Product Summary:
The Microchip Technology MCP402X family of non-volatile
digital potentiometers combine performance and low-
power consumption in micro-size packaging, making them
ideal for a wide variety of low-power and space-constrained
applications.
The MCP402X devices are non-volatile, 6-bit (64 wiper
steps) digital potentiometers that are programmed (or
reprogrammed) through a simple up/down serial interface.
The MCP402X devices offer a variety of configurations
that simplify design while minimizing cost, package size
and pin count. The MCP4021 device offers a voltage
divider (potentiometer) with all terminals available on pins.
The MCP4022 is a true rheostat, with both nodes of the
resistor available on pins. The MCP4023 device offers a
voltage divider, with one terminal connected to ground.
The MCP4024 device is a rheostat mode device, with
one terminal of the resistor connected to ground. These
devices offer the WiperLock technology, which utilizes
a unique technology that provides the user unlimited
reprogramming and locking of the wiper setting. This
feature is useful for equipment that requires factory
trimming, calibration or recalibration. The MCP402X
family of devices are available with resistor values of
2
kΩ, 5 kΩ, 10 kΩ and 50 kΩ. These devices operate from
a single 2.7V to 5.5V supply and, while operating in the
static state, draw less than 1 A.
The MCP402X allows customers to replace mechanical
potentiometers in their designs, resulting in added
flexibility, in-system programmability and lower lifetime
cost. In addition, engineers will find the performance and
price of the MCP402X family very attractive.
Microchip is offering a comprehensive set of support tools
including application notes, evaluation boards and user’s
guides.
Features:
Non-volatile Memory (EEPROM)
64 taps – 63 resistors
Simple Up/Down protocol
Static Current: 1 A max
Automatic recall of wiper settings on power-up
Resistance values of 2 k, 5 k, 10 k and 50 k
Wide temperature range: -40°C to +125°C
Secure wiper using WiperLock Technology
Micropackages: SOT-23 and 3x2 DFN
Additional Information:
AN219, “Comparing Digital Potentiometers to
Mechanical Potentiometers”, DS00219, 2000
AN691, “Optimizing Digital Potentiometer Circuits to
Reduce Absolute and Temperature Variations”,
DS00691, 2001
AN692 “Using a Digital Potentiometer to Optimize a
Precision Single Supply Photo Detect Circuit”,
DS00692, 2001
AN737 “Using Digital Potentiometers to Build
Adjustable Filter”, DS00737, 2004
MCP4021/22/23/24 - Digital Potentiometer
Product Family