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DAC7725NB Datasheet(PDF) 5 Page - Texas Instruments |
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DAC7725NB Datasheet(HTML) 5 Page - Texas Instruments |
5 / 21 page 5 ® DAC7724, 7725 Top View PIN CONFIGURATIONS PIN DESCRIPTIONS PIN NAME DESCRIPTION 1VREFH Reference Input Voltage High. Sets maximum output voltage for all DACs. 2VOUTB DAC B Voltage Output. 3VOUTA DAC A Voltage Output. 4VSS Negative Analog Supply Voltage, 0V or –15V. 5 GND Ground. 6 RESET Asynchronous Reset Input. Sets DAC and input registers to either mid-scale (800H, DAC7724) or zero-scale (000H, DAC7725) when LOW. 7 LDAC Load DAC Input. All DAC Registers are transparent when LOW. 8 DB0 Data Bit 0. Least significant bit of 12-bit word. 9 DB1 Data Bit 1 10 DB2 Data Bit 2 11 DB3 Data Bit 3 12 DB4 Data Bit 4 13 DB5 Data Bit 5 14 DB6 Data Bit 6 15 DB7 Data Bit 7 16 DB8 Data Bit 8 17 DB9 Data Bit 9 18 DB10 Data Bit 10 19 DB11 Data Bit 11. Most significant bit of 12-bit word. 20 R/W Read/Write Control Input (read = HIGH, write = LOW). 21 A1 Register/DAC Select (C or D = HIGH, A or B = LOW). 22 A0 Register/DAC Select (B or D = HIGH, A or C = LOW). 23 CS Chip Select Input. 24 VDD Positive Digital Supply, +5V. 25 VCC Positive Analog Supply Voltage, +15V nominal. 26 VOUTD DAC D Voltage Output. 27 VOUTC DAC C Voltage Output. 28 VREFL Reference Input Voltage Low. Sets minimum output voltage for all DACs. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 V REFH V OUTB V OUTA V SS GND RESET LDAC (LSB) DB0 DB1 DB2 DB3 DB4 DB5 DB6 V REFL V OUTC V OUTD V CC V DD CS A0 A1 R/W DB11 (MSB) DB10 DB9 DB8 DB7 28 27 26 25 24 23 22 21 20 19 18 17 16 15 DAC7724 DAC7725 GND RESET LDAC (LSB) DB0 DB1 DB2 DB3 5 6 7 8 9 10 11 25 24 23 22 21 20 19 V CC V DD CS A0 A1 R/W DB11 (MSB) 4 3 2 1 28 27 26 12 13 14 15 16 17 18 DAC7724 DAC7725 SO PLCC |
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