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AD7709BRU Arkusz danych(PDF) 2 Page - Analog Devices |
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AD7709BRU Arkusz danych(HTML) 2 Page - Analog Devices |
2 / 17 page –2– REV. PrA January 2001 AD7709-SPECIFICATIONS1 (VDD = +3V or +5.0V , REFIN(+) = +2.5V; REFIN(-) = 0V; XTAL1/XTAL2 = 32 kHz Crystal; All specifications TMIN to TMAX unless otherwise noted.) PRELIMINARY TECHNICAL DATA PARAMETER B Grade Units Test Conditions Output Update Rate 5.4 Hz min. 105 Hz max. 0.021Hz (0.732msec.) increments No Missing Codes 16 bits min. Resolution 13 bits pk-pk +20mV range, 20Hz Update Rate 16 bits pk-pk +2.56V range, 20Hz Update Rate Output Noise and Update Rates See Tables Below in ADC Description Integral Nonlinearity 15 ppm of FSR max. Offset Error T B D Offset Error Drift Vs Temp 10 nV/°C typ. Offset Error Drift Vs Time T B D nV/1000 Hours typ. Gain Error T B D Gain Error Drift Vs Temp 1 ppm/°Ctyp. Gain Error Drift Vs Time T B D ppm/1000 Hours typ. Power Supply Rejection(PSR) 90 dB min. Input Range = ±20mV 90 dB min. Input Range = ±2.56V Common Mode Rejection(CMR) On AIN 90 dB min. At DC, Range = ±20mV On AIN 90 dB min. At DC, Range = ±2.56V On REFIN 90 dB min. At DC, Range = ±20mV On REFIN 90 dB min. At DC, Range = ±2.56V Analog Input Current DC Bias Current 1 nA max. DC Bias Current Drift T B D nA typ. DC Offset Current T B D nA typ. DC Offset Current Drift T B D nA typ. REFERENCE INPUTS (REFIN1& REFIN2) Normal Mode 50Hz/60Hz Rejection 60 dB min. Reference DC Input Current T B D µA typ. REFIN(+) to REFIN(-) Voltage +2.5V nom. REFIN referes to both REFIN1 and REFIN2 REFIN(+) to REFIN(-) Range + 1 V min. VDD V max. REFIN Common Mode Range GND-30mV V min. VDD+30mV V max. REFIN Common Mode 50/60Hz Rejection T B D dB min. ANALOG INPUTS Normal Mode 50Hz/60Hz Rejection 60 dB min. 50/60Hz ±1Hz , 20Hz Update Rate Common Mode 50/60Hz Rejection 90 dB min. 50/60Hz ±1Hz, Range = ±20mV 90 dB min. 50/60Hz ±1Hz, Range = ±2.5V Differential Input Voltage Ranges ±REFIN/GAIN V nom. REFIN refers to both REFIN1 and REFIN2. REFIN=REFIN(+ )-REFIN(-) GAIN=1to 128. Pseudo-Differential Input Voltage Ranges 0V to REFIN/GAIN V nom. Full-scale Range Matching 5 uV typ. Absolute Ain Voltage Limits Buffered Inputs GND+50mV V min. VDD-50mV V max Unbuffered Inputs GND-30mV Vmin VDD+30mV Vmax |
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