ADIS16251_15 Datasheet, PDF (1/24 Pages) Analog Devices – Programmable Low Power Gyroscope

Programmable Low Power Gyroscope
ADIS16251
FEATURES
Yaw rate gyroscope with digital range scaling
±20°/sec, ±40°/sec, and ±80°/sec settings
14-bit digital gyroscope sensor outputs
12-bit digital temperature sensor output
Calibrated sensitivity and bias
In-system, auto-zero for bias drift calibration
Digitally controlled sample rate
Digitally controlled frequency response
Dual alarm settings with configurable operation
Embedded integration for short-term angle estimates
Digitally activated self-test
Digitally activated low power mode
Interrupt-driven wake-up
SPI-compatible serial interface
49 Hz sensor bandwidth
Auxiliary 12-bit ADC input and 12-bit DAC output
Auxiliary digital input/output
Single-supply operation: 4.75 V to 5.25 V
2000 g powered shock survivability
APPLICATIONS
Instrumentation control
Platform control and stabilization
Motion control and analysis
Avionics instrumentation
Navigation
Image stabilization
Robotics
FUNCTIONAL BLOCK DIAGRAM
AUX AUX
ADC DAC VREF
TEMPERATURE
SENSOR
ADIS16251
RATE
FILT
VCC
COM
GYROSCOPE
SENSOR
SELF-TEST
SIGNAL
CONDITIONING
AND
CONVERSION
CALIBRATION
AND
DIGITAL
PROCESSING
SPI
PORT
DIGITAL
CONTROL
POWER
MANAGEMENT
ALARM
AUXILIARY
I/O
CS
SCLK
DIN
DOUT
RST
Figure 1.
DIO1 DIO2
GENERAL DESCRIPTION
The ADIS16251 is a complete angular rate, measurement sys-
tem, available in a single compact package enabled by Analog
Devices, Inc. iSensor™ integration. By enhancing Analog Devices
iMEMS® sensor technology with an embedded signal processing
solution, the ADIS16251 provides factory-calibrated and tunable
digital sensor data in a convenient format that can be accessed
using a simple SPI serial interface. The SPI interface provides
access to measurements for the gyroscope, temperature, power
supply, and one auxiliary analog input. Easy access to calibrated
digital sensor data provides developers with a system-ready
device, reducing development time, cost, and program risk.
The device range can be digitally selected from three different
settings: ±20°/sec, ±40°/sec, and ±80°/sec. Unique charac-
teristics of the end system are accommodated easily through
several built-in features, including a single-command auto-zero
recalibration function, as well as a configurable sample rate and
frequency response. Additional features can be used to further
reduce system complexity, including:
• Configurable alarm function
• Auxiliary 12-bit ADC and DAC
• Two configurable digital I/O ports
• Digital self-test function
System power dissipation can be optimized via the ADIS16251
power management features, including an interrupt-driven
wake-up. The ADIS16251 is available in an 11 mm × 11 mm ×
5.5 mm, laminate-based, land grid array (LGA) package with a
temperature range of −40°C to +85°C.
Rev. A
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