Datasheet AD7822, AD7825, AD7829 (Analog Devices) - 2

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AD7822/AD7825/AD7829 TABLE OF CONTENTS
Features .. 1 Typical Connection Diagram ... 10 Applications... 1 ADC Transfer Function... 11 General Description ... 1 Analog Input ... 11 Functional Block Diagram .. 1 Power-Up Times... 14 Product Highlights ... 1 Power vs. Throughput.. 15 Revision History ... 2 Operating Modes.. 15 Specifications... 3 Parallel Interface... 17 Timing Characteristics .. 5 Microprocessor Interfacing... 18 Timing Diagram ... 5 AD7822/AD7825/AD7829 to 8051 ... 18 Absolute Maximum Ratings.. 6 AD7822/AD7825/AD7829 to PIC16C6x/PIC16C7x.. 18 ESD Caution.. 6 AD7822/AD7825/AD7829 to ADSP-21xx ... 18 Pin Configurations and Function Descriptions ... 7 Interfacing Multiplexer Address Inputs .. 18 Terminology .. 8 AD7822 Standalone Operation .. 19 Circuit Information .. 10 Outline Dimensions ... 20 Circuit Description... 10 Ordering Guide .. 25
REVISION HISTORY 8/06—Rev. B to Rev. C
Changes to Typical Connection Diagram Section..7 Changes to General Description .. 1 Changes to Analog Input Section..8 Changes to Table 1.. 3 Changes to Analog Input Selection Section...9 Changes to Typical Connection Diagram Section ... 10 Changes to Power-Up Times Section .. 10 Updated Outline Dimensions ... 20 Changes to Power vs. Throughput Section ... 11 Changes to Ordering Guide .. 25 Added AD7822 Stand-Alone Operation section ... 15
10/01—Rev. A to Rev. B
12/99
—Rev. 0 to Rev. A
Changes to Power Requirements.. 3 Changes to Pin Function Description ... 5 Changes to Circuit Description .. 7 Rev. C | Page 2 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING CHARACTERISTICS TIMING DIAGRAM ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TERMINOLOGY CIRCUIT INFORMATION CIRCUIT DESCRIPTION TYPICAL CONNECTION DIAGRAM ADC TRANSFER FUNCTION ANALOG INPUT POWER-UP TIMES POWER VS. THROUGHPUT OPERATING MODES PARALLEL INTERFACE MICROPROCESSOR INTERFACING AD7822/AD7825/AD7829 TO 8051 AD7822/AD7825/AD7829 TO PIC16C6x/PIC16C7x AD7822/AD7825/AD7829 TO ADSP-21xx INTERFACING MULTIPLEXER ADDRESS INPUTS AD7822 STANDALONE OPERATION OUTLINE DIMENSIONS ORDERING GUIDE