L3GD20 데이터 시트보기 (PDF) - STMicroelectronics

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L3GD20

MEMS motion sensor: three-axis digital output gyroscope

STMicroelectronics 

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

+ ΩX

(TOP VIEW)

DIRECTIONS OF THE

DETECTABLE

ANGULAR RATES

13

16

RES 12

1

RES

RES

BOTTOM

VIEW

Vdd_IO

SCL/SPC

SDA/SDI/SDO

RES 9

8

4 SDO/SA0

5

AM10127V1

Doc ID 022116 Rev 1

7/44

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