TSL27721 datasheet(44/56 Pages) AMSCO

Part #	TSL27721

Description	Light-to-Digital Converter with Proximity Sensing

PDF	56 Pages

Scroll/Zoom	100%

Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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44 / 56 page

Page 44

ams Datasheet

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[v1-00] 2016-Aug-26

TSL2772 − Application Information Hardware

Figure 48:

Proximity Sensing Using Single Power Supply

VBUS in the above figures refers to the I²C bus voltage which is

either VDD or 1.8 V. Be sure to apply the specified I²C bus voltage

shown in the Ordering and Contact Information table for the

specific device being used.

The I²C signals and the Interrupt are open-drain outputs and

require pull.up resistors. The pull-up resistor (RP) value is a

function of the I²C bus speed, the I²C bus voltage, and the

capacitive load. The ams EVM running at 400 kbit/s, uses 1.5-k

resistors. A 10-k

Ω pull-up resistor (RPI) can be used for the

interrupt line.

TSL2772

INT

SDA

SCL

VDD

LDR

Voltage

Regulator

. 22 mF

IR LED

GND

VBUS

RPI

TSL27721 Datasheet(PDF) 44 Page - ams AG