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AD7538KR-REEL Datasheet(PDF) 7 Page - Analog Devices |
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AD7538KR-REEL Datasheet(HTML) 7 Page - Analog Devices |
7 / 16 page AD7538 Rev. B | Page 7 of 16 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS VREF 1 RFB 2 IOUT 3 AGND 4 VSS 24 VDD 23 WR 22 CS 21 DGND 5 (MSB) DB13 6 DB12 7 LDAC 20 DB0 (LSB) 19 DB1 18 DB11 8 DB2 17 DB10 9 DB3 16 DB9 10 DB4 15 DB8 11 DB5 14 DB7 12 DB6 13 AD7538 TOP VIEW (Not to Scale) Figure 3. Pin Configuration Table 5. Pin Function Description Pin No. Mnemonic Description 1 VREF Voltage Reference. 2 RFB Feedback Resistor. Used to close the loop around an external op amp. 3 IOUT Current Output Terminal. 4 AGND Analog Ground 5 DGND Digital Ground. 6 to 19 DB13 to DB0 Data Inputs. Bit DB13 (MSB) to Bit DB0 (LSB). 20 LDAC Chip Select Input. Active low. 21 CS Asynchronous Load DAC Input. Active low. 22 WR Write Input. Active low. CS LDAC WR Operation 0 1 0 Load input register. 1 0 X1 Load DAC register from input register. 0 0 0 Input and DAC registers are transparent. 1 1 X1 No operation. X X 1 1 1 No operation. 23 VDD +12 V to +15 V Supply Input. 24 VSS Bias pin for high temperature low leakage configuration. To implement low leakage system, the pin should be at a negative voltage. See Figure 6 and Figure 8 for recommended circuitry. 1 X = don’t care. |
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