DS3501 Rev 0 1/07 2 High-Voltage, NV, I C POT with Temp Sensor and Lookup Table General Description Features The DS3501 is a 7-bit, nonvolatile (NV) digital poten- 128 Wiper Tap Points tiometer featuring an output voltage range of up to 15.5V. Full-Scale Resistance: 10k 2 Programming is accomplished by an I C-compatible On-Chip Temperature Sensor and ADC interface, which can operate at speeds of up to 400kHz. External voltages are applied at the RL and RH inputs to 36-Byte Lookup Table (LUT) define the lowest and highest potentiometer outputs. 2 I C-Compatible Serial Interface The DS3501 contains an on-chip temperature sensor Address Pins Allow Up to Four DS3501s to Share and associated analog-to-digital converter (ADC). The 2 the Same I C Bus ADC output addresses a 36-byte NV lookup table Digital Operating Voltage: 2.7V to 5.5V (LUT). The LUT output can drive the pot directly or be added to an NV initial-value register (IVR) to drive the Analog Operating Voltage: 4.5V to 15.5V pot. This flexible LUT-based architecture allows the Operating Temperature: -40C to +100C DS3501 to provide a temperature-compensated poten- Pin and Software Compatible with ISL95311 tiometer output with arbitrary slope. (Default Mode) Applications 10-Pin SOP Package TFT-LCD VCOM Calibration Ordering Information Linear and Nonlinear Compensation Instrumentation and Industrial Controls PART TEMP RANGE PIN-PACKAGE DS3501U+ -40C to +100C 10 SOP Mechanical POT Replacement DS3501U+T&R -40C to +100C 10 SOP Optical Transceivers +Denotes a lead-free package. Pin Configuration and Typical Operating Circuit appear at T&R denotes tape-and-reel. end of data sheet. Functional Diagram RH 127 SDA VOLATILE SCL WIPER REGISTER 126 125 DS3501 DECODER LEVEL SHIFTER 36-BYTE 2 NV IVR LUT NV MEMORY 1 CONTROL CIRCUITRY 0 A1 AND ADDRESS DECODE A0 RL TEMP SENSOR AND ADC RW Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com.2 High-Voltage, NV, I C POT with Temp Sensor and Lookup Table ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to GND ...............-0.5V to +6.0V Operating Temperature Range .........................-40C to +100C CC Voltage Range on V+ Relative to GND ..................-0.5V to +17V Programming Temperature Range .........................0C to +70C Voltage Range on SDA, SCL, A0, A1 Storage Temperature Range .............................-55C to +125C Relative to GND..........-0.5V to (V + 0.5V), not to exceed 6.0V Soldering Temperature .......................................See IPC/JEDEC CC Voltage Range on RH, RL, RW...................................-0.5V to V+ J-STD-020 Specification Voltage Range Across RH and RL Pins .....................-0.5V to V+ Maximum RW Current...........................................................1mA Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED OPERATING CONDITIONS (T = -40C to +100C) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Supply Voltage V (Note 1) +2.7 +5.5 V CC V+ Voltage V+ V+ > V +4.5 +15.5 V CC Input Logic 1 0.7 x V CC V V IH (SCL, SDA, A0, A1) V + 0.3 CC Input Logic 0 0.3 x V -0.3 V IL (SCL, SDA, A0, A1) V CC V+ Resistor Inputs (RL, RW, RH) V -0.3 V RES + 0.3 Wiper Current I 1mA WIPER DC ELECTRICAL CHARACTERISTICS (V = +2.7V to +5.5V, T = -40C to +100C, unless otherwise noted.) CC A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS I (Note 2) 2 mA CC V Supply Current CC I (Note 3) 250 350 A CC2 Standby Supply Current I (Note 4) 40 60 A STBY V+ Bias Current I +1 A V+ Inpu t Leakag e (S D A, SC L, A0, A1) I -1 +1 A L Low-Level Output Voltage (SDA) V 3mA sink current 0.0 0.4 V OL I/O Capacitance C 510 pF I/O Power-Up Recall Voltage V (Note 5) 1.6 2.6 V POR Power-Up Memory Recall Delay t (Note 6) 5 ms D Wiper Resistance R V+ = 15.0V 5000 W E nd- to-E nd Re sis tance (RH to RL) R 10 k TOTAL R Tolerance T = +25C -20 +20 % TOTAL A R Temp Co. (Note 7) 200 ppm TOTAL CH, CL, CW Capacitance C 10 pF POT 2 DS3501