Overview
The AD5262BRUZ20-RL7 is a dual-channel, 256-position, digitally controlled variable resistor (VR) device produced by Analog Devices Inc. This device functions as a digital potentiometer, providing the same electronic adjustment capabilities as a mechanical potentiometer or variable resistor. It features a fixed resistor with a wiper contact that can be adjusted via a digital code loaded into an SPI-compatible serial-input register. This makes it versatile for various applications requiring precise and programmable resistance adjustments.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD5262BRUZ20-RL7 |
| Package | TSSOP-16 |
| Resistance Range | 20 kΩ |
| Number of Positions | 256 |
| Interface | SPI (4-wire) |
| Supply Voltage | 5V to 15V (single-supply), ±5.5V (dual-supply) |
| Operating Temperature | -40°C to +85°C |
| Differential Nonlinearity | ±1/4 LSB (typ) |
| Integral Nonlinearity | ±1/2 LSB (typ) |
| Full-Scale Error | -1 LSB (typ) |
| Zero-Scale Error | 1 LSB (typ) |
| Maximum Shutdown Current | 5 μA |
| Bandwidth (-3dB) | 310 kHz |
| Resistor Noise Voltage | 13 nV/√Hz (RWB = 20 kΩ, f = 1 kHz) |
| Typical Wiper Resistance | 60 ohm (IW = 1 V/RAB) |
Key Features
- Dual-channel, 256-position digitally controlled variable resistor.
- SPI-compatible serial-input register for independent channel programming.
- Fixed A-to-B terminal resistance of 20 kΩ.
- Low differential and integral nonlinearity (±1/4 LSB and ±1/2 LSB, respectively).
- Full-scale and zero-scale error of -1 LSB and 1 LSB, respectively.
- Maximum shutdown current of 5 μA.
- Operates over a wide supply voltage range (5V to 15V single-supply, ±5.5V dual-supply).
- Power-on midscale preset.
- High bandwidth (-3dB) of 310 kHz and low resistor noise voltage of 13 nV/√Hz.
- Typical wiper resistance of 60 ohm.
- 16-lead TSSOP package with an operating temperature range of -40°C to +85°C.
Applications
- Mechanical potentiometer replacement.
- Instrumentation: gain and offset adjustment.
- Stereo channel audio level control.
- Programmable voltage-to-current conversion.
- Programmable filters, delays, and time constants.
- Line impedance matching.
- Low resolution DAC replacement.
Q & A
- What is the AD5262BRUZ20-RL7 used for?
The AD5262BRUZ20-RL7 is used as a digital potentiometer, providing the same electronic adjustment functions as a mechanical potentiometer or variable resistor.
- What is the resistance range of the AD5262BRUZ20-RL7?
The resistance range is 20 kΩ.
- How many positions does the AD5262BRUZ20-RL7 have?
The device has 256 positions.
- What interface does the AD5262BRUZ20-RL7 use?
The device uses an SPI (4-wire) interface.
- What is the supply voltage range for the AD5262BRUZ20-RL7?
The supply voltage range is 5V to 15V (single-supply) and ±5.5V (dual-supply).
- What is the operating temperature range of the AD5262BRUZ20-RL7?
The operating temperature range is -40°C to +85°C.
- What are the typical differential and integral nonlinearity values for the AD5262BRUZ20-RL7?
The typical differential nonlinearity is ±1/4 LSB, and the integral nonlinearity is ±1/2 LSB.
- What is the maximum shutdown current of the AD5262BRUZ20-RL7?
The maximum shutdown current is 5 μA.
- What is the bandwidth (-3dB) of the AD5262BRUZ20-RL7?
The bandwidth (-3dB) is 310 kHz.
- What are some common applications of the AD5262BRUZ20-RL7?
Common applications include mechanical potentiometer replacement, instrumentation, audio level control, programmable voltage-to-current conversion, and more.
