Microchip Technology MCP4142T-502E/SN

Description
The MCP41XX and MCP42XX devices are a range of digital potentiometers with a SPI interface. They offer a variety of options, including single or dual resistor networks, potentiometer or rheostat configurations, and resistor network resolutions of 7-bit (128 resistors) or 8-bit (256 resistors). The devices also feature low wiper resistance (750Ω typical), low tempco (50 ppm typical for rheostat, 15 ppm typical for potentiometer), and a wide operating voltage range (2.7V to 5.5V).

Features
7/8-bit single/dual SPI digital POT with non-volatile memory
Single or dual resistor network options
Potentiometer or rheostat configuration options
Resistor network resolution:
7-bit: 128 resistors (129 steps)
8-bit: 256 resistors (257 steps)
RAB resistances options of:
5kΩ
10 kΩ
50 ΚΩ
100kΩ
Zero-scale to full-scale wiper operation
Low wiper resistance: 750Ω (typical)
Low tempco:
Absolute (Rheostat): 50 ppm typical (0°C to 70°C)
Ratiometric (Potentiometer): 15 ppm typical
Non-volatile memory:
Automatic recall of saved wiper setting
WiperLock™ Technology
SPI serial interface (10 MHz, modes 0,0 & 1,1):
High-speed read/writes to wiper registers
Read/write to data EEPROM registers
Serially enabled EEPROM write protect
SDI/SDO multiplexing (MCP41X1 only)
Resistor network terminal disconnect feature via:
Shutdown pin (SHDN)
Terminal Control (TCON) Register
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
Wide operating voltage:
2.7V to 5.5V - Device Characteristics Specified
1.8V to 5.5V - Device Operation
Wide bandwidth (-3dB) operation: 2 MHz (typical) for 5.0 kΩ device
Extended temperature range (-40°C to 125°C)

Applications
Audio volume control
LED brightness control
Motor speed control
Sensor calibration
Voltage and current adjustment
Programmable gain amplifiers
Active filters
Power management