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Silicon Labs SI1102EK

Name: SI1102EK
Brand: Silicon Labs
SKU: SI1102EK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI1102EK

Manufacturer:: Silicon Labs

Category:: Sensor Evaluation Boards

Package:

Datasheet:: SI1102EK.pdf

Description:: BOARD EVAL FOR SI1102

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:1,971

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Product details

Overview

SI1102EK from Silicon Laboratories is an evaluation kit built around the Si1102 infrared proximity sensor IC, enabling rapid prototyping of proximity detection systems using IR LED strobing and reflected-light measurement. It features on-board potentiometers for threshold (R1) and strobe frequency (R2) adjustment, a latched PRX output, blue indicator LED (D2), and CR2032 battery power.

For engineers reviewing the SI1102EK datasheet, SI1102EK pinout, SI1102EK application, or SI1102EK equivalent, this kit supports hands-on validation of proximity sensing behavior, threshold tuning, IR LED drive timing, and low-power battery-operated operation before system integration.

Technical Context

The SI1102EK implements a complete proximity sensing demonstration platform centered on the Si1102 IC, which integrates an IR LED driver, photodiode front-end, analog signal chain, and digital comparator logic. Its hardware includes user-adjustable analog controls (R1 for proximity detection threshold, R2 for IR strobe frequency) and discrete output signaling via the PRX pin and D2 LED.

Power is supplied by a CR2032 coin cell, with manual on/off control via S1; current draw is isolated from the Si1102 and LEDs when switched off. Header H1 provides direct access to six Si1102 pins-Ground, SREN, VDD, PRX, TXO, and FR-for external monitoring or interface.

Key Specifications

Parameter	Value and Actual Design Meaning
Core IC	Si1102 infrared proximity sensor with integrated IR LED driver and photodiode amplifier
Power Source	CR2032 3 V coin cell, manually switched via S1
Adjustable Threshold	Potentiometer R1 sets analog comparison threshold for reflected IR light magnitude
Strobe Frequency Control	Potentiometer R2 adjusts IR LED strobe frequency via Si1102 internal oscillator
Output Signaling	PRX pin latches low on threshold exceedance; drives blue LED D2 directly
Pin Access	Header H1 exposes 6 Si1102 pins: Ground, SREN, VDD, PRX, TXO, FR

Availability

SI1102EK is available at Aetrix Electronics and suitable for proximity sensor evaluation, IR-based gesture prototype development, and low-power battery-operated optical sensing applications requiring stable component supply during early design validation.

Supply support for SI1102EK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Silicon Laboratories Inc. is a U.S.-based semiconductor company specializing in mixed-signal ICs for timing, MCU, wireless, and sensor applications.

The Si1102 product line was designed specifically for low-power, self-contained infrared proximity and ambient light sensing in space-constrained consumer and portable devices.

FAQ

What is the primary function of the SI1102EK evaluation kit?

The SI1102EK evaluation kit demonstrates infrared proximity sensing using the Si1102 IC. It strobes an IR LED, measures reflected light intensity, and latches its PRX output low when the reflection exceeds a user-set threshold via potentiometer R1. The SI1102EK includes all necessary components-including CR2032 battery, switch S1, and indicator LED D2-for immediate functional validation without external equipment.

How is the proximity detection threshold adjusted on the SI1102EK?

The proximity detection threshold on the SI1102EK is adjusted using potentiometer R1 located on the bottom side of the board. Rotating R1 changes the reference voltage applied to the Si1102's internal comparator, thereby altering the minimum reflected IR light level required to trigger the PRX output latch. This allows real-time tuning of detection sensitivity during SI1102EK operation.

What signals are accessible through header H1 on the SI1102EK?

Header H1 on the SI1102EK provides access to six Si1102 pins: Pin 1 (Ground), Pin 2 (SREN), Pin 3 (VDD), Pin 4 (PRX), Pin 6 (TXO), and Pin 7 (FR). Pin 5 is not connected (N/C). These signals enable external probing, logic analysis, or connection to host controllers for deeper characterization of the SI1102EK's behavior beyond onboard LED indication.

Does the SI1102EK support ambient light sensing?

No-the SI1102EK is configured exclusively for infrared proximity sensing using the Si1102's PRX channel. While the underlying Si1102 IC supports ambient light sensing (ALS) via its ALS channel, the SI1102EK board does not route or expose ALS-related pins (e.g., ALSOUT), nor include the required photodiode configuration. The SI1102EK's design focuses solely on proximity detection with D2 as the visual indicator.

Is the SI1102EK suitable for new designs?

No-the SI1102EK is marked "Not Recommended for New Designs" in its official documentation. Silicon Labs discontinued support for the Si1102 family, and the SI1102EK evaluation kit is intended only for legacy evaluation, educational use, or replacement in existing deployed systems-not for incorporation into new product development or production designs.

SI1102EK Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: QuickSense™

Packaging:: Bulk

Product Status:: Obsolete

Sensor Type:: Proximity, Infrared

Sensing Range:: -

Interface:: -

Sensitivity:: -

Voltage - Supply:: -

Embedded:: No

Contents:: Board(s)

Utilized IC / Part:: Si1102

SI1102EK FAQ

1.How can I place an order for SI1102EK through Aetrix?

Please submit a Request for Quotation (RFQ) for SI1102EK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SI1102EK reliable?

The price and inventory of SI1102EK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI1102EK is usually 5 days.

3.What payment methods are accepted for SI1102EK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI1102EK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI1102EK?

SI1102EK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI1102EK order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SI1102EK?

For technical support, including SI1102EK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI1102EK requirements.

6.How does Aetrix verify that SI1102EK is sourced from the original manufacturer or authorized distributors?

All SI1102EK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SI1102EK meets industry standards.

7.What is the process for return or replacement of SI1102EK?

All SI1102EK units undergo pre-shipment inspection (PSI). If there is an issue with SI1102EK, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SI1102EK part is unused and in its original packaging.

Return procedure for SI1102EK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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