DATASHEET ISL22313 FN6421 2 Rev 1.00 Single Digitally Controlled Potentiometer (XDCP) Low Noise, Low Power, I C August 18, 2016 Bus, 256 Taps The ISL22313 integrates a single digitally controlled Features potentiometer (DCP), control logic and non-volatile memory 256 resistor taps on a monolithic CMOS integrated circuit. 2 I C serial interface The digitally controlled potentiometer is implemented with a - Two address pins, up to four devices per bus combination of resistor elements and CMOS switches. The position of the wipers are controlled by the user through the Non-volatile EEPROM storage of wiper position 2 I C bus interface. The potentiometer has an associated 14 General Purpose non-volatile registers volatile Wiper Register (WR) and a non-volatile Initial Value High reliability Register (IVR) that can be directly written to and read by the user. The contents of the WR control the position of the - Endurance: 1,000,000 data changes per bit per register wiper. At power up the device recalls the contents of the - Register data retention: 50 years T +55C DCPs IVR to the WR. Wiper resistance: 70 typical 1mA The ISL22313 also has 14 general purpose non-volatile Standby current <2.5A max registers that can be used as storage of lookup table for Shutdown current <2.5A max multiple wiper position or any other valuable information. Dual power supply The ISL22313 features a dual supply, that is beneficial for - VCC = 2.25V to 5.5V applications requiring a bipolar range for DCP terminals - V- = -2.25V to -5.5V between V- and VCC. DCP terminal voltage from V- to VCC The DCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of 10k 50k or 100k total resistance applications including control, parameter adjustments, and Extended industrial temperature range: -40 to +125C signal processing. 10 Lead MSOP Pinout ISL22313 Pb-free plus anneal product (RoHS compliant) (10 LD MSOP) TOP VIEW O 10 SCL 1 VCC SDA 2 RH 9 A1 RW 3 8 A0 7 4 RL V- GND 5 6 FN6421 Rev 1.00 Page 1 of 15 August 18, 2016ISL22313 Ordering Information PART RESISTANCE TEMP. NUMBER PART OPTION RANGE PACKAGE (Notes 1, 2) MARKING (k ) (C) (RoHS COMPLIANT) PKG. DWG. ISL22313TFU10Z (No longer 313TZ 100 -40 to +125 10 Ld MSOP M10.118 available, recommended replacement: ISL22313UFU10Z) ISL22313UFU10Z 313UZ 50 -40 to +125 10 Ld MSOP M10.118 ISL22313WFU10Z 313WZ 10 -40 to +125 10 Ld MSOP M10.118 NOTES: 1. Intersil Pb-free plus anneal products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate termination finish, which are RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 2. Add -TK suffix for 1,000 Tape and Reel option Block Diagram V V- CC RH SCL POWER UP SDA INTERFACE, 2 I C CONTROL WR A1 INTERFACE AND VOLATILE A0 STATUS REGISTER LOGIC AND WIPER CONTROL CIRCUITRY NON-VOLATILE REGISTERS RL RW GND Pin Descriptions MSOP PIN SYMBOL DESCRIPTION 2 1 SCL Open drain I C interface clock input 2 2 SDA Open drain Serial data I/O for the I C interface 2 3 A1 Device address input for the I C interface 2 4 A0 Device address input for the I C interface 5 V- Negative supply pin 6 GND Device ground pin 7 RL Low terminal of DCP 8 RW Wiper terminal of DCP 9 RH High terminal of DCP 10 VCC Power supply pin FN6421 Rev 1.00 Page 2 of 15 August 18, 2016