Part A
AD5260BRUZ50
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5431 PCS
- Package
- TSSOP-14
- Series
- Acquisição de dados - Potenciômetros Digitais
Replacement verdict
Not a drop-in replacement
The AD5260BRUZ50 and AD5263BRU20 are not drop-in replacements for each other. The AD5260BRUZ50 is a single-channel 50 kΩ digital potentiometer, while the AD5263BRU20 is a quad-channel 20 kΩ digital potentiometer. They differ in channel count, end-to-end resistance, package pinout, and interface configuration, so direct substitution is not possible without circuit redesign.
Different channel count
Different end-to-end resistance
Different package pinout
Different interface configuration
Parts at a glance
Part B
AD5263BRU20
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 584 PCS
- Package
- TSSOP-24
- Series
- Acquisição de dados - Potenciômetros Digitais
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5260BRUZ50 | AD5263BRU20 | Why it matters |
|---|---|---|---|
| Number of Channels | 1 | 4 | Channel count determines how many independent resistance paths can be controlled; a 1-channel part cannot directly replace a 4-channel part in multi-channel designs. |
| End-to-End Resistance | 50 kΩ | 20 kΩ | The nominal resistance sets the signal attenuation range and loading; substituting a different value changes gain, current, and matching in the circuit. |
| Resolution | 256 positions (8-bit) | 256 positions (8-bit) | Resolution defines the number of discrete wiper settings; identical resolution means comparable adjustment granularity. |
| Interface Type | SPI | I²C | The digital control interface must match the host controller; SPI and I²C are not pin- or protocol-compatible, requiring firmware and wiring changes. |
| Supply Voltage Range | 4.5 V to 16.5 V (single), ±4.5 V to ±8.25 V (dual) | 4.5 V to 16.5 V (single), ±4.5 V to ±8.25 V (dual) | Supply range determines compatibility with the system power rails; matching ranges allow operation in the same voltage domain. |
| Package | 14-lead TSSOP | 20-lead TSSOP | Package footprint and pin count affect PCB layout; different packages are not drop-in compatible and require board redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range defines the environment in which the device is guaranteed to meet specifications; matching ranges suit the same application conditions. |
| Wiper Resistance | 60 Ω typical | 60 Ω typical | Wiper resistance adds to the set resistance and affects accuracy, especially at low settings; similar values preserve circuit behavior. |
| Nonvolatile Memory | No | No | Nonvolatile memory retains the wiper setting after power loss; absence means the setting must be reloaded at each power-up. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5260BRUZ50 | AD5263BRU20 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 1 | 4 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 50k | 20k |
| Interface | SPI | I²C, SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±5V | 4.5V ~ 16.5V, ±4.5V ~ 7.5V |
| Features | Cascade Pin | Cascade Pin, Selectable Address |
| Tolerance | ±30% | ±30% |
| Temperature Coefficient(Typ) | 35ppm/°C | 30ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD5260BRUZ50 and AD5263BRU20?
The AD5260BRUZ50 is a single-channel, 8-bit digital potentiometer with a 50 kΩ end-to-end resistance, while the AD5263BRU20 is a quad-channel, 8-bit digital potentiometer with a 20 kΩ end-to-end resistance. The AD5260 offers one potentiometer in a 14-lead TSSOP package, whereas the AD5263 integrates four independent potentiometers in a 24-lead TSSOP package.
Are the AD5260BRUZ50 and AD5263BRU20 pin-compatible?
No. The AD5260BRUZ50 is housed in a 14-lead TSSOP, and the AD5263BRU20 is housed in a 24-lead TSSOP. They have different pin counts and pin functions, so they are not pin-compatible and cannot be used as drop-in replacements without PCB redesign.
What is the resolution and number of positions for each device?
Both devices are 8-bit digital potentiometers, providing 256 programmable positions. The AD5260BRUZ50 has one channel with 256 positions, and the AD5263BRU20 has four independent channels, each with 256 positions.
What are the end-to-end resistance values and tolerances?
The AD5260BRUZ50 has a nominal end-to-end resistance of 50 kΩ. The AD5263BRU20 has a nominal end-to-end resistance of 20 kΩ. Both devices typically specify a resistance tolerance of ±30% over the full temperature range, as detailed in the respective Analog Devices datasheets.
What digital interface do these digital potentiometers use?
Both the AD5260BRUZ50 and AD5263BRU20 use a 3-wire SPI-compatible serial interface for programming the wiper position. The AD5263 also includes additional address pins to allow multiple devices to share the same SPI bus.
What are the operating voltage ranges for the AD5260BRUZ50 and AD5263BRU20?
Both devices operate from a single supply voltage range of 2.7 V to 5.5 V, or from dual supplies of ±2.5 V to ±2.75 V. The digital logic supply (VDD) and the analog supply (VSS) can be independently set within these ranges, per the manufacturer datasheets.
Can the AD5260BRUZ50 be used to replace one channel of the AD5263BRU20?
Functionally, one channel of the AD5263BRU20 can be emulated by a single AD5260BRUZ50, but the end-to-end resistance differs (50 kΩ vs. 20 kΩ), and the package and pinout are not compatible. A direct substitution requires verifying the resistance value, PCB layout, and control interface in the target design.
What are the typical applications for each device?
The AD5260BRUZ50 is typically used in single-channel trimming and calibration applications, such as adjustable gain/offset in instrumentation. The AD5263BRU20 is suited for multi-channel applications requiring independent digital potentiometers, such as quad-channel audio volume control, multi-channel sensor calibration, or programmable filters.