CAT5251:Digital Potentiometer (POT), 256-Tap, I2C Compatible
The CAT5251 is four digital POTs integrated with control logic and 16 bytes of NVRAM memory. Each digital POT consists of a series of resistive elements connected between two externally accessible end points. The tap points between each resistive element are connected to the wiper outputs with CMOS switches. A separate 8-bit control register (WCR) independently controls the wiper tap switches for each digital POT. Associated with each wiper control register are four 8-bit non-volatile memory data registers (DR) used for storing up to four wiper settings. Writing to the wiper control register or any of the non-volatile data registers is via a SPI serial bus. On power-up, the contents of the first data register (DR0) for each of the four potentiometers is automatically loaded into its respective wiper control register.
技术特性
- Four linear-taper digital potentiometers
- 256 resistor taps per potentiometer
- End to end resistance 50 kΩ or 100 kΩ
- Potentiometer control and memory access via SPI interface
- Low wiper resistance, typically 100 Ω
- Nonvolatile memory storage for up to four wiper settings for each potentiometer
- Automatic recall of saved wiper settings at power up
- 2.5 to 6.0 volt operation
- Standby current less than 1 µA
- 1,000,000 nonvolatile WRITE cycles
- 100 year nonvolatile memory data retention
- Industrial temperature range
应用
- Audio Equipment
- Industrial controls
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终端产品
- Industrial Equipment
- Automobiles
封装图 MARKING DIAGRAM
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订购信息 Ordering Information
| 产品 |
状况 |
Compliance |
具体说明 |
封装 |
MSL* |
容器 |
预算价格 (1千个数量的单价） |
| 类型 |
外形 |
类型 |
数量 |
| CAT5251WI-00-T1 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
SOIC-24W |
751BK |
1 |
Tape and Reel |
1000 |
$3.65 |
| CAT5251WI-50-T1 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
SOIC-24W |
751BK |
1 |
Tape and Reel |
1000 |
$3.65 |
| CAT5251WI00 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
SOIC-24W |
751BK |
1 |
Tube |
31 |
$33.3325 |
| CAT5251WI50 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
SOIC-24W |
751BK |
1 |
Tube |
31 |
$33.3325 |
| CAT5251YI-00-T2 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
TSSOP-24 |
948AR |
1 |
Tape and Reel |
2000 |
$4.8665 |
| CAT5251YI-50-T2 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
TSSOP-24 |
948AR |
1 |
Tape and Reel |
2000 |
$4.8665 |
| CAT5251YI00 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
TSSOP-24 |
948AR |
1 |
Tube |
62 |
$33.3325 |
| CAT5251YI50 |
Active |
|
Digital Potentiometer (POT), Quad 256-Tap, with I2C Interface |
TSSOP-24 |
948AR |
1 |
Tube |
62 |
$33.3325 |
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