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TLV5638MDREP Datasheet(PDF) 13 Page - Texas Instruments |
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TLV5638MDREP Datasheet(HTML) 13 Page - Texas Instruments |
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13 / 23 page  TLV5638EP 2.7V TO 5.5V LOW POWER DUAL 12BIT DIGITALTOANALOG CONVERTER WITH INTERNAL REFERENCE AND POWER DOWN SGLS130B − JULY 2002 − REVISED DECEMBER 2003 13 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 APPLICATION INFORMATION Examples of operation: D Set DAC A output, select fast mode, select internal reference at 2.048 V: 1. Set reference voltage to 2.048 V (CONTROL register): D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 1 0 2. Write new DAC A value and update DAC A output: D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 1 0 0 New DAC A output value The DAC A output is updated on the rising clock edge after D0 is sampled. To output data consecutively using the same DAC configuration, it is not necessary to program the CONTROL register again. D Set DAC B output, select fast mode, select external reference: 3. Select external reference (CONTROL register): D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 4. Write new DAC B value to BUFFER and update DAC B output: D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 1 0 0 New BUFFER content and DAC B output value The DAC A output is updated on the rising clock edge after D0 is sampled. To output data consecutively using the same DAC configuration, it is not necessary to program the CONTROL register again. D Set DAC A value, set DAC B value, update both simultaneously, select slow mode, select internal reference at 1.024 V: 1. Set reference voltage to 1.024 V (CONTROL register): D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 2. Write data for DAC B to BUFFER: D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 0 0 0 1 New DAC B value 3. Write new DAC A value and update DAC A and B simultaneously: D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 1 0 0 0 New DAC A value |
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