GENERAL DESCRIPTION

The AD5172/AD5173 are dual-channel, 256-position, one-time programmable (OTP) digital potentiometers1 that employ fuse link technology to achieve memory retention of resistance settings. 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.

FEATURES

2-channel, 256-position potentiometers

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

setting provides a low cost alternative to EEMEM

Unlimited adjustments prior to OTP activation

OTP overwrite allows dynamic adjustments with user-defined preset

End-to-end resistance: 2.5 kΩ, 10 kΩ, 50 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

APPLICATIONS

Systems calibration

Electronics level setting

Mechanical trimmers replacement in new designs

Permanent factory PCB setting

Transducer adjustment of pressure, temperature, position,

chemical, and optical sensors

RF amplifier biasing

Automotive electronics adjustment

Gain control and offset adjustment

AD5172BRM2.5属于集成电路（IC） > 数字电位计。亚德诺半导体技术有限公司制造生产的AD5172BRM2.5数字电位计数字电位器是一系列集成电路器件，可提供类似于传统机械电位器或变阻器的可调节电阻，但通过电子信号而非机械输入来进行控制。虽然这些器件的电阻可耗散的电能相对有限，但其电子控制能力有助于小型化、自动化和远程控制信号级模拟电路，而这些电路本来可能会使用机械电位器。