A low-cost, low-noise, miniature IMU for high volume applications that need premium performance.

DMU11 is a low-cost six-degree-freedom inertial measurement unit, designed for both low and high-volume applications. This compact IMU achieves class-leading bias instability and random walk – Angular <10°/hr, 0.4°/√hr – Linear 0.05mg, 0.05m/s/√hr. It delivers ultra-accurate precision for complete motion sensing and control across three axes of angular rate and linear acceleration.

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Production Status: In Production
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Availability: Available
Customer Applications: New and existing applications

Supply Voltage3.2V to 5.2V
Angular Random Walk0.40º/√hr
Bias Instability<10°/hr, <0.05mg
Bandwidth (nominal)gyro 77±2 Acc 69±3
Operating Temperature-40°C to +85°C
Typ. Current Consumption85mA
Angular Rate Range±300˚/s
Axes of Acceleration3
Velocity Random Walk<0.05 m/s/√hr
Axes of Angular Rate3
Noise Spectral Density Gyro0.1 °/s rms
Noise Spectral Density Acc1mg rms
Rate SF over Temp±0.1%
Rate Bias Over Temperature±0.25 °/sec
Acc Bias over Temp+/- 3mg
Acc SF over Temp±0.1%
Baud Rate460800
Accelerometer Bias Instability0.05mg
Vibration Rectification Error-0.15°/s/g2 rms to 0.15°/s/g2 rms
I'm having trouble receiving data from the DMU11

The DMU11 Output Message is output on a RS422 Serial interface at 460,800 baud using a non-return to zero protocol. The DMU11 RS422 driver does not include a 120-ohm termination resistor which is normally associated with the RS422 interface. Therefore, if the user is not going to use the receive feature of the DMU11 (RX Lo and Rx Hi), then a 120 ohm termination resistor needs to be inserted between Pins 3 and 4 of the connector. Pins 3 and 4 should not be left unterminated since noise received on Pins 3 or 4 could cause the DMU11 to stop transmitting data on it transmit lines. Ideally, the termination resistor should be placed as close to the connector as possible.

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