X9258

Temperature under bias ....................65 to +135
Storage temperature .........................65 to +150
Voltage on SDA, SCL or any address input
with respect to V_SS..................................1V to +7V
Voltage on V+ (referenced to V_SS)....................... 10V
Voltage on V- (referenced to V_SS)........................-10V
(V+) (V-)........................................................... 12V
Any V_H/R_H................................................................V+
Any V_L/R_L.......................................................... VLead
temperature (soldering, 10 seconds)................. 300
I_W (10 seconds)................................................±15mA

Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only; functional operation of the device (at these or any other conditions above those listed in the operational sections of this specification) is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

The X9258 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated circuit.

The X9258 digitally controlled potentiometer is implemented using 255 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the 2-wire bus interface. Each X9258 potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile Data Registers (DR0:DR3) that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array though the switches. Power up recalls the contents of DR0 to the WCR.The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments, and signal processing.