MCP4442-104E/ST Rheostat, 7 bit, 4-channel, 128 step, I2C, 100 kOhm, TSSOP-14

7-Bit Quad I2C Digital POT with Nonvolatile Memory MCP444X

Description The MCP444X devices are non-volatile, 7-bit (129 wiper steps) digital potentiometers with EEPROM and an I2C compatible interface. The MCP444X family is available with end-to-end resistor values of 5KO, 10KO, 50kO and 100KO. These devices offer WiperLock™ Technology which allows the user unlimited reprogramming and locking of the wiper setting. It is useful for equipment that requires factory trimming or recalibration. The MCP444X devices offer a variety of configurations simplifying design while minimizing cost, package size and pin count.

Features - Quad Resistor Network - Potentiometer or Rheostat configuration options - Resistor Network Resolution - 7-bit: 128 Resistors (129 Taps) - RAB Resistances options of: - 5kO, - 10kO, - 50kO, - 100kO - Zero Scale to Full Scale Wiper operation - Low Wiper Resistance: 75 O (typical) - Low Tempco: - Absolute (Rheostat): 50 ppm typical (0°C to 70°C) - Ratiometric (Potentiometer): 15 ppm typical - Nonvolatile Memory - Automatic Recall of Saved Wiper Setting - WiperLock™ Technology - 5 General Purpose Memory Locations - I2C Serial Interface : - 100 kHz, 400 kHz, and 3.4 MHz support - Serial protocol allows: - High-Speed Read/Write to wiper - Read/Write to EEPROM - Write Protect to be enabled/disable - WiperLock to be enabled/disabled - Resistor Network Terminal Disconnect Feature via Terminal Control (TCON) Register - Reset input pin - Write Protect Feature: - Hardware Write Protect (WP) Control pin - Software Write Protect (WP) Configuration bit - Brown-out reset protection (1.5V typical) - Serial Interface Inactive current (2.5 uA typical) - High-Voltage Tolerant Digital Inputs: Up to 12.5V - Supports Split Rail Applications - Internal weak pull-up on all digital inputs (except SCL and SDA) - Wide Operating Voltage: - 2.7V to 5.5V - Device Characteristics Specified - 1.8V to 5.5V - Device Operation - Wide Bandwidth (-3 dB) Operation: - 2 MHz (typical) for 5.0 kO device - Extended temperature range (-40°C to +125°C) - Package Types: 4x4 QFN-20, TSSOP-20 and TSSOP-14