Microchip Technology MCP4351-103E/ST

Description
The MCP433X/435X is a family of 7/8-bit quad SPI digital potentiometers with volatile memory. These devices feature a quad resistor network with potentiometer or rheostat configuration options. The resistor network resolution is either 7-bit (128 resistors, 129 taps) or 8-bit (256 resistors, 257 taps). The RAB resistances options are 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
The MCP433X/435X devices offer zero scale to full scale wiper operation and low wiper resistance (75 Ω typical). They have a low tempco of 50 ppm typical (absolute, rheostat) and 15 ppm typical (ratiometric, potentiometer). The devices communicate via a high-speed SPI serial interface (10 MHz, Modes 0,0 and 1,1) that enables fast read/writes to wiper registers.
The MCP433X/435X devices include a resistor network terminal disconnect feature via the Terminal Control (TCON) register. They also have a reset input pin, brown-out reset protection (1.5V typical), and serial interface inactive current (2.5 μA typical). The devices have high-voltage tolerant digital inputs (up to 12.5V) and support split rail applications.

Features
Quad resistor network
Potentiometer or rheostat configuration options
7-bit or 8-bit resistor network resolution
RAB resistances options of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ
Zero scale to full scale wiper operation
Low wiper resistance (75 Ω typical)
Low tempco:
Absolute (rheostat): 50 ppm typical (0°C to 70°C)
Ratiometric (potentiometer): 15 ppm typical
SPI serial interface (10 MHz, Modes 0,0 and 1,1)
Resistor network terminal disconnect feature via Terminal Control (TCON) register
Reset input pin
Brown-out reset protection (1.5V typical)
Serial interface inactive current (2.5 μA 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 (-3 dB) 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
Programmable gain amplifiers
Voltage dividers
Current limiters
Test and measurement equipment