Overview
The AD5235BRUZ25, produced by Analog Devices Inc., is a dual-channel, nonvolatile memory, digitally controlled potentiometer. It offers a 1024-step resolution and is designed to replace mechanical potentiometers with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. This device operates with a single supply of 2.7 V to 5 V or a dual supply of ±2.5 V and is packaged in a 16-lead TSSOP.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Resolution | 1024 positions | |
| Nominal Resistance | 25 kΩ, 250 kΩ | Ω |
| Resistor Tolerance Error | ±8% | % |
| Temperature Coefficient | 35 ppm/°C | ppm/°C |
| Supply Voltage | 2.7 V to 5 V (single), ±2.5 V (dual) | V |
| Interface | SPI-compatible serial interface | |
| Memory Type | Nonvolatile | |
| Package | 16-lead TSSOP | |
| Operating Temperature Range | −40°C to +85°C | °C |
Key Features
- Dual-channel, nonvolatile memory, digitally controlled potentiometer with 1024-step resolution.
- Guaranteed maximum low resistor tolerance error of ±8%.
- Low temperature coefficient of 35 ppm/°C.
- SPI-compatible serial interface with 16 modes of operation and adjustment.
- Nonvolatile memory stores wiper settings and provides power-on refresh with EEMEM settings.
- Permanent memory write protection and resistance tolerance stored in EEMEM.
- 26 bytes of extra nonvolatile memory for user-defined information.
- Supports scratchpad programming, memory storing and restoring, increment/decrement, and log taper adjustments.
Applications
- DWDM laser diode driver and optical supervisory systems.
- Mechanical potentiometer replacement.
- Instrumentation: gain and offset adjustment.
- Programmable voltage-to-current conversion.
- Programmable filters, delays, and time constants.
- Programmable power supply.
- Low resolution DAC replacement.
- Sensor calibration.
Q & A
- What is the resolution of the AD5235BRUZ25?
The AD5235BRUZ25 has a resolution of 1024 positions.
- What are the nominal resistance values of the AD5235BRUZ25?
The nominal resistance values are 25 kΩ and 250 kΩ.
- What is the temperature coefficient of the AD5235BRUZ25?
The temperature coefficient is 35 ppm/°C.
- What type of interface does the AD5235BRUZ25 use?
The AD5235BRUZ25 uses an SPI-compatible serial interface.
- What is the operating temperature range of the AD5235BRUZ25?
The operating temperature range is −40°C to +85°C.
- Does the AD5235BRUZ25 have nonvolatile memory?
- What are some of the key applications of the AD5235BRUZ25?
Key applications include DWDM laser diode drivers, optical supervisory systems, mechanical potentiometer replacement, and instrumentation for gain and offset adjustment.
- How many modes of operation does the AD5235BRUZ25 support?
The AD5235BRUZ25 supports 16 modes of operation and adjustment.
- What is the package type of the AD5235BRUZ25?
The AD5235BRUZ25 is packaged in a 16-lead TSSOP.
- Does the AD5235BRUZ25 have any additional memory for user-defined information?
