AD5173 Series

256-Position, One-Time Programmable, Dual Channel, I2C Digital Potentiometer

Catalog

256-Position, One-Time Programmable, Dual Channel, I2C Digital Potentiometer

Part	Number of Circuits	Resistance - Wiper (Ohms) (Typ)	Mounting Type	Voltage - Supply [Min]	Voltage - Supply [Max]	Tolerance	Resistance (Ohms)	Number of Taps	Features	Configuration	Temperature Coefficient (Typ)	Interface	Supplier Device Package	Taper	Operating Temperature [Max]	Operating Temperature [Min]	Package / Case	Package / Case [x]	Package / Case [x]	Memory Type	Resistance (Ohms)	Tolerance [Max]	Tolerance [Min]
Analog Devices AD5173BRMZ50-RL7	2	160 Ohms	Surface Mount	2.7 V	5.5 V	20 %	50 kOhms	256	Selectable Address	Rheostat	35 ppm/°C	I2C	10-MSOP	Linear	125 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	OTP
Analog Devices AD5173BRMZ10-RL7	2	160 Ohms	Surface Mount	2.7 V	5.5 V	20 %		256	Selectable Address	Rheostat	35 ppm/°C	I2C	10-MSOP	Linear	125 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	OTP	10k
Analog Devices AD5173BRMZ2.5	2	160 Ohms	Surface Mount	2.7 V	5.5 V		2.5 kOhms	256	Selectable Address	Rheostat	35 ppm/°C	I2C	10-MSOP	Linear	125 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	OTP		55 %	-20 %
Analog Devices AD5173BRM50	2	160 Ohms	Surface Mount	2.7 V	5.5 V	20 %	50 kOhms	256	Selectable Address	Rheostat	35 ppm/°C	I2C	10-MSOP	Linear	125 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	OTP
Analog Devices AD5173BRM50-RL7	2	160 Ohms	Surface Mount	2.7 V	5.5 V	20 %	50 kOhms	256	Selectable Address	Rheostat	35 ppm/°C	I2C	10-MSOP	Linear	125 °C	-40 °C	10-MSOP 10-TFSOP	3 mm	0.118 in	OTP

Catalog

256-Position, One-Time Programmable, Dual Channel, I2C Digital Potentiometer

Key Features

• 2-channel, 256-position potentiometers

• One-time programmable (OTP) set-and-forget resistance setting

• provides a low cost alternative to EEMEM

• Unlimited adjustments before OTP activation

• OTP overwrite allows dynamic adjustments with user defined

• preset

• End-to-end resistance: 2.5 kΩ, 10 kΩ, and 100 kΩ

• Compact 10-lead MSOP: 3 mm × 4.9 mm

• Fast settling time: tS = 5 µs typical on power-up

• Full read/write of wiper register

• Power-on preset to midscale

• Extra package address decode pins: AD0 and AD1 (AD5173)

• Single supply: 2.7 V to 5.5 V

• Low temperature coefficient: 35 ppm/°C

• Low power: IDD = 6 µA maximum

• Wide operating temperature: −40°C to +125°C

Description

TheAD5172/ AD5173 are dual-channel, 256-position, one-time programmable (OTP) digital potentiometers that employ fuse link technology to achieve memory retention of resistance settings. The digital potentiometer, VR, and RDAC terms are used interchangeably. OTP is a cost-effective alternative to EEMEM for users who do not need to program the digital potentiometer setting in memory more than once. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors but with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.TheAD5172 / AD5173 are programmed using a 2-wire, I2C-compatible digital interface. Unlimited adjustments are allowed before permanently setting the resistance value. During OTP activation, a permanent blow fuse command freezes the wiper position (analogous to placing epoxy on a mechanical trimmer).Unlike traditional OTP digital potentiometers, the AD5172 / AD5173 have a unique temporary OTP overwrite feature that allows for new adjustments even after a fuse is blown. However, the OTP setting is restored during subsequent power-up conditions. This allows users to treat these digital potentiometers as volatile potentiometers with a programmable preset.APPLICATIONSSystems calibrationElectronics level settingMechanical trimmers replacement in new designsPermanent factory PCB settingTransducer adjustment of pressure, temperature, position, chemical, and optical sensorsRF amplifier biasingGain control and offset adjustment