. Frequency –10– 100 1k 10k FREQUENCY – Hz –PSRR +PSRR 100k 1M 100M 10M FREQUENCY – 100 ...

Page 11

... OUT 4.0 –V OUT 3.9 3.8 3.7 3.6 +V OUT 3.5 –V OUT 3.4 3.3 –60 –40 – JUNCTION TEMPERATURE – C TPC 45. AD9631/AD9632 Output Swing vs. Temperature REV. C 1350 1250 1150 1050 950 850 750 650 550 450 350 10M 100M –60 TPC 46. Open-Loop Gain vs. Temperature ...

Page 12

... TPC 54. AD9632 Input Offset Voltage Distribution –12– AD9631 AD9632 SOURCE –40 – 100 JUNCTION TEMPERATURE – –I B AD9632 AD9631 – –40 –20 ...

Page 13

... Increasing their closed-loop gain results in a corresponding decrease in small signal bandwidth. This can be observed by noting the bandwidth specification between the AD9631 (gain of +1) and AD9632 (gain of +2). The AD9631/ AD9632 typically maintain 65 degrees of phase margin. This high margin minimizes the effects of signal and noise peaking. ...

Page 14

... DAC I/V conversion. The same characteristics along with low harmonic distortion make them a good choice for ADC buffering/amplification. With superb linearity at relatively high signal frequencies, the AD9631 and AD9632 are ideal drivers for ADCs bits. Operation as a Video Line Driver versus capacitive SERIES The AD9631 and AD9632 have been designed to offer outstand- ing performance as video line drivers ...

Page 15

... Active Filters The wide bandwidth and low distortion of the AD9631 and AD9632 are ideal for the realization of higher bandwidth active filters. These characteristics, while being more common in many current feedback op amps, are offered in the AD9631 and AD9632 in a voltage feedback configuration. Many active filter configurations are not realizable with current feedback amplifiers ...

Page 16

... AD9631/AD9632 Layout Considerations The specified high speed performance of the AD9631 and AD9632 requires careful attention to board layout and component selection. Proper RF design techniques and low-pass parasitic component selection are mandatory. The PCB should have a ground plane covering all unused portions of the component side of the board to provide a low impedance path ...

Page 17

... 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 –17– AD9631/AD9632 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 18

... AD9631/AD9632 Revision History Location 7/03—Data Sheet changed from REV REV. C. Deleted Evaluation Boards information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Deleted military CERDIP version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Change to ABSOLUTE MAXIMUM RATINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Change to TPC Change to TPC Change to Figure Updated OUTLINE DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 1/03—Data Sheet changed from REV REV. B. ...

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