Features
- Solid-State Potentiometer
- 3-Wire Serial Up/Down Interface
- 100 Wiper Tap Points
- Wiper Position Stored in Nonvolatile Memory and Recalled on Power-up
- 99 Resistive Elements
- Temperature Compensated
- End-to-end Resistance Range ±20%
- Low Power CMOS
- VCC = 2.7V to 5.5V, and 5V ±10%
- Standby Current <5µA
- High Reliability
- Endurance, 100,000 Data Changes per Bit
- Register Data Retention, 100 years
- RTOTAL Values = 10kΩ, 50kΩ, 100kΩ
- Packages
- 8 Ld SOIC, TSSOP, and MSOP
- Pb-Free (RoHS Compliant)
Description
The X9317 is a digitally controlled potentiometer (XDCP™). The device consists of a resistor array, wiper switches, a control section, and nonvolatile memory. The wiper position is controlled by a 3-wire interface. The potentiometer is implemented by a resistor array composed of 99 resistive elements and a wiper switching network. Between each element and at either end are tap points accessible to the wiper terminal. The position of the wiper element is controlled by the CS, U/D, and INC inputs. The position of the wiper can be stored in nonvolatile memory and then be recalled upon a subsequent power-up operation. The device can be used as a three-terminal potentiometer for voltage control or as a two-terminal variable resistor for current control in a wide variety of applications.
Parameters
| Attributes | Value |
|---|---|
| Resistance Taper | Linear |
| Taps (#) | 100 |
| Resistance Options (kΩ) | 10, 50 |
| Channels (#) | 1 |
| Interface | 3-Wire (Up/Down) |
| Memory Type | Nonvolatile |
| Supply Voltage Vcc Range | 2.7 to 5.5 |
| Supply Current Icc (µA) | 5 |
| Single Supply Voltage Range (V) | 5.5 |
| Wiper Current (mA) | 4.4 |
| Wiper Resistance (ohms) | 200 |
| VL Terminal Voltage (Max) (V) | 5.5 |
| End-to-End Temperature Coefficient (ppm/°C) | 300 |
| Middlepoint Ratiometric Tempco | 20 |
| Qualification Level | Standard |
Applications
- LCD Bias Control
- DC Bias Adjustment
- Gain and Offset Trim
- Laser Diode Bias Control
- Voltage Regulator Output Control