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AD7814ARMZ Datasheet(PDF) 3 Page - Analog Devices |
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AD7814ARMZ Datasheet(HTML) 3 Page - Analog Devices |
3 / 9 page REV. E –2– AD7814–SPECIFICATIONS1 Parameter Min Typ Max Unit Test Conditions/Comments TEMPERATURE SENSOR AND ADC Accuracy ±2.0 °CTA = 0°C to 85°C. VDD = 3 V to 5.5 V2 ±2.5 °CT A = –40 °C to 0°C. V DD = 3 V to 5.5 V 2 ±2.0 ±3.5 °CT A = –55 °C to +125°C. V DD = 3 V to 5.5 V Resolution 10 Bits Update Rate, tR 400 µs Temperature Conversion Time 25 µs SUPPLIES Supply Voltage 2.7 5.5 V For Specified Performance Supply Current Normal Mode 250 400 µA Shutdown Mode (VDD = 5 V) 1.23 3 µA Shutdown Mode (VDD = 3 V) 0.43 1 µA Power Dissipation 80 µWV DD = 3 V. Using Normal Mode Power Dissipation VDD = 3 V. Using Shutdown Mode 1 sps 3.7 µW 10 sps 3.9 µW 100 sps 5.8 µW DIGITAL INPUT 3 Input High Voltage, VIH 2.4 V Input Low Voltage, VIL 0.8 V Input Current, IIN ±1 µAV IN = 0 V to VDD Input Capacitance, CIN 10 pF All Digital Inputs DIGITAL OUTPUT 3 Output High Voltage, VOH VDD – 0.3 V ISOURCE = ISINK = 200 µA Output Low Voltage, VOL 0.4 V IOL = 200 µA Output Capacitance, COUT 50 pF NOTES 1All specifications apply for –55 °C to +125°C unless otherwise stated. 2For V DD = 2.7 V to 3 V and TA = –40 °C to +85°C, the typical temperature error is ±2°C. 3Guaranteed by design and characterization, not production tested. Specifications subject to change without notice. TIMING CHARACTERISTICS1, 2, 3 Parameter Limit Unit Comments t1 0 ns min CS to SCLK Setup Time t2 50 ns min SCLK High Pulse Width t3 50 ns min SCLK Low Pulse Width t4 4 35 ns max Data Access Time After SCLK Falling Edge t5 20 ns min Data Setup Time Prior to SCLK Rising Edge t6 0 ns min Data Hold Time After SCLK Rising Edge t7 0 ns min CS to SCLK Hold Time t8 4 40 ns max CS to DOUT High Impedance NOTES 1Guaranteed by design and characterization, not production tested. 2All input signals are specified with tr = tf = 5 ns (10% to 90% of V DD) and timed from a voltage level of 1.6 V. 3See Figure 2. 4Measured with the load circuit of Figure 1. Specifications subject to change without notice. (TA = TMIN to TMAX, VDD = 2.7 V to 5.5 V, unless otherwise noted.) (TA = TMIN to TMAX, VDD = 2.7 V to 5.5 V, unless otherwise noted.) |
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