Overview
The AD5204BRZ100-REEL, produced by Analog Devices Inc., is a 4-channel digitally controlled variable resistor (VR) device. This component performs the same electronic adjustment function as a potentiometer or variable resistor, making it an ideal replacement for mechanical potentiometers. Each channel contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the SPI-compatible serial-input register. The device operates over a wide voltage range, from +2.7 V to +5.5 V single-supply or ±2.7 V dual-supply, and is guaranteed to function over an extended industrial temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | - |
| Number of Positions | 256 | - |
| Terminal Resistance | 10 kΩ, 50 kΩ, 100 kΩ | Ω |
| Supply Voltage | +2.7 V to +5.5 V (single-supply), ±2.7 V (dual-supply) | V |
| Operating Temperature Range | −40°C to +85°C | °C |
| Package Types | 24-lead SOIC, 24-lead TSSOP, 32-lead LFCSP | - |
| Interface | 3-wire SPI-compatible serial data input | - |
| Power-on Preset | Midscale | - |
| Reset Pin Function | Forces all wipers to midscale position | - |
Key Features
- Multiple independently programmable channels with 256 positions each.
- 3-wire SPI-compatible serial data input for easy integration with microcontrollers.
- Optional reset pin to set all wipers to the midscale position.
- Serial data output pin for daisy chaining in multiple VR applications (AD5204 only).
- Low power consumption and high accuracy.
- Guaranteed operation over an extended industrial temperature range.
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 AD5204BRZ100-REEL used for?
The AD5204BRZ100-REEL is used as a digitally controlled variable resistor, replacing mechanical potentiometers in various applications.
- How many channels does the AD5204BRZ100-REEL have?
The AD5204BRZ100-REEL has 4 channels.
- What are the available terminal resistances for the AD5204BRZ100-REEL?
The available terminal resistances are 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating voltage range of the AD5204BRZ100-REEL?
The operating voltage range is +2.7 V to +5.5 V single-supply or ±2.7 V dual-supply.
- What is the temperature range for the AD5204BRZ100-REEL?
The device operates over an extended industrial temperature range of −40°C to +85°C.
- What interface does the AD5204BRZ100-REEL use?
The device uses a 3-wire SPI-compatible serial data input interface.
- Does the AD5204BRZ100-REEL have a reset feature?
Yes, an optional reset pin forces all wipers to the midscale position.
- Can the AD5204BRZ100-REEL be daisy-chained?
Yes, the AD5204 allows simple daisy chaining in multiple VR applications without requiring additional external decoding logic.
- What are some common applications of the AD5204BRZ100-REEL?
Common applications include mechanical potentiometer replacement, instrumentation, programmable voltage-to-current conversion, and line impedance matching.
- What packages are available for the AD5204BRZ100-REEL?
The device is available in 24-lead SOIC, 24-lead TSSOP, and 32-lead LFCSP packages.
