Part A
AD5260BRUZ20
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4908 Stückzahl
- Package
- TSSOP-14
- Series
- Datenerfassung
Replacement verdict
Compatible functional replacement candidate
The AD5260BRUZ20 and AD5260BRU200 are functionally compatible digital potentiometers from the same AD5260 family, sharing identical architecture, interface, and package type. The primary distinction is the end-to-end resistance value, which directly affects the application's signal range and calibration behavior. Designers should verify that the resistance tolerance and circuit impedance requirements align with the intended use case before substituting one for the other.
End-to-End Resistance
Not compatible
Package Type
High match
Interface Type
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD5260BRU200
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6259 Stückzahl
- Package
- TSSOP-14
- Series
- Datenerfassung
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5260BRUZ20 | AD5260BRU200 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 20 kΩ | 200 kΩ | The nominal resistance directly sets the impedance range of the digital potentiometer and determines the current and loading behavior in the target circuit, so the two parts are not directly interchangeable without redesign. |
| Number of Positions | 256 | 256 | The number of wiper tap positions defines the resolution of resistance adjustment; identical resolution means both parts offer the same adjustment granularity. |
| Number of Channels | 1 | 1 | The channel count determines how many independent resistance elements are available; both are single-channel devices, so board-level channel requirements match. |
| Interface Type | SPI | SPI | The digital control interface must match the host controller; both use SPI, so the same firmware and bus wiring can be reused. |
| Supply Voltage Range | 4.5 V to 16.5 V (single supply), ±2.25 V to ±8.25 V (dual supply) | 4.5 V to 16.5 V (single supply), ±2.25 V to ±8.25 V (dual supply) | The allowable supply range determines compatibility with the system power rails; identical ranges mean both parts can operate in the same supply environment. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range defines the environments in which the device can reliably operate; matching ranges mean equivalent thermal suitability. |
| Package / Mounting Type | 14-Lead TSSOP, Surface Mount | 14-Lead TSSOP, Surface Mount | Package and mounting type must match the PCB footprint and assembly process; identical packages allow the same board layout to be used. |
| Resistance Tolerance | ±30 % | ±30 % | Tolerance affects the absolute accuracy of the set resistance; matching tolerance means similar end-to-end accuracy performance. |
| Wiper Resistance | 60 Ω typical | 60 Ω typical | Wiper resistance adds a fixed series error to the programmed resistance and affects signal integrity; identical values mean comparable error contribution. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5260BRUZ20 | AD5260BRU200 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Logarithmic |
| Number of Circuits | 1 | 1 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 20k | 200k |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±5V | 4.5V ~ 16.5V, ±4.5V ~ 5.5V |
| Temperature Coefficient(Typ) | 35ppm/°C | 35ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Configuration | Potentiometer | - |
| Interface | SPI | - |
| Features | Cascade Pin | - |
| Tolerance | ±30% | - |
Frequently asked questions
What is the difference between AD5260BRUZ20 and AD5260BRU200?
The AD5260BRUZ20 and AD5260BRU200 are both single-channel, 256-position digital potentiometers from Analog Devices in a 14-lead TSSOP package. The primary difference is the end-to-end resistance: the AD5260BRUZ20 has a nominal 20 kΩ resistance, while the AD5260BRU200 has a nominal 200 kΩ resistance. Both share the same SPI-compatible interface, supply voltage range, and functional architecture.
Are the AD5260BRUZ20 and AD5260BRU200 pin-compatible?
Yes. Both devices are offered in the same 14-lead TSSOP (RU-14) package and share the same pinout, including CS, SDI, SDO, CLK, VDD, VSS, A, B, W, and digital control pins. This allows them to be used interchangeably on a PCB layout designed for the RU-14 package, provided the resistance value is appropriate for the application.
Can the AD5260BRUZ20 and AD5260BRU200 be used interchangeably in a design?
They are functionally interchangeable only if the circuit performance is acceptable with either 20 kΩ or 200 kΩ end-to-end resistance. Parameters such as wiper resistance, bandwidth, and the resulting voltage divider ratios will differ because the resistance values differ by a factor of ten. The designer must verify that the chosen resistance value meets the requirements for gain setting, attenuation, or biasing in the target application.
What is the supply voltage range for the AD5260BRUZ20 and AD5260BRU200?
Both devices operate from a dual supply of ±4.5 V to ±16.5 V or a single supply of 4.5 V to 16.5 V, as specified in the Analog Devices AD5260 datasheet. The digital interface logic levels are referenced to the digital supply or ground depending on configuration, and the analog signal range must remain within the supply rails.
What is the resolution and number of positions for these digital potentiometers?
Both the AD5260BRUZ20 and AD5260BRU200 are 256-position digital potentiometers, providing 8-bit resolution. The wiper can be set to any of 256 discrete tap points between the A and B terminals, allowing fine adjustment of the resistance ratio.
What interface do the AD5260BRUZ20 and AD5260BRU200 use for digital control?
Both devices use a 3-wire SPI-compatible serial interface with CS, CLK, and SDI pins for writing data, plus an SDO pin for daisy-chain readback. The interface supports daisy-chaining multiple devices and operates with clock frequencies specified in the AD5260 datasheet.
What are the typical applications for the AD5260BRUZ20 versus the AD5260BRU200?
The AD5260BRUZ20 (20 kΩ) is typically used in applications requiring lower resistance for higher bandwidth or lower thermal noise, such as programmable gain amplifiers and active filters. The AD5260BRU200 (200 kΩ) is often selected for higher-impedance signal paths, low-power biasing, or applications where a larger resistance minimizes loading effects on preceding stages. Both are used in calibration, volume control, and adjustable reference circuits.
Do the AD5260BRUZ20 and AD5260BRU200 have the same operating temperature range?
Yes. Both devices are specified for the industrial temperature range of −40°C to +85°C, as stated in the Analog Devices AD5260 datasheet. The BRUZ suffix indicates a RoHS-compliant 14-lead TSSOP package with the same temperature grade for both resistance options.