Silicon Laboratories Si1102EK Manuale utente

Si1102-EK

Si1102 EVALUATION KIT USER’SGUIDE

1. Kit Contents

The Si1102 Evaluation Kit contains the following items:

Si1102EK evaluation board

CR2032 battery

2. Hardware Overview

The Si1102EK uses a Silicon Laboratories Si1102 to measure infrared proximity. The Si1102 strobes an infrared

LED at a frequency defined by the potentiometer labeled R2. The Si1102 measures the amount of infrared light

that reflects onto the Si1102 package. If the reflected light magnitude exceeds a threshold set by the potentiometer

labeled R1, the Si1102’s PRX output pin latches low, which turns on the blue LED labeled D2. The board is pow-

ered by a CR2032 battery, and the supply current can be connected or disconnected from the Si1102 and the LEDs

using the switch labeled S1. Header H1 provides access to the Si1102’s pins.

Figure 1 shows the Si1102EK board. Table 1 lists the signals connected to each of header H1’s pins.

For more information regarding Si1102 functionality, please see the Si1102 data sheet.

Figure 1. Si1102 Evaluation Kit Board

Table 1. Header H1 Pin-Out

H1 Pin # Si1102 Pin # Signal Name

1 2 Ground

26 SREN

35 VDD

41 PRX

5N/C N/C

63 TXO

77 FR

D2 – proximity

indicator LED D1 – infrared LED

Si1102

S1 – battery

power switch

R1 (bottom side of

board) – Potentiometer

controls the proximity

threshold

R2 (bottom side of

board) – Potentiometer

controls Si1102 infrared

LED strobe frequency

Si1102-EK

2 Rev. 0.1

3. Schematics

Figure 2. Si1102EK schematic

Si1102-EK

Rev. 0.1 3

NOTES:

Si1102-EK

4 Rev. 0.1

CONTACT INFORMATION

Silicon Laboratories Inc.

400 West Cesar Chavez

Austin, TX 78701

Tel: 1+(512) 416-8500

Fax: 1+(512) 416-9669

Toll Free: 1+(877) 444-3032

Please visit the Silicon Labs Technical Support web page:

https://www.silabs.com/support/pages/contacttechnicalsupport.aspx

and register to submit a technical support request.

Silicon Laboratories, Silicon Labs, and QuickSense are trademarks of Silicon Laboratories Inc.

Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders.

The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice.

Silicon Laboratories assumes no responsibility for errors and omissions, and disclaims responsibility for any consequences resulting from

theuseofinformationincludedherein.Additionally, Silicon Laboratories assumes no responsibility forthefunctioningofundescribed features

or parameters. Silicon Laboratories reserves the right to make changes without further notice. Silicon Laboratories makes no warranty, rep-

resentation or guarantee regarding the suitability of its products for any particular purpose, nor does Silicon Laboratories assume any liability

arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation conse-

quential or incidental damages. Silicon Laboratories products are not designed, intended, or authorized for use in applications intended to

support or sustain life, or for any other application in which the failure of the Silicon Laboratories product could create a situation where per-

sonal injury or death may occur. Should Buyer purchase or use Silicon Laboratories products for any such unintended or unauthorized ap-

plication, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages.

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