MCP402XEV Microchip Technology, MCP402XEV Datasheet - Page 13

• Manufacturer Part Number: MCP402XEV
• Description: BOARD EVAL FOR MCP402X
• Manufacturer: Microchip Technology

Specifications of MCP402XEV

• Main Purpose: Digital Potentiometer
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP4021
• Primary Attributes: 1 Single Pot, 10 kOhm, 64 Tap, Non Volatile
• Secondary Attributes: 2.7 ~ 5.5 V, 150 ppm/°C
• Processor To Be Evaluated: MCP402X
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

© 2005 Microchip Technology Inc.
2.2.3
The MCP4023/13-XXXI/OT is a 6-pin, grounded digital potentiometer with terminals A
and W available on the device pins. Footprint U2 supports the SOT-23-6 package.
Populating R2 will create a voltage divider with a transfer function illustrated in
Equation 2-2.
EQUATION 2-2:
2.2.4
The MCP4024/14-xxxI/OT is a 5-pin, grounded digital rheostat with the W terminals
available on the device pins. Footprint U2 supports the SOT-23-5 package. An “INCR”
command moves the wiper toward terminal A, thus causing the resistance across the
rheostat to increase. A “DECR” command moves the wiper toward terminal B, thus
causing the resistance across the rheostat to decrease.
Note 1:
Note 1:
2:
3:
2:
3:
Evaluating the MCP4023 and MCP4013
Evaluating the MCP4024 and MCP4014
DO NOT populate U1 if using U2.
The included MCP4021 digital potentiometer samples could be used to
evaluate the MCP4023 simply by shorting terminal B to GND.
The MCP4013 has high-voltage tolerant pins and, therefore, accepts
high-voltage Increment and Decrement commands. Since this device is
nonvolatile, the WiperLock™ Technology feature is not present.
DO NOT populate U1 if using U2.
The included MCP4021 digital potentiometer samples could be used to
evaluate the MCP4024 simply by not populating R
float and by shorting terminal B to GND.
The MCP4014 has high-voltage tolerant pins and, therefore, accepts
high-voltage Increment and Decrement commands. Since this device is
nonvolatile, the WiperLock™ Technology feature is not present.
GROUNDED POTENTIOMETER – VOLTAGE DIVIDER
CALCULATION
V
Where:
wiper
d = the wiper setting (0 to 63)
=
------------------------- -
R2
V
DD
Installation and Operation
+
R
R
nom
wb
=
5.0V
---------------------------------------------- -
2.5k
d 10k 63
+
10k
2
, letting terminal A
DS51546B-page 9