Overview
The AD5263BRUZ50-REEL7, produced by Analog Devices Inc., is a quad-channel, 256-position digital potentiometer. This device is the industry’s first to offer 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 offers 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 +4.5 V to +15 V or at ±5 V and is guaranteed to function over a wide operating temperature range of –40°C to +125°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| End-to-end Resistance | 20 kΩ, 50 kΩ, 200 kΩ | Ω | |||
| Temperature Coefficient (Rheostat Mode) | 30 ppm/°C | ppm/°C | |||
| Temperature Coefficient (Voltage Divider Mode) | 5 ppm/°C | ppm/°C | |||
| Operating Temperature Range | –40°C | +125°C | °C | ||
| Single-Supply Range | VSS = 0 V | 4.5 V | 16.5 V | V | |
| Dual-Supply Range | ±4.5 V | ±7.5 V | V | ||
| Logic Supply Voltage | 2.7 V | 5.5 V | V | ||
| Power Dissipation | VDD = +5 V, VSS = –5 V | 0.6 mW | mW | ||
| Bandwidth (3 dB) | RAB = 20 kΩ/50 kΩ/200 kΩ | 300/150/35 kHz | kHz |
Key Features
- Quad-channel, 256-position digital potentiometer with pin-selectable SPI or I2C-compatible interface.
- Completely programmable resistance between A terminal and wiper or B terminal and wiper.
- Fixed A-to-B terminal resistance of 20 kΩ, 50 kΩ, or 200 kΩ with a nominal temperature coefficient of ±30 ppm/°C and ±1% channel-to-channel matching tolerance.
- Operates from +4.5 V to +15 V or at ±5 V.
- Wiper position presets to midscale upon power-on.
- Additional programmable logic outputs in I2C mode to drive digital loads, logic gates, and analog switches.
- Wide operating temperature range of –40°C to +125°C.
- Available in a 24-lead TSSOP package.
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 AD5263BRUZ50-REEL7?
The AD5263BRUZ50-REEL7 is a quad-channel, 256-position digital potentiometer produced by Analog Devices Inc.
- What are the key interfaces available for the AD5263?
The AD5263 offers pin-selectable SPI or I2C-compatible interfaces.
- What are the end-to-end resistance options for the AD5263?
The end-to-end resistance options are 20 kΩ, 50 kΩ, and 200 kΩ.
- What is the operating temperature range of the AD5263?
The operating temperature range is –40°C to +125°C.
- How does the wiper position behave upon power-on?
The wiper position presets to midscale upon power-on.
- What are some common applications of the AD5263?
Common applications include mechanical potentiometer replacement, optical network adjustment, instrumentation, stereo channel audio level control, and more.
- What is the package type for the AD5263?
The AD5263 is available in a 24-lead TSSOP package.
- What is the temperature coefficient for the rheostat mode?
The temperature coefficient for the rheostat mode is 30 ppm/°C.
- Can the AD5263 operate in dual-supply mode?
Yes, the AD5263 can operate in dual-supply mode with ±5 V.
- What is the bandwidth of the AD5263?
The bandwidth is 300 kHz, 150 kHz, or 35 kHz depending on the resistance setting.
