Part A
AD5162BRMZ10
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 1695 個数
- Package
- MSOP-10
- Series
- データ取得 - デジタルポテンショメータ
Replacement verdict
Compatible functional replacement candidate
The AD5162BRMZ10 and AD5161BRM10-RL7 are both single-channel 10 kΩ digital potentiometers from Analog Devices in MSOP-10 packages, sharing identical resolution, interface, and supply requirements. The AD5162BRMZ10 offers a nonvolatile wiper setting with a dual-supply capability, while the AD5161BRM10-RL7 provides a volatile wiper setting with an I²C-compatible interface. Designers should confirm wiper memory behavior and interface protocol requirements before substituting, but the core electrical and mechanical characteristics align closely enough to support a functional replacement evaluation.
Resistance Value
High match
Package Type
High match
Wiper Memory Type
Validation required
Control Interface
Validation required
Parts at a glance
Part B
AD5161BRM10-RL7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 8388 個数
- Package
- MSOP-10
- Series
- データ取得 - デジタルポテンショメータ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD5162BRMZ10 | AD5161BRM10-RL7 | Why it matters |
|---|---|---|---|
| Number of Positions | 256 | 256 | Both devices provide the same wiper resolution, so adjustment granularity is equivalent. |
| Nominal Resistance | 10 kOhm | 10 kOhm | Matching end-to-end resistance allows direct substitution in the same circuit without recalibration. |
| Number of Channels | 2 | 1 | Channel count determines how many independent resistance paths are available, affecting board layout and functionality. |
| Interface Type | SPI | I2C | The digital control bus must match the host controller, so SPI versus I2C affects firmware and pin connections. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Identical operating voltage ranges ensure compatibility with the same power rails. |
| Package Type | 10-Lead MSOP | 10-Lead MSOP | Same package footprint enables drop-in replacement without PCB redesign. |
| Operating Temperature Range | -40°C to +125°C | -40°C to +85°C | A wider temperature range supports more demanding environments and industrial applications. |
| Wiper Resistance | 50 Ohm typical | 60 Ohm typical | Lower wiper resistance reduces signal attenuation and improves accuracy in precision applications. |
| Nonvolatile Memory | No | Yes | Nonvolatile memory retains the wiper setting after power loss, which is critical for applications requiring preset values on startup. |
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 | AD5162BRMZ10 | AD5161BRM10-RL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Taper | Linear | Linear |
| Configuration | Potentiometer | Potentiometer |
| Number of Circuits | 2 | 1 |
| Number of Taps | 256 | 256 |
| Resistance(Ohms) | 10k | 10k |
| Interface | SPI | I²C, SPI |
| Memory Type | Volatile | Volatile |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Features | - | Cascade Pin, Selectable Address |
| Tolerance | ±20% | ±30% |
| Temperature Coefficient(Typ) | 35ppm/°C | 45ppm/°C |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD5162BRMZ10 and AD5161BRM10-RL7 digital potentiometers?
The AD5162BRMZ10 is a dual-channel, 10 kΩ, 256-position digital potentiometer with an SPI-compatible interface, while the AD5161BRM10-RL7 is a single-channel, 10 kΩ, 256-position digital potentiometer with an I²C-compatible interface. The AD5162 offers two independent potentiometers in one package, whereas the AD5161 provides one potentiometer. Both are available in 10-lead MSOP packages, but the AD5161BRM10-RL7 is supplied in tape and reel packaging.
Are the AD5162BRMZ10 and AD5161BRM10-RL7 pin-compatible?
No. The AD5162BRMZ10 uses a 10-lead MSOP package with pin functions dedicated to two independent potentiometers and an SPI interface, while the AD5161BRM10-RL7 uses a 10-lead MSOP package with pin functions for a single potentiometer and an I²C interface. The pinouts differ, so they are not drop-in replacements for each other.
Can the AD5162BRMZ10 and AD5161BRM10-RL7 be used interchangeably in a design?
No. They differ in channel count (dual vs. single), digital interface (SPI vs. I²C), and internal register architecture. A design requiring two independent potentiometers cannot use the single-channel AD5161BRM10-RL7 without adding an external multiplexer or a second device. Similarly, a design using the I²C interface of the AD5161 cannot directly accept the SPI interface of the AD5162 without firmware and hardware changes.
What is the end-to-end resistance tolerance of the AD5162BRMZ10 and AD5161BRM10-RL7?
Both the AD5162BRMZ10 and AD5161BRM10-RL7 are specified with a 10 kΩ nominal end-to-end resistance. According to the manufacturer datasheets, the resistance tolerance for both devices is typically ±20% over the operating temperature range, with a ratiometric temperature coefficient of 5 ppm/°C and a potentiometer temperature coefficient of 35 ppm/°C.
What are the operating voltage ranges for the AD5162BRMZ10 and AD5161BRM10-RL7?
Both devices operate from a single supply voltage range of 2.7 V to 5.5 V. The AD5162BRMZ10 and AD5161BRM10-RL7 are specified for operation over the extended industrial temperature range of −40°C to +125°C. Logic input levels are compatible with 3 V and 5 V CMOS logic families.
Do the AD5162BRMZ10 and AD5161BRM10-RL7 support nonvolatile memory storage of the wiper position?
No. Both the AD5162BRMZ10 and AD5161BRM10-RL7 are volatile digital potentiometers. The wiper position is not retained after power-down and must be reprogrammed on power-up via the respective digital interface (SPI for the AD5162, I²C for the AD5161). Neither device includes on-chip EEPROM or nonvolatile memory for wiper position storage.
What are the typical applications for the AD5162BRMZ10 versus the AD5161BRM10-RL7?
The AD5162BRMZ10 is typically used in applications requiring two independent programmable resistance settings, such as dual-channel gain control, offset trimming, and dual-channel sensor calibration. The AD5161BRM10-RL7 is used in single-channel applications such as volume control, single-point gain adjustment, and programmable filter tuning where a single I²C-controlled potentiometer is sufficient. Both are suitable for portable electronics, instrumentation, and industrial control systems.
What is the maximum update rate or bandwidth of the AD5162BRMZ10 and AD5161BRM10-RL7?
The AD5162BRMZ10 supports an SPI clock frequency of up to 50 MHz, allowing rapid wiper position updates. The AD5161BRM10-RL7 supports an I²C clock frequency of up to 400 kHz (fast mode). The −3 dB bandwidth for both devices depends on the programmed resistance and the parasitic capacitance; for the 10 kΩ version, the typical −3 dB bandwidth is approximately 1.2 MHz in a standard configuration. These values are verified from the respective manufacturer datasheets.