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L3GD20 Просмотр технического описания (PDF) - STMicroelectronics
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L3GD20
MEMS motion sensor: three-axis digital output gyroscope
STMicroelectronics
L3GD20 Datasheet PDF : 44 Pages
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L3GD20
Block diagram and pin description
1
Block diagram and pin description
Note:
Figure 1. Block diagram
+Ω
x,y,z
X+
CHARGE MIXER LOW-PASS
Y+
AMP
FILTER
Z+
M
U
X
Z-
Y-
X-
DRIVING MASS
Feedback loop
T
E
M
P
E
R
A
T
U
S
E
N
S
O
R
R
E
DF
A
D
C
1
I
G
I
T
A
I
L
T
E
R
I
LN
G
A
D
C
2
CS
I2C
SCL/SPC
SPI
SDA/SDO/SDI
SDO
REFERENCE
TRIMMING
CIRCUITS
CLOCK
FIFO
&
PHASE GENERATOR
CONTROL LOGIC
&
INTERRUPT GEN.
INT1
DRDY/INT2
AM10126V1
The vibration of the structure is maintained by 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
+Ω
Z
X
+Ω
Y
+ Ω
X
(TOP VIEW)
DIRECTION
S
OF THE
DETECTABLE
ANGULAR RATE
S
1
3
16
RE
S
12
1
RE
S
RE
S
BOTTOM
VIEW
Vdd_IO
S
CL/
S
PC
S
DA/
S
DI/
S
DO
RE
S
9
8
4
S
DO/
S
A0
5
AM10127V1
Doc ID 022116 Rev 1
7/44
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