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AN691
| Title |
Title
Optimizing the Digital Potentiometer in Precision Circuits
|
|---|---|
| Name |
Name
AN691
|
| Date |
Date
06/24/2015
|
| Application Categories |
Application Categories
Signal Conditioning & Measurement /
Digital Potentiometer
|
| Product Categories |
Product Categories
Linear Devices /
Linear Integrated Devices
Linear Devices /
Op Amps
Mixed Signal /
Digital Potentiometers
|
| Description |
Description
Mechanical potentiometers are typically used to adjust system reference levels, gain errors and offset errors. Digital potentiometers can be used for the same functions while offering the added capability of digital adjustment control. Devices, such as Microchip?s MCP41XXX and MCP42XXX digital potentiometer families, can be used much like a mechanical potentiometer in that they have three resistive terminals for the single versions (MCP41010, MCP41050, and MCP41100) and six resistive terminals for the dual versions (MCP42010, MCP42050, and MCP42100) as illustrated in Figure 1.
|
Silicon Products
| Title | Product | Title |
|---|---|---|
|
MCP4261
8-Bit Dual Digital POT with NVM and SPI
|
MCP4261 | 8-Bit Dual Digital POT with NVM and SPI |
|
MCP4452
8-Bit Quad Digital POT with I2C™
|
MCP4452 | 8-Bit Quad Digital POT with I2C™ |
|
MCP4661
8-Bit Dual Digital POT with NVM and I2C™
|
MCP4661 | 8-Bit Dual Digital POT with NVM and I2C™ |
|
MCP45HV31
7-Bit Single, +36V (±18V) Digital POT w/I2C™
|
MCP45HV31 | 7-Bit Single, +36V (±18V) Digital POT w/I2C™ |
|
MCP4351
8-Bit Quad Digital POT with SPI
|
MCP4351 | 8-Bit Quad Digital POT with SPI |
|
MCP4632
7-Bit Dual Digital POT with I2C™
|
MCP4632 | 7-Bit Dual Digital POT with I2C™ |
|
MCP4442
7-Bit Quad Digital POT with NVM and I2C™
|
MCP4442 | 7-Bit Quad Digital POT with NVM and I2C™ |
|
MCP4251
8-Bit Dual Digital POT with SPI
|
MCP4251 | 8-Bit Dual Digital POT with SPI |
|
MCP4542
7-Bit Single Digital POT with NVM and I2C™
|
MCP4542 | 7-Bit Single Digital POT with NVM and I2C™ |
|
MCP4462
8-Bit Quad Digital POT with NVM and I2C™
|
MCP4462 | 8-Bit Quad Digital POT with NVM and I2C™ |
|
MCP4361
7-Bit Quad Digital POT with NVM and SPI
|
MCP4361 | 7-Bit Quad Digital POT with NVM and SPI |
|
MCP4241
7-Bit Dual Digital POT with NVM and SPI
|
MCP4241 | 7-Bit Dual Digital POT with NVM and SPI |
|
MCP4023
Low-Cost NVM Digital POT with WiperLock™
|
MCP4023 | Low-Cost NVM Digital POT with WiperLock™ |
|
MCP4017
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP4017 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4631
7-Bit Dual Digital POT with I2C™
|
MCP4631 | 7-Bit Dual Digital POT with I2C™ |
|
MCP42010
8-Bit Dual Digital POT with SPI
|
MCP42010 | 8-Bit Dual Digital POT with SPI |
|
MCP4332
7-Bit Quad Digital POT with SPI
|
MCP4332 | 7-Bit Quad Digital POT with SPI |
|
MCP4541
7-Bit Single Digital POT with NVM and I2C™
|
MCP4541 | 7-Bit Single Digital POT with NVM and I2C™ |
|
MCP4461
8-Bit Quad Digital POT with NVM and I2C™
|
MCP4461 | 8-Bit Quad Digital POT with NVM and I2C™ |
|
MCP4242
7-Bit Dual Digital POT with NVM and SPI
|
MCP4242 | 7-Bit Dual Digital POT with NVM and SPI |
|
MCP4532
7-Bit Single Digital POT with I2C™
|
MCP4532 | 7-Bit Single Digital POT with I2C™ |
|
MCP4642
7-Bit Dual Digital POT with NVM and I2C™
|
MCP4642 | 7-Bit Dual Digital POT with NVM and I2C™ |
|
MCP4018
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP4018 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4531
7-Bit Single Digital POT with I2C™
|
MCP4531 | 7-Bit Single Digital POT with I2C™ |
|
MCP41HV51
8-Bit Single, +36V (±18V) Digital POT w/SPI
|
MCP41HV51 | 8-Bit Single, +36V (±18V) Digital POT w/SPI |
|
MCP4431
7-Bit Quad Digital POT with I2C™
|
MCP4431 | 7-Bit Quad Digital POT with I2C™ |
|
MCP4552
8-Bit Single Digital POT with I2C™
|
MCP4552 | 8-Bit Single Digital POT with I2C™ |
|
MCP4641
7-Bit Dual Digital POT with NVM and I2C™
|
MCP4641 | 7-Bit Dual Digital POT with NVM and I2C™ |
|
MCP40D19
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP40D19 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4013
Low-Cost 64-Step Volatile Digital POT
|
MCP4013 | Low-Cost 64-Step Volatile Digital POT |
|
MCP4341
7-Bit Quad Digital POT with NVM and SPI
|
MCP4341 | 7-Bit Quad Digital POT with NVM and SPI |
|
MCP4342
7-Bit Quad Digital POT with NVM and SPI
|
MCP4342 | 7-Bit Quad Digital POT with NVM and SPI |
|
MCP41HV31
7-Bit Single, +36V (±18V) Digital POT w/SPI
|
MCP41HV31 | 7-Bit Single, +36V (±18V) Digital POT w/SPI |
|
MCP4561
8-Bit Single Digital POT with NVM and I2C™
|
MCP4561 | 8-Bit Single Digital POT with NVM and I2C™ |
|
MCP4019
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP4019 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4011
Low-Cost 64-Step Volatile Digital POT
|
MCP4011 | Low-Cost 64-Step Volatile Digital POT |
|
MCP4161
8-Bit Single Digital POT with NVM and SPI
|
MCP4161 | 8-Bit Single Digital POT with NVM and SPI |
|
MCP4141
7-Bit Single Digital POT with NVM and SPI
|
MCP4141 | 7-Bit Single Digital POT with NVM and SPI |
|
MCP4362
7-Bit Quad Digital POT with NVM and SPI
|
MCP4362 | 7-Bit Quad Digital POT with NVM and SPI |
|
MCP4262
8-Bit Dual Digital POT with NVM and SPI
|
MCP4262 | 8-Bit Dual Digital POT with NVM and SPI |
|
MCP4652
8-Bit Dual Digital POT with I2C™
|
MCP4652 | 8-Bit Dual Digital POT with I2C™ |
|
MCP4014
Low-Cost 64-Step Volatile Digital POT
|
MCP4014 | Low-Cost 64-Step Volatile Digital POT |
|
MCP4662
8-Bit Dual Digital POT with NVM and I2C™
|
MCP4662 | 8-Bit Dual Digital POT with NVM and I2C™ |
|
MCP4012
Low-Cost 64-Step Volatile Digital POT
|
MCP4012 | Low-Cost 64-Step Volatile Digital POT |
|
MCP4551
8-Bit Single Digital POT with I2C™
|
MCP4551 | 8-Bit Single Digital POT with I2C™ |
|
MCP4562
8-Bit Single Digital POT with NVM and I2C™
|
MCP4562 | 8-Bit Single Digital POT with NVM and I2C™ |
|
MCP42100
8-Bit Dual Digital POT with SPI
|
MCP42100 | 8-Bit Dual Digital POT with SPI |
|
MCP4162
8-Bit Single Digital POT with NVM and SPI
|
MCP4162 | 8-Bit Single Digital POT with NVM and SPI |
|
MCP4432
7-Bit Quad Digital POT with I2C™
|
MCP4432 | 7-Bit Quad Digital POT with I2C™ |
|
MCP45HV51
8-Bit Single, +36V (±18V) Digital POT w/I2C™
|
MCP45HV51 | 8-Bit Single, +36V (±18V) Digital POT w/I2C™ |
|
MCP4651
8-Bit Dual Digital POT with I2C™
|
MCP4651 | 8-Bit Dual Digital POT with I2C™ |
|
MCP4252
8-Bit Dual Digital POT with SPI
|
MCP4252 | 8-Bit Dual Digital POT with SPI |
|
MCP42050
8-Bit Dual Digital POT with SPI
|
MCP42050 | 8-Bit Dual Digital POT with SPI |
|
MCP4232
7-Bit Dual Digital POT with SPI
|
MCP4232 | 7-Bit Dual Digital POT with SPI |
|
MCP4451
8-Bit Quad Digital POT with I2C™
|
MCP4451 | 8-Bit Quad Digital POT with I2C™ |
|
MCP40D18
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP40D18 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4021
Low-Cost NVM Digital POT with WiperLock™
|
MCP4021 | Low-Cost NVM Digital POT with WiperLock™ |
|
MCP4142
7-Bit Single Digital POT with NVM and SPI
|
MCP4142 | 7-Bit Single Digital POT with NVM and SPI |
|
MCP4152
8-Bit Single Digital POT with SPI
|
MCP4152 | 8-Bit Single Digital POT with SPI |
|
MCP4151
8-Bit Single Digital POT with SPI
|
MCP4151 | 8-Bit Single Digital POT with SPI |
|
MCP4131
7-Bit Single Digital POT with SPI
|
MCP4131 | 7-Bit Single Digital POT with SPI |
|
MCP4231
7-Bit Dual Digital POT with SPI
|
MCP4231 | 7-Bit Dual Digital POT with SPI |
|
MCP4331
7-Bit Quad Digital POT w/SPI
|
MCP4331 | 7-Bit Quad Digital POT w/SPI |
|
MCP4352
7-Bit Quad Digital POT with SPI
|
MCP4352 | 7-Bit Quad Digital POT with SPI |
|
MCP40D17
7-Bit Single Digital POT in SC70 w/I2C™
|
MCP40D17 | 7-Bit Single Digital POT in SC70 w/I2C™ |
|
MCP4024
Low-Cost NVM Digital POT with WiperLock™
|
MCP4024 | Low-Cost NVM Digital POT with WiperLock™ |
|
MCP4022
Low-Cost NVM Digital POT with WiperLock™
|
MCP4022 | Low-Cost NVM Digital POT with WiperLock™ |
|
MCP41050
8-Bit Single Digital POT with SPI
|
MCP41050 | 8-Bit Single Digital POT with SPI |
|
MCP41100
8-Bit Single Digital POT with SPI
|
MCP41100 | 8-Bit Single Digital POT with SPI |
|
MCP4441
7-Bit Quad Digital POT with NVM and I2C™
|
MCP4441 | 7-Bit Quad Digital POT with NVM and I2C™ |
|
MCP41010
8-Bit Single Digital POT with SPI
|
MCP41010 | 8-Bit Single Digital POT with SPI |
|
MCP4132
7-Bit Single Digital POT with SPI
|
MCP4132 | 7-Bit Single Digital POT with SPI |
|
MCP42U83
10-bit Dual Digital POT, SPI/I2C
|
MCP42U83 | 10-bit Dual Digital POT, SPI/I2C |