TSL27721 datasheet(46/58 Pages) OSRAM

Part #	TSL27721

Description	Light-to-Digital Converter with Proximity Sensing

PDF	58 Pages

Scroll/Zoom	100%

Manufacturer	OSRAM [OSRAM GmbH]

Direct Link	http://www.osram.com

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46 / 58 page

Datasheet, Public

Page 45

[v2-00] 2023-Mar-30

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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 OSRAM EVM running at 400kbit/s, uses

1.5-k

Ω resistors. A 10-kΩ 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) 46 Page - OSRAM GmbH