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

Silicon Labs SI1153-AA9X-GMR

Name: SI1153-AA9X-GMR
Brand: Silicon Labs
SKU: SI1153-AA9X-GMR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SI1153-AA9X-GMR

Manufacturer:: Silicon Labs

Category:: Ambient Light, IR, UV Sensors

Package:: 10-LLGA

Datasheet:: SI1153-AA9X-GMR.pdf

Description:: SENSOR OPT 525NM AMBIENT 10 LLGA

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Product details

Overview

SI1153-AA9X-GMR from Silicon Labs is a proximity/ambient light sensor IC with integrated 940 nm LED in LGA module package, featuring three independent LED drivers (5.6–360 mA), dual 23-bit ADCs, and I²C interface (up to 3.4 Mbps). It delivers <100 mlx ALS resolution under dark glass and supports proximity detection from <1 cm to 200 cm with lensing-used in display backlight control, wearables, and handset gesture interfaces.

For engineers reviewing the SI1153-AA9X-GMR datasheet, SI1153-AA9X-GMR pinout, SI1153-AA9X-GMR application, or SI1153-AA9X-GMR equivalent, key selection considerations include its on-die 940 nm bandpass filter (rejecting sunlight while passing LED energy), autonomous measurement mode with programmable thresholds, and ultra-low standby current (<500 nA) for battery-constrained designs.

Technical Context

The SI1153-AA9X-GMR integrates visible and infrared photodiodes with differential ADC architecture to reject flicker noise from artificial and natural light sources. Its signal processor enables host-independent proximity event detection via interrupt-driven threshold crossing, reducing host polling overhead.

It operates in forced or autonomous modes using a trimmable internal oscillator (±1% typical accuracy) and supports dual ADC range settings (up to 128 klx dynamic range) with independent integration time control per channel-critical for systems with asymmetric glass transmittance across visible and IR spectra.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	1.62–3.6 V - compatible with single-cell Li-ion and coin-cell power rails without external regulation.
Ambient Light Range	Up to 128 klx - achieved via dual ADC gain settings, enabling operation from dim indoor to direct sunlight conditions.
Proximity Detection Range	Up to 200 cm with lensing - enabled by three independently programmable LED drivers and L-shaped LED placement for triangulation.
ALS Resolution	<100 mlx - allows reliable sensing under dark-tinted or coated cover glass where visible transmission is reduced.
Standby Current	<500 nA - extends battery life in always-on proximity monitoring applications such as smartwatch wake-on-approach.
I²C Data Rate	Up to 3.4 Mbps - supports fast register access and burst reads for real-time interrupt handling in low-latency UI systems.
Operating Temperature	–40 to +85 °C - qualified for consumer electronics and industrial wearable environments without derating.
Integrated Filter	On-die 940 nm bandpass - rejects ambient solar IR and visible light, improving proximity SNR in outdoor-use devices.

Pinout & Package

SI1153-AA9X-GMR is housed in a 10-lead 2.85 × 4.9 × 1.2 mm LGA module with integrated 940 nm LED. The package includes exposed thermal pad for improved heat dissipation during high-current LED pulsing.

Pin/Terminal	Circuit Role	Design Meaning
VDD	Power supply input	1.62–3.6 V main supply; powers internal regulator, ADCs, and LED drivers.
GND	Ground reference	Common return path for analog/digital circuits and LED current sinks.
SCL	I²C clock input	Open-drain, requires external pull-up; controls timing of I²C transactions with host MCU.
SDA	I²C data bidirectional	Open-drain, shared bus line; carries register read/write data and ACK/NACK signals.
INT	Interrupt output	Open-drain active-low signal; asserts when proximity/ALS threshold crossed or measurement complete.
LED1 / LED2 / LED3	LED driver outputs	Current-sink outputs driving external or integrated IR LEDs; each programmable from 5.6–360 mA.
AD	Address select input	Pulled to VDD or GND to select primary (0x53) or alternate (0x52) I²C slave address.
LIGHT	Ambient light sensor output	Not a pin - internal photodiode node routed to ADC1; visible+IR channels reported separately over I²C.

Key Features

Feature	Design Value
Integrated 940 nm LED	Enables compact single-module proximity solution-no external LED placement or optical alignment required.
Programmable LED drive	30 discrete current levels per driver (5.6–360 mA) allow dynamic trade-off between detection range and battery lifetime.
Dual-channel ALS sensing	Separate visible and IR photodiode outputs enable host-based lux calculation with system-specific IR compensation algorithms.
Autonomous threshold interrupts	Reduces host CPU wake-ups by triggering INT only on user-defined proximity/ALS events-not on every measurement cycle.
25.6 µs LED pulse width	Minimizes average power draw while preserving peak optical power for reliable long-range detection.
Dark-glass operation	Sub-100 mlx ALS resolution permits accurate ambient sensing behind tinted, painted, or metallized cover lenses.

Applications

Smartphone Display Control	Wearable Gesture Interface
Use Scenario: Automatic display brightness adjustment and screen on/off based on ambient light and user proximity. IC Role / Device Role / Timing Role: Primary ALS and proximity sensor feeding real-time data to application processor for adaptive UI behavior. Use Value: Enables seamless transition between indoor/outdoor lighting and eliminates accidental touch activation during pocket carry.	Use Scenario: Touchless wrist-lift wake and air-gesture navigation in fitness trackers and smartwatches. IC Role / Device Role / Timing Role: Proximity-triggered system wake with sub-1 cm detection latency and autonomous interrupt generation. Use Value: Achieves <500 nA standby current during sleep, extending multi-day battery life without compromising responsiveness.
Tablet Backlight Management	AR/VR Headset Presence Sensing
Use Scenario: Dynamic backlight scaling across 0.1–128 klx ambient range while rejecting 100 Hz fluorescent flicker. IC Role / Device Role / Timing Role: Dual-ADC ALS sensor with independent integration time control per channel for spectral fidelity. Use Value: Maintains consistent perceived brightness under mixed lighting (sunlight + LED + incandescent) via host IR-compensated lux algorithm.	Use Scenario: User presence detection to pause rendering and conserve power when headset is removed. IC Role / Device Role / Timing Role: High-SNR proximity detector with on-die 940 nm filter rejecting ambient IR interference in uncontrolled environments. Use Value: Delivers reliable 20 cm detection through curved polycarbonate housing without external optics or recalibration.

Smartphone Display Control

Wearable Gesture Interface

Use Scenario: Automatic display brightness adjustment and screen on/off based on ambient light and user proximity.

IC Role / Device Role / Timing Role: Primary ALS and proximity sensor feeding real-time data to application processor for adaptive UI behavior.

Use Value: Enables seamless transition between indoor/outdoor lighting and eliminates accidental touch activation during pocket carry.

Use Scenario: Touchless wrist-lift wake and air-gesture navigation in fitness trackers and smartwatches.

IC Role / Device Role / Timing Role: Proximity-triggered system wake with sub-1 cm detection latency and autonomous interrupt generation.

Use Value: Achieves <500 nA standby current during sleep, extending multi-day battery life without compromising responsiveness.

Tablet Backlight Management

AR/VR Headset Presence Sensing

Use Scenario: Dynamic backlight scaling across 0.1–128 klx ambient range while rejecting 100 Hz fluorescent flicker.

IC Role / Device Role / Timing Role: Dual-ADC ALS sensor with independent integration time control per channel for spectral fidelity.

Use Value: Maintains consistent perceived brightness under mixed lighting (sunlight + LED + incandescent) via host IR-compensated lux algorithm.

Use Scenario: User presence detection to pause rendering and conserve power when headset is removed.

IC Role / Device Role / Timing Role: High-SNR proximity detector with on-die 940 nm filter rejecting ambient IR interference in uncontrolled environments.

Use Value: Delivers reliable 20 cm detection through curved polycarbonate housing without external optics or recalibration.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VEML7700	ALS-only sensor (no proximity or LED drivers); I²C interface; 0.005–65535 lux range; no integrated IR rejection filter.	Lacks proximity functionality and gesture capability; suitable only for pure ambient light control without object detection.	Select VEML7700 only when proximity is unnecessary and lowest-cost ALS-only solution is prioritized.
AMS TMD2755	ALS + proximity with integrated IR LED; 10-bit ADC; max 100 mA LED drive; no on-die 940 nm filter; 2×2 mm DFN package.	Lower resolution (10-bit vs. 23-bit), shorter max proximity range (~100 cm), and higher standby current (~1.2 µA).	Choose TMD2755 for cost-sensitive, space-constrained designs where 200 cm range and <500 nA standby are not required.

Compared with VEML7700 and TMD2755, SI1153-AA9X-GMR uniquely combines 23-bit ALS resolution, 200 cm lensed proximity, on-die 940 nm filtering, and <500 nA standby-making it optimal for premium wearables and sunlight-robust handhelds requiring both precision sensing and ultra-low-power operation.

Availability

SI1153-AA9X-GMR is available at Aetrix Electronics and suitable for smartphone display control, wearable gesture interfaces, and AR/VR headset presence sensing requiring stable component supply, full lifecycle support, and traceable sourcing.

Supply support for SI1153-AA9X-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 and sensing solutions for IoT, wearables, and consumer electronics.

The SI1153 product line was designed specifically for touchless human interface applications-delivering robust proximity, gesture, and ambient light sensing in compact, ultra-low-power modules for battery-operated portable devices.

FAQ

What is the primary function of the SI1153-AA9X-GMR?

The SI1153-AA9X-GMR is a proximity and ambient light sensor IC with integrated 940 nm LED in an LGA module. It performs simultaneous visible and infrared light sensing, proximity detection up to 200 cm with lensing, and gesture recognition-enabling touchless UI in smartphones, wearables, and AR/VR headsets. Its dual 23-bit ADCs and on-die 940 nm filter ensure high accuracy under direct sunlight and dark glass covers.

Does the SI1153-AA9X-GMR require external LEDs?

No, the SI1153-AA9X-GMR does not require external LEDs because it integrates a 940 nm LED within its 2.85 × 4.9 mm LGA module. This eliminates the need for separate LED placement, optical alignment, or additional PCB area-reducing bill-of-materials and simplifying mechanical design for compact consumer devices using the SI1153-AA9X-GMR.

What I²C address options does the SI1153-AA9X-GMR support?

The SI1153-AA9X-GMR supports two I²C slave addresses: 0x53 (default) and 0x52. The address is selected by pulling the AD pin to VDD (for 0x53) or GND (for 0x52). This dual-address capability allows multiple SI1153-AA9X-GMR sensors-or other compatible Si1153 variants-to coexist on the same I²C bus without address conflict.

How does the on-die 940 nm bandpass filter improve SI1153-AA9X-GMR performance?

The on-die 940 nm bandpass filter in the SI1153-AA9X-GMR rejects ambient visible light and out-of-band IR radiation-including strong solar IR components-while transmitting the 940 nm LED excitation energy. This significantly improves proximity signal-to-noise ratio in outdoor or brightly lit environments, enabling reliable detection where unfiltered sensors would saturate or produce false triggers.

What is the minimum detectable ambient light level for the SI1153-AA9X-GMR?

The SI1153-AA9X-GMR achieves <100 mlx minimum detectable ambient light level by increasing ADC integration time-enabling accurate ALS operation under dark-tinted, painted, or metallized cover glass. This capability is confirmed in the datasheet and directly supported by its dual photodiode architecture and 23-bit ADC resolution, making the SI1153-AA9X-GMR suitable for sealed industrial or premium consumer enclosures.

SI1153-AA9X-GMR Specifications

Product attributes: Attribute value

Manufacturer:: Silicon Labs

Series:: -

Package/Case:: 10-LLGA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: Ambient, Gesture

Wavelength:: 525nm

Proximity Detection:: Yes

Output Type:: I2C

Voltage - Supply:: 1.62V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 10-LGA (4.90x2.85)

SI1153-AA9X-GMR FAQ

1.How can I place an order for SI1153-AA9X-GMR through Aetrix?

Please submit a Request for Quotation (RFQ) for SI1153-AA9X-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 SI1153-AA9X-GMR reliable?

The price and inventory of SI1153-AA9X-GMR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SI1153-AA9X-GMR is usually 5 days.

3.What payment methods are accepted for SI1153-AA9X-GMR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SI1153-AA9X-GMR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SI1153-AA9X-GMR?

SI1153-AA9X-GMR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SI1153-AA9X-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 SI1153-AA9X-GMR?

For technical support, including SI1153-AA9X-GMR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SI1153-AA9X-GMR requirements.

6.How does Aetrix verify that SI1153-AA9X-GMR is sourced from the original manufacturer or authorized distributors?

All SI1153-AA9X-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 SI1153-AA9X-GMR meets industry standards.

7.What is the process for return or replacement of SI1153-AA9X-GMR?

All SI1153-AA9X-GMR units undergo pre-shipment inspection (PSI). If there is an issue with SI1153-AA9X-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 SI1153-AA9X-GMR part is unused and in its original packaging.

Return procedure for SI1153-AA9X-GMR:

1.Submit a request within 90 days.

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

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