Application hints

L3G4IS

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Doc ID 022612 Rev 1

6.1

Power supply configurations

The L3G4IS can be powered according to several different configurations, as reported in

Section 3. Depending on the particular power supply provided, either the user interface or

image stabilization modes are activated. The presence of a certain power supply

determines also which digital interface is available. In Figure 4 three possible power supply

configurations are reported to further explain the high level of flexibility allowed by the

component. It should be noted that when AVdd and HAVdd are removed they must be

connected to GND for proper working of the device.

6.1.1

Configuration 1

Figure 4.

L3G4IS power supply configuration 1

where:

●

AVdd is ON

●

HAVdd is ON

●

UI and OIS modes enabled

●

I2C (SCL/SDA) is supplied by AVdd)

●

DRDY/INT are supplied by AVdd

●

Vdd_IO_SPI can be connected to any voltage in the range of 1.71 V to HAVdd.

Note:

For complete external component placement please refer to Figure 3: L3G4IS electrical

connections and external component values.

SCL

DRDY

GND

SDA

Vdd_IO_SPI

1

8

12

5

49

13

16

TOP

VIEW

INT

Rpu = 10kOhm

Rpu

SCL

SDA

Pull-up to be added on I2C lines

14

SCL_OIS

CS_OIS

SDI/SDO_OIS

Res

Res

Res

AVdd HAVdd

Rpu = 10kOhm

Rpu

INT

DRDY

VddI2Cbus

VddI2Cbus

AM10237v1