Datasheet AD9631, AD9632 (Analog Devices)

Ultralow Distortion, Wide Bandwidth Voltage Feedback Op Amps Data Sheet AD9631/ AD9632 FEATURES PIN CONFIGURATION Wide bandwidth AD9631/ AD9631, G = +1 NC 1 8 NC AD9632 AD9632, G = +2 –INPUT 2 7 +VS Small signal +INPUT 3 6 OUTPUT AD9631, 3 20 MHz –V 4 S TOP VIEW 5 NC (Not to Scale) AD9632, 2 50 MHz
001
NOTES Large signal (4 V p-p) 1. NC = NO CONNECT.
00601-
AD9631, 1 75 MHz
Figure 1. 8-Lead PDIP (N) and SOIC (R) Packages
AD9632, 1 80 MHz
A proprietary design architecture has produced an amplifier
Ultralow distortion (SFDR), low noise
that combines many of the best characteristics of both current
−113 dBc typical @ 1 MHz
feedback and voltage feedback amplifiers. The AD9631/AD9632
−95 dBc typical @ 5 MHz
exhibit exceptionally fast and accurate pulse response (16 ns to
−72 dBc typical @ 20 MHz
0.01%) as well as extremely wide small signal and large signal
46 dBm third-order intercept @ 25 MHz
bandwidth and ultralow distortion. The AD9631 achieves
7.0 nV/√Hz spectral noise density
−72 dBc at 20 MHz, 320 MHz small signal bandwidth, and
High speed
175 MHz large signal bandwidths.
Slew rate: 1300 V/μs Settling time to 0.01%, 2 V step: 16 ns
These characteristics position the AD9631/AD9632 ideally for
±3 V to ±5 V supply operation
driving flash as well as high resolution ADCs. Additionally, the
17 mA supply current
balanced high impedance inputs of the voltage feedback archi- tecture allow maximum flexibility when designing active filters.
APPLICATIONS
The AD9631/AD9632 are offered in the industrial (−40°C to
ADC input driver
+85°C) temperature range. They are available in PDIP and SOIC.
Differential amplifiers –30 IF/RF amplifiers VS = ±5V –40 RL = 500Ω Pulse amplifiers VOUT = 2V p-p Professional video ) –50 Bc d DAC current to voltage ( –60 N Baseband and video communications IO –70 RT Pin diode receivers O T –80 Active filters/integrators/log amps IS D C –90 GENERAL DESCRIPTION NI O SECOND HARMONIC M –100
The AD9631/AD9632 are very high speed and wide bandwidth
HAR –110
amplifiers. The AD9631 is unity gain stable. The AD9632 is
THIRD HARMONIC –120
stable at gains of 2 or greater. Using a voltage feedback
–130
architecture, the exceptional settling time, bandwidth, and low
10k 100k 1M 10M 100M
002 1- distortion of the AD9631/AD9632 meet the requirements of
FREQUENCY (Hz)
0060 many applications that previously depended on current feed- Figure 2. AD9631 Harmonic Distortion vs. Frequency, G = +1 back amplifiers. Its classical op amp structure works much more predictably in many designs.
Rev. D Document Feedback 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2014 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline Features Applications General Description Pin Configuration Table of Contents Revision History Specifications Electrical Characteristics Absolute Maximum Ratings Metallization Photo Thermal Resistance Maximum Power Dissipation ESD Caution Typical Performance Characteristics Theory of Operation General Feedback Resistor Choice Pulse Response Large Signal Performance Power Supply Bypassing Driving Capacitive Loads Applications Information Operation as a Video Line Driver Active Filters Analog-to-Digital Converter (ADC) Driver Layout Considerations Outline Dimensions Ordering Guide