AD5280 Series

Single/Dual, +15 V/±5 V, 256-Position, I2C-Compatible Digital Potentiometer

Catalog

Single/Dual, +15 V/±5 V, 256-Position, I2C-Compatible Digital Potentiometer

Part	Configuration	Resistance - Wiper (Ohms) (Typ)	Tolerance	Memory Type	Voltage - Supply [Max]	Voltage - Supply	Voltage - Supply [Min]	Temperature Coefficient (Typ)	Taper	Interface	Package / Case [custom]	Package / Case [custom]	Package / Case	Number of Circuits	Resistance (Ohms)	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Number of Taps	Features
Analog Devices AD5280BRUZ50	Potentiometer	60 Ohms	30 %	Volatile	16.5 V	5 V	4.5 V	30 ppm/°C	Linear	I2C	0.173 "	4.4 mm	14-TSSOP	1	50 kOhms	14-TSSOP	85 °C	-40 °C	Surface Mount	256	Selectable Address
Analog Devices AD5280BRUZ20	Potentiometer	60 Ohms	30 %	Volatile	16.5 V	5 V	4.5 V	30 ppm/°C	Linear	I2C	0.173 "	4.4 mm	14-TSSOP	1	20 kOhms	14-TSSOP	85 °C	-40 °C	Surface Mount	256	Selectable Address
Analog Devices AD5280BRUZ200	Potentiometer	60 Ohms	30 %	Volatile	16.5 V	5 V	4.5 V	30 ppm/°C	Linear	I2C	0.173 "	4.4 mm	14-TSSOP	1		14-TSSOP	85 °C	-40 °C	Surface Mount	256	Selectable Address
Analog Devices AD5280BRUZ20-REEL7	Potentiometer	60 Ohms	30 %	Volatile	16.5 V	5 V	4.5 V	30 ppm/°C	Linear	I2C	0.173 "	4.4 mm	14-TSSOP	1	20 kOhms	14-TSSOP	85 °C	-40 °C	Surface Mount	256	Selectable Address

Catalog

Single/Dual, +15 V/±5 V, 256-Position, I2C-Compatible Digital Potentiometer

Key Features

• AD5280: 1 channel

• AD5282: 2 channels

• 256 positions

• +10 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

Description

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 theAD5260/AD5262product information onwww.analog.com.ApplicationsMultimedia, video, and audioCommunicationsMechanical potentiometer replacementInstrumentation: gain, offset adjustmentProgrammable voltage sourceProgrammable current sourceLine impedance matching1Assert shutdown and program the device during power-up, then deassert the shutdown to achieve the desired preset level.2The terms digital potentiometer, VR, and RDAC are used interchangeably.