ISL95711 Digitally Controlled Potentiometer (XDCP) Data Sheet September 5, 2006 FN8241.3 Terminal Voltage 2.7V or 5V, 128 Taps Features 2 I C Serial Interface Non-Volatile Solid-State Potentiometer The Intersil ISL95711 is a digitally controlled potentiometer 2 I C Serial Interface with Hardwire Slave Address Allows (XDCP). The device consists of a resistor array, wiper Up to Four Devices per bus switches, a control section, and nonvolatile memory. The 2 DCP Terminal Voltage, from V- to V wiper position is controlled by a I C interface. CC 128 Wiper Tap Points The potentiometer is implemented by a resistor array - Wiper position can be stored in nonvolatile memory and composed of 127 resistive elements and a wiper switching recalled on power-up network. The wiper terminal can be connected to either end of the resistor array or at any one of the Tap Positions in 127 Resistive Elements between, providing 128 steps of resolution between R and L - Typical Rtotal tempco 50ppm/C R . The position of the wiper is determined by the value H - Ratiometric Tempco 4ppm/C assigned to the volatile Wiper Register (WR). This register - End to end resistance range 20% has an associated non-volatile Initial Value Register (IVR). Low Power CMOS The value stored in the IVR will be written into the WR at - Standby current, 1A power-up, allowing wiper position recall after power interruption. The WR and the IVR can be directly written to - Active current, 200A max 2 and read from using standard I C interface protocol. The -V = 2.7V to 5.5V CC device is available in either a 10k or 50k version. - V- = -2.7V to -5.5V The device can be used as a three-terminal potentiometer or High Reliability as a two-terminal variable resistor in a wide variety of - Endurance, 200,000 data changes per bit applications including: - Register data retention, 50 years Industrial and automotive control Values = 10k, 50k R TOTAL Parameter and bias adjustments Package -10 Ld MSOP Amplifier bias and control - Pb-free plus anneal (RoHS compliant) Pinout ISL95711 (10 LD MSOP) TOP VIEW SCL SDA 1 10 V V- 2 9 CC GND R 3 8 L R A1 4 7 W R A0 6 H 5 Ordering Information PART NUMBER (Notes 1, 2) PART MARKING RESISTANCE OPTION () TEMP. RANGE (C) PACKAGE (Pb-Free) PKG. DWG. ISL95711WIU10Z AKO 10k -40 to +85 10 Ld MSOP M10.118 ISL95711UIU10Z AKQ 50k -40 to +85 10 Ld MSOP M10.118 NOTES: 1. Add -T suffix for tape and reel. 2. 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. CAUTION: These devices are sensitive to electrostatic discharge follow proper IC Handling Procedures. 1 1-888-INTERSIL or 1-888-468-3774 Intersil (and design) is a registered trademark of Intersil Americas Inc. XDCP is a trademark of Intersil, Inc. Copyright Intersil Americas Inc. 2005-2006. All Rights Reserved All other trademarks mentioned are the property of their respective owners.ISL95711 Block Diagram 7-BIT SDA WIPER R 127 H REGISTER SCL V GND (VOLATILE) CC 126 125 SDA R H SCL 7-BIT 124 CONTROL NONVOLATILE R AND W MEMORY ONE A1 MEMORY OF TRANSFER RESISTOR GATES 128 ARRAY A0 DECODER R L 2 STORE AND V- 1 RECALL CONTROL SIMPLE BLOCK DIAGRAM CIRCUITRY 0 R A1 L SLAVE R ADDRESS W A0 DECODE DETAILED BLOCK DIAGRAM Pin Descriptions PIN NUMBER SYMBOL DESCRIPTION 2 1 SDA Open drain Data I/O for I C serial interface 2 V- Negative supply voltage for the potentiometer wiper control 3 GND Ground 2 4 A1 A1 and A0 are address select pins used to set the slave address for the I C serial interface 2 5 A0 A1 and A0 are address select pins used to set the slave address for the I C serial interface 6R A fixed terminal for one end of the potentiometer resistor. H 7R The wiper terminal which is equivalent to the movable terminal of a potentiometer. W 8R A fixed terminal for one end of the potentiometer resistor. L 9V Positive logic supply voltage CC 2 10 SCL Clock input for the I C serial interface FN8241.3 2 September 5, 2006