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DAC902UG4 Datasheet(PDF) 4 Page - Texas Instruments |
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DAC902UG4 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 24 page  DAC902 4 SBAS094B PIN DESIGNATOR DESCRIPTION 1 Bit 1 Data Bit 1 (D11), MSB 2 Bit 2 Data Bit 2 (D10) 3 Bit 3 Data Bit 3 (D9) 4 Bit 4 Data Bit 4 (D8) 5 Bit 5 Data Bit 5 (D7) 6 Bit 6 Data Bit 6 (D6) 7 Bit 7 Data Bit 7 (D5) 8 Bit 8 Data Bit 8 (D4) 9 Bit 9 Data Bit 9 (D3) 10 Bit 10 Data Bit 10 (D2) 11 Bit 11 Data Bit 11 (D1) 12 Bit 12 Data Bit 12 (D0), LSB 13 NC No Connection 14 NC No Connection 15 PD Power Down, Control Input; Active HIGH. Contains internal pull-down circuit; may be left unconnected if not used. 16 INT/EXT Reference Select Pin; Internal ( = 0) or External ( = 1) Reference Operation. 17 REFIN Reference Input/Ouput. See Applica- tions section for further details. 18 FSA Full-Scale Output Adjust 19 BW Bandwidth/Noise Reduction Pin: Bypass with 0.1 µF to +V A for Optimum Performance. 20 AGND Analog Ground 21 IOUT Complementary DAC Current Output 22 IOUT DAC Current Output 23 BYP Bypass Node: Use 0.1 µF to AGND 24 +VA Analog Supply Voltage, 2.7V to 5.5V 25 NC No Connection 26 DGND Digital Ground 27 +VD Digital Supply Voltage, 2.7V to 5.5V 28 CLK Clock Input PIN DESCRIPTIONS PIN CONFIGURATION Top View SO, TSSOP TYPICAL CONNECTION CIRCUIT Bit 1 Bit 2 Bit 3 Bit 4 Bit 5 Bit 6 Bit 7 Bit 8 Bit 9 Bit 10 Bit 11 Bit 12 NC NC CLK +V D DGND NC +V A BYP I OUT I OUT AGND BW FSA REF IN INT/EXT PD 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 DAC902 Current Sources LSB Switches Segmented MSB Switches +1.24V Ref. Latches 12-Bit Data Input D11.......D0 DAC902 FSA BW +V D +V A R SET AGND CLK DGND REF IN 0.1 µF INT/EXT I OUT I OUT BYP PD 20pF 50 Ω 50 Ω 20pF 1:1 0.1 µF 0.1 µF +5V +5V |
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