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DAC7634EB Scheda tecnica(PDF) 5 Page - Texas Instruments |
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DAC7634EB Scheda tecnica(HTML) 5 Page - Texas Instruments |
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5 / 33 page  www.ti.com DAC7634 SBAS134B – JULY 2004 – REVISED DECEMBER 2005 PIN DESCRIPTIONS PIN NAME DESCRIPTION PIN NAME DESCRIPTION 1 NC No connection 25 VCC Analog +5-V power supply 2 NC No connection 26 VCC Analog +5-V power supply 3 SDI Serial data input 27 AGND Analog ground 4 DGND Digital ground 28 AGND Analog ground 5 CLK Data clock input 29 VSS Analog +5-V power supply or 0-V single supply 6 DGND Digital ground 30 VSS Analog +5-V power supply or 0-V single supply 7 LDAC DAC register load control, rising edge triggered 31 VOUTD DAC D output voltage DAC D's output amplifier inverting input. Used to close 8 DGND Digital ground 32 VOUTD Sense feedback loop at load. 9 LOAD DAC input register load control, active low 33 VREFL CD Sense DAC C and D reference low sense input 10 DGND Digital ground 34 VREFL CD DAC C and D reference low input 11 CS Chip select, active low 35 VREFH CD DAC C and D reference high input 12 DGND Digital ground 36 VREFH CD Sense DAC C and D reference high sense input 13 SDO Serial data output 37 VOUTC DAC C output voltage DAC C's output amplifier inverting input. Used to close 14 DGND Digital ground 38 VOUTC Sense the feedback loop at the load. Reset Select. Determines the action of RST. If HIGH, a RST common sets the DAC registers to 15 RSTSEL 39 VOUTB DAC B output voltage mid-scale (8000H). If LOW, a RST command sets the DAC registers to zero (0000H). DAC B's output amplifier inverting input. Used to close 16 DGND Digital ground 40 VOUTB Sense the feedback loop at the load. Reset, rising edge triggered. Depending on the 17 RST state of RSTSEL, the DAC registers are set to 41 VREFH AB Sense DAC A and B reference high sense input either mid-scale or zero. 18 DGND Digital ground 42 VREFH AB DAC A and B reference high input 19 NC No connection 43 VREFL AB DAC A and B reference low input 20 NC No connection 44 VREFL AB Sense DAC A and B reference low sense input 21 DGND Digital ground 45 VSS Analog –5-V power supply or 0-V single supply 22 DGND Digital ground 46 AGND Analog ground 23 VDD Digital 5-V power supply 47 VOUTA DAC A output voltage DAC A's output amplifier inverting input. Used to close 24 VDD Digital 5-V power supply 48 VOUTA Sense the feedback loop at the load. 5 |
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