SI1120 datasheet(5/20 Pages) SILABS

Nome de Peças	SI1120

Descrição Electrónicos	PROXIMITY/AMBIENT LIGHT SENSOR WITH PWM OUTPUT

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Fabricante Electrônico	SILABS [Silicon Laboratories]

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Si1120

Rev. 1.0

5

Table 3. Electrical Characteristics

Parameter

Symbol

Conditions / Notes

Min

Typ

Max

Units

IDD Shutdown

SC >VIH, VDD = 2.7 to 3.7,

T=27 °C

—0.1

1.0

µA

IDD Current Idle

SC = STX <VIL

—

90

150

µA

IDD Current During Transmit,

Not Saturated

VDD = 3.3 V, LED I = 400 mA

—

14

—

mA

IDD Current During Transmit,

Not Saturated

VDD =3.3 V, LED I=50 mA

—

3

—

mA

PRX Pulse Width Range

Tprx

VDD = 3.3 V

0.5

—

2500

us

PRX Logic High Level

VOH

IOH =–4mA

VDD–0.7

—

V

PRX Logic Low Level

VOL

IOL =4mA

—

0.6

V

Min. Detectable Reflectance Input

Emin

VDD = 3.3 V (Mode 0,2)

—

1

—

µW/cm2

Max. Detectable Reflectance Input

Emax1

VDD = 2.2 V (Mode 3)

—

12

—

mW/cm2

Max. Detectable Reflectance Input

Emax2

VDD = 3.7 V (Mode 3)

—

48

—

mW/cm2

Calibration Mode PRX Pulse Width Tpwcal

VDD = 3.3 V, Mode 1

—

7

—

us

TXO Leakage Current

Itxo_sd

VDD = 3.3 V, No strobe

—

0.01

1

µA

TXO Current (TX High Power)

Itxo

VDD =3.3 V,

TXO = 1 V (Mode 0)

—400

—

mA

TXO Current (TX Low Power)

Itxo

VDD =3.3 V,

TXO = 1 V (Mode 2,3)

—50

—

mA

Power Up Latency*

VDD =3.3 V

—

535

µs

Full-Scale Ambient Light

FSals1

VDD = 3.3 V, Mode 5

—

500

—

Lx

Full-Scale Ambient Light

FSals2

VDD = 3.3 V, Mode 6

—

100

—

kLx

Full-Scale Ambient Light

FSals3

VDD = 3.3 V, Mode 7

—

10

—

kLx

*Note: Refer to "2.2. Mode Selection" on page 7 for additional information.

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