Datasheet

4 Digital Potentiometer Design Guide
Low Voltage Applications
Some applications require a low operating voltage. Microchip
offers most of their volatile memory devices specified down
to 1.8V for their digital operation. The analog performance
at this low voltage is not specified, but is characterized. For
many applications this may be acceptable.
Digital Potentiometer Solutions
Devices that Support Low Voltage (1.8V) Operation
Device
Serial Interface Volatile (Vol) Non-Volatile (NV) # RS Resistors Rs Ω (typ.) Zero-Scale/ Full-Scale
(3)
# of Channels WiperLock™ Technology HV Commands Shutdown Mode Configuration Voltage Range # of Pins Packages I
DD max (μA)
(5)
MCP4011
(1)
U/D Vol 63 33.3/79.4/158.7/793.7 Y/Y 1 N Y
(9)
N Pot 1.8V to 5.5V
(6)
8 SOIC, MSOP, DFN 1
MCP4012
(1)
U/D Vol 63 33.3/79.4/158.7/793.7 Y/Y 1 N Y
(9)
N Rheo 1.8V to 5.5V
(6)
6 SOT-23 1
MCP4013
(1)
U/D Vol 63 33.3/79.4/158.7/793.7 Y/Y 1 N Y
(9)
N Pot
(7)
1.8V to 5.5V
(6)
6 SOT-23 1
MCP4014
(1)
U/D Vol 63 33.3/79.4/158.7/793.7 Y/Y 1 N Y
(9)
N Rheo
(7)
1.8V to 5.5V
(6)
5 SOT-23 1
MCP4017
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Rheo 1.8V to 5.5V
(6)
6 SC70 5
MCP4018
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Pot
(7)
1.8V to 5.5V
(6)
6 SC70 5
MCP4019
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Rheo
(7)
1.8V to 5.5V
(6)
5 SC70 5
MCP40D17
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Rheo 1.8V to 5.5V
(6)
6 SC70 5
MCP40D18
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Pot
(7)
1.8V to 5.5V
(6)
6 SC70 5
MCP40D19
(2)
I
2
C Vol 127 39.4/78.7/393.7/787.4 Y/Y 1 N N N Rheo
(7)
1.8V to 5.5V
(6)
5 SC70 5
MCP4131
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 1 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
8 PDIP, SOIC, MSOP, DFN 5
MCP4132
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 1 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
8 PDIP, SOIC, MSOP, DFN 5
MCP4151
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 1 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
8 PDIP, SOIC, MSOP, DFN 5
MCP4152
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 1 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
8 PDIP, SOIC, MSOP, DFN 5
MCP4231
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 2 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
14, 16 PDIP, SOIC, TSSOP, QFN 5
MCP4232
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 2 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
10 MSOP, DFN 5
MCP4251
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 2 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
14, 16 PDIP, SOIC, TSSOP, QFN 5
MCP4252
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 2 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
10 MSOP, DFN 5
MCP4331
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 4 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
20 TSSOP, QFN 5
MCP4332
(2)
SPI Vol 128 39.1/78.1/390.6/781.3 Y/Y 4 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
14 TSSOP 5
MCP4351
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 4 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
20 TSSOP, QFN 5
MCP4352
(2)
SPI Vol 256 19.5/39.1/195.3/390.6 Y/Y 4 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
14 TSSOP 5
MCP4431
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 4 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
20 TSSOP, QFN 5
MCP4432
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 4 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
14 TSSOP 5
MCP4451
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 4 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
20 TSSOP, QFN 5
MCP4452
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 4 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
14 TSSOP 5
MCP4531
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 1 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
8 MSOP, DFN 5
MCP4532
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 1 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
8 MSOP, DFN 5
MCP4551
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 1 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
8 MSOP, DFN 5
MCP4552
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 1 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
8 MSOP, DFN 5
MCP4631
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 2 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
14, 16 TSSOP, QFN 5
MCP4632
(2)
I
2
C Vol 128 39.1/78.1/390.6/781.3 Y/Y 2 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
10 MSOP, DFN 5
MCP4651
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 2 N Y
(9)
Y
(8)
Pot 1.8V to 5.5V
(6)
14, 16 TSSOP, QFN 5
MCP4652
(2)
I
2
C Vol 256 19.5/39.1/195.3/390.6 Y/Y 2 N Y
(9)
Y
(8)
Rheo 1.8V to 5.5V
(6)
10 MSOP, DFN 5
1. Resistor options are: -202 (2.1 k), -502 (5.0 k), -103 (10.0 k), and -503 (50.0 k).
2. Resistor options are: -502 (5.0 k), -103 (10.0 k), 503 (50.0 k), and -104 (100.0 k).
3. Zero-scale allows the wiper to “directly” connect to Terminal B, while full-scale allows the wiper to “directly” connect to Terminal A.
4. There is one R
S resistor between the maximum wiper value and Terminal A.
5. This current is with the serial interface inactive, and not during an EEPROM write cycle (for non-volatile devices).
6. The serial interface has been tested to 1.8V, the device’s analog characteristics (resistor) have been tested from 2.7V to 5.5V. Review the device’s characterization graphs for information on analog performance between
1.8Vand 2.7V.
7. One of the terminal pins (A or B) is internally connected to ground, due to the limitation of the number of pins on the package.
8. Shutdown support via software (TCON register(s)). If device has SHDN pin, software shutdown also fuctions.
9. High voltage command support is for compatibility with the corresponding non-volatile version of the device.
1.8V operational devices are all volatile devices except
for the MCP41010, MCP41050, MCP41100, MCP42010,
MCP42050 and MCP42100 devices.