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MAX550BD Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX550BD Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 12 page Low-Power, +2.5V to +5.5V, 8-Bit Voltage-Output DAC in µMAX _______________________________________________________________________________________ 9 X = Don’t Care Table 3. Example Input Word Table 4. Analog Output vs. Code Note: 1LSB = VREF x 2-8 = VREF(1/256) ANALOG OUTPUT = +VREF(I/256), where I = Integer Value of Digital Input and wake up DAC (if previously powered down) X = Don’t Care Table 2. Serial-Interface Programming Commands COMMAND CONTROL BYTE DATA BYTE Loaded First Loaded Last UB1 UB2 UB3 C2 C1 C0 AB1 AB2 D7 D6 D5 D4 D3 D2 D1 D0 X On CS’s rising edge, wake up DAC. DAC register unchanged. X X X X X 1 X X X X X X X X X X Unassigned command X X X 0 1 0 0 1 8-bit DAC data On CS’s rising edge, load DAC register. Wake up DAC (if previously powered down). X X X 1 0 0 0 1 X On CS’s rising edge, power down DAC. DAC output goes to zero. DAC register unchanged. X X X 1 1 0 0 1 8-bit DAC data On CS’s rising edge, power down DAC and update DAC register. DAC output goes to zero. 1 0 0 0 0 X X X X X X X X X X X X X X X X X 0 0 0 0 0 0 1 1 0 0 1 0 X X X D0 D1 D2 D3 D4 D5 D6 D7 AB2 AB1 C0 C1 C2 UB3 UB2 UB1 Loaded First Loaded Last 0 0 0 0 0 0 0 0 0 0 +VREF x (1/256) 1 0 0 0 0 0 0 0 +VREF x (127/256) 1 1 1 1 1 1 1 0 +VREF x (128/256) = +VREF/2 0 0 0 0 0 0 0 1 +VREF x (129/256) 1 0 0 0 0 0 0 1 +VREF x (255/256) 1 1 1 1 1 1 1 1 ANALOG OUTPUT (V) D0 D1 D2 D3 D4 D5 D6 D7 DAC REGISTER CONTENTS |
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