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AD7837SQ 데이터시트(PDF) 5 Page - Analog Devices |
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AD7837SQ 데이터시트(HTML) 5 Page - Analog Devices |
5 / 12 page AD7837/AD7847 REV. C –5– AD7847 PIN FUNCTION DESCRIPTION (DIP AND SOIC PIN NUMBERS) Pin Mnemonic Description 11 CSA Chip Select Input for DAC A. Active low logic input. DAC A is selected when this input is low. 12 CSB Chip Select Input for DAC B. Active low logic input. DAC B is selected when this input is low. 13VREFA Reference Input Voltage for DAC A. This may be an ac or dc signal. 14VOUTA Analog Output Voltage from DAC A. 15 AGNDA Analog Ground for DAC A. 16VDD Positive Power Supply. 17VSS Negative Power Supply. 18 AGNDB Analog Ground for DAC B. 19VOUTB Analog Output Voltage from DAC B. 10 VREFB Reference Input Voltage for DAC B. This may be an ac or dc signal. 11 DGND Digital Ground. 12 DB11 Data Bit 11 (MSB). 13 WR Write Input. WR is a positive edge triggered input which is used in conjunction with CSA and CSB to write data to the DAC latches. 14–24 DB10–DB0 Data Bit 10 to Data Bit 0 (LSB). AD7837 PIN CONFIGURATION AD7847 PIN CONFIGURATION DIP AND SOIC DIP AND SOIC TOP VIEW (Not to Scale) 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 AD7837 AGNDA DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 A0 A1 LDAC WR VOUTA VREFA RFBA CS VDD VSS AGNDB VOUTB VREFB DGND RFBB TOP VIEW (Not to Scale) 24 23 22 21 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8 9 10 11 12 AD7847 AGNDA DB0 DB1 DB2 DB3 DB4 DB5 DB6 DB7 DB8 DB9 DB10 WR VOUTA VREFA CSB CSA VDD VSS AGNDB VOUTB VREFB DGND DB11 |
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