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LPY503AL
MEMS motion sensor: dual axis pitch and yaw ±30°/s analog gyroscope
Preliminary data
Features
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
2.7 V to 3.6 V single-supply operation Wide operating temperature range (-40 °C to +85 °C) High stability overtemperature Analog absolute angular-rate output Two separate outputs for each axis (1x and 4x amplified) Integrated low-pass filters Low power consumption Embedded power-down Embedded self-test High shock and vibration survivability ECOPACK RoHS and “Green” compliant (see Section 5)
®
LGA-16L (5x5x1.5mm)
The gyroscope is the combination of one actuator and one accelerometer integrated in a single micromachined structure. It includes a sensing element composed by single driving mass, kept in continuos oscillating movement and able to react when an angular rate is applied based on the Coriolis principle. A CMOS IC provides the measured angular rate to the external world through an analog output voltage, allowing high level of integration and production trimming to better match sensing element characteristics. ST’s gyroscope family leverages on robust and mature manufacturing process already used for the production of micromachined accelerometers. ST is already in the field with several hundreds million sensors with excellent acceptance from the market in terms of quality, reliability and performance. LPY503AL is provided in plastic land grid array (LGA) package. Several years ago ST pioneered successfully the usage of this package for accelerometers. Today ST has the widest manufacturing capability and strongest expertise in the world for production of sensor in plastic LGA package.
Applications
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Image stabilization for DSC DVC Motion control with user interface Industrial and robotics
Description
The LPY503AL is a low-power dual-axis micromachined gyroscope capable of measuring angular rate along pitch and yaw axes. It provides excellent temperature stability and high resolution over an extended operating temperature range (-40 °C to +85 °C). The LPY503AL has a full scale of ±30 °/s and is capable of detecting rates with a -3 dB bandwidth up to 140 Hz. Table 1. Device summary
Order code LPY503AL LPY503ALTR July 2009 Temperature range (°C) -40 to +85 -40 to +85
Package LGA-16 (5x5x1.5) LGA-16 (5x5x1.5)
Packing Tray Tape and reel 1/12
www.st.com 12
Doc ID 15804 Rev 2
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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Contents
LPY503AL
Contents
1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Mechanical and electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 2.2 2.3 Mechanical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 3.2 3.3 3.4 Sensitivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Zero-rate level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Self-test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 High pass filter reset (HP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 4.2 Output response vs. rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Soldering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5 6
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
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Doc ID 15804 Rev 2
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LPY503AL
Block diagram and pin description
1
Block diagram and pin description
Figure 1. +Ω x Block diagram
+
CHARGE AMPLIFIER
DEMODULATOR SWITCHED CAPACITOR LOW-PASS FILTER Optional LP/HP Filter Not amplified filtered output X GAIN 4x 4x OUT X (amplified)
-
X/Z DRIVING MASS
GAIN 4x Feedback loop
4x OUT Z(amplified)
+Ω z
+
CHARGE AMPLIFIER SWITCHED CAPACITOR LOW-PASS FILTER DEMODULATOR Optional LP/HP Filter
Not amplified filtered output Z
-
REFERENCE
TRIMMING CIRCUITS
CLOCK
PHASE GENERATOR
1.1
Pin description
Figure 2. Pin connection
Res
+Ω z
HP PD
14 13
Res
16 1
GND FILTVDD VCONT OUTX
+ Ω
(TOP VIEW) DIRECTION OF.