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CS5460A データシート(PDF) 2 Page - Cirrus Logic |
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CS5460A データシート(HTML) 2 Page - Cirrus Logic |
2 / 54 page CS5460A 2 DS487F4 TABLE OF CONTENTS 1. CHARACTERISTICS AND SPECIFICATIONS ........................................................................ 5 ANALOG CHARACTERISTICS ................................................................................................ 5 VREFOUT REFERENCE OUTPUT VOLTAGE........................................................................ 7 5V DIGITAL CHARACTERISTICS............................................................................................ 7 3.3 V DIGITAL CHARACTERISTICS........................................................................................ 8 ABSOLUTE MAXIMUM RATINGS ........................................................................................... 8 SWITCHING CHARACTERISTICS .......................................................................................... 9 2. OVERVIEW ............................................................................................................................. 12 2.1 Theory of Operation ......................................................................................................... 12 2.1.1 DS Modulators ................................................................................................... 12 2.1.2 High-Rate Digital Low-Pass Filters ..................................................................... 12 2.1.3 Digital Compensation Filters ............................................................................... 12 2.1.4 Digital High-Pass Filters ...................................................................................... 12 2.1.5 Overall Filter Response ....................................................................................... 13 2.1.6 Gain and DC Offset Adjustment .......................................................................... 13 2.1.7 Real Energy and RMS Computations ................................................................. 13 2.2 Performing Measurements ............................................................................................... 13 2.2.1 CS5460A Linearity Performance ......................................................................... 15 2.2.2 Single Computation Cycle (C=0) ......................................................................... 15 2.2.3 Continuous Computation Cycles (C=1) ............................................................... 16 2.3 Basic Application Circuit Configurations .......................................................................... 16 3. FUNCTIONAL DESCRIPTION ............................................................................................... 21 3.1 Pulse-Rate Output ........................................................................................................... 21 3.2 Pulse Output for Normal Format, Stepper Motor Format and Mechanical Counter Format .............................................. 22 3.2.1 Normal Format .................................................................................................... 22 3.2.2 Mechanical Counter Format ................................................................................ 23 3.2.3 Stepper Motor Format ......................................................................................... 23 3.3 Auto-Boot Mode Using EEPROM .................................................................................... 24 3.3.1 Auto-Boot Configuration ...................................................................................... 24 3.3.2 Auto-Boot Data for EEPROM .............................................................................. 25 3.3.3 Application Note AN225 ...................................................................................... 26 3.4 Interrupt and Watchdog Timer ......................................................................................... 26 3.4.1 Interrupt ............................................................................................................... 26 3.4.1.1 Clearing the Status Register ............................................................... 26 3.4.1.2 Typical use of the INT pin ................................................................... 26 3.4.1.3 INT Active State .................................................................................. 26 3.4.1.4 Exceptions ........................................................................................... 26 3.4.2 Watch Dog Timer ................................................................................................ 26 3.5 Oscillator Characteristics .................................................................................................27 3.6 Analog Inputs ................................................................................................................... 27 3.7 Voltage Reference ........................................................................................................... 27 3.8 Calibration ........................................................................................................................ 27 3.8.1 Overview of Calibration Process ......................................................................... 27 3.8.2 The Calibration Registers .................................................................................... 28 3.8.3 Calibration Sequence .......................................................................................... 28 3.8.4 Calibration Signal Input Level ............................................................................. 29 3.8.5 Calibration Signal Frequency .............................................................................. 29 3.8.6 Input Configurations for Calibrations ................................................................... 29 3.8.7 Description of Calibration Algorithms .................................................................. 30 3.8.7.1 AC Offset Calibration Sequence ......................................................... 30 3.8.7.2 DC Offset Calibration Sequence ......................................................... 31 |
同様の部品番号 - CS5460A_07 |
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同様の説明 - CS5460A_07 |
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