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AD9705-EB Datasheet(PDF) 11 Page - Analog Devices |
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AD9705-EB Datasheet(HTML) 11 Page - Analog Devices |
11 / 52 page AD9704/AD9705/AD9706/AD9707 Rev. 0 | Page 11 of 52 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS AD9707 AD9707 TOP VIEW (Not to Scale) PIN 1 INDICATOR 8 7 6 5 4 3 2 1 DB1 DB2 DB3 DB4 DB5 DVDD DB6 DB7 17 18 19 20 21 22 23 24 PIN/SPI/RESET AVDD OTCM IOUTB IOUTA ACOM REFIO FS ADJ Figure 3. AD9707 Pin Configuration Table 9. AD9707 Pin Function Descriptions Pin No. Mnemonic Description 27 DB13 (MSB) Most Significant Data Bit (MSB). 28 to 32, 1, 2, 4 to 8 DB12 to DB1 Data Bit 12 to Data Bit 1. 9 DB0 (LSB) Least Significant Data Bit (LSB). 25 SLEEP/CSB In pin mode, active high powers down chip. In SPI mode, this pin is the serial port chip select (active low). 23 REFIO Reference Input/Output. Serves as reference input when internal reference disabled. Serves as 1.0 V reference output when internal reference activated. Requires a 0.1 μF capacitor to ACOM when internal reference activated. 24 FS ADJ Full-Scale Current Output Adjust. 22 ACOM Analog Common. 20 IOUTB Complementary DAC Current Output. Full-scale current is sourced when all data bits are 0s. 21 IOUTA DAC Current Output. Full-scale current is sourced when all data bits are 1s. 18 AVDD Analog Supply Voltage (1.7 V to 3.6 V). 19 OTCM Adjustable Output Common Mode. Refer to the Theory of Operation section for details. 17 PIN/SPI/RESET Selects SPI mode or pin mode operation. Active high for pin mode operation. Active low for SPI mode operation. Pulse high to reset SPI registers to default values. 16 MODE/SDIO In pin mode, this selects the input data format. Connect to DCOM for straight binary, DVDD for twos complement. In SPI mode, this pin acts as SPI data input/output. 15 CMODE/SCLK In pin mode, this pin selects the clock input type. Connect to CLKCOM for single-ended clock receiver (drive CLK+ and float CLK–). Connect to CLKVDD for differential receiver. In SPI mode, this pin is the serial data clock input. 14 CLKCOM Clock Common. 13 CLK− Differential Clock Input. 12 CLK+ Differential Clock Input. 11 CLKVDD Clock Supply Voltage (1.7 V to 3.6 V). 10, 26 DCOM Digital Common. 3 DVDD Digital Supply Voltage (1.7 V to 3.6 V). |
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