Part A
AD5263BRUZ50
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 5280 PCS
- Package
- TSSOP-24
- Series
- Acquisition de données - potentiomètres numériques
Replacement verdict
Compatible functional replacement candidate
The AD5263BRUZ20 and AD5263BRUZ50 are functionally compatible digital potentiometers from the same AD5263 family, sharing identical package, interface, channel count, and operating temperature range. The primary distinction is end-to-end resistance, which directly affects the resistance range and wiper settings in the target application. The AD5263BRUZ50 can serve as a replacement for the AD5263BRUZ20 only when the circuit is redesigned or recalibrated to account for the higher nominal resistance, making it a viable candidate rather than a direct drop-in substitute.
End-to-End Resistance
Validation required
Package Type
High match
Channel Count
High match
Interface Type
High match
Parts at a glance
Part B
AD5263BRUZ20
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4338 PCS
- Package
- TSSOP-24
- Series
- Acquisition de données - potentiomètres numériques
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5263BRUZ20 | AD5263BRUZ50 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 20 kΩ | 50 kΩ | Determines the nominal resistance range of the digital potentiometer and directly affects the current through and voltage across the wiper load in the target circuit. |
| Number of Positions | 256 | 256 | Sets the wiper resolution; identical resolution means both parts offer the same number of programmable tap steps. |
| Number of Channels | 4 | 4 | Defines how many independent potentiometer channels are available in a single package, affecting board space and channel count in multi-channel designs. |
| Interface Type | SPI | SPI | Determines the digital communication protocol required by the host controller to program the device. |
| Supply Voltage Range | 4.5 V to 16.5 V (or ±2.25 V to ±8.25 V) | 4.5 V to 16.5 V (or ±2.25 V to ±8.25 V) | Defines the allowable operating supply window and whether the part can be used in single-supply or dual-supply analog signal chains. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Specifies the ambient temperature range over which the device is guaranteed to meet its electrical specifications. |
| Package / Mounting Type | 24-Lead TSSOP, Surface Mount | 24-Lead TSSOP, Surface Mount | Confirms physical footprint and assembly compatibility, which is critical for drop-in replacement on an existing PCB. |
| Wiper Resistance (Typical) | 60 Ω | 60 Ω | Adds a fixed series resistance at the wiper that limits the minimum achievable resistance and can affect accuracy in low-resistance settings. |
| Resistance Tolerance | ±30 % | ±30 % | Indicates the part-to-part variation of the nominal end-to-end resistance, which impacts absolute accuracy in ratiometric and non-ratiometric applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5263BRUZ50 | AD5263BRUZ20 |
|---|---|---|
| Part Status | Active | Active |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 4 | 4 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 50k | 20k |
| Interface | I²C, SPI | I²C, SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 4.5V ~ 16.5V, ±4.5V ~ 7.5V | 4.5V ~ 16.5V, ±4.5V ~ 7.5V |
| Features | Cascade Pin, Selectable Address | Cascade Pin, Selectable Address |
| Tolerance | ±30% | ±30% |
| Temperature Coefficient(Typ) | 30ppm/°C | 30ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the primary difference between the AD5263BRUZ20 and AD5263BRUZ50?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5263BRUZ20 has a 20 kΩ nominal resistance, while the AD5263BRUZ50 has a 50 kΩ nominal resistance. Both are quad-channel, 256-position, I2C-compatible digital potentiometers from Analog Devices in a 24-lead TSSOP package.
Are the AD5263BRUZ20 and AD5263BRUZ50 pin-compatible?
Yes. Both devices are offered in the same 24-lead TSSOP (RU-24) package and share an identical pinout. The only difference is the internal resistor array value, so they are pin-to-pin compatible on the PCB.
Can the AD5263BRUZ20 be used as a drop-in replacement for the AD5263BRUZ50?
Not without circuit redesign. Although the packages and pinouts are identical, the 20 kΩ and 50 kΩ end-to-end resistances produce different wiper resistance, current handling, and voltage-divider ratios. The replacement is only valid if the surrounding circuit tolerates the changed resistance value.
What is the resolution and number of positions for both the AD5263BRUZ20 and AD5263BRUZ50?
Both devices provide 256 positions (8-bit resolution) per channel and integrate four independent digitally controlled variable resistors in a single package.
What digital interface do the AD5263BRUZ20 and AD5263BRUZ50 use?
Both parts use a 2-wire I2C-compatible serial interface. They support standard and fast I2C modes and include address pins that allow multiple devices to share the same bus.
What are the typical applications for the AD5263BRUZ20 versus the AD5263BRUZ50?
The AD5263BRUZ20 (20 kΩ) is typically chosen for lower-resistance signal conditioning where higher wiper current or lower thermal noise is beneficial. The AD5263BRUZ50 (50 kΩ) is often used in higher-impedance divider or feedback networks where lower power consumption and reduced loading are priorities. Final selection depends on the required resistance range and circuit impedance.
Do the AD5263BRUZ20 and AD5263BRUZ50 have the same operating voltage range and temperature range?
Yes. Both devices operate from a single 2.7 V to 5.5 V supply or dual ±2.7 V supplies, and both are specified over the extended industrial temperature range of −40 °C to +125 °C.
Are the AD5263BRUZ20 and AD5263BRUZ50 RoHS compliant?
Yes. The "Z" suffix in both part numbers indicates a RoHS-compliant, lead-free package as defined by Analog Devices. Both devices meet the same environmental compliance requirements.