Distributor | SKU | Stock | Cost | |
---|---|---|---|---|
DigiKey | 505-AD5280BRUZ20-ND | 0 | $5.31 | Buy |
Mouser Electronics | 584-AD5280BRUZ20 | 931 | $6.61 | Buy |
Arrow North American Components | AD5280BRUZ20 | 0 | $3.22 | Buy |
Win Source | AD5280BRUZ20 | 2900 | Buy | |
Arrow Europe | AD5280BRUZ20 | 758 | $4.41 | Buy |
Newark | AD5280BRUZ20 | 127 | $6.42 | Buy |
Farnell | AD5280BRUZ20 | 127 | * $6.30 | Buy |
element14 APAC | AD5280BRUZ20 | 126 | * $6.66 | Buy |
Analog Devices Inc | AD5280BRUZ20 | $6.57 | Buy |
The AD5280/AD5282 are single-channel and dual-channel, 256-position, digitally controlled variable resistors (VRs)2. 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 applica-tions, see the AD5260/AD5262 product information on www.analog.com.Applications Multimedia, video, and audio Communications Mechanical potentiometer replacement Instrumentation: gain, offset adjustment Programmable voltage source Programmable current source Line impedance matching1 Assert shutdown and program the device during power-up, then deassert the shutdown to achieve the desired preset level.2 The terms digital potentiometer, VR, and RDAC are used interchangeably.