ST LY330ALH User Manual

LY330ALH

MEMS motion sensor: high performance ±300 dps analog yaw-rate gyroscope

LGA-10 (3x5x1 mm)

Features

•2.7 V to 3.6 V single-supply operation

•Wide operating temperature range (-40 °C to +85 °C)

•High stability over temperature

•Analog absolute angular-rate outputs

•Integrated low-pass filters

•Low power consumption

•Sleep mode

•Embedded power-down

•Embedded self-test

•High shock and vibration survivability

•ECOPACK® RoHS and “Green” compliant

Applications

•Pointing devices, remote and game controllers

•Motion control with user interface

•GPS navigation systems

•Industrial and robotics

Description

The LY330ALH is a high performance low-power single-axis micro-machined gyroscope capable of measuring angular rate along the yaw axis.

It provides excellent temperature stability and high resolution over extended operating temperature range (-40 °C to +85 °C).

The LY330ALH has a full scale of ±300 dps and is capable of detecting rates with a -3 dB bandwidth up to 140 Hz.

The device includes a sensing element composed of a single driving mass, kept in continuous oscillation and capable of reacting, based on the Coriolis principle, when an angular rate is applied.

A CMOS IC provides the measured angular rate to the external world through an analog output voltage, allowing high levels of integration and production trimming to better match sensing element characteristics.

ST's family of gyroscopes leverages on the mature and robust manufacturing process already used for the production of micro-machined accelerometers.

ST is already in the field with several hundred million sensors which have received excellent acceptance from the market in terms of quality, reliability and performance.

The LY330ALH is available in a plastic land grid array (LGA) package, which ST successfully pioneered for accelerometers. Today ST has the widest manufacturing capability and strongest expertise in the world for production of sensors in plastic LGA packages.

Table 1: Device summary
Order code	Temperature Package		Packing
	range (°C)
LY330ALH	-40 to +85	LGA-10	Tray
		(3x5x1)
LY330ALHTR	-40 to +85	LGA-10	Tape
		(3x5x1)	and reel

February 2010

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www.st.com

Contents

LY330ALH

Contents
1 Block diagram ..........................................................................................................		5
2 Pin description .........................................................................................................		6
3 Mechanical and electrical characteristics .............................................................		7
3.1	Mechanical characteristics ............................................................................................	7
3.2	Electrical characteristics ................................................................................................	8
3.3	Absolute maximum ratings ............................................................................................	8
4 Terminology ............................................................................................................		10
4.1	Sensitivity ....................................................................................................................	10
4.2	Zero-rate level .............................................................................................................	10
4.3	Self-test .......................................................................................................................	10
4.4 Sleep mode, self-test and power-down .......................................................................		10
5 Application hints ....................................................................................................		11
5.1	Output response vs. rotation .......................................................................................	12
5.2 Soldering information ...................................................................................................		12
6 Package information .............................................................................................		13
6.1	LGA-10 package mechanical data ..............................................................................	13
7 Revision history .....................................................................................................		15

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LY330ALH

List of tables

List of tables
Table 1. Device summary .........................................................................................................................	1
Table 2. Pin description ............................................................................................................................	6
Table 3. Mechanical characteristics @ Vdd = 3 V, T = 25 °C unless otherwise noted .............................	7
Table 4. Electrical characteristics @ Vdd =3 V, T=25 °C unless otherwise noted ...................................	8
Table 5. Absolute maximum ratings .........................................................................................................	8
Table 6. Sleep mode, self-test and power-down mode configuration ....................................................	10
Table 7. LGA-10 (3x5x1 mm) package dimensions ...............................................................................	13
Table 8. Document revision history ........................................................................................................	15

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List of figures

LY330ALH

List of figures
Figure 1. Block diagram .........................................................................................................................	11
Figure 2. Pin connection ..........................................................................................................................	6
Figure 3. Electrical connections and external component values ..........................................................	11
Figure 4. Steady state position ..............................................................................................................	12
Figure 5. Output response vs. rotation ...................................................................................................	12
Figure 6. LGA-10 (3x5x1 mm) mechanical data ....................................................................................	13

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LY330ALH

Block diagram

1Block diagram

Figure 1: Block diagram

DRIVING MASS

			Feedback loop
+Ωz		CHARGE
	+	AMPLIFIER	SWITCHED	CONT. TIME
			CAPACITOR	LP FILTER	OUT Z
			LOW-PASS
	-		FILTER
		DEMODULATOR
				GND
	REFERENCE		TRIMMING	CLOCK	PHASE
			CIRCUITS		GENERATOR

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