AD600 데이터 시트보기 (PDF) - Analog Devices

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AD600

Dual, Low Noise, Wideband Variable Gain Amplifiers

Analog Devices 

AD600/AD602

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 5

ESD Caution.................................................................................. 5

Pin Configuration and Function Descriptions............................. 6

Typical Performance Characteristics ............................................. 7

Theory of Operation ...................................................................... 10

Noise Performance ..................................................................... 10

Gain-Control Interface .............................................................. 11

Signal-Gating Inputs .................................................................. 11

Common-Mode Rejection ........................................................ 11

Achieving 80 dB Gain Range .................................................... 11

Sequential Mode (Maximum SNR) ......................................... 12

Parallel Mode (Simplest Gain-Control Interface).................. 13

Low Ripple Mode (Minimum Gain Error) ............................. 13

Applications Information .............................................................. 15

Time-Gain Control (TGC) and Time-Variable

Gain (TVG) ................................................................................. 15

Increasing Output Drive............................................................ 15

Driving Capacitive Loads .......................................................... 15

Realizing Other Gain Ranges ................................................... 16

Ultralow Noise VCA .................................................................. 16

Low Noise, 6 dB Preamplifier ................................................... 16

Low Noise AGC Amplifier with 80 dB Gain Range .............. 17

Wide Range, RMS-Linear dB Measurement System

(2 MHz AGC Amplifier with RMS Detector) ........................ 19

100 dB to 120 dB RMS Responding Constant Bandwidth

AGC Systems with High Accuracy Decibel Outputs ............ 21

100 dB RMS/AGC System with Minimal Gain Error

(Parallel Gain with Offset) ........................................................ 22

120 dB RMS/AGC System with Optimal SNR

(Sequential Gain) ....................................................................... 23

Outline Dimensions ....................................................................... 27

Ordering Guide .......................................................................... 29

REVISION HISTORY

10/08—Rev. E to Rev. F

Changes to Power Supply Parameter, Table 1 ............................... 3

Changes to Figure 41...................................................................... 20

Changes to Figure 45...................................................................... 21

Changes to Figure 47...................................................................... 22

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

5/02—Rev. B to Rev. C

Changes to Specifications.................................................................2

Renumber Tables and TPCs...................................................Global

8/01—Rev. A to Rev. B

Changes to Accuracy Section of AD600A/AD602A column......2

Rev. F | Page 2 of 32

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