Part A
AD5242BRZ10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3626 PCS
- Package
- SOIC-16
- Series
- Acquisição de dados - Potenciômetros Digitais
Replacement verdict
Compatible functional replacement candidate
The AD5242BRZ10 and AD5242BR100 are functionally compatible dual-channel digital potentiometers from the same Analog Devices AD5242 family, sharing identical I²C interface, package, and operating specifications. The primary distinction is the end-to-end resistance value, which directly affects the application's signal range and must be validated against the target circuit requirements before substitution.
End-to-End Resistance
Not compatible
Interface Type
High match
Package Type
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD5242BR100
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3089 PCS
- Package
- SOIC-16
- 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 | AD5242BRZ10 | AD5242BR100 | Why it matters |
|---|---|---|---|
| End-to-End Resistance | 10 kΩ | 100 kΩ | Determines the nominal resistance range of the digital potentiometer and directly affects the current through and voltage across the wiper circuit; the two parts are not interchangeable without redesigning the surrounding network. |
| Number of Positions | 256 | 256 | Sets the resolution of the wiper adjustment; identical resolution means both parts offer the same number of programmable steps. |
| Number of Channels | 2 | 2 | Indicates how many independent potentiometer channels are available; matching channel count supports equivalent multi-channel circuit topologies. |
| Interface Type | I²C | I²C | Defines the digital communication protocol used to set the wiper position; identical interface allows the same host controller and firmware to drive either device. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Specifies the allowable power supply window; matching ranges ensure both parts operate in the same system power environment. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the ambient temperature limits for reliable operation; identical ratings mean both parts suit the same thermal environment. |
| Package / Mounting Type | 16-Lead SOIC, Surface Mount | 16-Lead SOIC, Surface Mount | Determines the physical footprint and assembly process; identical packages allow drop-in board placement without layout changes. |
| Wiper Resistance | 60 Ω typical | 60 Ω typical | Represents the on-resistance of the internal wiper switch; matching values preserve signal attenuation and loading characteristics. |
| Resistance Tolerance | ±30 % | ±30 % | Indicates the variation of end-to-end resistance from nominal; identical tolerance means comparable accuracy in resistance-dependent applications. |
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 | AD5242BRZ10 | AD5242BR100 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 2 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 10k | 100k |
| Interface | I²C | I²C |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V, ±2.3V ~ 2.7V | 2.7V ~ 5.5V, ±2.3V ~ 2.7V |
| Features | Selectable Address | Selectable Address |
| Tolerance | ±30% | -30%, +50% |
| Temperature Coefficient(Typ) | 30ppm/°C | 30ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the main difference between the AD5242BRZ10 and AD5242BR100?
The primary difference is the end-to-end resistance value of the digital potentiometer. The AD5242BRZ10 has a 10 kΩ nominal resistance, while the AD5242BR100 has a 100 kΩ nominal resistance. Both are dual-channel, 256-position, I2C-compatible digital potentiometers in the same 16-lead SOIC package.
Are the AD5242BRZ10 and AD5242BR100 pin-compatible?
Yes. Both devices are offered in the same 16-lead SOIC (R-16) package and share the same pinout. This allows them to be used on the same PCB footprint, provided the circuit is designed to accommodate the different nominal resistance values.
Can the AD5242BRZ10 and AD5242BR100 be used interchangeably in a design?
They are not directly interchangeable without design validation. The 10 kΩ and 100 kΩ resistance values affect the wiper resistance, bandwidth, power dissipation, and the resulting voltage or current in the target circuit. The appropriate resistance value must be selected based on the specific application requirements.
What is the resolution and number of positions for both the AD5242BRZ10 and AD5242BR100?
Both devices provide 256-position resolution per channel. They are dual-channel digital potentiometers, meaning each package contains two independently programmable potentiometers with 256 wiper positions each.
What digital interface do the AD5242BRZ10 and AD5242BR100 use?
Both devices use a 2-wire I2C-compatible serial interface. They support standard and fast I2C modes and include an address pin that allows multiple devices to be connected on the same bus.
Do the AD5242BRZ10 and AD5242BR100 have nonvolatile memory?
No. The AD5242 series does not include nonvolatile memory. The wiper position is volatile and is reset to a default position on power-up unless reprogrammed by the host controller.
What are the typical operating voltage ranges for the AD5242BRZ10 and AD5242BR100?
Both devices operate from a single supply of 2.7 V to 5.5 V, or from dual supplies of ±2.7 V. The digital logic inputs are compatible with 3 V and 5 V logic levels.
Which resistance value should be chosen, 10 kΩ or 100 kΩ, for a given application?
The choice depends on the circuit requirements. Lower resistance (10 kΩ) generally provides higher bandwidth, lower thermal noise, and better performance in low-impedance signal paths, but draws more current. Higher resistance (100 kΩ) reduces power consumption and loading effects in high-impedance circuits, but may increase noise and reduce bandwidth. The datasheet should be consulted for specific performance curves.