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Part Number: MCP4021

 

 

 

 

Description: The MCP4021/2/3/4 devices are non-volatile, 6-bit digital potentiometers that can be configured as eit...


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MCP4021 General Description


The MCP4021/2/3/4 devices are non-volatile, 6-bit digital potentiometers that can be configured as either a potentiometer or rheostat. The wiper setting is controlled through a simple Up/Down (U/D) serial interface. These device’s implement Microchip’s WiperLock technolog , which allows application-specific calibration settings to be secured in the EEPROM without requiring the use of an additional write-protect pin.

MCP4021 Maximum Ratings

Absolute Maximum Ratings †
VDD.................................................................................. 6.5V
CS and U/D inputs w.r.t VSS............................. -0.3V to 12.5V
A, B and W terminals w.r.t VSS................ -0.3V to VDD + 0.3V
Current at Input Pins .................................................±10 mA
Current at Supply Pins ...............................................±10 mA
Current at Potentiometer Pins ...................................±2.5 mA
Storage temperature .................................-65°C to +150°C
Ambient temp. with power applied ............-55°C to +125°C
ESD protection on all pins ........... 4 kV (HBM), 400V (MM)
Maximum Junction Temperature (TJ) . .........................+150°C

† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

MCP4021 Features

` Non-volatile Digital Potentiometer in SOT-23, SOIC, MSOP and DFN packages
` 64 Taps: 63 Resistors with Taps to terminal A and terminal B
` Simple Up/Down (U/D) Protocol
` Power-on Recall of Saved Wiper Setting
` Resistance Values: 2.1 k, 5 k, 10 k or 50 k
` Low Tempco:
- Absolute (Rheostat): 50 ppm (0°C to 70°C typ.)
- Ratiometric (Potentiometer): 10 ppm (typ.)
` Low Wiper Resistance: 75 (typ.)
` WiperLockTM Technology to Secure the wiper setting in non-volatile memory (EEPROM)
` High-Voltage Tolerant Digital Inputs: Up to 12.5V
` Low-Power Operation: 1 A Max Static Current
` Wide Operating Voltage: 2.7V to 5.5V
` Extended Temperature Range: -40°C to +125°C

MCP4021 Typical Application

· Power Supply Trim and Calibration
· Mechanical Potentiometer Replacement in New Designs
· Instrumentation, Offset and Gain Adjust

MCP4021 Connection Diagram

MCP4021 Connection Diagram

MCP4021 datasheet

MCP4021
PDF/DataSheet Download

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