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DAC7744EB Datasheet(PDF) 5 Page - Texas Instruments |
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DAC7744EB Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 29 page  5 ® DAC7744 PIN DESCRIPTIONS PIN NAME DESCRIPTION 1 DB15 Data Bit 15, MSB 2 DB14 Data Bit 14 3 DB13 Data Bit 13 4 DB12 Data Bit 12 5 DB11 Data Bit 11 6 DB10 Data Bit 10 7 DB9 Data Bit 9 8 DB8 Data Bit 8 9 DB7 Data Bit 7 10 DB6 Data Bit 6 11 DB5 Data Bit 5 12 DB4 Data Bit 4 13 DB3 Data Bit 3 14 DB2 Data Bit 2 15 DB1 Data Bit 1 16 DB0 Data Bit 0, LSB 17 RSTSEL Reset Select. Determines the action of RST. If HIGH, a RST command will set the DAC regis- ters to mid-scale. If LOW, a RST command will set the DAC registers to zero. 18 RST Reset, Edge-Triggered. Depending on the state of RSTSEL, the DAC Input and Output registers are set to either mid-scale or zero. 19 LOADDACs DAC Output Registers Load Control. Rising edge triggered. 20 R/W Enabled by the CS, controls data read and write from the input register. 21 A1 Enabled by the CS, in combination with A0 selects the Individual DAC Input Registers. 22 A0 Enabled by the CS, in combination with A1 selects the individual DAC input registers. 23 CS Chip Select, Active LOW. 24 DGND Digital Ground 25 VDD Positive Power Supply 26 VCC Positive Power Supply 27 AGND Analog Ground 28 VSS Negative Power Supply 29 VOUTD DAC D Voltage Output 30 VOUTD Sense DAC D’s Output Amplifier Inverting Input. Used to close the feedback loop at the load. 31 VREFL CD Sense DAC C and D Reference Low Sense Input 32 VREFL CD DAC C and D Reference Low Input 33 VREFH CD DAC C and D Reference High Input 34 VREFH CD Sense DAC C and D Reference High Sense Input 35 VOUTC DAC C Voltage Output 36 VOUTC Sense DAC C’s Output Amplifier Inverting Input. Used to close the feedback loop at the load. 37 VOUTB DAC B Voltage Output 38 VOUTB Sense DAC B’s Output Amplifier Inverting Input. Used to close the feedback loop at the load. 39 VREFH AB Sense DAC A and B Reference High Sense Input 40 VREFH AB DAC A and B Reference High Input 41 VREFL AB DAC A and B Reference Low Input 42 VREFL AB Sense DAC A and B Reference Low Sense Input 43 VOUTA DAC A Voltage Input 44 VOUTA Sense DAC A’s Output Amplifier Inverting Input. Used to close the feedback loop at the load. 45 NC No Connection 46 NC No Connection 47 NC No Connection 48 NC No Connection Top View SSOP PIN CONFIGURATION DB15 (MSB) DB14 DB13 DB12 DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 (LSB) RSTSEL RST LOADDACs R/W A1 A0 CS DGND NC NC NC NC V OUTA Sense V OUTA V REFL AB Sense V REFL AB V REFH AB V REFH AB Sense V OUTB Sense V OUTB V OUTC Sense V OUTC V REFH CD Sense V REFH CD V REFL CD V REFL CD Sense V OUTD Sense V OUTD V SS AGND V CC V DD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 DAC7744 |
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