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ADT7517ARQ Arkusz danych(PDF) 4 Page - Analog Devices |
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ADT7517ARQ Arkusz danych(HTML) 4 Page - Analog Devices |
4 / 44 page ADT7516/ADT7517/ADT7519 Rev. A | Page 4 of 44 Parameter1 Min Typ Max Unit Conditions/Comments THERMAL CHARACTERISTICS EXTERNAL TEMPERATURE SENSOR External transistor = 2N3906. Accuracy @ VDD = 3.3 V ±10% ±1.5 °C TA = 85°C. ±3 °C TA = 0°C +85°C. ±5 °C TA = –40°C to +120°C. Accuracy @ VDD = 5 V ±5% ±2 ±3 °C TA = 0°C +85°C. ±3 ±5 °C TA = –40°C to +120°C. Resolution 10 Bits Equivalent to 0.25°C. Output Source Current 180 µA High Level. 11 µA Low Level. Thermal Voltage Output 8-Bit DAC Output Resolution 1 °C Scale Factor 8.97 mV/°C 0 V to VREF output. TA = –40°C to +120°C. 17.58 mV/°C 0 V to 2 VREF output. TA = –40°C to +120°C. 10-Bit DAC Output Resolution 0.25 °C Scale Factor 2.2 mV/°C 0 V to VREF output. TA = –40°C to +120°C. 4.39 mV/°C 0 V to 2 VREF output. TA = –40°C to +120°C. CONVERSION TIMES Single channel mode. Slow ADC VDD/AIN 11.4 ms Averaging (16 samples) on. 712 µs Averaging off. Internal Temperature 11.4 ms Averaging (16 samples) on. 712 µs Averaging off. External Temperature 24.22 ms Averaging (16 samples) on. 1.51 ms Averaging off. Fast ADC VDD/AIN 712 µs Averaging (16 samples) on. 44.5 µs Averaging off. Internal Temperature 2.14 ms Averaging (16 samples) on. 134 µs Averaging off. External Temperature 14.25 ms Averaging (16 samples) on. 890 µs Averaging off. ROUND ROBIN UPDATE RATE5 Slow ADC @ 25°C Time to complete one measurement cycle through all channels. Averaging On 79.8 ms AIN1 and AIN2 are selected on Pins 7 and 8. Averaging Off 4.99 ms AIN1 and AIN2 are selected on Pins 7 and 8. Averaging On 94.76 ms D+ and D– are selected on Pins 7 and 8. Averaging Off 9.26 ms D+ and D-– are selected on Pins 7 and 8. Fast ADC @ 25°C Averaging On 6.41 ms AIN1 and AIN2 are selected on Pins 7 and 8. Averaging Off 400.84 µs AIN1 and AIN2 are selected on Pins 7 and 8. Averaging On 21.77 ms D+ and D– are selected on Pins 7 and 8. Averaging Off 3.07 ms D+ and D– are selected on Pins 7 and 8. DAC EXTERNAL REFERENCE INPUT 4 VREF Input Range 1 VDD V Buffered reference. VREF Input Impedance >10 MΩ Buffered reference and power-down mode. Reference Feedthrough –90 dB Frequency = 10 kHz. Channel-to-Channel Isolation –75 dB Frequency = 10 kHz. |
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