Microchip Technology MCP4442-103E/ST

Description
The MCP444X/446X is a 7/8-bit quad I²C digital potentiometer with nonvolatile memory. It offers both potentiometer and rheostat configuration options, with a resistor network resolution of 128 resistors (129 taps) for 7-bit devices and 256 resistors (257 taps) for 8-bit devices. The RAB resistance options include 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.

Features
Quad resistor network
Potentiometer or rheostat configuration options
Resistor network resolution:
7-bit: 128 resistors (129 taps)
8-bit: 256 resistors (257 taps)
RAB resistance options:
5 kΩ
10 kΩ
50 kΩ
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
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/disabled
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 μA 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 kΩ device
Extended temperature range: -40°C to 125°C
Package types: 4x4 QFN-20, TSSOP-20, and TSSOP-14

Applications
Audio volume control
LED brightness control
Motor speed control
Sensor calibration
Programmable gain amplifiers
Voltage dividers
Current limiters
Battery management
Power supply regulation