Datasheet AD7946 (Analog Devices) - 3
| Manufacturer | Analog Devices |
| Description | 14-Bit, 500 kSPS PulSAR ADC in MSOP |
| Pages / Page | 25 / 3 — AD7946. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/14—Rev. A to … |
| Revision | B |
| File Format / Size | PDF / 605 Kb |
| Document Language | English |
AD7946. Data Sheet. TABLE OF CONTENTS. REVISION HISTORY 7/14—Rev. A to Rev. B. 12/07—Rev. 0 to Rev. A
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AD7946 Data Sheet TABLE OF CONTENTS
Features .. 1 Voltage Reference Input .. 14 Applications ... 1 Power Supply ... 15 Typical Application Circuit ... 1 Supplying the ADC from the Reference .. 15 General Description ... 1 Single-Supply Application ... 15 Revision History ... 2 Digital Interface .. 16 Specifications ... 3 CS MODE 3-Wire, No BUSY Indicator .. 17 Timing Specifications .. 5 CS Mode 3-Wire with BUSY Indicator ... 18 Absolute Maximum Ratings .. 6 CS Mode 4-Wire, No BUSY Indicator ... 19 ESD Caution .. 6 CS Mode 4-Wire with BUSY Indicator ... 20 Pin Configurations and Function Descriptions ... 7 Chain Mode, No BUSY Indicator .. 21 Typical Performance Characteristics ... 8 Chain Mode with BUSY Indicator ... 22 Terminology .. 11 Application Guidelines .. 23 Theory of Operation .. 12 Layout .. 23 Circuit Information .. 12 Evaluating the Performance of the AD7946 .. 23 Converter Operation .. 12 Outline Dimensions ... 24 Typical Connection Diagram.. 13 Ordering Guide .. 24 Analog Input ... 13 Driver Amplifier Choice .. 14
REVISION HISTORY 7/14—Rev. A to Rev. B 12/07—Rev. 0 to Rev. A
Replaced QFN with LFCSP .. Throughout QFN Package Available .. Universal Changed Application Diagram Section to Typical Application Changes to Table 1 ... 1 Circuit Section .. 1 Changes to Table 5 ... 6 Changes to Product Title and Features Section .. 1 Changes to Ordering Guide .. 24 Added Note 1, General Description Section ... 1 Added EPAD Notation to Figure 5 and Table 6.. 7
7/05—Revision 0: Initial Version
Changes to Figure 25 .. 13 Changes to Evaluating the Performance of the AD7946 Section . 23 Updated Outline Dimensions ... 24 Changes to Ordering Guide .. 24 Rev. B | Page 2 of 24 Document Outline Features Applications Typical Application Circuit General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Single-Supply Application Digital Interface CS/ MODE 3-Wire, No BUSY Indicator CS/ Mode 3-Wire with BUSY Indicator CS/ Mode 4-Wire, No BUSY Indicator CS/ Mode 4-Wire with BUSY Indicator Chain Mode, No BUSY Indicator Chain Mode with BUSY Indicator Application Guidelines Layout Evaluating the Performance of the AD7946 Outline Dimensions Ordering Guide
AD7946 Data Sheet TABLE OF CONTENTS
Features .. 1 Voltage Reference Input .. 14 Applications ... 1 Power Supply ... 15 Typical Application Circuit ... 1 Supplying the ADC from the Reference .. 15 General Description ... 1 Single-Supply Application ... 15 Revision History ... 2 Digital Interface .. 16 Specifications ... 3 CS MODE 3-Wire, No BUSY Indicator .. 17 Timing Specifications .. 5 CS Mode 3-Wire with BUSY Indicator ... 18 Absolute Maximum Ratings .. 6 CS Mode 4-Wire, No BUSY Indicator ... 19 ESD Caution .. 6 CS Mode 4-Wire with BUSY Indicator ... 20 Pin Configurations and Function Descriptions ... 7 Chain Mode, No BUSY Indicator .. 21 Typical Performance Characteristics ... 8 Chain Mode with BUSY Indicator ... 22 Terminology .. 11 Application Guidelines .. 23 Theory of Operation .. 12 Layout .. 23 Circuit Information .. 12 Evaluating the Performance of the AD7946 .. 23 Converter Operation .. 12 Outline Dimensions ... 24 Typical Connection Diagram.. 13 Ordering Guide .. 24 Analog Input ... 13 Driver Amplifier Choice .. 14
REVISION HISTORY 7/14—Rev. A to Rev. B 12/07—Rev. 0 to Rev. A
Replaced QFN with LFCSP .. Throughout QFN Package Available .. Universal Changed Application Diagram Section to Typical Application Changes to Table 1 ... 1 Circuit Section .. 1 Changes to Table 5 ... 6 Changes to Product Title and Features Section .. 1 Changes to Ordering Guide .. 24 Added Note 1, General Description Section ... 1 Added EPAD Notation to Figure 5 and Table 6.. 7
7/05—Revision 0: Initial Version
Changes to Figure 25 .. 13 Changes to Evaluating the Performance of the AD7946 Section . 23 Updated Outline Dimensions ... 24 Changes to Ordering Guide .. 24 Rev. B | Page 2 of 24 Document Outline Features Applications Typical Application Circuit General Description Table of Contents Revision History Specifications Timing Specifications Absolute Maximum Ratings ESD Caution Pin Configurations and Function Descriptions Typical Performance Characteristics Terminology Theory of Operation Circuit Information Converter Operation Transfer Functions Typical Connection Diagram Analog Input Driver Amplifier Choice Voltage Reference Input Power Supply Supplying the ADC from the Reference Single-Supply Application Digital Interface CS/ MODE 3-Wire, No BUSY Indicator CS/ Mode 3-Wire with BUSY Indicator CS/ Mode 4-Wire, No BUSY Indicator CS/ Mode 4-Wire with BUSY Indicator Chain Mode, No BUSY Indicator Chain Mode with BUSY Indicator Application Guidelines Layout Evaluating the Performance of the AD7946 Outline Dimensions Ordering Guide
