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ADS7808 Datasheet(PDF) 6 Page - Burr-Brown (TI) |
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ADS7808 Datasheet(HTML) 6 Page - Burr-Brown (TI) |
6 / 13 page ADS7808 6 SBAS018A www.ti.com HEX HEX DESCRIPTION BINARY CODE CODE BINARY CODE CODE Full-Scale Range ±10 ±5 ±3.33V 0V to 5V 0V to 10V 0V to 4V Least Significant Bit (LSB) 4.88mV 2.44mV 1.63mV 1.22mV 2.44mV 0.98mV +Full Scale (FS – 1LSB) 9.99512V 4.99756V 3.33171V 4.99878V 9.99756V 3.99902V 0111 1111 1111 7FF 1111 1111 1111 FFF Midscale 0V 0V 0V 2.5V 5V 2V 0000 0000 0000 000 1000 0000 0000 800 One LSB Below Midscale –4.88mV –2.44mV –1.63mV 2.49878V 4.99756V 1.99902V 1111 1111 1111 FFF 0111 1111 1111 7FF –Full Scale –10V –5V –3.333333V 0V 0V 0V 1000 0000 0000 800 0000 0000 0000 000 BINARY TWO’S COMPLEMENT STRAIGHT BINARY (SB/BTC LOW) (SB/BTC HIGH) Initiate Conversion and Output Data Using External Clock Power Down Selecting Output Format Incorrect Conversions SPECIFIC FUNCTION CS R/C BUSY EXT/INT DATACLK PWRD SB/BTC OPERATION Initiate Conversion and 1>0 0 1 0 Output 0 x Initiates conversion “n”. Data from conversion “n–1” Output Data Using clocked out on DATA synchronized to 12 clock Internal Clock pulses output on DATACLK. 0 1>0 1 0 Output 0 x Initiates conversion “n”. Data from conversion “n–1” clocked out on DATA synchronized to 12 clock pulses output on DATACLK. 1>0 0 1 1 Input 0 x Initiates conversion “n”. 0 1>0 1 1 Input 0 x Initiates conversion “n”. 1>0 1 1 1 Input x x Outputs a pulse on SYNC followed by data from conversion “n” clocked out synchronized to external DATACLK. 1>0 1 0 1 Input 0 x Outputs a pulse on SYNC followed by data from conversion “n–1” clocked out synchronized to external DATACLK.(1) Conversion “n” in process. 0 0>1 0 1 Input 0 x Outputs a pulse on SYNC followed by data from conversion “n–1” clocked out synchronized to external DATACLK .(1) Conversion “n” in process. 0 0 0>1 x x 0 x CS or R/C must be HIGH or a new conversion will be initiated without time for acquisition. x x x x x 0 x Analog circuitry powered. Conversion can proceed. x x x x x 1 x Analog circuitry disabled. Data from previous conversion maintained in output registers. x x x x x x 0 Serial data is output in Binary Two’s Complement format. x x x x x x 1 Serial data is output in Straight Binary format. NOTE: (1) See Figure 3b for constraints on previous data valid during conversion. Table III. Control Truth Table. ANALOG INPUT DIGITAL OUTPUT Table IV. Output Codes and Ideal Input Voltages. |
Similar Part No. - ADS7808_07 |
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Similar Description - ADS7808_07 |
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