Overview
The AD5204BRU10, manufactured by Analog Devices Inc., is a 4-channel digitally controlled variable resistor (VR) device. It is part of the AD5204/AD5206 series, which provides electronic adjustment functions similar to those of a potentiometer or variable resistor. 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. This device is designed for applications requiring precise and programmable resistance adjustments.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 4 | |
| Positions per Channel | 256 | |
| Terminal Resistance | 10 kΩ, 50 kΩ, 100 kΩ | |
| 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 | |
| Serial Interface | 3-wire SPI-compatible | |
| Bandwidth (−3 dB) | 721 kHz (RAB = 10 kΩ), 137 kHz (RAB = 50 kΩ), 69 kHz (RAB = 100 kΩ) | kHz |
| Total Harmonic Distortion | 0.004 % (VA = 1.414 V rms, VB = 0 V dc, f = 1 kHz) | % |
| Settling Time | 2 μs (VA = 5 V, VB = 0 V, ±1 LSB error band, RAB = 10 kΩ) | μs |
Key Features
- Multiple independently programmable channels with 256 positions each.
- 3-wire SPI-compatible serial data input for easy integration with microcontrollers.
- Power-on midscale preset and optional reset (PR) pin to force wipers to the midscale position.
- Terminal resistance options of 10 kΩ, 50 kΩ, and 100 kΩ with a nominal temperature coefficient of 700 ppm/°C.
- Single-supply operation from +2.7 V to +5.5 V and dual-supply operation from ±2.7 V.
- Available in 24-lead SOIC, 24-lead TSSOP, and 32-lead LFCSP packages.
- Guaranteed operation over the extended industrial temperature range of −40°C to +85°C.
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 AD5204BRU10 used for?
The AD5204BRU10 is used as a digitally controlled variable resistor, replacing mechanical potentiometers and providing precise resistance adjustments in various applications.
- How many channels does the AD5204BRU10 have?
The AD5204BRU10 has 4 channels.
- What are the terminal resistance options for the AD5204BRU10?
The terminal resistance options are 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the operating voltage range for the AD5204BRU10?
The device operates from +2.7 V to +5.5 V (single-supply) and ±2.7 V (dual-supply).
- What is the temperature range for the AD5204BRU10?
The device operates over the extended industrial temperature range of −40°C to +85°C.
- What type of serial interface does the AD5204BRU10 use?
The device uses a 3-wire SPI-compatible serial interface.
- What is the bandwidth of the AD5204BRU10?
The bandwidth is 721 kHz for RAB = 10 kΩ, 137 kHz for RAB = 50 kΩ, and 69 kHz for RAB = 100 kΩ.
- What is the total harmonic distortion of the AD5204BRU10?
The total harmonic distortion is 0.004 % at VA = 1.414 V rms, VB = 0 V dc, and f = 1 kHz.
- How long does it take for the AD5204BRU10 to settle?
The settling time is 2 μs for VA = 5 V, VB = 0 V, ±1 LSB error band, and RAB = 10 kΩ.
- What are some common applications of the AD5204BRU10?
Common applications include mechanical potentiometer replacement, instrumentation for gain and offset adjustment, programmable voltage-to-current conversion, programmable filters and delays, and line impedance matching.
