DATASHEET ISL22343 FN6423 Data Sheet August 17, 2015 2 Rev 2.00 Quad Digitally Controlled Potentiometer (XDCP) Low Noise, Low Power, I C August 17, 2015 Bus, 256 Taps The ISL22343 integrates four digitally controlled Features potentiometers (DCP), control logic and non-volatile memory Four potentiometers in one package on a monolithic CMOS integrated circuit. 256 resistor taps The digitally controlled potentiometer is implemented with a 2 combination of resistor elements and CMOS switches. The I C serial interface position of the wipers are controlled by the user through the - Three address pins, up to eight devices per bus 2 I C bus interface. The potentiometer has an associated Non-volatile EEPROM storage of wiper position volatile Wiper Register (WRi) and a non-volatile Initial Value 11 General Purpose non-volatile registers Register (IVRi) that can be directly written to and read by the user. The contents of the WRi control the position of the High reliability corresponding wiper. At power up the device recalls the - Endurance: 1,000,000 data changes per bit per register contents of the DCPs IVRi to the correspondent WRi. - Register data retention: 50 years T 55C The ISL22343 also has 11 general purpose non-volatile Wiper resistance: 70 typical 1mA registers that can be used as storage of lookup table for Standby current <4A max multiple wiper position or any other valuable information. Shutdown current <4A max The ISL22343 features a dual supply, that is beneficial for applications requiring a bipolar range for DCP terminals Dual power supply between V- and VCC. - VCC = 2.25V to 5.5V - V- = -2.25V to -5.5V Each DCP can be used as three-terminal potentiometers or as two-terminal variable resistors in a wide variety of 10k 50k or 100k total resistance applications including control, parameter adjustments, and Extended industrial temperature range: -40C to +125C signal processing. 20 Ld TSSOP or 20 Ld QFN Pb-free (RoHS compliant) Ordering Information RESISTANCE TEMP. PART NUMBER PART OPTION RANGE PACKAGE PKG. (Notes 1, 2) MARKING (k ) (C) (Pb-free) DWG. ISL22343TFV20Z 22343 TFVZ 100 -40 to +125 20 Ld TSSOP M20.173 (No longer available, recommended replacement: ISL22343WFR20Z-TK) ISL22343TFR20Z 22343 TFRZ 100 -40 to +125 20 Ld QFN L20.5x5 (No longer available, recommended replacement: ISL22343WFR20Z-TK ISL22343UFV20Z 22343 UFVZ 50 -40 to +125 20 Ld TSSOP M20.173 (No longer available, recommended replacement: ISL22343WFR20Z-TK ISL22343UFR20Z 22343 UFRZ 50 -40 to +125 20 Ld QFN L20.5x5 (No longer available, recommended replacement: ISL22343WFR20Z-TK ISL22343WFV20Z 22343 WFVZ 10 -40 to +125 20 Ld TSSOP M20.173 ISL22343WFR20Z 22343 WFRZ 10 -40 to +125 20 Ld QFN L20.5x5 NOTES: 1. These Intersil Pb-free plastic packaged products employ special Pb-free material sets molding compounds/die attach materials and 100% matte tin plate PLUS ANNEAL - e3 termination finish, which is 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 tape and reel. Please refer to TB347 for details on reel specifications FN6423 Rev 2.00 Page 1 of 19 August 17, 2015ISL22343 Block Diagram VCC V- RH3 WR3 RW3 SCL POWER-UP, SDA RL3 CONTROL 2 I C RH2 A0 AND INTERFACE STATUS A1 WR2 RW2 LOGIC A2 RL2 RH1 WR1 RW1 RL1 NON-VOLATILE RH0 REGISTERS WR0 RW0 RL0 GND Pinouts ISL22343 ISL22343 (20 LEAD TSSOP) (20 LEAD QFN) TOP VIEW TOP VIEW RH3 1 20 RW0 RL3 2 19 RL0 20 19 18 17 16 RW3 3 18 RH0 RW3 1 15 V- A2 4 17 V- 2 14 A2 VCC SCL 5 16 VCC SDA 6 15 A1 3 13 SCL A1 GND 7 14 A0 4 12 A0 SDA RW2 8 13 RH1 5 11 RL2 9 12 RL1 RH1 GND RH2 10 11 RW1 67 8 9 10 FN6423 Rev 2.00 Page 2 of 19 August 17, 2015 RW2 RL3 RL2 RH3 RH2 RW0 RW1 RL0 RL1 RH0