The L3G3200D is a low-power three-axis angular
rate sensor.
It includes a sensing element and an IC interface
able to provide the measured angular rate to the
external world through a digital interface
2
(I
C/SPI).
The sensing element is manufactured using a
dedicated micromachining process developed by
ST to produce inertial sensors and actuators on
silicon wafers. The IC interface is manufactured
using a CMOS process that allows a high level of
integration to design a dedicated circuit which is
trimmed to better match the sensing element
characteristics.
Applications
■ Gaming and virtual reality input devices
■ Motion control with MMI (man-machine
interface)
■ GPS navigation systems
■ Appliances and robotics
±2000 dps and is capable of measuring rates with
a user selectable bandwidth.
The L3G3200D is available in a plastic land grid
array (LGA)package and can operate within a
temperature range of -40 °C to +85 °C.
Table 1. Device summary
Order codeTemperature range (°C)PackagePacking
L3G3200D-40 to +85LGA-16 (3x3.5x1.0)Tray
L3G3200DTR-40 to +85LGA-16 (3x3.5x1.0)Tape and reel
December 2011Doc ID 022557 Rev 11/45
The L3G3200D has a full scale of ±250/±500/
This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to
change without notice.
The vibration of the structure is maintained by a drive circuitry in a feedback loop. The
sensing signal is filtered and appears as a digital signal at the output.
1.1 Pin description
Figure 2.Pin connection
(TOP VIEW)
DIRECTIONS OF THE
DETECTABLE
ANGULA RATES
+ Ω
RES
Z
X
+Ω
Y
GND
13
RES
14
RES
RES
RES
+Ω
X
RES
9
8
RES
Doc ID 022557 Rev 17/45
Vdd
16
BOTTOM
VIEW
6
INT1
DRDY/INT2
1
Vdd_IO
SCL/SPC
SDA/SDI/SDO
SDO/SA0
5
CS
AM10220V1
Block diagram and pin descriptionL3G3200D
Table 2.Pin description
Pin#NameFunction
SCL
SPC
SDA
SDI
SDO
SDO
SA0
(1)
Power supply for I/O pins
2
I
C serial clock (SCL)
SPI serial port clock (SPC)
2
C serial data (SDA)
I
SPI serial data input (SDI)
3-wire interface serial data output (SDO)
SPI serial data output (SDO)
2
C less significant bit of the device address (SA0)
I
2
C/SPI mode selection (1: SPI idle mode / I2C communication
I
enabled; 0: SPI communication mode / I2C disabled)
2. 10 nF (+/-10%), 25 V. 1 nF minimum value has to be guaranteed under 11 V bias condition.
3. Recommended 100 nF plus 10 μF capacitors.
(3)
Power supply
8/45Doc ID 022557 Rev 1
L3G3200DMechanical and electrical specifications
dpsHz(⁄
2 Mechanical and electrical specifications
2.1 Mechanical characteristics
@ Vdd = 3.0 V, T = 25 °C unless otherwise noted
Table 3.Mechanical characteristics
SymbolParameterTest conditionMin. Typ.
FSMeasurement rangeUser selectable
SoSensitivity
SoDr
DVoffDigital Zero-rate level
OffDr
NLNon linearity
RnRate noise density
Sensitivity change vs.
temperature
Zero-rate level change
vs temperature
(2)
(2)
FS = 250 dps8.75
FS = 2000 dps70
From -40 °C to +85 °C±2%
FS = 250 dps±10
FS = 2000 dps±20
Best fit straight line0.2% FS
(a)
.
(1)
±250
±2000
±0.04dps/°C
0.03
Max.Unit
dps±500
mdps/digitFS = 500 dps17.50
dpsFS = 500 dps±15
ODRDigital output data rate
Top
1. Typical specifications are not guaranteed.
2. Guaranteed by design.
Operating temperature
range
a. The product is factory calibrated at 3.0 V. The operational power supply range is specified in Table 4.
95/190/
380/760
Hz
-40+85°C
Doc ID 022557 Rev 19/45
Mechanical and electrical specificationsL3G3200D
2.2 Electrical characteristics
@ Vdd = 3.0 V, T = 25 °C unless otherwise noted
Table 4.Electrical characteristics
SymbolParameterTest conditionMin.Typ.
VddSupply voltage2.43.03.6V
Vdd_IOI/O pins supply voltage
IddSupply current6.1mA
(2)
(b)
.
(1)
1.71Vdd+0.1V
Max.Unit
IddSL
IddPdn
VIH
VIL
To p
1. Typical specifications are not guaranteed.
2. It is possible to remove Vdd maintaining Vdd_IO without blocking the communication busses, in this condition the
measurement chain is powered off.
3. Sleep mode introduce a faster turn-on time related to power down mode.
Supply current
in sleep mode
Supply current in powerdown mode
Digital high level input
voltage
Digital low level input
voltage
Operating temperature
range
(3)
Selectable by digital
interface
Selectable by digital
interface
2mA
5μA
0.8*Vdd_I
O
0.2*Vdd_I
O
-40+85°C
2.3 Temperature sensor characteristics
@ Vdd = 3.0 V, T = 25 °C unless otherwise noted
Table 5.Electrical characteristics
SymbolParameterTest conditionMin.Typ.
(b)
.
(1)
Max.Unit
V
V
Temperature sensor
TSDr
TODRTemperature refresh rate1Hz
To p
1. Typical specifications are not guaranteed.
10/45Doc ID 022557 Rev 1
output change vs.
temperature
Operating temperature
range
b. The product is factory calibrated at 3.0 V.
-1°C/digit
-
-40+85°C
L3G3200DMechanical and electrical specifications
SPC
CS
SDI
SDO
t
su(CS)
t
v(SO)
t
h(SO)
t
h(SI)
t
su(SI)
t
h(CS)
t
dis(SO)
t
c(SPC)
MSB IN
MSB OUT
LSB OUT
LSB IN
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
2.4 Communication interface characteristics
2.4.1 SPI - serial peripheral interface
Subject to general operating conditions for Vdd and Top.
Table 6.SPI slave timing values
(1)
Val ue
SymbolParameter
Min.Max.
tc(SPC)SPI clock cycle100ns
fc(SPC)SPI clock frequency10MHz
tsu(CS)CS setup time5
th(CS)CS hold time20
tsu(SI)SDI input setup time5
th(SI)SDI input hold time15
tv(SO)SDO valid output time50
th(SO)SDO output hold time5
tdis(SO)SDO output disable time50
Unit
ns
1. Values are guaranteed at 10 MHz clock frequency for SPI with both 4 and 3 wires, based on characterization results, not
tested in production.
(c)
Figure 3.SPI slave timing diagram
c. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both input and output ports.
Doc ID 022557 Rev 111/45
Mechanical and electrical specificationsL3G3200D
SDA
SCL
t
f(SDA)
t
su(SP)
t
w(SCLL)
t
su(SDA)
t
r(SDA)
t
su(SR)
t
h(ST)
t
w(SCLH)
t
h(SDA)
t
r(SCL)
t
f(SCL)
t
w(SP:SR)
START
REPEATED
START
STOP
START
2.4.2 I2C - Inter IC control interface
Subject to general operating conditions for Vdd and Top.
Table 7.I2C slave timing values
SymbolParameter
I2C standard mode
(1)
I2C fast mode
Min.Max.Min.Max.
(1)
Unit
f
(SCL)
t
w(SCLL)
t
w(SCLH)
t
su(SDA)
t
h(SDA)
t
r(SDA) tr(SCL)
t
f(SDA) tf(SCL)
t
h(ST)
t
su(SR)
t
su(SP)
t
w(SP:SR)
SCL clock frequency100400kHz
SCL clock low time4.71.3
SCL clock high time4.00.6
SDA setup time250100ns
SDA data hold time03.450.010.9µs
SDA and SCL rise time1000
SDA and SCL fall time300
START condition hold time40.6
Repeated START condition
setup time
4.70.6
STOP condition setup time40.6
Bus free time between STOP
and START condition
4.71.3
1. Data based on standard I2C protocol requirement, not tested in production.
2. Cb = total capacitance of one bus line, in pF.
Figure 4.I
2
C slave timing diagram
(d)
20 + 0.1C
20 + 0.1C
µs
(2)
b
(2)
b
300
ns
300
µs
d. Measurement points are done at 0.2·Vdd_IO and 0.8·Vdd_IO, for both ports.
12/45Doc ID 022557 Rev 1
L3G3200DMechanical and electrical specifications
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
2.5 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 8.Absolute maximum ratings
SymbolRatingsMaximum valueUnit
VddSupply voltage-0.3 to 4.8V
Vdd_IO I/O pins Supply voltage-0.3 to 4.8V
Vin
T
ESDElectrostatic discharge protection2 (HBM)kV
Note:Supply voltage on any pin should never exceed 4.8 V
Input voltage on any control pin (SCL, SDA, DEN,
CS)
Storage temperature range-40 to +125°C
STG
-0.3 to Vdd_IO +0.3V
SgAcceleration g for 0.1 ms10,000g
Doc ID 022557 Rev 113/45
Mechanical and electrical specificationsL3G3200D
2.6 Terminology
2.6.1 Sensitivity
An angular rate gyroscope is device that produces a positive-going digital output for
counterclockwise rotation around the sensible 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.
2.6.2 Zero-rate level
Zero-rate level describes the actual output signal if there is no angular rate present. Zerorate 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.
2.7 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-020.
Leave “Pin 1 Indicator” unconnected during soldering.
Land pattern and soldering recommendations are available at www.st.com/mems
.
14/45Doc ID 022557 Rev 1
Loading...
+ 31 hidden pages
You need points to download manuals.
1 point = 1 manual.
You can buy points or you can get point for every manual you upload.