Overview
The AD5263BRUZ200-R7, produced by Analog Devices Inc., is a quad-channel, 256-position digital potentiometer. This device is the industry's first to offer such a configuration with a selectable digital interface, allowing it to perform the same electronic adjustment functions as mechanical potentiometers or variable resistors but with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.
Each channel of the AD5263 provides a completely programmable value of resistance between the A terminal and the wiper or between the B terminal and the wiper. The device operates from a single supply of +4.5 V to +15 V or from a dual supply of ±5 V, making it versatile for various applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Fixed A-to-B Terminal Resistance | - | - | - | 20 kΩ, 50 kΩ, 200 kΩ | - |
| Temperature Coefficient | - | - | ±30 ppm/°C | - | - |
| Channel-to-Channel Matching Tolerance | - | - | ±1% | - | - |
| Operating Temperature Range | - | -40°C | - | +125°C | - |
| Single Supply Range | VSS = 0 V | 4.5 V | - | 16.5 V | - |
| Dual Supply Range | - | ±4.5 V | - | ±7.5 V | - |
| Logic Supply Voltage | - | 2.7 V | 5.5 V | - | V |
| Logic Supply Current | VL = +5 V | 25 µA | 60 µA | - | - |
| Bandwidth (3 dB) | RAB = 20 kΩ/50 kΩ/200 kΩ | - | 300/150/35 kHz | - | - |
| Total Harmonic Distortion | VA = 1 V rms, VB = 0 V, f = 1 kHz, RAB = 20 kΩ | - | 0.05 % | - | - |
Key Features
- Selectable digital interface (3-wire SPI or 2-wire I2C-compatible)
- Quad-channel configuration with 256-position digital potentiometer
- Completely programmable resistance between A terminal and wiper or B terminal and wiper
- Operating temperature range of –40°C to +125°C
- Low temperature coefficient performance (±30 ppm/°C for rheostat mode, 5 ppm/°C for voltage divider mode)
- Programmable logic outputs to drive digital loads, logic gates, and analog switches
- Wiper position programming presets to midscale upon power-on
Applications
- Mechanical potentiometer replacement
- Optical network adjustment
- Instrumentation: gain, offset adjustment
- Stereo channel audio level control
- Automotive electronics adjustment
- Programmable power supply
- Programmable filters, delays, time constants
- Line impedance matching
- Low resolution DAC/trimmer replacement
- Base station power amp biasing
- Sensor calibration
Q & A
- What is the AD5263BRUZ200-R7 used for?
The AD5263BRUZ200-R7 is used as a quad-channel, 256-position digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications.
- What are the operating voltage ranges for the AD5263BRUZ200-R7?
The device operates from a single supply of +4.5 V to +15 V or from a dual supply of ±5 V.
- What is the temperature coefficient of the AD5263BRUZ200-R7?
The temperature coefficient is ±30 ppm/°C for rheostat mode and 5 ppm/°C for voltage divider mode.
- What digital interfaces does the AD5263BRUZ200-R7 support?
The device supports both 3-wire SPI and 2-wire I2C-compatible digital interfaces.
- What is the bandwidth of the AD5263BRUZ200-R7?
The bandwidth is 300 kHz for 20 kΩ, 150 kHz for 50 kΩ, and 35 kHz for 200 kΩ configurations.
- What are some common applications of the AD5263BRUZ200-R7?
Common applications include mechanical potentiometer replacement, optical network adjustment, instrumentation, audio level control, automotive electronics adjustment, and more.
- How does the wiper position reset upon power-on?
The wiper position presets to midscale upon power-on.
- What is the maximum operating temperature of the AD5263BRUZ200-R7?
The maximum operating temperature is +125°C.
- What is the logic supply current of the AD5263BRUZ200-R7?
The logic supply current is 25 µA to 60 µA at VL = +5 V.
- Does the AD5263BRUZ200-R7 have programmable logic outputs?
Yes, the device has programmable logic outputs to drive digital loads, logic gates, and analog switches.
