Download 4 Application hints - Repositorio Digital de Tesis PUCP

Block diagram and pin description
1
L3GD20H
Block diagram and pin description
Figure 1. Block diagram
+Ω
x,y,z
X+
CHARGE
AMP
Y+
MIXER
LOW-PASS
FILTER
D
I
G
I
T
A
L
Z+
Z-
A
D
C
1
M
U
X
YX-
T
E
M
P
E
R
A
T
U
R
E
DRIVING MASS
Feedback loop
REFERENCE
TRIMMING
CIRCUITS
FIFO
S
E
N
S
O
R
F
I
L
T
E
R
I
N
G
I2C
SPI
CS
SCL/SPC
SDA/SDI/SDO
SDO/SA0
A
D
C
2
CONTROL LOGIC
&
INTERRUPT GEN.
CLOCK
&
PHASE GENERATOR
INT1
DEN
DRDY/INT2
AM12689V1
The vibration of the structure is maintained by a drive circuitry in a feedback loop. The
sensing signal is filtered and appears as digital signal at the output.
1.1
Pin description
+Ω
14
Y
GND
GND
RES
RES
RES
X
(TOP VIEW)
DIRECTIONS OF THE
DETECTABLE
ANGULAR RATE
Vdd
Cap
+Ω
16
13
1
BOTTOM
VIEW
9
5
8
Vdd_IO
SCL/SPC
SDA/SDI/SDO
SDO/SA0
CS
6
DRDY/INT2
X
INT1
1
Z
DEN
+Ω
RES
Figure 2. Pin connection
AM12690V1
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DocID023469 Rev 2