Datasheet ADIS16136 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | ±450°/Sec Precision Angular Rate Sensor |
| Pages / Page | 2 / 1 — ±450°/sec Precision. Angular Rate Sensor. Silicon Anomaly. ADIS16136. … |
| Revision | A |
| File Format / Size | PDF / 63 Kb |
| Document Language | English |
±450°/sec Precision. Angular Rate Sensor. Silicon Anomaly. ADIS16136. PERFORMANCE ISSUES
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±450°/sec Precision Angular Rate Sensor Silicon Anomaly ADIS16136
This anomaly list describes the known bugs, anomalies, and workarounds for the ADIS16136. Analog Devices, Inc., is committed, through future silicon revisions, to continuously improve silicon functionality. Analog Devices tries to ensure that these future silicon revisions remain compatible with your present software/systems by implementing the recommended workarounds outlined here.
PERFORMANCE ISSUES Table 1. Alarm Variation with Temperature [er001] Background
The ADIS16136 provides user-programmable alarms for monitoring.
Issue
On units that have earlier date codes than 1146, the alarm trip points vary with temperature when using the unfiltered data option (ALM_CTRL[3] = 0).
Workaround
On units that have earlier date codes than 1146, use the filtered data option (set ALM_CTRL[3] = 1) to achieve best stability in the alarm trip points. On units that have date codes of 1146 or later, this issue has been fixed
Related Issues
None.
Table 2. GYRO_OUT Oscillation [er002] Background
The ADIS16136 provides angular rate output data through two registers: GYRO_OUT and GYRO_OUT2. GYRO_OUT represents the upper 16-bits of the angular rate data, while GYRO_OUT2 represents up the lower bits. The bits in GYRO_OUT2 capture the bit growth associated with the averaging/decimation filter stage. When the decimation rate is equal to zero, the bits in GYRO_OUT2 will not represent angular rate information. In general, this register configuration preserves a normal distribution for the noise that has an even distribution on each side of the gyroscope’s bias.
Issue
On some units that have Date Code 1317 (or lower), the signal processing experiences a quantization error that introduces peaks in the distribution at 1 LSB increments, in relation to the GYRO_OUT register. This behavior can influence bias stability during any thermal changes to the device.
Workaround
Units that have Date Code 1318 (and newer) will not experience this behavior.
Related Issues
None.
ANOMALY STATUS Reference Number Description Status Date Code
er001 Alarm variation with temperature Fixed 1146 er002 GYRO_OUT oscillation Fixed 1317
Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2011–2014 Analog Devices, Inc. All rights reserved.
Document Outline Performance Issues Anomaly Status
This anomaly list describes the known bugs, anomalies, and workarounds for the ADIS16136. Analog Devices, Inc., is committed, through future silicon revisions, to continuously improve silicon functionality. Analog Devices tries to ensure that these future silicon revisions remain compatible with your present software/systems by implementing the recommended workarounds outlined here.
PERFORMANCE ISSUES Table 1. Alarm Variation with Temperature [er001] Background
The ADIS16136 provides user-programmable alarms for monitoring.
Issue
On units that have earlier date codes than 1146, the alarm trip points vary with temperature when using the unfiltered data option (ALM_CTRL[3] = 0).
Workaround
On units that have earlier date codes than 1146, use the filtered data option (set ALM_CTRL[3] = 1) to achieve best stability in the alarm trip points. On units that have date codes of 1146 or later, this issue has been fixed
Related Issues
None.
Table 2. GYRO_OUT Oscillation [er002] Background
The ADIS16136 provides angular rate output data through two registers: GYRO_OUT and GYRO_OUT2. GYRO_OUT represents the upper 16-bits of the angular rate data, while GYRO_OUT2 represents up the lower bits. The bits in GYRO_OUT2 capture the bit growth associated with the averaging/decimation filter stage. When the decimation rate is equal to zero, the bits in GYRO_OUT2 will not represent angular rate information. In general, this register configuration preserves a normal distribution for the noise that has an even distribution on each side of the gyroscope’s bias.
Issue
On some units that have Date Code 1317 (or lower), the signal processing experiences a quantization error that introduces peaks in the distribution at 1 LSB increments, in relation to the GYRO_OUT register. This behavior can influence bias stability during any thermal changes to the device.
Workaround
Units that have Date Code 1318 (and newer) will not experience this behavior.
Related Issues
None.
ANOMALY STATUS Reference Number Description Status Date Code
er001 Alarm variation with temperature Fixed 1146 er002 GYRO_OUT oscillation Fixed 1317
Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2011–2014 Analog Devices, Inc. All rights reserved.
Document Outline Performance Issues Anomaly Status
