Overview
The AD5170BRMZ2.5, produced by Analog Devices Inc., is a 256-position, two-time programmable digital potentiometer. This component employs advanced fuse link technology, allowing users two opportunities to permanently program the resistance setting. It functions as a solid-state alternative to mechanical potentiometers and variable resistors, offering enhanced resolution, reliability, and a low temperature coefficient. The AD5170 is programmed using a 2-wire, I²C-compatible digital interface and features a unique temporary OTP overwrite capability, enabling new adjustments even after the fuse is blown, with the OTP setting restored during subsequent power-up conditions.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Taps | 256 | - |
| End to End Resistance | 2.5 kΩ | Ω |
| Interface | I²C | - |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Operating Temperature | -40°C to +125°C | °C |
| Temperature Coefficient | 35 ppm/°C | ppm/°C |
| Package Type | 10-Lead MSOP | - |
| Settling Time | 5 μs typical | μs |
| Power-on Preset | Midscale | - |
| Maximum Current | ±5 mA (continuous), ±20 mA (pulsed) | mA |
Key Features
- Two-time programmable using fuse link technology
- 256-position digital potentiometer with linear taper
- I²C-compatible digital interface
- Temporary OTP overwrite feature for dynamic adjustments
- Power-on preset to midscale
- Fast settling time of 5 μs typical
- Low power consumption: IDD = 6 μA maximum
- Low temperature coefficient: 35 ppm/°C
- Compact 10-lead MSOP package
- Selectable address bits for multiple package decoding
Applications
- Systems calibration
- Electronics level setting
- Mechanical trimmers replacement in new designs
- Permanent factory PCB settings
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustments
Q & A
- What is the AD5170BRMZ2.5 used for?
The AD5170BRMZ2.5 is used as a digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications such as systems calibration, electronics level setting, and transducer adjustments.
- How is the AD5170BRMZ2.5 programmed?
The AD5170BRMZ2.5 is programmed using a 2-wire, I²C-compatible digital interface. It allows for two-time programmability using fuse link technology.
- What are the key features of the AD5170BRMZ2.5?
Key features include 256-position digital potentiometer, I²C interface, temporary OTP overwrite, power-on preset to midscale, fast settling time, low power consumption, and low temperature coefficient.
- What is the operating temperature range of the AD5170BRMZ2.5?
The operating temperature range is -40°C to +125°C.
- What is the supply voltage range for the AD5170BRMZ2.5?
The supply voltage range is 2.7 V to 5.5 V.
- What package type does the AD5170BRMZ2.5 come in?
The AD5170BRMZ2.5 comes in a 10-lead MSOP package.
- What is the settling time of the AD5170BRMZ2.5?
The settling time is 5 μs typical.
- Can the AD5170BRMZ2.5 be used in RF applications?
Yes, it can be used for RF amplifier biasing and gain control.
- Is the AD5170BRMZ2.5 suitable for high-temperature environments?
Yes, it operates within a temperature range of -40°C to +125°C.
- Does the AD5170BRMZ2.5 have any special programming requirements?
For OTP programming, the VDD supply must be within the 5.6 V to 5.8 V range and capable of driving 100 mA.
