LPY5150ALTR [STMICROELECTRONICS]
MEMS motion sensor: dual axis pitch and yaw ±1500°/s analog output gyroscope; MEMS运动传感器：双轴俯仰和偏航± 1500 ° / s的模拟输出陀螺仪
| 型号： | LPY5150ALTR |
| 厂家： | 
ST |
| 描述： | MEMS motion sensor: dual axis pitch and yaw ±1500°/s analog output gyroscope |
| 文件： | 总12页 (文件大小：226K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LPY5150AL
MEMS motion sensor:
dual axis pitch and yaw 1500°/s analog output gyroscope
Preliminary data
Features
■ 2.7 V to 3.6 V single-supply operation
■ Wide operating temperature range
(-40 °C to +85 °C)
LGA-16L (5x5x1.5mm)
■ High stability overtemperature
■ Analog absolute angular-rate output
The LPY5150AL has a full scale of 1500 °/s and
is capable of detecting rates with a -3 dB
bandwidth up to 140 Hz.
■ Two separate outputs for each axis
(1x and 4x amplified)
■ Integrated low-pass filters
■ Low power consumption
■ Embedded power-down
■ Embedded self-test
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 continuous oscillating
movement and able to react when an angular rate
is applied based on the Coriolis principle.
■ High shock and vibration survivability
®
■ ECOPACK RoHS and “Green” compliant
(see Section 5)
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.
Applications
■ Gaming applications
■ Pointing devices, remote and game controllers
■ Motion control with user interface
■ Industrial and robotics
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.
Description
The LPY5150AL is a low-power dual-axis
micromachined gyroscope capable of measuring
angular rate along pitch and yaw axes.
LPY5150AL 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.
It provides excellent temperature stability and
high resolution over an extended operating
temperature range (-40 °C to +85 °C).
Table 1.
Device summary
Order code
Temperature range (°C)
Package
Packing
LPY5150AL
-40 to +85
-40 to +85
LGA-16 (5x5x1.5)
LGA-16 (5x5x1.5)
Tray
LPY5150ALTR
Tape and reel
July 2009
Doc ID 15809 Rev 2
1/12
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
www.st.com
12
Contents
LPY5150AL
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
4
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
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 15809 Rev 2
LPY5150AL
Block diagram and pin description
1
Block diagram and pin description
Figure 1.
Block diagram
CHARGE
AMPLIFIER
+
DEMODULATOR
+Ω
X
SWITCHED
CAPACITOR
LOW-PASS
FILTER
Optional
LP/HP
Filter
-
Not amplified
filtered output X
GAIN
4x OUT X (amplified)
4x
X/Z
DRIVING MASS
GAIN
4x OUT Z(amplified)
4x
Feedback loop
Not amplified
filtered output Z
CHARGE
AMPLIFIER
+Ω
z
+
SWITCHED
CAPACITOR
LOW-PASS
FILTER
Optional
LP/HP
Filter
-
DEMODULATOR
TRIMMING
CIRCUITS
PHASE GENERATOR
REFERENCE
CLOCK
1.1
Pin description
Figure 2.
Pin connection
+Ω
z
14
16
HP 13
PD
1
5
GND
FILTVDD
VCONT
OUTX
ST
+Ω
x
OUTZ
4xINZ
(TOP VIEW)
9
4xINX
DIRECTION OF THE
DETECTABLE
ANGULAR RATES
6
8
(BOTTOM VIEW)
Doc ID 15809 Rev 2
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Block diagram and pin description
LPY5150AL
Table 2.
Pin #
Pin description
Pin name
Analog function
1
2
GND
FILTVDD
VCONT
OUTX
4xINX
4xOUTX
Vref
0V supply voltage
PLL filter connection pin #2
PLL filter connection pin #1
Not amplified output
3
4
5
Input of 4x amplifier
6
X rate signal output voltage (amplified)
Reference voltage
7
8
4xOUTZ
4xINZ
Z rate signal output voltage (amplified)
Input of 4x amplifier
9
10
11
OUTZ
ST
Not amplified output
Self-test (logic 0: normal mode; logic 1: self-test)
Power-down (logic 0: normal mode; logic 1: power-down
mode)
12
13
PD
HP
High pass filter reset (logic 0: normal operation mode;
logic1: external high pass filter is reset)
14,15
16
Res
Vdd
Reserved. Connect to Vdd
Power supply
4/12
Doc ID 15809 Rev 2
LPY5150AL
Mechanical and electrical specifications
2
Mechanical and electrical specifications
2.1
Mechanical characteristics
(1)
Table 3.
Symbol
FSA
Mechanical characteristics @ Vdd = 3 V, T = 25 °C unless otherwise noted
Parameter
Test condition
Min.
Typ.(2)
Max.
Unit
4x OUT (amplified)
OUT (not amplified)
4x OUT (amplified)
OUT (not amplified)
1500
6000
0.67
°/s
Measurement range
Sensitivity(3)
FS
SoA
So
°/s
mV/ °/s
mV/ °/s
0.167
Sensitivity change vs
temperature
SoDr
Delta from 25°C
0.037
%/°C
Voff
Vref
Zero-rate level(3)
1.23
1.23
V
V
Reference voltage
Zero-rate level change
Vs temperature
OffDr
Delta from 25°C
0.25
°/s/°C
NL
BW
Rn
Non linearity
Bandwidth(4)
Best fit straight line
1
140
% FS
Hz
Rate noise density
0.175
°/s / Hz
Operating
temperature range
Top
-40
+85
°C
1. The product is factory calibrated at 3 V. The operational power supply range is specified in Table 4.
2. Typical specifications are not guaranteed
3. Sensitivity and zero-rate level are not ratiometric to supply voltage
4. The product is capable of measuring angular rates extending from DC to the selected BW.
Doc ID 15809 Rev 2
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Mechanical and electrical specifications
LPY5150AL
2.2
Electrical characteristics
(1)
Table 4.
Symbol
Electrical characteristics @ Vdd =3 V, T=25 °C unless otherwise noted
Parameter
Supply voltage
Test condition
Min.
Typ.(2)
Max.
Unit
Vdd
Idd
2.7
3
3.6
V
Supply current
PD pin connected to GND
PD pin connected to Vdd
6.8
mA
Supply current in
power-down mode
IddPdn
VST
1
5
µA
Logic 0 level
Logic 1 level
Logic 0 level
Logic 1 level
0
0.2*Vdd
Vdd
Self-test input
V
0.8*Vdd
0
0.2*Vdd
Vdd
VPD
Top
Power-down input
V
0.8*Vdd
Operating temperature
range
-40
+85
°C
1. The product is factory calibrated at 3 V
2. Typical specifications are not guaranteed
2.3
Absolute maximum ratings
Stresses above those listed as “Absolute maximum ratings” may cause permanent damage
to the device. This is a stress rating only and functional operation of the device under these
conditions is not implied. Exposure to maximum rating conditions for extended periods may
affect device reliability.
Table 5.
Symbol
Absolute maximum ratings
Ratings
Maximum value
Unit
Vdd
Vin
Supply voltage
-0.3 to 6
-0.3 to Vdd +0.3
3000 g for 0.5 ms
10000 g for 0.1 ms
-40 to +125
V
V
Input voltage on any control pin (PD, ST)
A
Acceleration
TSTG
ESD
Storage temperature range
°C
kV
Electrostatic discharge protection
2 (HBM)
This is a mechanical shock sensitive device, improper handling can cause permanent
damage to the part
This is an ESD sensitive device, improper handling can cause permanent damage to
the part
6/12
Doc ID 15809 Rev 2
LPY5150AL
Terminology
3
Terminology
3.1
3.2
Sensitivity
An angular rate gyroscope is a device that produces a positive-going output voltage for
counterclockwise rotation around the sensitive axis considered. Sensitivity describes the
gain of the sensor and can be determined by applying a defined angular velocity to it. This
value changes very little over temperature and time.
Zero-rate level
Zero-rate level describes the actual output signal if there is no angular rate present. The
zero-rate level of precise MEMS sensors is, to some extent, a result of stress to the sensor
and therefore zero-rate level can slightly change after mounting the sensor onto a printed
circuit board or after exposing it to extensive mechanical stress. This value changes very
little over temperature and time.
3.3
Self-test
Self-test allows testing of the mechanical and electrical part of the sensor, allowing the
seismic mass to be moved by means of an electrostatic test-force. The self-test function is
off when the ST pin is connected to GND. When the ST pin is tied to Vdd, an actuation force
is applied to the sensor, emulating a definite Coriolis force. In this case the sensor output will
exhibit a voltage change in its DC level which is also dependent on the supply voltage.
When ST is active, the device output level is given by the algebraic sum of the signals
produced by the velocity acting on the sensor and by the electrostatic test-force. If the output
signals change within the amplitude specified in Table 3, then the mechanical element is
working properly and the parameters of the interface chip are within the defined
specifications.
3.4
High pass filter reset (HP)
The LPY5150AL provides the possibility to reset the optional external high pass filter by
applying a high logic value to the HP pad. This procedure ensures faster response,
especially during overload conditions. Moreover, this operation is suggested each time the
device is powered.
Doc ID 15809 Rev 2
7/12
Application hints
LPY5150AL
4
Application hints
Figure 3.
LPY5150AL electrical connections and external component values
+Ω
z
C2
10nF
10kOhm
R1
GND
GND
Vdd
470nF
+Ω
x
100 nF
10 µF
C1
(TOP VIEW)
DIRECTION OF THE
DETECTABLE
ANGULAR RATES
16
14
GND
1
5
HP
13
9
PD
ST
Not amplified
filtered output Z
Not amplified
filtered output X
LPY5150AL
(Top View)
R2
R2
C2
GND
C1
C1
6
8
C2
GND
R1
Vref
R1
Vref
Optional
High-pass filter
Recomended
Low-pass filter
Typical values:
R1 = 1MOhm
C1 = 4.7 µF
R2 = 33kOhm
C2 = 2.2 µF to 2.2 µF
Power supply decoupling capacitors (100 nF ceramic or polyester + 10 µF aluminum) should
be placed as near as possible to the device (common design practice).
The LPY5150AL allows band limiting of the output rate response through the use of an
external low pass filter (suggested) and/or high pass filter (optional) in addition to the
embedded low pass filter (f = 140 Hz).
t
4xOUTX and 4xOUTZ are respectively OUTX and OUTZ amplified outputs lines, internally
buffered to ensure low output impedance.
If external high pass or low pass filtering is not applied it is mandatory to short-circuit
respectively pad 4 to pad 5 and pad 9 to pad 10 when amplified outputs are used.
When only outputs are used (OUTX/Z), it is suggested to set pads 5 and 9 to fixed reference
voltage (Vref).
When high pass filter is applied to not amplified output (OUTx), it is recommended to buffer
the line before entering ADC for performance optimization.
The LPY5150AL IC includes a PLL (phase locked loop) circuit to synchronize driving and
sensing interfaces. Capacitors and resistors must be added at the FILTVDD and VCONT
pins (as shown in Figure 3) to implement a low-pass filter.
8/12
Doc ID 15809 Rev 2
LPY5150AL
Application hints
4.1
Output response vs. rotation
Figure 4.
Output response vs. rotation
+Ω
+Ω
z
z
+Ω
x
+Ω
x
Positive rotations as indicated by arrows
increase output value over Zero rate level:
Steady State position:
4xOUTX = 4xOUTZ = 1.23V
OUTX = OUTZ = 1.23V
+1500°/sec --> 4xOUTX, 4xOUTZ = 1.23V + SoA*1500 = 2.23V
+1500°/sec --> OUTX, OUTZ = 1.23V + So*1500 = 1.48V
4.2
Soldering information
®
The LGA package is compliant with the ECOPACK , RoHS and “Green” standard.
It is qualified for soldering heat resistance according to JEDEC J-STD-020C.
Leave “pin 1 indicator” unconnected during soldering.
Land pattern and soldering recommendations are available at www.st.com.
Doc ID 15809 Rev 2
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Package information
LPY5150AL
5
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
®
®
ECOPACK packages, depending on their level of environmental compliance. ECOPACK
specifications, grade definitions and product status are available at: www.st.com.
®
ECOPACK is an ST trademark.
Figure 5.
LGA-16: mechanical data and package dimensions
A1
A2
A3
C
1.46
0.16
1.5
1.6
0.057 0.059 0.063
1.33
0.052
0.2
0.3
5
0.24 0.006 0.008 0.009
0.012
D1
E1
L
4.85
4.85
5.15 0.191 0.197 0.203
5
5.15 0.191 0.197 0.203
0.8
3.2
1.6
0.031
0.126
0.062
L1
M
M1
M2
N
2.15 2.175 2.20 0.085 0.086 0.087
1.625
2.175
2.4
0.064
0.086
LGA-16 (5x5x1.5mm)
Land Grid Array Package
N1
T1
T2
R
0.094
0.031
0.8
0.475
1.2
0.5
0.525 0.019 0.020 0.021
1.6
0.047
0.063
S
0.1
0.15
0.05
0.1
0.004
0.006
0.002
0.004
h
k
j
7887555A
10/12
Doc ID 15809 Rev 2
LPY5150AL
Revision history
6
Revision history
Table 6.
Date
Document revision history
Revision
Changes
04-Jun-2009
06-Jul-2009
1
Initial release
Small text changes to improve readability.
2
Updated Table 4
Doc ID 15809 Rev 2
11/12
LPY5150AL
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Doc ID 15809 Rev 2
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