Part A
AD5175BRMZ-10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5022 Stückzahl
- Package
- MSOP-10
- Series
- Datenerfassung
Replacement verdict
Not a drop-in replacement
The AD5175BRMZ-10 and AD5172BRM10 are not drop-in replacements for each other. Although both are single-channel digital potentiometers in MSOP-10 packages, they differ fundamentally in digital interface, nonvolatile memory architecture, and rheostat configuration, requiring hardware and firmware redesign before any substitution can be considered.
Different digital interface
Different memory architecture
Different rheostat configuration
Different command protocol
Parts at a glance
Part B
AD5172BRM10
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5050 Stückzahl
- Package
- MSOP-10
- 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 | AD5175BRMZ-10 | AD5172BRM10 | Why it matters |
|---|---|---|---|
| Number of Positions | 1024 | 256 | Determines the resolution of the digital potentiometer; a higher number of positions provides finer adjustment granularity. |
| Interface Type | I2C | Up/Down (Pushbutton) | Defines how the host controller communicates with the device; incompatible interfaces prevent direct functional substitution. |
| Resistance Value | 10 kOhm | 10 kOhm | Sets the nominal end-to-end resistance, which must match the target circuit's impedance requirements. |
| Nonvolatile Memory | Yes (EEPROM) | Yes (OTP) | Determines whether the wiper setting is retained after power loss and whether it can be reprogrammed multiple times. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Must be compatible with the system power rail for the device to operate correctly. |
| Package Type | 10-Lead MSOP | 10-Lead MSOP | Physical footprint and pinout must match the PCB layout for a drop-in replacement. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +85°C | Defines the environmental conditions under which the device can reliably operate. |
| Wiper Resistance | 35 Ohm (typical) | 60 Ohm (typical) | Affects the accuracy and loading effects in the signal path; lower wiper resistance is generally preferred. |
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 | AD5175BRMZ-10 | AD5172BRM10 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Rheostat | Potentiometer |
| Number of Circuits | 1 | 2 |
| Number of Taps | 1024 | 256 |
| Resistance(Ohms) | 10k | 10k |
| Interface | I²C | I²C |
| Memory Type | Non-Volatile | OTP |
| Voltage - Supply | 2.7V ~ 5.5V, ±2.5V ~ 2.75V | 2.7V ~ 5.5V |
| Tolerance | ±15% | ±20% |
| Temperature Coefficient(Typ) | 35ppm/°C | 35ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
| Features | Selectable Address | - |
Frequently asked questions
What are the key differences between the AD5175BRMZ-10 and AD5172BRM10?
The AD5175BRMZ-10 is a single-channel, 1024-position digital potentiometer with an I2C interface and nonvolatile memory, while the AD5172BRM10 is a dual-channel, 256-position digital potentiometer with a 3-wire up/down interface and nonvolatile memory. The AD5175 offers higher resolution and a different control interface, whereas the AD5172 provides two independent channels in a smaller resolution.
Are the AD5175BRMZ-10 and AD5172BRM10 pin-compatible?
No, they are not pin-compatible. The AD5175BRMZ-10 is a single-channel device in a 10-lead MSOP package, while the AD5172BRM10 is a dual-channel device in a 10-lead MSOP package but with different pin functions. The pinouts differ due to the different channel counts and interface types, so they cannot be used as direct drop-in replacements.
What is the end-to-end resistance of each device?
The AD5175BRMZ-10 has a 10 kΩ end-to-end resistance. The AD5172BRM10 also has a 10 kΩ end-to-end resistance. Both are available in other resistance options, but the specific part numbers listed correspond to 10 kΩ variants.
What are the resolution and number of positions for each digital potentiometer?
The AD5175BRMZ-10 provides 1024 positions (10-bit resolution). The AD5172BRM10 provides 256 positions (8-bit resolution). This means the AD5175 offers finer adjustment steps than the AD5172.
What control interfaces do these digital potentiometers use?
The AD5175BRMZ-10 uses a 2-wire I2C-compatible serial interface. The AD5172BRM10 uses a 3-wire up/down (increment/decrement) interface with a chip select. The interface difference affects how each device is controlled in a system.
Do both devices have nonvolatile memory for wiper position retention?
Yes, both the AD5175BRMZ-10 and AD5172BRM10 include nonvolatile memory (EEPROM) that retains the wiper setting after power is removed. This allows the devices to power up in a known state without external intervention.
What are the operating voltage ranges for these devices?
The AD5175BRMZ-10 operates from a single 2.7 V to 5.5 V supply. The AD5172BRM10 operates from a single 2.5 V to 5.5 V supply. Both are suitable for low-voltage applications, but the AD5172 has a slightly lower minimum supply voltage.
What are the typical applications for each device?
The AD5175BRMZ-10 is used in applications requiring high-resolution digital adjustment, such as calibration and tuning systems, due to its 1024 positions and I2C interface. The AD5172BRM10 is used in dual-channel applications where two independent potentiometers are needed, such as dual-channel audio volume control or dual-channel gain adjustment, with a simpler up/down interface.