SNLS643C March 2019 – April 2024 DS90UB953A-Q1
PRODUCTION DATA
The IDX pin configures the control interface to one of two possible device addresses—either the 1.8V or 3.3V referenced I2C address. A pullup resistor and a pulldown resistor must be used to set the appropriate voltage on the IDX input pin. The IDX resistor divider must be referred to Pin #25 (after the ferrite filter on the DS90UB953A-Q1 pin side).
IDX | VTARGET VOLTAGE RANGE | VIDX TARGET VOLTAGE | SUGGESTED STRAP RESISTORS (1% TOL) | I2C 8-BIT ADDRESS | I2C 7-BIT ADDRESS | V(I2C) (I2C I/O VOLTAGE) | |||
---|---|---|---|---|---|---|---|---|---|
RATIO MIN | RATIO TYP | RATIO MAX | VVDD = 1.8V | RHIGH (kΩ ) | RLOW (kΩ ) | ||||
1 | 0 | 0 | 0.131 x V(VDD18) | 0 | Open | 40.2 | 0x30 | 0x18 | 1.8V |
2 | 0.178 x V(VDD18) | 0.214 x V(VDD18) | 0.256 x V(VDD18) | 0.385 | 180 | 47.5 | 0x32 | 0x19 | 1.8V |
3 | 0.537 x V(VDD18) | 0.564 x V(VDD18) | 0.591 x V(VDD18) | 1.015 | 82.5 | 102 | 0x30 | 0x18 | 3.3V |
4 | 0.652 x V(VDD18) | 0.679 x V(VDD18) | 0.706 x V(VDD18) | 1.223 | 68.1 | 137 | 0x32 | 0x19 | 3.3V |