AD5280BRUZ20-REEL7: Single/Dual, +15 V/±5 V, 256-Position, I²C-Compatible Digital Potentiometer
The AD5280/AD5282 are single-channel and dual-channel, 256-position, digitally controlled variable resistors (VRs)*. The devices perform the same electronic adjustment function as a potentiometer, trimmer, or variable resistor. Each VR offers a completely programmable value of resistance between the A terminal and the wiper or the B terminal and the wiper. The fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ has a 1% channel-to-channel matching tolerance. The nominal temperature coefficient of both parts is 30 parts per million/ degrees centigrade (ppm/°C). Another key feature is that the parts can operate up to +15 V or ±5 V.
Wiper position programming defaults to midscale at system power-on. When powered, the VR wiper position is programmed by an I²C-compatible, 2-wire serial data interface. The AD5280/ AD5282 feature sleep mode programmability. This allows any level of preset in power-up and is an alternative to a costly EEPROM solution. Both parts have additional programmable logic outputs that enable users to drive digital loads, logic gates, LED drivers, and analog switches in their system.
The AD5280/AD5282 are available in thin, surface-mounted 14-lead TSSOP and 16-lead TSSOP. All parts are guaranteed to operate over the extended industrial temperature range of −40°C to +85°C. For 3-wire SPI-compatible interface applications, see the AD5260/AD5262 product information on www.BDTIC.com.
产品应用领域 Applications
- Multimedia, video, and audio
- Communications
- Mechanical potentiometer replacement
- Instrumentation: gain, offset adjustment
- Programmable voltage source
- Programmable current source
- Line impedance matching
AD5280BRUZ20-REEL7 特点
- AD5280: 1 channel
- AD5282: 2 channels
- 256 positions
- 5 V to 15 V single supply; ±5.5 V dual-supply operation
- Fixed terminal resistance: 20 kΩ, 50 kΩ,
200 kΩ - Low temperature coefficient: 30 ppm/°C
- Power-on midscale preset1
- Programmable reset
- Operating temperature: −40°C to +85°C
- I²C-compatible interface
1 Assert shutdown and program the device during power-up, then deassert the shutdown to achieve the desired preset level.
AD5280BRUZ20-REEL7 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD5280BRUZ20 | 量产 | 14 ld TSSOP | 14 | 工业 |
| AD5280BRUZ20-REEL7 | 量产 | 14 ld TSSOP | 14 | 工业 |
| AD5280BRUZ200 | 量产 | 14 ld TSSOP | 14 | 工业 |
| AD5280BRUZ200-R7 | 量产 | 14 ld TSSOP | 14 | 工业 |
| AD5280BRUZ50 | 量产 | 14 ld TSSOP | 14 | 工业 |
| AD5280BRUZ50-REEL7 | 量产 | 14 ld TSSOP | 14 | 工业 |
