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AD5426YRM-REEL Arkusz danych(PDF) 6 Page - Analog Devices |
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AD5426YRM-REEL Arkusz danych(HTML) 6 Page - Analog Devices |
6 / 24 page REV. 0 –6– AD5426/AD5432/AD5443 PIN CONFIGURATION IOUT1 110 RFB SDIN 56 SYNC SCLK 47 SDO GND 38 VDD IOUT2 29 VREF AD5426/ AD5432/ AD5443 (Not to Scale) PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Function 1IOUT1 DAC Current Output. 2IOUT2 DAC Analog Ground. This pin should normally be tied to the analog ground of the system. 3GND Ground Pin. 4 SCLK Serial Clock Input. By default, data is clocked into the input shift register on the falling edge of the serial clock input. Alternatively, by means of the serial control bits, the device may be configured such that data is clocked into the shift register on the rising edge of SCLK. 5SDIN Serial Data Input. Data is clocked into the 16-bit input register on the active edge of the serial clock input. By default, on power-up, data is clocked into the shift register on the falling edge of SCLK. The control bits allow the user to change the active edge to rising edge. 6 SYNC Active Low Control Input. This is the frame synchronization signal for the input data. When SYNC goes low, it powers on the SCLK and DIN buffers, and the input shift register is enabled. Data is loaded to the shift register on the active edge of the following clocks (power-on default is falling clock edge). In standalone mode, the serial interface counts clocks and data is latched to the shift register on the 16th active clock edge. 7SDO Serial Data Output. This allows a number of parts to be daisy-chained. By default, data is clocked into the shift register on the falling edge and out via SDO on the rising edge of SCLK. Data will always be clocked out on the alternate edge to loading data to the shift register. Writing the Readback control word to the shift register makes the DAC register contents available for readback on the SDO pin, clocked out on the opposite edges to the active clock edge. 8VDD Positive Power Supply Input. These parts can be operated from a supply of 3 V to 5.5 V. 9VREF DAC Reference Voltage Input. 10 RFB DAC Feedback Resistor pin. Establish voltage output for the DAC by connecting to external amplifier output. |
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