Part A
AD5220BRZ10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3519 PCS
- Package
- SOIC-8
- Series
- Data Acquisition - Digital Potentiometers
Replacement verdict
Compatible functional replacement candidate
The AD5220BRZ10 and AD5220BR50 are functionally compatible digital potentiometers sharing identical architecture, package, and interface characteristics. The primary distinction lies in their end-to-end resistance values, which directly affects circuit behavior and calibration requirements. Designers must verify that the resistance change aligns with the target application's specifications 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
AD5220BR50
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4908 PCS
- Package
- SOIC-8
- Series
- Data Acquisition - Digital Potentiometers
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5220BRZ10 | AD5220BR50 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 10 kΩ | 50 kΩ | Determines the nominal resistance range of the digital potentiometer and directly affects the current through and voltage across the wiper circuit in the target application. |
| Number of Positions | 128 | 128 | Defines the wiper resolution; identical tap count means both parts offer the same adjustment granularity for a given end-to-end resistance. |
| Number of Taps | 128 | 128 | Confirms the number of selectable wiper positions, which must match for pin-compatible drop-in substitution. |
| Interface Type | Up/Down (3-wire) | Up/Down (3-wire) | The control interface must be compatible with the host controller; both use the same simple increment/decrement scheme. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Determines compatibility with the system power rail; matching ranges allow the same supply design to be reused. |
| Supply Current | 0.4 µA typ | 0.4 µA typ | Affects power budget in low-power and battery-operated designs; identical quiescent current means no change in power consumption. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures the device operates reliably across the intended environmental conditions; matching ranges support the same application environments. |
| Package / Mounting | 8-Lead SOIC (Surface Mount) | 8-Lead SOIC (Surface Mount) | Package and mounting style must match for PCB footprint compatibility and drop-in replacement. |
| Wiper Resistance | ~60 Ω typ | ~60 Ω typ | Wiper resistance contributes to the total resistance in series with the load and can affect accuracy; values are similar but should be verified against the specific datasheet revision. |
| Resistance Tolerance | ±20 % | ±20 % | Tolerance affects the absolute resistance accuracy; matching tolerance means similar end-to-end variation, though the nominal values differ. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5220BRZ10 | AD5220BR50 |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Circuits | 1 | 1 |
| Number of Taps | 128 | 128 |
| Resistance(Ohms) | 10k | 50k |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Temperature Coefficient(Typ) | 800ppm/°C | 800ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Taper | Linear | - |
| Configuration | Potentiometer | - |
| Interface | Up/Down (U/D, CS) | - |
| Tolerance | ±30% | - |
Frequently asked questions
What is the main difference between the AD5220BRZ10 and AD5220BR50?
The primary difference is the end-to-end resistance value. The AD5220BRZ10 has a 10 kΩ nominal resistance, while the AD5220BR50 has a 50 kΩ nominal resistance. Both are single-channel, 128-position digital potentiometers from Analog Devices in an 8-lead SOIC package.
Are the AD5220BRZ10 and AD5220BR50 pin-compatible?
Yes. Both devices are offered in the same 8-lead SOIC (R-8) package and share the same pinout, including terminals A, B, and W, plus the up/down control, chip select, and power supply pins. This allows them to be used on the same PCB footprint.
Can the AD5220BRZ10 and AD5220BR50 be used interchangeably in a design?
They can be interchanged only if the circuit is designed to tolerate the different end-to-end resistance. The 10 kΩ and 50 kΩ versions produce different wiper resistance and different current levels for a given voltage, so the surrounding circuit values and performance must be validated for each variant.
What is the resolution of the AD5220BRZ10 and AD5220BR50?
Both devices provide 128 positions, which corresponds to a 7-bit resolution. The wiper can be set to any of 128 discrete tap points between terminal A and terminal B.
What supply voltage range do the AD5220BRZ10 and AD5220BR50 support?
Both devices operate from a single supply of 2.7 V to 5.5 V, making them suitable for 3 V and 5 V systems. The digital interface is compatible with standard CMOS logic levels.
How is the wiper position controlled on the AD5220BRZ10 and AD5220BR50?
The wiper position is controlled through a 3-wire up/down interface using the CS, U/D, and CLK pins. A high or low on the U/D pin determines the direction of the wiper movement for each clock pulse.
Do the AD5220BRZ10 and AD5220BR50 have nonvolatile memory?
No. Both devices are volatile digital potentiometers. The wiper position is not retained after power is removed, so the wiper must be initialized to the desired position after each power-up.
What are the typical applications for the AD5220BRZ10 and AD5220BR50?
Typical applications include volume control, gain adjustment, offset trimming, and programmable filter tuning. The 10 kΩ version is often used where lower resistance and higher current are needed, while the 50 kΩ version is used where lower power consumption and higher resistance are preferred.