Three-axis digital gyroscope
13 October 2010
Analogue, Mixed Signal, LSI
STMicroelectronics has extended its motion sensor portfolio with a high-performance, 3-axis gyroscope that embeds a FIFO (first-in first-out) memory block for smart power management.
The latest addition to ST’s MEMS portfolio, the L3G4200DH integrates an on-chip FIFO memory block that stores up to 96 levels, split in 32 sample sets of x-, y-, and z-axis data. This feature removes the need for continuous communication of the angular rate data between the sensor and the host processor, which can then spend more time in a sleep mode and decrease overall system power consumption. Application designers can program the FIFO for several different operating modes to raise a dedicated watermark (reference) interrupt when the memory is filled to a desired level.
All of ST’s MEMS gyroscopes employ a single sensing structure for motion measurement along all three orthogonal axes. This design approach eliminates all interference between the axes, increasing accuracy and reliability in a wide range of consumer and industrial applications, including advanced user interfaces for gaming and portable devices, motion tracking and camera image stabilisation.
The L3G4200DH boasts output stability over time and temperature, removing the need for any further calibration on the customer side. With advanced filtering capabilities for improved noise reduction and application flexibility, the user is able to limit the selected bandwidth through embedded high- and low-pass filters. The sensor and the ASIC interface are housed inside a 4 x 4 x 1 mm package. The gyroscope couples a 16-bit data output with a wide set of user-programmable full-scale ranges from ±250 dps up to ±2000 dps, with the low full-scale values for high accuracy of slow-motion sensing and the high range to detect and measure very fast gestures and movements.
For more information contact Robin Scholes, Avnet Kopp, +27 (0)11 809 6100, [email protected], www.avnet.co.za
Further reading:
High-speed PIN diode
Altron Arrow
Analogue, Mixed Signal, LSI
Vishay’s new high-speed Silicon PIN diode is able to detect both visible and near infra-red radiation over a wide spectrum range from 350 to 1100 nm.
Read more...
Analogue front end for sensor measurements
Electrocomp
Analogue, Mixed Signal, LSI
The NJU9103 AFE from Nisshinbo is a tiny analogue front end, with a 16-bit resolution ADC and up to 512 x signal amplification from the programmable gain amplifier.
Read more...
Single-channel software configurable I/O
Altron Arrow
Analogue, Mixed Signal, LSI
These use cases of the AD74115H include analogue output and input, digital output and input, resistance temperature detector (RTD), and thermocouple measurement capability.
Read more...
Current-sense amplifier with PWM rejection
Altron Arrow
Analogue, Mixed Signal, LSI
Analog Devices’ AD8410A is a high voltage, high bandwidth current-sense amplifier that features an initial gain of 20 V/V and a 2,2 MHz bandwidth.
Read more...
Combining a LPF and ADC driver for a 20 Vp-p signal
Altron Arrow
Analogue, Mixed Signal, LSI
A mixed-signal ADC driver circuit’s optimum performance depends on multiple variables: the driver’s settling time, the RC filter’s time constant, driving impedance, and the ADC sampling capacitor’s kickback current, all interact during acquisition time and contribute towards sampling errors.
Read more...
Pressure sensor with NextNav certification
EBV Electrolink
Analogue, Mixed Signal, LSI
STMicroelectronics’ LPS22DF pressure sensor has received a NextNav certification, which guarantees performance and reliability for geolocation and other types of applications.
Read more...
Reference design for Raspberry Pi analogue I/O
Analogue, Mixed Signal, LSI
Analogue Devices has published a reference design for ±10 V analogue input and ±15 V analogue output for Raspberry Pi platforms.
Read more...
Multi-zone distance sensor with 90° field of view
Avnet Silica
Analogue, Mixed Signal, LSI
STMicroelectronics has revealed a new FlightSense multi-zone distance sensor, with 90° field of view, to bring lifelike situational awareness to applications like home automation, computers, robots, and smart equipment.
Read more...
Six-axis IMU with Qvar sensing channel
Altron Arrow
Analogue, Mixed Signal, LSI
The LSM6DSV16X from STMicroelectronics is a high-performance, low-power six-axis IMU, featuring a three-axis digital accelerometer and a three-axis digital gyroscope.
Read more...
Bidirectional current-sense amplifier with PWM
RS South Africa
Analogue, Mixed Signal, LSI
The MAX49925 from Analogue Devices is a bidirectional current-sense amplifier (CSA) with an input common-mode range that extends from -40 to 76 V, making it suitable for 48 V HEV applications where there are large automotive transients.
Read more...
printer friendly version