Part A
AD5243BRMZ100
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5248 ПКС
- Package
- MSOP-10
- Series
- Сбор данных - цифровые потенциометры
Replacement verdict
Compatible functional replacement candidate
The AD5243BRMZ100 and AD5243BRM100 are functionally equivalent digital potentiometers sharing identical resistance values, channel count, interface type, and package configuration. The primary distinction lies in the lead-free RoHS-compliant construction of the AD5243BRMZ100 versus the lead-containing construction of the AD5243BRM100. For applications requiring RoHS compliance, the AD5243BRMZ100 is the preferred choice; otherwise, both devices are interchangeable in form, fit, and function.
Resistance Value
High match
Channel Count
High match
Interface Type
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
AD5243BRM100
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2710 ПКС
- Package
- MSOP-10
- Series
- Сбор данных - цифровые потенциометры
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5243BRMZ100 | AD5243BRM100 | Why it matters |
|---|---|---|---|
| Resistance Value | 100 kΩ | 100 kΩ | Determines the end-to-end resistance of the digital potentiometer and must match the target circuit's design value for proper signal scaling. |
| Number of Positions | 256 | 256 | Defines the wiper resolution; identical tap count ensures the same adjustment granularity in the application. |
| Interface Type | I2C | I2C | The control bus must match the host controller; both parts use I2C, so firmware and bus wiring remain compatible. |
| 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 direct substitution without supply changes. |
| Number of Channels | 2 | 2 | Channel count must match the number of independent resistance paths required by the circuit. |
| Package / Mounting Type | 10-Lead MSOP, Surface Mount | 10-Lead MSOP, Surface Mount | Footprint and mounting must be identical for drop-in PCB replacement without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | The wider temperature range of the Z-grade version supports harsher environments; the non-Z version is limited to commercial/industrial conditions. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Contains Lead (Non-RoHS) | RoHS compliance affects regulatory acceptance and solder process compatibility; the Z suffix denotes the lead-free variant. |
| Wiper Resistance | Typical 60 Ω | Typical 60 Ω | Wiper resistance contributes to error in the programmed resistance and should match for equivalent performance. |
| Supply Current | Typical 5 µA | Typical 5 µA | Low quiescent current is important for portable and low-power designs; matching values preserve power budget. |
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 | AD5243BRMZ100 | AD5243BRM100 |
|---|---|---|
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 2 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 100k | 100k |
| Interface | I²C | I²C |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Tolerance | -20%, +55% | -20%, +55% |
| Temperature Coefficient(Typ) | 35ppm/°C | 35ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What is the difference between the AD5243BRMZ100 and the AD5243BRM100?
The AD5243BRMZ100 is the RoHS-compliant, lead-free version of the AD5243BRM100. Both are dual-channel, 100 kΩ digital potentiometers in a 10-lead MSOP package with the same functional specifications. The "Z" suffix in AD5243BRMZ100 indicates Pb-free/RoHS compliance, while AD5243BRM100 is the non-RoHS version.
Are the AD5243BRMZ100 and AD5243BRM100 functionally interchangeable?
Yes, they are functionally identical. Both have the same 100 kΩ end-to-end resistance, 256-position resolution, I²C-compatible interface, and 10-lead MSOP package. The only difference is the RoHS compliance status indicated by the "Z" suffix.
What is the end-to-end resistance of the AD5243BRMZ100 and AD5243BRM100?
Both the AD5243BRMZ100 and AD5243BRM100 have a nominal end-to-end resistance of 100 kΩ, as indicated by the "100" in the part number.
What package do the AD5243BRMZ100 and AD5243BRM100 use?
Both devices are supplied in a 10-lead MSOP (Mini Small Outline Package), denoted by the "RM" code in the part number. The package dimensions and pinout are identical between the two versions.
What is the resolution and interface of the AD5243BRMZ100 and AD5243BRM100?
Both parts provide 256-position resolution and use a 2-wire I²C-compatible serial interface. They are dual-channel digital potentiometers with nonvolatile memory for wiper position storage.
Can the AD5243BRM100 be used as a drop-in replacement for the AD5243BRMZ100?
Yes, in terms of electrical function and package footprint, the AD5243BRM100 can replace the AD5243BRMZ100. However, if RoHS compliance is required for the target application or market, the AD5243BRMZ100 must be used instead, as the AD5243BRM100 is not Pb-free/RoHS compliant.
What is the operating voltage range for the AD5243BRMZ100 and AD5243BRM100?
Both devices operate from a single 2.7 V to 5.5 V supply, or from dual ±2.7 V supplies, as specified in the Analog Devices AD5243 datasheet. The operating voltage range is identical for both the RoHS and non-RoHS versions.
Which version should be selected for new designs, AD5243BRMZ100 or AD5243BRM100?
For new designs, the AD5243BRMZ100 is recommended because it is RoHS-compliant and Pb-free, meeting current environmental and regulatory requirements. The AD5243BRM100 is the legacy non-RoHS version and may be subject to restrictions in certain markets.