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Home > Products > Development Boards, Kits, Programmers > Evaluation Boards > Sensor Evaluation Boards

Silicon Labs SI1140DK

Name: SI1140DK
Brand: Silicon Labs
SKU: SI1140DK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI1140DK

Manufacturer:: Silicon Labs

Category:: Sensor Evaluation Boards

Package:

Datasheet:: SI1140DK.pdf

Description:: BOARD EVAL SI1143-A10-GM

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,671

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Product details

Overview

SI1140DK from Silicon Laboratories is an evaluation and development kit for the Si1143 infrared proximity and ambient light sensor, featuring a C8051F800 microcontroller, nine OSRAM SFH4056 infrared emitters (40 mW, 22° half-angle), and USB-based I²C emulation for PC-hosted firmware development.

For engineers reviewing the SI1140DK datasheet, SI1140DK pinout, SI1140DK application, or SI1140DK equivalent, this kit supports real-time gesture recognition (Swipe Left/Right/Up/Down), XYZ position estimation from reflected IR, auto-ranging ALS/PS outputs, and rapid prototyping via the Si114x Programmer's Toolkit API and Performance Analysis Tool.

Technical Context

The SI1140DK implements a complete optical sensing subsystem: the onboard Si1143 sensor performs synchronized IR proximity sampling across three independent emitters (DS1, DS5, DS9), while the C8051F800 MCU executes firmware that computes linearized distance (Rad1–Rad3), 3D coordinates (X/Y/Z in mm), LED drive current (iLED1–iLED3), and gesture parameters using raw PS/ALS data.

Firmware enables AutoRanging for both ambient visible (VIS) and infrared (IR) channels, dynamically adjusting photodiode integration modes to avoid saturation and stitching outputs to eliminate mode-switching discontinuities in PS1–PS3 and VIS/IR streams.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Sensor	Si1143 infrared proximity and ambient light sensor with integrated IR LED drivers and photodiodes
Host MCU	C8051F800 8-bit mixed-signal microcontroller with USB interface and on-chip debug
IR Emitters	9× OSRAM SFH4056 LEDs; 3 actively used per measurement cycle (DS1, DS5, DS9); 40 mW power, 22° half-angle
USB Interface	Emulates I²C over USB for host PC communication; supports Si114x Programmer's Toolkit API and Performance Analysis Tool
Gesture Support	Four predefined gestures (Swipe Left/Right/Up/Down) with speed parameter (1–18 scale) derived from temporal PS signal gradients
Output Channels	20+ configurable generic data channels including Rad1–Rad3 (linearized distance), X/Y/Z (mm), iLED1–iLED3 (mA), VIS/IR/PS1–PS3 (AutoRanged 16-bit values)

Availability

SI1140DK is available at Aetrix Electronics and suitable for optical sensor evaluation, gesture-based UI prototyping, and proximity-driven industrial control systems requiring stable component supply and full software toolchain support.

Supply support for SI1140DK 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 is a U.S.-based semiconductor company specializing in low-power, mixed-signal ICs for sensing, timing, connectivity, and energy-efficient embedded systems.

The SI1140DK belongs to Silicon Labs' optical sensor development platform family, designed specifically to accelerate implementation of contactless human interface solutions using IR proximity, ambient light sensing, and multi-emitter spatial analysis.

FAQ

What is the primary function of the SI1140DK?

The SI1140DK is a development kit for evaluating and prototyping with the Si1143 optical sensor. It provides hardware (Si1143 sensor, C8051F800 MCU, nine IR emitters), firmware for XYZ position estimation and four-directional gesture recognition, and PC software tools including the Performance Analysis Tool and Si114x Programmer's Toolkit API - all centered on enabling rapid development of proximity- and gesture-aware applications using the SI1140DK.

Does the SI1140DK include the Si1140 or Si1143 sensor?

The SI1140DK contains the Si1143 sensor (U2 on the Si1143 Evaluation Board), not the Si1140. The kit name "SI1140DK" reflects legacy naming; documentation explicitly identifies the populated device as Si1143, and all firmware, channel definitions (e.g., PS1–PS3), and emitter configurations are validated for Si1143 operation within the SI1140DK.

Can the SI1140DK be used without writing custom code?

Yes. The SI1140DK supports immediate evaluation via the Si114x Performance Analysis Tool, which connects over USB to display real-time IR proximity (PS1–PS3), ambient light (VIS/IR), and gesture events without any code development. Command-line utilities included with the Si114x Programmer's Toolkit also allow configuration and data capture directly from terminal prompts - no compilation or firmware modification required for basic SI1140DK operation.

What software tools are supported with the SI1140DK?

The SI1140DK is supported by three official software tools: the Si114x Performance Analysis Tool (real-time graphical data visualization), the Si114x Programmer's Toolkit API (C-based PC-hosted development with I²C-over-USB abstraction), and the Silicon Labs IDE (for programming and debugging the onboard C8051F800 MCU). All tools are downloadable from silabs.com and require exclusive USB access - only one may connect to the SI1140DK at a time.

How does gesture detection work on the SI1140DK?

Gesture detection on the SI1140DK is implemented in firmware running on the C8051F800 MCU, analyzing temporal sequences of PS1, PS2, and PS3 measurements from the Si1143 sensor. Swipe gestures are identified by directional velocity profiles across adjacent emitters - e.g., Swipe Left triggers when PS1 rises then PS9 falls rapidly - with speed quantified on a 1–18 scale. Gesture output appears in the Performance Analysis Tool's 3D Gesture group window and is accessible via the SI1140DK's generic data channels G20–G23.

SI1140DK Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: QuickSense™

Packaging:: Box

Product Status:: Last Time Buy

Sensor Type:: Proximity, Infrared and Ambient Light

Sensing Range:: -

Interface:: USB

Sensitivity:: -

Voltage - Supply:: 5V, USB

Embedded:: Yes, MCU, 8-Bit

Contents:: Board(s)

Utilized IC / Part:: C8051F800, Si1143

SI1140DK FAQ

1.How can I place an order for SI1140DK through Aetrix?

Please submit a Request for Quotation (RFQ) for SI1140DK 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 SI1140DK reliable?

The price and inventory of SI1140DK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI1140DK is usually 5 days.

3.What payment methods are accepted for SI1140DK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI1140DK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI1140DK?

SI1140DK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI1140DK 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 SI1140DK?

For technical support, including SI1140DK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI1140DK requirements.

6.How does Aetrix verify that SI1140DK is sourced from the original manufacturer or authorized distributors?

All SI1140DK 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 SI1140DK meets industry standards.

7.What is the process for return or replacement of SI1140DK?

All SI1140DK units undergo pre-shipment inspection (PSI). If there is an issue with SI1140DK, 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 SI1140DK part is unused and in its original packaging.

Return procedure for SI1140DK:

1.Submit a request within 90 days.

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

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