Overview
The AD5204BRU100, produced by Analog Devices Inc., is a 4-channel, 256-position digitally controlled variable resistor (VR) device. This component functions as a digital potentiometer, providing the same electronic adjustment capabilities as a mechanical potentiometer or variable resistor. It is part of the AD5204/AD5206 series, which includes devices with 4 or 6 channels. Each channel contains a fixed resistor with a wiper contact that can be programmed to tap the fixed resistor value at a specific point determined by a digital code loaded into the SPI-compatible serial-input register.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Number of Channels | 4 channels | - |
| Number of Positions | 256 positions | - |
| Terminal Resistance | 10 kΩ, 50 kΩ, 100 kΩ | - |
| Supply Voltage | +2.7 V to +5.5 V (single-supply), ±2.7 V (dual-supply) | - |
| Interface | 3-wire SPI-compatible serial data input | - |
| Operating Temperature | −40°C to +85°C | - |
| Package Options | 24-lead SOIC, 24-lead TSSOP, 32-lead LFCSP | - |
| Power-on Preset | Midscale preset | - |
| Reset Pin | Optional reset (PR) pin to set wipers to midscale | - |
Key Features
- Multiple independently programmable channels
- 256-position resolution for each channel
- Programmable resistance between the wiper and either endpoint of the fixed resistor
- 3-wire SPI-compatible serial data input for easy integration
- Optional reset (PR) pin to force all wipers to the midscale position
- Serial data output pin for daisy chaining (AD5204 only)
- Low power consumption and high accuracy
Applications
- Mechanical potentiometer replacement
- Instrumentation: gain and offset adjustment
- Programmable voltage-to-current conversion
- Programmable filters, delays, and time constants
- Line impedance matching
Q & A
- What is the AD5204BRU100 used for? The AD5204BRU100 is used as a digital potentiometer, replacing mechanical potentiometers in various applications.
- How many channels does the AD5204BRU100 have? The AD5204BRU100 has 4 channels.
- What is the resolution of each channel? Each channel has a 256-position resolution.
- What are the terminal resistance options for the AD5204BRU100? The terminal resistance options are 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating voltage range for the AD5204BRU100? The operating voltage range is +2.7 V to +5.5 V for single-supply and ±2.7 V for dual-supply.
- What interface does the AD5204BRU100 use? The AD5204BRU100 uses a 3-wire SPI-compatible serial data input.
- What are the package options for the AD5204BRU100? The package options include 24-lead SOIC, 24-lead TSSOP, and 32-lead LFCSP.
- Does the AD5204BRU100 have a power-on preset feature? Yes, it has a power-on midscale preset feature.
- Can the AD5204BRU100 be reset to a specific position? Yes, an optional reset (PR) pin can force all wipers to the midscale position.
- Is the AD5204BRU100 suitable for industrial temperature ranges? Yes, it is guaranteed to operate over the extended industrial temperature range of −40°C to +85°C.
