AD5173BRM2.5-RL7: 256抽头、一次性可编程、双通道、I²C®-兼容数字电位器MSOP-10封装
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 with enhanced resolution, solid-state reliabil-ity, and superior low temperature coefficient performance.
The AD5172/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 condi-tions. This allows users to treat these digital potentiometers as volatile potentiometers with a programmable preset.
AD5172和AD5173是一款双通道、256抽头、一次性可编程(OTP)数字电位器,它采用熔丝链技术实现永久性程序设置。
OTP是一种取代EEMEM的高性价比方案,适用于无需对数字电位计的存储器进行多次编程的用户。数字电位计与机械式电位计或可变电阻的功能基本一样,它具有改进的分辨率、固态稳定性以及出众的低温度系数性能。
AD5172/AD5173采用2线、 I²C®-兼容的数字接口进行编程。在电阻值最终确认之前,用户可以任意调节。通常在OTP激活期间, 当发出熔断命令后,电位计滑动点的位置将被永久固定(类似于在机械式电位计上涂环氧树脂胶)。
与传统的OTP数字电位计不同,AD5172/ AD5173拥有独特的临时OTP写入特性,即使熔丝熔断后,用户也可以重新调节。不过,在下次上电时,需要对OTP设置进行重新存储。用户可以将这些数字电位计看作具有可编程预置功能的易失性电位计。
产品应用领域 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
- 系统校准
- 电平设置
- 机械式电位计的替代
- 永久的PCB设置
- 压力、温度、位置、化学以及光学传感器调节
- RF放大器偏置
- 汽车电子设备调节
- 增益控制与偏移调节
AD5173BRM2.5-RL7 特点
- 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, 100 kΩ
- Compact 10-lead MSOP: 3 mm × 4.9 mm
- Fast settling time: tS = 5 μs typical in power-up
- See Data Sheet for Additional Information
- 双通道、256抽头数字电位计
- 替代EEMEM的一次性可编程(OTP)电阻设置的低成本方案
- 提供OTP写入特性,用户可按照预置值进行动态的调节
- 端到端电阻: 2.5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
- 紧凑型10引脚MSOP (3 mm × 4.9 mm)封装
- 低功耗：IDD = 6 μA (最大值)
- 在OTP激活前,阻值可任意调节
AD5173BRM2.5-RL7 功能框图
| 产品型号 | 产品状态 | 封装 | 引脚 | 温度范围 |
|---|---|---|---|---|
| AD5173BRM10 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM10-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM100 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM100-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM2.5 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM2.5-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM50 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRM50-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ10 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ10-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ100 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ2.5 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ2.5-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ50 | 量产 | 10 ld MSOP | 10 | 汽车级 |
| AD5173BRMZ50-RL7 | 量产 | 10 ld MSOP | 10 | 汽车级 |
