Datasheet AD600, AD602 (Analog Devices) - 2

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AD600/AD602 TABLE OF CONTENTS
Features .. 1  Applications Information .. 15  Applications ... 1  Time-Gain Control (TGC) and Time-Variable General Description ... 1  Gain (TVG) ... 15  Functional Block Diagram .. 1  Increasing Output Drive .. 15  Revision History ... 2  Driving Capacitive Loads .. 15  Specifications ... 3  Realizing Other Gain Ranges ... 16  Absolute Maximum Ratings .. 5  Ultralow Noise VCA .. 16  ESD Caution .. 5  Low Noise, 6 dB Preamplifier ... 16  Pin Configuration and Function Descriptions ... 6  Low Noise AGC Amplifier with 80 dB Gain Range .. 17  Typical Performance Characteristics ... 7  Wide Range, RMS-Linear dB Measurement System (2 MHz AGC Amplifier with RMS Detector) .. 19  Theory of Operation .. 10  100 dB to 120 dB RMS Responding Constant Bandwidth Noise Performance ... 10  AGC Systems with High Accuracy Decibel Outputs .. 21  Gain-Control Interface .. 11  100 dB RMS/AGC System with Minimal Gain Error Signal-Gating Inputs .. 11  (Parallel Gain with Offset) .. 22  Common-Mode Rejection .. 11  120 dB RMS/AGC System with Optimal SNR Achieving 80 dB Gain Range .. 11  (Sequential Gain) ... 23  Sequential Mode (Maximum SNR) ... 12  Outline Dimensions ... 27  Parallel Mode (Simplest Gain-Control Interface) .. 13  Ordering Guide .. 29  Low Ripple Mode (Minimum Gain Error) ... 13 
REVISION HISTORY 10/08—Rev. E to Rev. F 5/02—Rev. B to Rev. C
Changes to Power Supply Parameter, Table 1 ... 3 Changes to Specifications ... 2 Changes to Figure 41 .. 20 Renumber Tables and TPCs ... Global Changes to Figure 45 .. 21
8/01—Rev. A to Rev. B
Changes to Figure 47 .. 22 Changes to Accuracy Section of AD600A/AD602A column .. 2 Changes to Figure 51 .. 24 Updated Outline Dimensions ... 27 Changes to Ordering Guide .. 29
1/06—Rev. D to Rev. E
Updated Format .. Universal Changes to Table 2 .. 5 Changes to The Gain-Control Interface Section .. 11 Updated Outline Dimensions ... 27 Changes to Ordering Guide .. 28
3/04—Rev. C to Rev. D
Changes to Specifications .. 2 Changes to Ordering Guide .. 3 Changes to Figure 3 .. 8 Changes to Figure 29 .. 18 Updated Outline Dimensions ... 20 Rev. F | Page 2 of 32 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION NOISE PERFORMANCE GAIN-CONTROL INTERFACE SIGNAL-GATING INPUTS COMMON-MODE REJECTION ACHIEVING 80 dB GAIN RANGE SEQUENTIAL MODE (MAXIMUM SNR) PARALLEL MODE (SIMPLEST GAIN-CONTROL INTERFACE) LOW RIPPLE MODE (MINIMUM GAIN ERROR) APPLICATIONS INFORMATION TIME-GAIN CONTROL (TGC) AND TIME-VARIABLE GAIN (TVG) INCREASING OUTPUT DRIVE DRIVING CAPACITIVE LOADS REALIZING OTHER GAIN RANGES ULTRALOW NOISE VCA LOW NOISE, 6 dB PREAMPLIFIER LOW NOISE AGC AMPLIFIER WITH 80 dB GAIN RANGE WIDE RANGE, RMS-LINEAR dB MEASUREMENT SYSTEM (2 MHz AGC AMPLIFIER WITH RMS DETECTOR) 100 dB TO 120 dB RMS RESPONDING CONSTANT BANDWIDTH AGC SYSTEMS WITH HIGH ACCURACY DECIBEL OUTPUTS 100 dB RMS/AGC SYSTEM WITH MINIMAL GAIN ERROR (PARALLEL GAIN WITH OFFSET) 120 dB RMS/AGC SYSTEM WITH OPTIMAL SNR (SEQUENTIAL GAIN) OUTLINE DIMENSIONS ORDERING GUIDE