LPY550AL Datasheet, PDF (3/12 Pages) STMicroelectronics – MEMS motion sensor: dual axis pitch and yaw ±500°/s analog output gyroscope

LPY550AL
Block diagram and pin description
1
Block diagram and pin description
Figure 1. Block diagram
+Ω _x
+Ω _z
CHARGE
AMPLIFIER
+
-
DEMODULATOR
SWITCHED
CAPACITOR
LOW-PASS
FILTER
X/Z
DRIVING MASS
CHARGE
AMPLIFIER
+
-
Feedback loop
DEMODULATOR
SWITCHED
CAPACITOR
LOW-PASS
FILTER
GAIN
4x
GAIN
4x
Optional
LP/HP
Filter
Not amplified
filtered output X
4x OUT X (amplified)
4x OUT Z(amplified)
Optional
LP/HP
Filter
Not amplified
filtered output Z
REFERENCE
TRIMMING
CIRCUITS
CLOCK
PHASE GENERATOR
1.1
Pin description
Figure 2. Pin connection
+Ω _z
+Ω _x
(TOP VIEW)
DIRECTION OF THE
DETECTABLE
ANGULAR RATES
14
HP 13
PD
ST
OUTZ
4xINZ 9
8
16
1 GND
FILTVDD
VCONT
OUTX
5 4xINX
6
(BOTTOM VIEW)
Doc ID 15808 Rev 2
3/12