Datasheet AD7674 (Analog Devices) - 5

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AD7674 Data Sheet Parameter Test Conditions/Comments Min Typ Max Unit
REFERENCE External Reference Voltage Range REF 3 4.096 AVDD + 0.1 V REF Voltage with Reference Buffer REFBUFIN = 2.5 V 4.05 4.096 4.15 V Reference Buffer Input Voltage Range REFBUFIN 1.8 2.5 2.6 V REFBUFIN Input Current −1 +1 µA REF Current Drain 800 kSPS throughput 330 µA DIGITAL INPUTS Logic Levels VIL −0.3 +0.8 V VIH +2.0 DVDD + 0.3 V IIL −1 +1 µA IIH −1 +1 µA DIGITAL OUTPUTS Data Format5 Pipeline Delay6 VOL ISINK = 1.6 mA 0.4 V VOH ISOURCE = −500 µA OVDD − 0.6 V POWER SUPPLIES Specified Performance AVDD 4.75 5 5.25 V DVDD 4.75 5 5.25 V OVDD 2.7 DVDD + 0.37 V Operating Current8 800 kSPS throughput AVDD 16 mA DVDD9 6.5 mA OVDD9 50 µA POWER DISSIPATION9 PDBUF high at 500 kSPS10 78 90 mW PDBUF high at 1 kSPS10 160 µW PDBUF high at 800 kSPS8 114 126 mW PDBUF low at 800 kSPS8 126 138 mW TEMPERATURE RANGE11 Specified Performance TMIN to TMAX −40 +85 °C 1 See the Analog Inputs section. 2 LSB means least significant bit. With the ±4.096 V input range, 1 LSB is 31.25 µV. 3 See the Terminology section. The nominal gain error is not centered at zero and is −0.029% of FSR. This specification is the deviation from this nominal value. These specifications do not include the error contribution from the external reference, but do include the error contribution from the reference buffer if used. 4 All specifications in dB are referred to a full-scale input, FS. Tested with an input signal at 0.5 dB below full scale unless otherwise specified. 5 Data format parallel or serial 18-bit. 6 Conversion results are available immediately after completed conversion. 7 The max should be the minimum of 5.25 V and DVDD + 0.3 V. 8 In warp mode. 9 Tested in parallel reading mode. 10 In impulse mode. 11 Contact factory for extended temperature range. Rev. B | Page 4 of 28 Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TERMINOLOGY TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT INFORMATION CONVERTER OPERATION Modes of Operation Transfer Functions TYPICAL CONNECTION DIAGRAM Analog Inputs Driver Amplifier Choice Single-to-Differential Driver Voltage Reference Power Supply POWER DISSIPATION VERSUS THROUGHPUT CONVERSION CONTROL DIGITAL INTERFACE PARALLEL INTERFACE SERIAL INTERFACE MASTER SERIAL INTERFACE Internal Clock SLAVE SERIAL INTERFACE External Clock External Discontinuous Clock Data Read after Conversion External Clock Data Read during Conversion MICROPROCESSOR INTERFACING Serial Peripheral Interface (SPI) APPLICATIONS INFORMATION LAYOUT EVALUATING AD7674 PERFORMANCE OUTLINE DIMENSIONS ORDERING GUIDE NOTES NOTES