AD8351ACPZ-R7

Low Distortion Differential RF/IF Amplifier AD8351 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM −3 dB bandwidth of 2.2 GHz for AV = 12 dB Single resistor programmable gain: 0 dB ≤ AV ≤ 26 dB Differential interface Low noise input stage 2.7 nV/√Hz at AV = 10 dB Low harmonic distortion −79 dBc second at 70 MHz −81 dBc third at 70 MHz OIP3 of 31 dBm at 70 MHz Single-supply operation: 3 V to 5.5 V Low power dissipation: 28 mA at 5 V Adjustable output common-mode voltage Fast settling and overdrive recovery Slew rate of 13,000 V/μs Power-down capability AD8351 PWUP VPOS RGP1 INHI OPHI INLO OPLO COMM RGP2 0 AD8351 WITH 10dB OF DRIVING THE –10 GAIN AD6645 (R = 1kΩ) –20 –30 –40 –50 APPLICATIONS VOCM BIAS CELL L ANALOG INPUT = 70MHz ENCORE = 80MHz SNR = 69.1dB FUND = –1.1dBFS HD2 = –78.5dBc HD3 = –80.7dBc THD = –75.9dBc SFDR = 78.2dBc 100nF 25Ω INHI RG 200Ω AD6645 14-BIT ADC AD8351 INLO 100nF 25Ω –60 Differential ADC drivers Single-ended-to-differential conversion IF sampling receivers RF/IF gain blocks SAW filter interfacing –70 2 –80 –90 3 + –100 03145-001 –110 –120 –130 Figure 1. GENERAL DESCRIPTION The AD8351 is a low cost differential amplifier useful in RF and IF applications up to 2.2 GHz. The voltage gain can be set from unity to 26 dB using a single external gain resistor. The AD8351 provides a nominal 150 Ω differential output impedance. The excellent distortion performance and low noise characteristics of this device allow for a wide range of applications. The AD8351 is designed to satisfy the demanding performance requirements of communications transceiver applications. The device can be used as a general-purpose gain block, an ADC driver, and a high speed data interface driver, among other functions. The AD8351 can also be used as a single-ended-todifferential amplifier with similar distortion products as in the Rev. D differential configuration. The exceptionally good distortion performance makes the AD8351 an ideal solution for 12-bit and 14-bit IF sampling receiver designs. Fabricated in Analog Devices, Inc., high speed XFCB process, the AD8351 has high bandwidth that provides high frequency performance and low distortion. The quiescent current of the AD8351 is 28 mA typically. The AD8351 amplifier comes in a compact 10-lead MSOP package or in a 16-lead LFCSP package, and operates over the temperature range of −40°C to +85°C. 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 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 ©2003–2015 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD8351 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Gain Adjustment ........................................................................ 12 Applications ....................................................................................... 1 Common-Mode Adjustment .................................................... 12 Functional Block Diagram .............................................................. 1 Input and Output Matching ...................................................... 12 General Description ......................................................................... 1 Single-Ended-to-Differential Operation ................................. 13 Revision History ............................................................................... 2 ADC Driving............................................................................... 13 Specifications..................................................................................... 3 Analog Multiplexing .................................................................. 14 Absolute Maximum Ratings............................................................ 5 I/O Capacitive Loading ............................................................. 14 ESD Caution .................................................................................. 5 Transmission Line Effects ......................................................... 15 Pin Configurations and Function Descriptions ........................... 6 Characterization Setup .............................................................. 16 Typical Performance Characteristics ............................................. 7 Evaluation Board ............................................................................ 17 Theory of Operation ...................................................................... 12 Outline Dimensions ....................................................................... 19 Basic Concepts ............................................................................ 12 Ordering Guide............................................................................... 19 REVISION HISTORY 1/15—Rev. C to Rev. D Changes to Noise Distortion Parameter, Table 1 .......................... 3 Changes to Ordering Guide .......................................................... 19 3/14—Rev. B to Rev. C Updated Format .................................................................. Universal Added 16-Lead LFCSP Package................................... Throughout Changes to Features.......................................................................... 1 Changes to Table 3 and Added Figure 3; Renumbered Sequentially ....................................................................................... 6 Updated Outline Dimensions; Added Figure 52 ........................ 19 Moved, Changes to Ordering Guide ............................................ 19 2/04—Rev. A to Rev. B Changes to Ordering Guide ............................................................ 4 Changes to TPC 4 ............................................................................. 5 3/03—Rev. 0 to Rev. A Changes to Ordering Guide ............................................................ 4 Change to Table 3 ........................................................................... 15 3/03—Revision 0: Initial Version Rev. D | Page 2 of 19 Data Sheet AD8351 SPECIFICATIONS VS = 5 V, RL = 150 Ω, RG = 110 Ω (AV = 10 dB), f = 70 MHz, T = 25°C, parameters specified differentially, unless otherwise noted. Table 1. Parameter DYNAMIC PERFORMANCE −3 dB Bandwidth Bandwidth for 0.1 dB Flatness Bandwidth for 0.2 dB Flatness Gain Accuracy Gain Supply Sensitivity Gain Temperature Sensitivity Slew Rate Settling Time Overdrive Recovery Time Reverse Isolation (S12) INPUT/OUTPUT CHARACTERISTICS Input Common-Mode Voltage Adjustment Range Max Output Voltage Swing Output Common-Mode Offset Output Common-Mode Drift Output Differential Offset Voltage Output Differential Offset Drift Input Bias Current Input Resistance1 Input Capacitance1 CMRR Output Resistance1 Output Capacitance1 POWER INTERFACE Supply Voltage PWUP Threshold PWUP Input Bias Current Quiescent Current NOISE/DISTORTION 10 MHz Second/Third Harmonic Distortion2 Third-Order IMD Output Third-Order Intercept Noise Spectral Density (RTI) 1 dB Compression Point Test Conditions/Comments Min GAIN = 6 dB, VOUT ≤ 1.0 V p-p GAIN = 12 dB, VOUT ≤ 1.0 V p-p GAIN = 18 dB, VOUT ≤ 1.0 V p-p 0 dB ≤ GAIN ≤ 20 dB, VOUT ≤ 1.0 V p-p 0 dB ≤ GAIN ≤ 20 dB, VOUT ≤ 1.0 V p-p Using 1% resistor for RG, 0 dB ≤ AV ≤ 20 dB VS ± 5% −40°C to +85°C RL = 1 kΩ, VOUT = 2 V step RL = 150 Ω, VS = 2 V step 1 V step to 1% VIN = 4 V to 0 V step, VOUT ≤ ±10 mV 1 dB compressed −40°C to +85°C −40°C to +85°C Typ RL = 1 kΩ, VOUT = 2 V p-p RL = 150 Ω, VOUT = 2 V p-p RL = 1 kΩ, f1 = 9.5 MHz, f2 = 10.5 MHz, VOUT = 2 V p-p composite RL = 150 Ω, f1 = 9.5 MHz, f2 = 10.5 MHz, VOUT = 2 V p-p composite f1 = 9.5 MHz, f2 = 10.5 MHz Rev. D | Page 3 of 19 Unit 3,000 2,200 600 200 400 ±1 0.08 3.9 13,000 7,500