Datasheet AD4020 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | 20-Bit, 1.8 MSPS, Precision SAR, Differential ADC |
| Pages / Page | 37 / 6 — Data Sheet. AD4020. Parameter. Test Conditions/Comments. Min. Typ. Max. … |
| Revision | A |
| File Format / Size | PDF / 802 Kb |
| Document Language | English |
Data Sheet. AD4020. Parameter. Test Conditions/Comments. Min. Typ. Max. Unit
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Text Version of Document
link to page 8 link to page 13
Data Sheet AD4020 Parameter Test Conditions/Comments Min Typ Max Unit
VIO Only 1.8 MSPS, high-Z mode disabled 1.0 mW Energy per Conversion 8.3 nJ/sample TEMPERATURE RANGE Specified Performance TMIN to TMAX −40 +125 °C 1 The acquisition phase is the time available for the input sampling capacitors to acquire a new input with the ADC running at a throughput rate of 1.8 MSPS. 2 A throughput rate of 1.8 MSPS can only be achieved with turbo mode enabled and a minimum SCK rate of 71 MHz. Refer to Table 4 for the maximum achievable throughput for different modes of operation. 3 Transient response is the time required for the ADC to acquire a full-scale input step to ±2 LSB accuracy. 4 The minimum and maximum values are guaranteed by characterization, but not production tested. 5 See the 1/f noise plot in Figure 18. Rev. A | Page 5 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION TRANSFER FUNCTIONS APPLICATIONS INFORMATION TYPICAL APPLICATION DIAGRAMS ANALOG INPUTS Input Overvoltage Clamp Circuit Differential Input Considerations Switched Capacitor Input RC Filter Values DRIVER AMPLIFIER CHOICE Single to Differential Driver High Frequency Input Signals Multiplexed Applications EASE OF DRIVE FEATURES Input Span Compression High-Z Mode Long Acquisition Phase VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE REGISTER READ/WRITE FUNCTIONALITY STATUS WORD /CS MODE, 3-WIRE TURBO MODE /CS MODE, 3-WIRE WITHOUT THE BUSY INDICATOR /CS MODE, 3-WIRE WITH THE BUSY INDICATOR /CS MODE, 4-WIRE TURBO MODE /CS MODE, 4-WIRE WITHOUT THE BUSY INDICATOR /CS MODE, 4-WIRE WITH THE BUSY INDICATOR DAISY-CHAIN MODE LAYOUT GUIDELINES EVALUATING THE AD4020 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
Data Sheet AD4020 Parameter Test Conditions/Comments Min Typ Max Unit
VIO Only 1.8 MSPS, high-Z mode disabled 1.0 mW Energy per Conversion 8.3 nJ/sample TEMPERATURE RANGE Specified Performance TMIN to TMAX −40 +125 °C 1 The acquisition phase is the time available for the input sampling capacitors to acquire a new input with the ADC running at a throughput rate of 1.8 MSPS. 2 A throughput rate of 1.8 MSPS can only be achieved with turbo mode enabled and a minimum SCK rate of 71 MHz. Refer to Table 4 for the maximum achievable throughput for different modes of operation. 3 Transient response is the time required for the ADC to acquire a full-scale input step to ±2 LSB accuracy. 4 The minimum and maximum values are guaranteed by characterization, but not production tested. 5 See the 1/f noise plot in Figure 18. Rev. A | Page 5 of 36 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION TRANSFER FUNCTIONS APPLICATIONS INFORMATION TYPICAL APPLICATION DIAGRAMS ANALOG INPUTS Input Overvoltage Clamp Circuit Differential Input Considerations Switched Capacitor Input RC Filter Values DRIVER AMPLIFIER CHOICE Single to Differential Driver High Frequency Input Signals Multiplexed Applications EASE OF DRIVE FEATURES Input Span Compression High-Z Mode Long Acquisition Phase VOLTAGE REFERENCE INPUT POWER SUPPLY DIGITAL INTERFACE REGISTER READ/WRITE FUNCTIONALITY STATUS WORD /CS MODE, 3-WIRE TURBO MODE /CS MODE, 3-WIRE WITHOUT THE BUSY INDICATOR /CS MODE, 3-WIRE WITH THE BUSY INDICATOR /CS MODE, 4-WIRE TURBO MODE /CS MODE, 4-WIRE WITHOUT THE BUSY INDICATOR /CS MODE, 4-WIRE WITH THE BUSY INDICATOR DAISY-CHAIN MODE LAYOUT GUIDELINES EVALUATING THE AD4020 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
