Datasheet AD7691 (Analog Devices) - 5
| Fabricante | Analog Devices |
| Descripción | 18-Bit, 1.5 LSB INL, 250 kSPS PulSAR® Differential ADC in MSOP/QFN |
| Páginas / Página | 29 / 5 — AD7691. Data Sheet. Table 3. Parameter. Conditions/Comments. Min. Typ. … |
| Revisión | E |
| Formato / tamaño de archivo | PDF / 937 Kb |
| Idioma del documento | Inglés |
AD7691. Data Sheet. Table 3. Parameter. Conditions/Comments. Min. Typ. Max. Unit
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AD7691 Data Sheet
VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 3. Parameter Conditions/Comments Min Typ Max Unit
REFERENCE Voltage Range 0.5 VDD + 0.3 V Load Current 250 kSPS, REF = 5 V 60 µA SAMPLING DYNAMICS −3 dB Input Bandwidth 2 MHz Aperture Delay VDD = 5 V 2.5 ns DIGITAL INPUTS Logic Levels VIL −0.3 +0.3 × VIO V VIH 0.7 × VIO VIO + 0.3 V IIL −1 +1 µA IIH −1 +1 µA DIGITAL OUTPUTS Data Format Serial 18-bit, twos complement Pipeline Delay1 VOL ISINK = +500 µA 0.4 V VOH ISOURCE = −500 µA VIO − 0.3 V POWER SUPPLIES VDD Specified performance 2.3 5.25 V VIO Specified performance 2.3 VDD + 0.3 V VIO Range 1.8 VDD + 0.3 V Standby Current2, 3 VDD and VIO = 5 V, TA = 25°C 1 50 nA Power Dissipation VDD = 2.5 V, 100 SPS throughput 1.4 µW VDD = 2.5 V, 100 kSPS throughput 1.35 mW VDD = 2.5 V, 180 kSPS throughput 2.4 mW VDD = 5 V, 100 kSPS throughput 4.24 5 mW VDD = 5 V, 250 kSPS throughput 10.6 12.5 mW Energy per Conversion 50 nJ/sample TEMPERATURE RANGE4 Specified Performance TMIN to TMAX −40 +85 °C 1 Conversion results are available immediately after completed conversion. 2 With all digital inputs forced to VIO or GND as required. 3 During acquisition phase. 4 Contact an Analog Devices, Inc., sales representative for the extended temperature range. Rev. E | Page 4 of 28 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION 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 TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER 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 AD7691 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE
VDD = 2.3 V to 5.25 V, VIO = 2.3 V to VDD, VREF = VDD, all specifications TMIN to TMAX, unless otherwise noted.
Table 3. Parameter Conditions/Comments Min Typ Max Unit
REFERENCE Voltage Range 0.5 VDD + 0.3 V Load Current 250 kSPS, REF = 5 V 60 µA SAMPLING DYNAMICS −3 dB Input Bandwidth 2 MHz Aperture Delay VDD = 5 V 2.5 ns DIGITAL INPUTS Logic Levels VIL −0.3 +0.3 × VIO V VIH 0.7 × VIO VIO + 0.3 V IIL −1 +1 µA IIH −1 +1 µA DIGITAL OUTPUTS Data Format Serial 18-bit, twos complement Pipeline Delay1 VOL ISINK = +500 µA 0.4 V VOH ISOURCE = −500 µA VIO − 0.3 V POWER SUPPLIES VDD Specified performance 2.3 5.25 V VIO Specified performance 2.3 VDD + 0.3 V VIO Range 1.8 VDD + 0.3 V Standby Current2, 3 VDD and VIO = 5 V, TA = 25°C 1 50 nA Power Dissipation VDD = 2.5 V, 100 SPS throughput 1.4 µW VDD = 2.5 V, 100 kSPS throughput 1.35 mW VDD = 2.5 V, 180 kSPS throughput 2.4 mW VDD = 5 V, 100 kSPS throughput 4.24 5 mW VDD = 5 V, 250 kSPS throughput 10.6 12.5 mW Energy per Conversion 50 nJ/sample TEMPERATURE RANGE4 Specified Performance TMIN to TMAX −40 +85 °C 1 Conversion results are available immediately after completed conversion. 2 With all digital inputs forced to VIO or GND as required. 3 During acquisition phase. 4 Contact an Analog Devices, Inc., sales representative for the extended temperature range. Rev. E | Page 4 of 28 Document Outline FEATURES APPLICATIONS APPLICATION DIAGRAM GENERAL DESCRIPTION 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 TYPICAL CONNECTION DIAGRAM ANALOG INPUTS DRIVER AMPLIFIER CHOICE SINGLE-TO-DIFFERENTIAL DRIVER 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 AD7691 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE