Part A
ADIS16448BMLZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6833 ПКС
- Package
- Module
- Series
- Датчики движения - IMU (инерционные измерительные единицы)
Replacement verdict
Compatible functional replacement candidate
The ADIS16485BMLZ and ADIS16448BMLZ are both tactical-grade MEMS inertial measurement units from Analog Devices sharing the same 44-lead module package and SPI interface, but they differ in gyroscope and accelerometer dynamic ranges, bias stability, and environmental specifications. The ADIS16485BMLZ offers wider measurement ranges and tighter in-run bias stability, making it the higher-performance option, while the ADIS16448BMLZ provides a lower-range, cost-sensitive alternative. Neither device is a pin-for-pin drop-in substitute without firmware and range validation, so the ADIS16485BMLZ should be treated as a functional replacement candidate only after confirming dynamic range, bias stability, and operating temperature requirements against the target application.
Gyroscope Dynamic Range
Validation required
Accelerometer Dynamic Range
Validation required
Package Type
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
ADIS16485BMLZ
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6258 ПКС
- Package
- Module
- Series
- Датчики движения - IMU (инерционные измерительные единицы)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADIS16485BMLZ | ADIS16448BMLZ | Why it matters |
|---|---|---|---|
| Gyroscope Dynamic Range | ±450 °/s | ±1000 °/s | Determines the maximum angular rate the IMU can measure without saturation; the higher range of the ADIS16448 suits faster-rotating platforms. |
| Accelerometer Dynamic Range | ±5 g | ±18 g | Sets the maximum acceleration measurable without clipping; the ADIS16448 tolerates higher shock and vibration environments. |
| Gyroscope In-Run Bias Stability | 6 °/hr | 9.5 °/hr | Indicates long-term gyro drift; lower bias stability in the ADIS16485 yields better attitude accuracy over time. |
| Gyroscope Angle Random Walk | 0.3 °/√hr | 0.66 °/√hr | Represents short-term noise density; lower ARW in the ADIS16485 improves integration accuracy for attitude estimation. |
| Accelerometer In-Run Bias Stability | 0.1 mg | 0.2 mg | Reflects accelerometer drift; lower bias stability in the ADIS16485 supports more stable velocity and tilt estimates. |
| Accelerometer Velocity Random Walk | 0.029 m/s/√hr | 0.0375 m/s/√hr | Quantifies accelerometer noise density; lower VRW in the ADIS16485 improves position and velocity integration accuracy. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +85 °C | Defines the environmental envelope; the ADIS16485 supports higher-temperature applications where the ADIS16448 cannot be used. |
| Supply Voltage | 3.0 V to 3.6 V | 3.0 V to 3.6 V | Both devices share the same supply requirement, simplifying power-rail design when substituting one for the other. |
| Package | 24-lead Module (BMLZ) | 24-lead Module (BMLZ) | Identical module footprint and pinout allow drop-in mechanical substitution between the two parts. |
| Output Interface | SPI | SPI | Matching SPI interface means the same host firmware and bus topology can be reused across both devices. |
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 | ADIS16448BMLZ | ADIS16485BMLZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Sensor Type | Accelerometer, Barometric Pressure, Gyroscope, Magnetometer, 9 Axis | Accelerometer, Gyroscope, Magnetometer, 9 Axis |
| Output Type | SPI | SPI |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 105°C (TA) |
| Series | - | iMEMS®, iSensor™ |
Frequently asked questions
What are the primary differences between the ADIS16485BMLZ and the ADIS16448BMLZ?
The ADIS16485BMLZ is a tactical-grade ten-degree-of-freedom inertial sensor that integrates a triaxial gyroscope, triaxial accelerometer, triaxial magnetometer, and a barometer. The ADIS16448BMLZ is a ten-degree-of-freedom inertial sensor that integrates a triaxial gyroscope, triaxial accelerometer, triaxial magnetometer, and a barometer, but it is specified as a high-performance industrial-grade device. The key differences lie in the gyroscope and accelerometer performance specifications, dynamic range, bias stability, and operating temperature range, with the ADIS16485BMLZ offering tighter bias stability and broader dynamic range for tactical applications.
Are the ADIS16485BMLZ and ADIS16448BMLZ pin-to-pin compatible?
Yes. Both devices are housed in the same 24-terminal module package with identical footprint and pin assignments, allowing them to be used on the same PCB layout. However, electrical and performance differences must be validated against the respective datasheets before substitution.
What is the gyroscope dynamic range of each device?
The ADIS16485BMLZ gyroscope offers a selectable dynamic range of ±450°/sec, while the ADIS16448BMLZ gyroscope offers a selectable dynamic range of ±1000°/sec. The appropriate range should be selected based on the expected angular rates in the target application.
How do the accelerometer ranges compare between the two devices?
The ADIS16485BMLZ accelerometer provides a selectable range of ±5 g, whereas the ADIS16448BMLZ accelerometer provides a selectable range of ±18 g. Designs requiring higher acceleration measurement capability should account for this difference.
Do both devices support the same digital interface?
Yes. Both the ADIS16485BMLZ and ADIS16448BMLZ provide a SPI-compatible serial interface for configuration and data readback, along with additional synchronization and data-ready signals. Register maps and command structures should be verified against each device's datasheet, as they are not guaranteed to be identical.
What are the operating temperature ranges for these devices?
The ADIS16485BMLZ is specified for operation over the -40°C to +105°C temperature range. The ADIS16448BMLZ is specified for operation over the -40°C to +85°C temperature range. Applications requiring operation above +85°C should use the ADIS16485BMLZ.
Can the ADIS16448BMLZ be used as a drop-in replacement for the ADIS16485BMLZ?
Although the devices share the same package and pinout, they are not interchangeable without validation. The ADIS16485BMLZ provides tighter gyroscope bias stability and a wider operating temperature range, while the ADIS16448BMLZ provides a wider gyroscope and accelerometer dynamic range. System-level performance requirements, register compatibility, and environmental conditions must be verified before substitution.