Microchip Technology MCP4452-104E/ST

Description
The MCP443X/5X is a family of 7/8-bit volatile quad digital potentiometers (DPOTs) with an I²C interface. These devices offer a choice of four resistor network resistances (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ) and two configuration options (potentiometer or rheostat). The 7-bit devices have a 128-resistor network with 129 taps, while the 8-bit devices have a 256-resistor network with 257 taps.

Features
Quad resistor network
Potentiometer or rheostat configuration options
Resistor network resolution:
7-bit: 128 resistors (129 taps)
8-bit: 256 resistors (257 taps)
Four 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°-70°C)
Ratiometric (potentiometer): 15 ppm typical
I²C serial interface support:
100 kHz
400 kHz
3.4 MHz
Serial protocol allows high-speed read/write to wiper
Resistor network terminal disconnect feature via Terminal Control (TCON) register
Reset input pin
Brown-out reset protection: 1.5 V typical
Serial interface inactive current: 2.5 µA typical
High-voltage tolerant digital inputs up to 12.5 V
Supports split rail applications
Internal weak pull-up on all digital inputs, except SCL and SDA
Wide operating voltage:
2.7 V to 5.5 V (device characteristics specified)
1.8 V to 5.5 V (device operation)
Wide bandwidth (-3 dB) operation: 2 MHz typical for 5.0 kΩ device
Extended temperature range: -40°C to 125°C
Three package types:
4x4 QFN-20
TSSOP-20
TSSOP-14

Applications
Audio volume control
LED brightness control
Motor speed control
Sensor calibration
Programmable gain amplifiers
Voltage dividers
Current limiters