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MAX5481 Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAX5481 Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 21 page 10-Bit, Nonvolatile, Linear-Taper Digital Potentiometers _______________________________________________________________________________________ 9 Pin Description PIN TQFN TSSOP NAME FUNCTION 112H High Terminal 211W Wiper Terminal 310L Low Terminal 4–7, 15 7, 8, 9, 13 N.C. No Connection. Not internally connected. 8, 16 14 VSS Negative Power-Supply Input. For single-supply operation, connect VSS to GND. For dual- supply operation, -2.5V ≤ VSS ≤ -0.2V as long as (VDD - VSS) ≤ +5.25V. Bypass VSS to GND with a 0.1µF ceramic capacitor as close to the device as possible. 96 SPI/UD Interface-Mode Select. Select serial SPI interface when SPI/UD = 1. Select serial up/down interface when SPI/UD = 0. Serial SPI Interface Data Input (SPI/UD = 1) 10 5 DIN(U/D) Up/Down Control Input (SPI/UD = 0). With DIN(U/D) low, a high-to-low SCLK(INC) transition decrements the wiper position. With DIN(U/D) high, a high-to-low SCLK(INC) transition increments the wiper position. Serial SPI Interface Clock Input (SPI/UD = 1) 11 4 SCLK(INC) Wiper-Increment Control Input (SPI/UD = 0). With CS low, the wiper position moves in the direction determined by the state of DIN(U/D) on a high-to-low transition. 12 3 CS Active-Low Digital Input Chip Select 13 2 GND Ground 14 1 VDD Positive Power-Supply Input (+2.7V ≤ VDD ≤ +5.25V). Bypass VDD to GND with a 0.1µF ceramic capacitor as close to the device as possible. EP — EP Exposed Pad. Externally connect EP to VSS or leave unconnected. (MAX5481/MAX5482 Voltage-Dividers) |
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