SFH7770E6 datasheet(2/33 Pages) OSRAM

2 / 33 page

Sensor Overview

The SFH 7770 E6 comprises photodiodes

for both ambient light detection and

proximity sensing (See Fig. 2).

The

photodiodes are integrated into a single

ASIC

which

also

performs

the

A/D

conversion of the detected signals and

provides an interface for communication

with a host device via the I²C bus.

From functional points of view, the SFH

7770 E6 offers the following features and

properties, which are briefly introduced in

this

section:

Fig. 2: Circuitry of SFH 7770 E6.

Fig. 3: ALS and PS operating modes.

• Proximity sensor

• Ambient light sensor

• Operating modes : TRIGGERED,

STANDBY, FREE-RUNNING

• LED drivers

• I²C communication

• Pinning

For proximity sensing, up to three LEDs can

be driven simultaneously (see Fig 2). This

allows the operation of three independent

proximity sensing channels. At maximum

refresh rate, all three PS values are updated

every 10 ms, which makes the sensor ready

for reliable gesture recognition. All proximity

channels deliver continuous signals with 8bit

resolution. Therefore the PS may not only

be used for pure proximity detection, but

also for distance measurements.

The ambient light sensor is working

independently from the proximity sensor.

The ambient light readings are updated with

a rate down to 100 ms, depending on the

programmable settings (default: 500 ms).

Operating Modes

The SFH 7770 E6 can be operated in three

different modes (see Fig. 3), in which the

proximity resp. the ambient light function

can be used independently from each other.

The three basic modes are:

Pin #

Pin label

Description

LED 3

Cathode of LED 3

LED 2

Cathode of LED 2

LED 1

Cathode of LED 1

GND_LED

Separate LED ground

INT

Interrupt pin

VDD

Supply voltage

GND

VDD Ground

SCL

I²C bus clock line

SDA

I²C bus data line

N.C.

Not connected

Tab. 1: SFH 7770 E6 pinning.

February 27, 2012

page 2 of 33

SFH7770E6 数据表(PDF) 2 Page - OSRAM GmbH

SFH7770E6 数据表(HTML) 2 Page - OSRAM GmbH

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33

数据表下载