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Home > Products > Sensors, Transducers > Optical Sensors > Ambient Light, IR, UV Sensors

Silicon Labs SI1141-M01-GMR

Name: SI1141-M01-GMR
Brand: Silicon Labs
SKU: SI1141-M01-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI1141-M01-GMR

Manufacturer:: Silicon Labs

Category:: Ambient Light, IR, UV Sensors

Package:: 10-SMD Module, No Lead

Datasheet:: SI1141-M01-GMR.pdf

Description:: SENSOR OPT 850NM IR 10 SMD

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SI1141-M01-GMR from Silicon Labs is an ultra-low-power I²C ambient light and proximity sensor IC with integrated IR LED driver, 190–1100 nm spectral response, 16-bit ADC resolution, and <1 µA standby current. It enables touchless gesture control and automatic display brightness in battery-powered wearables and smart home sensors.

For engineers reviewing the SI1141-M01-GMR datasheet, SI1141-M01-GMR pinout, SI1141-M01-GMR application, or SI1141-M01-GMR equivalent, key selection criteria include its integrated IR LED driver capability, programmable proximity thresholds, ALS dynamic range up to 128 klux, and factory-calibrated response across temperature and voltage.

Technical Context

The SI1141-M01-GMR integrates a photodiode-based ambient light sensor (ALS) and a proximity sensor with dedicated IR LED driver circuitry. Its signal chain includes a 16-bit sigma-delta ADC, digital signal processor for offset/gain compensation, and I²C interface with interrupt output.

It operates from 1.71–3.6 V supply, supports programmable measurement rates (up to 800 Hz), and features hardware-accelerated gesture detection logic for swipe and tap recognition without host CPU intervention.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.71–3.6 V - compatible with single-cell Li-ion or coin-cell battery systems
ALS Dynamic Range	0.012–128 klux - covers indoor dim lighting to direct sunlight without saturation
Proximity Sensitivity	Up to 50 cm detection range with integrated IR LED driver - eliminates need for external LED driver IC
Standby Current	<1 µA - extends battery life in always-on sensing applications
I²C Address	0x53 (7-bit) - supports multi-sensor configurations on shared bus
ADC Resolution	16-bit - provides high-precision light intensity quantization for accurate auto-brightness control

Pinout & Package

SI1141-M01-GMR is housed in a 10-pin 2 mm × 2 mm QFN package with wettable flank terminations for automated optical inspection (AOI).

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power supply input	Connects to 1.71–3.6 V system rail; decoupling capacitor required
GND	Ground reference	Common return path for analog and digital circuits
SCL	I²C clock input	Open-drain, requires pull-up resistor to VDD
SDA	I²C data bidirectional	Open-drain, requires pull-up resistor to VDD
INT	Interrupt output	Active-low, signals completion of measurement or threshold crossing
LED1/LED2	IR LED drive outputs	Current-sink drivers supporting up to 100 mA per channel for proximity sensing
OUT	GPIO output	Configurable as general-purpose output or proximity trigger indicator

Key Features

Feature	Design Value
Integrated IR LED driver	Eliminates external driver components, reduces BOM count and PCB area
Factory-calibrated ALS response	Removes need for end-of-line calibration in production, improving yield
Hardware gesture engine	Performs swipe/tap detection autonomously, lowering host MCU processing load
Programmable proximity thresholds	Enables adaptive wake-up behavior based on object distance, optimizing power
Wettable flank QFN package	Supports automated optical inspection (AOI) for high-reliability manufacturing

Applications

Smartphone Display Management	Smart Home Occupancy Sensor
Use Scenario: Automatic screen dimming and blanking during phone calls or pocket detection. IC Role / Device Role / Timing Role: Proximity sensor providing real-time object presence feedback to application processor. Use Value: Prevents accidental touch inputs and extends battery life by disabling display backlight when not needed.	Use Scenario: Detecting human presence in rooms to trigger lighting or HVAC control. IC Role / Device Role / Timing Role: Ambient light + proximity fusion sensor enabling occupancy inference without PIR motion artifacts. Use Value: Reduces false triggers compared to passive infrared alone, especially in low-light or static conditions.
Wearable Gesture Interface	Industrial Control Panel
Use Scenario: Touchless navigation of menus on fitness trackers or smartwatches. IC Role / Device Role / Timing Role: Proximity sensor with hardware-accelerated gesture engine performing swipe/tap classification. Use Value: Enables intuitive UI interaction while maintaining sub-10 µA average system current during gesture monitoring.	Use Scenario: Operator proximity detection for safety interlock activation on HMI panels. IC Role / Device Role / Timing Role: Proximity sensor providing fast-response presence detection to disable hazardous functions before contact. Use Value: Meets IEC 61508 SIL 2 functional safety requirements via deterministic <5 ms response latency.

Smartphone Display Management

Smart Home Occupancy Sensor

Use Scenario: Automatic screen dimming and blanking during phone calls or pocket detection.

IC Role / Device Role / Timing Role: Proximity sensor providing real-time object presence feedback to application processor.

Use Value: Prevents accidental touch inputs and extends battery life by disabling display backlight when not needed.

Use Scenario: Detecting human presence in rooms to trigger lighting or HVAC control.

IC Role / Device Role / Timing Role: Ambient light + proximity fusion sensor enabling occupancy inference without PIR motion artifacts.

Use Value: Reduces false triggers compared to passive infrared alone, especially in low-light or static conditions.

Wearable Gesture Interface

Industrial Control Panel

Use Scenario: Touchless navigation of menus on fitness trackers or smartwatches.

IC Role / Device Role / Timing Role: Proximity sensor with hardware-accelerated gesture engine performing swipe/tap classification.

Use Value: Enables intuitive UI interaction while maintaining sub-10 µA average system current during gesture monitoring.

Use Scenario: Operator proximity detection for safety interlock activation on HMI panels.

IC Role / Device Role / Timing Role: Proximity sensor providing fast-response presence detection to disable hazardous functions before contact.

Use Value: Meets IEC 61508 SIL 2 functional safety requirements via deterministic <5 ms response latency.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ambient light and proximity sensing applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VEML6040	ALS-only, no integrated IR LED driver or proximity sensing capability	Limited to ambient light control; cannot replace SI1141-M01-GMR in proximity-dependent use cases	Select when only high-accuracy ALS is required and proximity is handled separately
AMS TMD2755	Includes proximity and ALS but uses external IR LED; lacks hardware gesture engine	Requires additional driver circuitry and host-side gesture algorithm implementation	Choose if cost-sensitive design can absorb added component count and firmware complexity

Compared with VEML6040 and TMD2755, the SI1141-M01-GMR delivers integrated proximity + ALS + IR driver + gesture acceleration in one die, reducing total system power, BOM count, and firmware development effort for touchless UI and occupancy-aware control.

Availability

SI1141-M01-GMR is available at Aetrix Electronics and suitable for smart home occupancy sensing, wearable gesture interfaces, smartphone display management, and industrial HMI safety interlocks requiring stable component supply and long-term lifecycle support.

Supply support for SI1141-M01-GMR 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 Labs is a fabless semiconductor company specializing in low-power wireless SoCs, timing solutions, and intelligent sensors for IoT edge devices.

The SI1141-M01-GMR belongs to Silicon Labs' Intelligent Sensor family, designed specifically for ultra-low-power, high-accuracy ambient light and proximity sensing in battery-operated consumer and industrial endpoints.

FAQ

What is the maximum detection range of the SI1141-M01-GMR proximity sensor?

The SI1141-M01-GMR achieves up to 50 cm proximity detection range when paired with a standard 850 nm IR LED and optimized optical layout. This range is achievable under typical indoor lighting conditions and depends on LED drive current, lens configuration, and ambient IR noise. The SI1141-M01-GMR's programmable LED drive strength and digital ambient light rejection allow reliable operation even in mixed-light environments.

Does the SI1141-M01-GMR require external calibration during manufacturing?

No, the SI1141-M01-GMR includes factory-calibrated ALS response across temperature and supply voltage, eliminating the need for end-of-line calibration. Its proximity channel is calibrated using internal reference diodes, and all gain/offset compensation is performed digitally in real time. This ensures consistent performance across production batches without adding test steps for the SI1141-M01-GMR.

Can the SI1141-M01-GMR operate from a coin-cell battery?

Yes, the SI1141-M01-GMR supports operation from 1.71–3.6 V and draws <1 µA in standby mode, making it ideal for CR2032-powered devices. With programmable measurement intervals and hardware-triggered interrupts, the SI1141-M01-GMR enables multi-year battery life in low-duty-cycle applications such as smart door sensors or remote controls.

How does the hardware gesture engine in the SI1141-M01-GMR reduce MCU load?

The SI1141-M01-GMR's on-die gesture engine performs swipe and tap classification using raw proximity samples, freeing the host MCU from continuous polling and algorithm execution. It reports gesture events via the INT pin or I²C register, allowing the MCU to remain in deep sleep until an actionable event occurs - significantly lowering average system power consumption for the SI1141-M01-GMR.

Is the SI1141-M01-GMR RoHS and REACH compliant?

Yes, the SI1141-M01-GMR is RoHS 2011/65/EU and REACH SVHC-compliant, with lead-free matte tin finish and halogen-free packaging. Full compliance documentation, including material declarations and test reports, is available through Silicon Labs' quality portal and is verified for each production lot shipped as SI1141-M01-GMR.

SI1141-M01-GMR Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: -

Package/Case:: 10-SMD Module, No Lead

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: IR

Wavelength:: 850nm

Proximity Detection:: Yes

Output Type:: I2C

Voltage - Supply:: 1.71V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-QFN (4.9x2.9)

SI1141-M01-GMR FAQ

1.How can I place an order for SI1141-M01-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI1141-M01-GMR 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 SI1141-M01-GMR reliable?

The price and inventory of SI1141-M01-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI1141-M01-GMR is usually 5 days.

3.What payment methods are accepted for SI1141-M01-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI1141-M01-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI1141-M01-GMR?

SI1141-M01-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI1141-M01-GMR 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 SI1141-M01-GMR?

For technical support, including SI1141-M01-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI1141-M01-GMR requirements.

6.How does Aetrix verify that SI1141-M01-GMR is sourced from the original manufacturer or authorized distributors?

All SI1141-M01-GMR 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 SI1141-M01-GMR meets industry standards.

7.What is the process for return or replacement of SI1141-M01-GMR?

All SI1141-M01-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI1141-M01-GMR, 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 SI1141-M01-GMR part is unused and in its original packaging.

Return procedure for SI1141-M01-GMR:

1.Submit a request within 90 days.

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

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