Overview
The AD5231BRUZ50 is a nonvolatile memory, digitally controlled potentiometer produced by Analog Devices Inc. This device offers 1024-step resolution and performs the same electronic adjustment function as a mechanical potentiometer, but with enhanced resolution, solid-state reliability, and remote controllability. It operates over a wide temperature range of −40°C to +85°C and is available in a 16-lead TSSOP package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 16-TSSOP (0.173, 4.40mm Width) | |
| Number of Pins | 16 | |
| Terminal Resistance | 50 kΩ | |
| Number of Taps | 1024 | |
| Tolerance | -40%, +20% | |
| Temperature Coefficient | 600 ppm/°C | |
| Memory Type | Non-Volatile | |
| Interface | SPI | |
| Single-Supply Voltage Range | 2.7 V to 5.5 V | |
| Dual-Supply Voltage Range | ±2.25 V to ±2.75 V |
Key Features
- SPI-compatible serial interface
- 3 V to 5 V single-supply or ±2.5 V dual-supply operation
- 28 bytes extra nonvolatile memory for user-defined data
- 100-year typical data retention at TA = 55°C
- Full monotonic operation
- Power-on refresh with EEMEM setting
- EEMEM restore time: 140 μs typical
- Predefined linear increment/decrement instructions and ±6 dB/step log taper increment/decrement instructions
- Wiper setting readback
- Permanent memory write protection
Applications
- Mechanical potentiometer replacement
- Instrumentation: gain, offset adjustment
- Programmable voltage to current conversion
- Programmable filters, delays, time constants
- Programmable power supply
- Low resolution DAC replacement
- Sensor calibration
Q & A
- What is the resolution of the AD5231BRUZ50?
The AD5231BRUZ50 has a resolution of 1024 steps.
- What is the operating temperature range of the AD5231BRUZ50?
The device operates over a temperature range of −40°C to +85°C.
- What type of interface does the AD5231BRUZ50 use?
The AD5231BRUZ50 uses an SPI-compatible serial interface.
- What are the supply voltage options for the AD5231BRUZ50?
The device can operate with a single supply from 2.7 V to 5.5 V or with a dual supply from ±2.25 V to ±2.75 V.
- Does the AD5231BRUZ50 have nonvolatile memory?
Yes, the AD5231BRUZ50 has nonvolatile memory that maintains the wiper setting.
- What is the typical data retention time for the AD5231BRUZ50?
The typical data retention time is 100 years at TA = 55°C.
- What are some common applications of the AD5231BRUZ50?
Common applications include mechanical potentiometer replacement, instrumentation, programmable voltage to current conversion, programmable filters, and sensor calibration.
- What is the package type of the AD5231BRUZ50?
The device is available in a 16-lead TSSOP package.
- Does the AD5231BRUZ50 support predefined increment/decrement instructions?
Yes, it supports predefined linear increment/decrement instructions and ±6 dB/step log taper increment/decrement instructions.
- Is the AD5231BRUZ50 protected against memory overwrite?
Yes, the device has permanent memory write protection.
