DS1848

www.DataSheet4U.com DS1848 Dual Temperature-Controlled NV Variable Resistor & Memory PIN ASSIGNMENT SDA SCL A0 A1 A2 WP GND www.maxim-ic.com FEATURES § § § § § § § § § § Two linear taper, temperature-controlled variable resistors DS1848-050 - One 50kW, 256 position - One 10kW, 256 position DS1848-010 - Two 10kW, 256 position Resistor settings changeable every 2°C Access to temperature data and device control via a 2-wire interface Operates from 3V or 5V supplies Packaging: 14-pin TSSOP, 16-ball CSBGA Operating temperature: -40ºC to +95ºC Programming temperature: 0ºC to +70ºC 128 bytes of user EEPROM 1 2 3 4 5 6 7 14 13 12 11 10 9 8 Vcc H0 NC H1 L1 NC L0 14-Pin TSSOP (173-mil) Top View A B C D 2 (4mm 3 x 4mm) 4 16-Ball1 CSBGA DESCRIPTION The DS1848 Dual Temperature-Controlled Nonvolatile (NV) Variable Resistor consists of two 256position linear, variable resistors. The DS1848-050 consists of one 10kW and one 50kW, while the DS1848-010 consists of two 10kW resistors; both incorporate a direct-to-digital temperature sensor. The device provides an ideal method for setting and temperature-compensating bias voltages and currents in control applications using a minimum of circuitry. The variable resistors settings are stored in EEPROM memory and can be accessed over the industry standard 2-wire serial bus. The value of each variable resistor is determined by a temperature-addressed look-up table, which can assign a unique value to each resistor for every 2°C increment over ...