Datasheet AD7942 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 14-Bit, 250 kSPS PulSAR , Pseudo Differential ADC in MSOP/LFCSP |
| Pages / Page | 25 / 5 — AD7942. Data Sheet. Parameter Conditions. Min. Typ. Max. Unit |
| Revision | C |
| File Format / Size | PDF / 467 Kb |
| Document Language | English |
AD7942. Data Sheet. Parameter Conditions. Min. Typ. Max. Unit
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AD7942 Data Sheet Parameter Conditions Min Typ Max Unit
DIGITAL OUTPUTS Data Format Serial 14 bits straight binary Pipeline Delay Conversion results available immediately after completed conversion VOL ISINK = +500 μA 0.4 V VOH ISOURCE = −500 μA VIO − 0.3 V POWER SUPPLIES VDD Specified performance 2.3 5.5 V VIO Specified performance 2.3 VDD + 0.3 V VIO Range 1.8 VDD + 0.3 V Standby Current4, 5 VDD and VIO = 5 V, at 25°C 1 50 nA Power Dissipation VDD = 2.5 V, 100 SPS throughput 1.25 μW VDD = 2.5 V, 100 kSPS throughput 1.25 2 mW VDD = 2.5 V, 200 kSPS throughput 2.5 4 mW VDD = 5 V, 100 kSPS throughput 3.6 5 mW VDD = 5 V, 250 kSPS throughput 12.5 mW TEMPERATURE RANGE6 Specified Performance TMIN to TMAX −40 +85 °C 1 LSB means least significant bit. With a 5 V input range, 1 LSB = 305.2 μV. 2 See the Terminology section. These specifications do include full temperature range variation but do not include the error contribution from the external reference. 3 All specifications in decibels are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. 4 With all digital inputs forced to VIO or GND as required. 5 During acquisition phase. 6 Contact Analog Devices, Inc., sales for an extended temperature range. Rev. C | Page 4 of 24 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration 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 Digital Interface /CS Mode 3-Wire Without Busy Indicator /CS Mode 3-Wire with Busy Indicator /CS Mode 4-Wire Without Busy Indicator /CS Mode 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of AD7942 Outline Dimensions Ordering Guide
AD7942 Data Sheet Parameter Conditions Min Typ Max Unit
DIGITAL OUTPUTS Data Format Serial 14 bits straight binary Pipeline Delay Conversion results available immediately after completed conversion VOL ISINK = +500 μA 0.4 V VOH ISOURCE = −500 μA VIO − 0.3 V POWER SUPPLIES VDD Specified performance 2.3 5.5 V VIO Specified performance 2.3 VDD + 0.3 V VIO Range 1.8 VDD + 0.3 V Standby Current4, 5 VDD and VIO = 5 V, at 25°C 1 50 nA Power Dissipation VDD = 2.5 V, 100 SPS throughput 1.25 μW VDD = 2.5 V, 100 kSPS throughput 1.25 2 mW VDD = 2.5 V, 200 kSPS throughput 2.5 4 mW VDD = 5 V, 100 kSPS throughput 3.6 5 mW VDD = 5 V, 250 kSPS throughput 12.5 mW TEMPERATURE RANGE6 Specified Performance TMIN to TMAX −40 +85 °C 1 LSB means least significant bit. With a 5 V input range, 1 LSB = 305.2 μV. 2 See the Terminology section. These specifications do include full temperature range variation but do not include the error contribution from the external reference. 3 All specifications in decibels are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale, unless otherwise specified. 4 With all digital inputs forced to VIO or GND as required. 5 During acquisition phase. 6 Contact Analog Devices, Inc., sales for an extended temperature range. Rev. C | Page 4 of 24 Document Outline Features Applications Application Diagram General Description Table of Contents Revision History Specifications Timing Specifications Timing Diagrams Absolute Maximum Ratings ESD Caution Pin Configuration 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 Digital Interface /CS Mode 3-Wire Without Busy Indicator /CS Mode 3-Wire with Busy Indicator /CS Mode 4-Wire Without Busy Indicator /CS Mode 4-Wire with Busy Indicator Chain Mode Without Busy Indicator Chain Mode with Busy Indicator Application Hints Layout Evaluating the Performance of AD7942 Outline Dimensions Ordering Guide
