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Renesas ISL29044AIROMZ-T7
- Part No.:
- ISL29044AIROMZ-T7
- Manufacturer:
- Renesas
- Category:
- Ambient Light, IR, UV Sensors
- Package:
- 8-LDFN
- Datasheet:
-
ISL29044AIROMZ-T7.pdf
- Description:
- SENSOR OPT AMBIENT 8 LDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,969
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Product details
Overview
ISL29044AIROMZ-T7 from Renesas (formerly Intersil) is a fully integrated ambient light and proximity sensor IC with built-in IR LED, I²C interface, dual independent ADCs, 3200Lux ALS range, and 547μs Prox conversion time-used in smartphone display dimming and proximity wake-up systems.
For engineers reviewing the ISL29044AIROMZ-T7 datasheet, ISL29044AIROMZ-T7 pinout, ISL29044AIROMZ-T7 application, or ISL29044AIROMZ-T7 equivalent, key selection factors include concurrent ALS/Prox measurement capability, sunlight-immune IR proximity sensing, programmable interrupt persistency (1/4/8/16), temperature compensation, and 2.25V–3.63V single-supply operation.
Technical Context
The ISL29044AIROMZ-T7 integrates photodiode-based ambient light sensing and modulated IR LED + reflected-light proximity detection on a single die, with two dedicated sigma-delta ADCs operating in parallel. It rejects 50Hz/60Hz flicker noise in ALS mode and ambient IR interference (e.g., sunlight) in Prox mode.
Interrupt logic supports independent ALS window thresholds and Prox upper thresholds, plus configurable persistence requiring 1, 4, 8, or 16 consecutive out-of-limit readings before asserting INT. The device uses both hardware INT pin assertion and software flag polling via I²C register reads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ALS Full-Scale Range | Up to 3200 Lux - supports indoor/outdoor display brightness control without saturation under direct sunlight. |
| Prox Conversion Time | 547 μs - enables fast proximity response for gesture-aware UI and call-termination detection. |
| Normal Operating Current | 133 μA typical (108 μA sensor + ~25 μA LED driver) - allows battery-constrained mobile devices to sustain frequent sensing cycles. |
| Power-Down Current | <1.0 μA - meets ultra-low-power standby requirements for always-on proximity wake-up functionality. |
| Supply Voltage Range | 2.25 V to 3.63 V - compatible with single-cell Li-ion/Li-poly and 3.3 V system rails without level-shifting. |
| Operating Temperature | −40°C to +85°C - qualified for consumer handheld and industrial embedded environments. |
Pinout & Package
Packaged in an 8-lead, clear, lead-free ODFN (Optical DFN) package with exposed pad for thermal performance and optical coupling efficiency. Dimensions: 2.0 mm × 2.0 mm × 0.55 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Positive supply input | Accepts 2.25–3.63 V; powers internal circuitry, ADCs, and IR LED driver. |
| GND | Ground reference | Common return for analog/digital sections and IR LED current sink. |
| SCL | I²C clock input | Supports standard/fast-mode I²C (up to 400 kHz); SMBus-compatible timing. |
| SDA | I²C data I/O | Open-drain bidirectional line; requires external pull-up to VDD. |
| INT | Interrupt output | Active-low, open-drain signal indicating ALS/Prox threshold violation per configured persistence. |
| EN | Enable input | Hardware shutdown control: logic high enables operation; low places device in <1 μA power-down state. |
| LED+ | IR LED anode connection | Internally connected to IR LED; no external component required-enables compact layout. |
| NC | No-connect terminal | Unbonded pad; must be left floating or tied to GND per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated IR LED + sensor die | Eliminates external LED placement, alignment, and driver design-reduces BOM count and optical calibration effort. |
| Dual independent sigma-delta ADCs | Enables true concurrent ALS and Prox sampling without interleaving delay or cross-talk, improving real-time responsiveness. |
| 50/60 Hz flicker rejection | Ensures stable ALS output under fluorescent and AC-powered LED lighting-critical for accurate auto-brightness in office/home environments. |
| Sunlight-immune proximity sensing | Uses modulated IR carrier and synchronous detection to reject broadband ambient IR, enabling reliable operation near windows or outdoors. |
| Programmable interrupt persistence | Prevents false triggers from transient noise by requiring 1/4/8/16 consecutive threshold violations-configurable per channel via I²C registers. |
Applications
| Smartphone Display Dimming | Laptop Keyboard Backlight Control |
|---|---|
Use Scenario: Automatic screen brightness adjustment based on ambient illuminance in varying lighting conditions (office, outdoor, dim room). IC Role / Device Role / Timing Role: ISL29044AIROMZ-T7 acts as the primary ambient light sensor with flicker rejection and 3200Lux dynamic range, delivering calibrated Lux values every 100ms via I²C. Use Value: Enables seamless user experience with no visible brightness jumps, even under 50/60Hz artificial lighting. | Use Scenario: Adaptive keyboard backlight activation only when user's hands are detected near the keyboard in low-light environments. IC Role / Device Role / Timing Role: ISL29044AIROMZ-T7 performs proximity sensing using its internal IR LED and ambient-IR-rejecting ADC, triggering backlight at <5 cm distance. Use Value: Extends battery life by avoiding continuous backlight operation while maintaining instant responsiveness. |
| Tablet PC Proximity Wake-up | Digital Camera Auto-Off Detection |
Use Scenario: Waking tablet from sleep when user lifts device toward face, and returning to sleep when placed face-down on surface. IC Role / Device Role / Timing Role: ISL29044AIROMZ-T7 delivers sub-millisecond Prox measurements with configurable interrupt persistence, enabling robust gesture-aware wake/sleep transitions. Use Value: Reduces false wake events from ambient IR noise and improves power efficiency over discrete LED+sensor solutions. | Use Scenario: Automatically powering down camera display and sensor after detecting absence of user presence for >3 seconds. IC Role / Device Role / Timing Role: ISL29044AIROMZ-T7 monitors proximity continuously in low-power mode (<1 μA), asserting INT only upon sustained absence of reflective target. Use Value: Achieves >20% longer battery runtime versus always-on polling with external microcontroller. |
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 VEML3235 | Separate ALS and Prox sensors; no integrated IR LED; requires external LED driver and optical isolation. | Higher design complexity for proximity function; lacks concurrent dual-ADC architecture. | Choose VEML3235 only if optical path separation or higher Prox resolution (>10-bit) is required. |
| ams TMD2755 | Integrated IR LED and dual ADCs; supports I²C; but ALS range limited to 60kLux and no flicker rejection. | Less robust under AC lighting; higher ALS gain drift across temperature vs. ISL29044AIROMZ-T7. | Select TMD2755 when extended Lux range is prioritized over flicker immunity and temperature stability. |
Compared with VEML3235 and TMD2755, the ISL29044AIROMZ-T7 uniquely combines concurrent dual-ADC sampling, 50/60Hz flicker rejection, and sunlight-immune proximity in a single 2×2 mm ODFN package-reducing PCB area, firmware overhead, and calibration burden for mobile UI responsiveness.
Availability
ISL29044AIROMZ-T7 is available at Aetrix Electronics and suitable for smartphone display management, laptop proximity wake-up, and digital camera auto-off applications requiring stable component supply, RoHS compliance, and long-term lifecycle support.
Supply support for ISL29044AIROMZ-T7 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
Renesas Electronics Corporation (acquired Intersil in 2017) is a global semiconductor leader specializing in microcontrollers, analog, power, and sensor solutions for automotive, industrial, and consumer markets.
The ISL29044AIROMZ-T7 belongs to Renesas' optical sensor family designed specifically for low-power, flicker-resistant ambient light and proximity sensing in space-constrained portable electronics.
FAQ
What is the maximum ambient light level the ISL29044AIROMZ-T7 can accurately measure?
The ISL29044AIROMZ-T7 has an ambient light sensor (ALS) full-scale range up to 3200 Lux. This range is optimized for indoor and shaded outdoor environments-including direct sunlight exposure-without saturation. Its sigma-delta ADC and internal gain scaling ensure linearity and repeatability across the entire range. The ISL29044AIROMZ-T7 does not support extended ranges beyond 3200 Lux, and exceeding this may cause clipping in raw output registers.
Does the ISL29044AIROMZ-T7 require an external infrared LED?
No, the ISL29044AIROMZ-T7 integrates a calibrated infrared LED on-die, eliminating the need for external LED components, drivers, or optical alignment. The internal LED is directly controlled by the device's proximity engine and synchronized with the proximity ADC sampling cycle. This integration reduces bill-of-materials cost and PCB footprint while ensuring consistent optical coupling-key for reliable proximity detection in thin mobile form factors.
How does the ISL29044AIROMZ-T7 reject 50Hz and 60Hz lighting flicker?
The ISL29044AIROMZ-T7 uses a dedicated sigma-delta ADC architecture with programmable integration time aligned to integer multiples of AC mains periods. By setting the ALS conversion time to 100 ms (or 16.67 ms × 6), it inherently averages out 50 Hz and 60 Hz intensity modulation. This hardware-level rejection occurs before digital output, ensuring stable Lux values without firmware-based filtering. The ISL29044AIROMZ-T7 implements this natively-no host MCU intervention is required.
What is the role of the EN pin on the ISL29044AIROMZ-T7?
The EN (Enable) pin on the ISL29044AIROMZ-T7 provides hardware-level power control: applying logic high activates normal operation (~133 μA), while logic low forces the device into ultra-low-power shutdown (<1.0 μA). This pin operates independently of I²C commands and overrides all internal states. It is commonly used in battery-powered systems to gate sensor activity during deep-sleep modes-ensuring zero leakage current without relying on software reset sequences. The ISL29044AIROMZ-T7 resumes operation within 1 ms of EN going high.
Can the ISL29044AIROMZ-T7 operate from a 1.8 V supply?
No, the ISL29044AIROMZ-T7 requires a minimum supply voltage of 2.25 V and supports up to 3.63 V. Operation below 2.25 V is outside specification and may result in undefined behavior, including failed I²C communication, inaccurate ADC conversions, or inability to drive the internal IR LED. For 1.8 V systems, level-shifting or a regulated 2.5 V/3.3 V rail is required. The ISL29044AIROMZ-T7 does not include internal LDO or charge pump for lower-voltage compatibility.
ISL29044AIROMZ-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-LDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Ambient
- Wavelength:
- -
- Proximity Detection:
- Yes
- Output Type:
- I2C
- Voltage - Supply:
- 2.25V ~ 3.63V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-ODFN (2.36x3.94)
ISL29044AIROMZ-T7 FAQ
1.How can I place an order for ISL29044AIROMZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL29044AIROMZ-T7 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 ISL29044AIROMZ-T7 reliable?
The price and inventory of ISL29044AIROMZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL29044AIROMZ-T7 is usually 5 days.
3.What payment methods are accepted for ISL29044AIROMZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL29044AIROMZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL29044AIROMZ-T7?
ISL29044AIROMZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL29044AIROMZ-T7 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 ISL29044AIROMZ-T7?
For technical support, including ISL29044AIROMZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL29044AIROMZ-T7 requirements.
6.How does Aetrix verify that ISL29044AIROMZ-T7 is sourced from the original manufacturer or authorized distributors?
All ISL29044AIROMZ-T7 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 ISL29044AIROMZ-T7 meets industry standards.
7.What is the process for return or replacement of ISL29044AIROMZ-T7?
All ISL29044AIROMZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with ISL29044AIROMZ-T7, 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 ISL29044AIROMZ-T7 part is unused and in its original packaging.
Return procedure for ISL29044AIROMZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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