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AD7859AS Datasheet(PDF) 3 Page - Analog Devices |
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AD7859AS Datasheet(HTML) 3 Page - Analog Devices |
3 / 28 page REV. A –3– Parameter A Version1 B Version1 Units Test Conditions/Comments CONVERSION RATE tCLKIN × 18 Conversion Time 4.5 (10) 4.5 µs max (L Versions Only, 0 °C to +70°C, 1.8 MHz CLKIN) Track/Hold Acquisition Time 0.5 (1) 0.5 µs min (L Versions Only, –40 °C to +85°C, 1.8 MHz CLKIN) POWER REQUIREMENTS AVDD, DVDD +3.0/+5.5 +3.0/+5.5 V min/max IDD Normal Mode 5 5.5 (1.95) 5.5 mA max AVDD = DVDD = 4.5 V to 5.5 V. Typically 4.5 mA 5.5 (1.95) 5.5 mA max AVDD = DVDD = 3.0 V to 3.6 V. Typically 4.0 mA Sleep Mode 6 With External Clock On 10 10 µA typ Full Power-Down. Power Management Bits in Control Register Set as PMGT1 = 1, PMGT0 = 0. 400 400 µA typ Partial Power-Down. Power Management Bits in Control Register Set as PMGT1 = 1, PMGT0 = 1. With External Clock Off 5 5 µA max Typically 1 µA. Full Power-Down. Power Management Bits in Control Register Set as PMGT1 = 1, PMGT0 = 0. 200 200 µA typ Partial Power-Down. Power Management Bits in Control Register Set as PMGT1 = 1, PMGT0 = 1. Normal Mode Power Dissipation 30 (10) 30 (10) mW max VDD = 5.5 V: Typically 25 mW (8); SLEEP = VDD 20 (6.5) 20 (6.5) mW max VDD = 3.6 V: Typically 15 mW (5.4); SLEEP = VDD Sleep Mode Power Dissipation With External Clock On 55 55 µW typ VDD = 5.5 V; SLEEP = 0 V 36 36 µW typ VDD = 3.6 V; SLEEP = 0 V With External Clock Off 27.5 27.5 µW max VDD = 5.5 V: Typically 5.5 µW; SLEEP = 0 V 18 18 µW max VDD = 3.6 V: Typically 3.6 µW; SLEEP = 0 V SYSTEM CALIBRATION Offset Calibration Span 7 +0.05 × V REF/–0.05 × VREF V max/min Allowable Offset Voltage Span for Calibration Gain Calibration Span 7 +1.025 × V REF/–0.975 × V REF V max/min Allowable Full-Scale Voltage Span for Calibration NOTES 1Temperature range as follows: A, B Versions, –40 °C to +85°C. 2Specifications apply after calibration. 3SNR calculation includes distortion and noise components. 4Not production tested, guaranteed by characterization at initial product release. 5All digital inputs @ DGND except for CONVST, SLEEP, CAL, and SYNC @ DV DD. No load on the digital outputs. Analog inputs @ AGND. 6CLKIN @ DGND when external clock off. All digital inputs @ DGND except for CONVST, SLEEP, CAL, and SYNC @ DV DD. No load on the digital outputs. Analog inputs @ AGND. 7The offset and gain calibration spans are defined as the range of offset and gain errors that the AD7859/AD7859L can calibrate. Note also that these are voltage spans and are not absolute voltages (i.e., the allowable system offset voltage presented at AIN(+) for the system offset error to be adjusted out will be AIN(–) ± 0.05 × V REF, and the allowable system full-scale voltage applied between AIN(+) and AIN(–) for the system full-scale voltage error to be adjusted out will be VREF ± 0.025 × V REF). This is explained in more detail in the calibration section of the data sheet. Specifications subject to change without notice. AD7859/AD7859L |
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