Datasheet AD7314 (Analog Devices) - 2

AD7314–SPECIFICATIONS*(TA = TMIN to TMAX, VDD = 2.65 V to 5.5 V, unless otherwise noted.) Parameter Min Typ Max Unit Test Conditions/Comments
TEMPERATURE SENSOR AND ADC Accuracy ±2.0 ∞C TA = –35∞C to +85∞C. VDD = 2.65 V to 2.9 V ±1.0 ∞C TA = –35∞C to +85∞C. VDD = 3 V to 5.5 V Resolution 10 Bits Update Rate, tR 400 ms Temperature Conversion Time 25 ms SUPPLIES Supply Voltage 2.65 5.5 V For Specified Performance Supply Current Normal Mode (Inactive) 250 300 mA Part Not Converting, VDD = 2.65 V to 2.9 V 275 mA Part Not Converting, VDD = 3 V to 5.5 V Normal Mode (Active) 1 mA Part Converting, VDD = 2.65 V to 2.9 V 1.2 mA Part Converting, VDD = 3 V to 5.5 V Shutdown Mode 1 mA VDD = 2.65 V to 2.9 V 1 mA VDD = 3 V to 5.5 V Power Dissipation 860 mW VDD = 2.65 V. Using Normal Mode (Auto Conversion) Power Dissipation VDD = 2.65 V. Using Shutdown Mode 1 SPS 3 mW 10 SPS 3.3 mW 100 SPS 6 mW DIGITAL INPUT Input High Voltage, VIH 1.85 V VDD = 2.65 V to 2.9 V Input Low Voltage, VIL 0.53 V VDD = 2.65 V to 2.9 V Input High Voltage, VIH 2.4 V VDD = 3 V to 5.5 V Input Low Voltage, VIL 0.8 V VDD = 3 V to 5.5 V Input Current, I ± IN 1 mA VIN = 0 V to VDD Input Capacitance, CIN 10 pF All Digital Inputs DIGITAL OUTPUT Output High Voltage, VOH 2.4 V ISOURCE = ISINK = 200 mA Output Low Voltage, VOL 0.4 V IOL = 200 mA Output Capacitance, COUT 50 pF *All specifications apply for –35∞C to +85∞C, unless otherwise noted. Specifications subject to change without notice.
TIMING CHARACTERISTICS1, 2 (T 3A = TMIN to TMAX, VDD = 2.65 V to 5.5 V, unless otherwise noted. See Figure 1.) Parameter Limit Unit Comments
t1 0 ns min CE to SCLK Setup Time t2 50 ns min SCLK High Pulse Width t3 50 ns min SCLK Low Pulse Width t 4 4 35 ns max Data Access Time after SCLK Rising Edge t5 20 ns min Data Setup Time prior to SCLK Falling Edge t6 0 ns min Data Hold Time after SCLK Falling Edge t7 0 ns min CE to SCLK Hold Time t 4 8 40 ns max CE to SDO 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 VDD) and are timed from a voltage level of 1.6 V. 3All specifications apply for –35∞C to +85∞C, unless otherwise noted. 4Measured with the load circuit of Figure 2. Specifications subject to change without notice. –2– REV. A Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS SPECIFICATIONS TIMING CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS ORDERING GUIDE PIN CONFIGURATION PIN FUNCTION DESCRIPTIONS CIRCUIT INFORMATION CONVERTER DETAILS Temperature Value Register Serial Interface Read Operation Write Operation MICROCONTROLLER INTERFACING MOUNTING THE AD7314 SUPPLY DECOUPLING TYPICAL TEMPERATURE ERROR GRAPHS OUTLINE DIMENSIONS Revision History