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Renesas ISL76682AROZ-T7
- Part No.:
- ISL76682AROZ-T7
- Manufacturer:
- Renesas
- Category:
- Ambient Light, IR, UV Sensors
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
ISL76682AROZ-T7.pdf
- Description:
- SENSOR OPT AMBIENT 6 WDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,913
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Product details
Overview
ISL76682AROZ-T7 from Renesas Electronics is an AEC-Q100 qualified automotive-grade light-to-digital sensor IC with integrated photodiode array, 16-bit integrating ADC, and I²C/SMBus interface. It delivers human-eye spectral response, 50/60Hz flicker rejection, and programmable lux ranges (0.015–64,000 lux). It operates from 2.25V to 3.3V supply at -40°C to +105°C and draws only 55µA typical in active mode - used for auto-dimming rearview mirrors and central display brightness control.
For engineers reviewing the ISL76682AROZ-T7 datasheet, ISL76682AROZ-T7 pinout, ISL76682AROZ-T7 application, or ISL76682AROZ-T7 equivalent, key selection criteria include its AEC-Q100 qualification, four selectable lux ranges, integrated IR rejection, 6 Ld ODFN package, and dual-mode timing (internal/external) for noise-immune ambient light sensing in harsh automotive environments.
Technical Context
The ISL76682AROZ-T7 implements a charge-balancing integrating ADC architecture optimized for rejecting periodic AC noise - achieving simultaneous 50Hz and 60Hz rejection via configurable integration time (e.g., 90ms for 16-bit mode). Its dual photodiode array enables independent ambient light sensing (ALS) and infrared (IR) sensing modes, selected via I²C command register bit 5.
Timing is flexibly managed in either Internal Timing Mode (using internal 650–800kHz oscillator and 4/8/12/16-bit counter) or External Timing Mode (synchronized to external sync_I2C pulses), allowing precise alignment with PWM dimming signals or system clocks to eliminate interference.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Lux Range | Four I²C-selectable full-scale ranges: 0.015–1,000 lux (Range 1) to 0.96–64,000 lux (Range 4) |
| ADC Resolution | Configurable 4-, 8-, 12-, or 16-bit output; 16-bit yields 65,535 max count with 90ms integration time |
| Power Consumption | 55µA typical active current; <0.5µA in software or auto power-down mode |
| Supply Voltage | 2.25V–3.3V main supply; I²C interface supports 1.7V–3.6V logic levels |
| Operating Temperature | -40°C to +105°C ambient - validated for under-hood and cabin automotive use |
| Spectral Response | Closely matches CIE photopic curve; >90% IR/UV rejection ensures sunlight-robust ALS accuracy |
| Interface | I²C/SMBus-compatible with user-selectable slave address (44h or 45h via A0 pin) |
Pinout & Package
ISL76682AROZ-T7 is housed in a 2.0mm × 2.1mm × 0.7mm 6-lead Optical Dual Flat No-lead (ODFN) package with exposed pad (GND or isolated). The compact footprint supports high-density automotive PCB layouts while maintaining optical coupling efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply input | Connects to 2.25–3.3V rail; powers analog core, ADC, and digital logic |
| GND | Ground reference | Common return path; exposed pad may be connected to GND for thermal and EMI performance |
| REXT | External scaling resistor node | Connects to GND via 500kΩ ±1% resistor to set internal oscillator frequency (725kHz typ.) and lux range scaling |
| A0 | I²C address LSB | Hardwired to GND (44h) or VDD (45h); determines one of two possible I²C slave addresses |
| SCL | I²C serial clock | Accepts 1.7–3.6V logic; supports up to 400kHz standard-mode I²C transactions |
| SDA | I²C serial data | Bidirectional open-drain line; sinks up to 5mA; requires external pull-up resistor |
Key Features
| Feature | Design Value |
|---|---|
| Human-eye spectral match | Photodiode array response aligned to CIE photopic curve - enables accurate lux calculation without calibration tables |
| Integrated 50/60Hz noise rejection | Charge-balancing ADC with configurable integration time (e.g., 90ms) inherently cancels mains-frequency flicker in fluorescent/LED lighting |
| Four programmable lux ranges | I²C-configurable full-scale ranges (0.015–64,000 lux) allow optimal resolution across indoor, twilight, and direct-sunlight conditions |
| Dual sensing mode (ALS/IR) | Single register bit (COMMAND[5]) switches between ambient light and infrared measurement - supports glare detection and proximity-aware dimming |
| Auto and software power-down | Automatic shutdown after each conversion (one-time mode) or I²C-commanded shutdown reduces quiescent current to <0.5µA |
Applications
| Auto-Dimming Rearview Mirror | Central Infotainment Display |
|---|---|
Use Scenario: Detects glare from headlights behind vehicle to automatically adjust mirror reflectivity. IC Role / Device Role / Timing Role: Ambient light sensor providing real-time lux input to mirror control MCU; uses Range 1 (0.015–1,000 lux) for low-light sensitivity. Use Value: Enables seamless transition between day/night modes with <10% variation across fluorescent, incandescent, and sunlight sources per datasheet Figure 5. | Use Scenario: Dynamically adjusts LCD backlight intensity based on cabin illumination during day/night driving cycles. IC Role / Device Role / Timing Role: Primary ALS input for display brightness algorithm; operates in continuous measurement mode with 16-bit resolution and 90ms integration. Use Value: Maintains consistent perceived brightness while minimizing power draw - 55µA active current extends system-level energy budget. |
| Instrument Cluster Dimming | Medical Light Monitoring |
Use Scenario: Controls LED backlighting of speedometer/tachometer dials to prevent driver distraction in dark environments. IC Role / Device Role / Timing Role: Automotive-grade light sensor interfacing directly to cluster microcontroller via I²C; leverages AEC-Q100 qualification and -40°C to +105°C operation. Use Value: Ensures reliable dimming response across extreme temperature cycling - validated per AEC-Q100 test conditions. | Use Scenario: Monitors ambient light in operating rooms or diagnostic equipment enclosures to maintain consistent visual conditions. IC Role / Device Role / Timing Role: Precision light-to-digital converter with temperature-compensated output and IR rejection - avoids false triggers from surgical lamps or IR-based monitoring systems. Use Value: Delivers ±10% output consistency across three light sources (fluorescent, incandescent, sunlight) as specified in Electrical Specs table. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ambient light sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VEML7700 | Higher max lux range (up to 120,000 lux); no IR sensing mode; 100µA typical supply current | Preferred for high-brightness outdoor HMI; lacks dual ALS/IR capability and AEC-Q100 qualification | Select VEML7700 when extended lux range outweighs automotive qualification and IR mode needs |
| ams TSL2591 | Wider dynamic range (0.0001–88,000 lux); separate visible and IR channels; 650µA typical active current | Better for ultra-low-light medical or scientific use; higher power limits battery-operated automotive modules | Choose TSL2591 only if sub-millilux sensitivity is required and power budget allows ~12× higher current vs. ISL76682AROZ-T7 |
Compared with VEML7700 and TSL2591, the ISL76682AROZ-T7 uniquely combines AEC-Q100 compliance, dual ALS/IR mode, <65µA active current, and flicker-rejecting integrating ADC - making it the optimal choice for cost-sensitive, thermally demanding automotive interior sensing where reliability and low power are critical.
Availability
ISL76682AROZ-T7 is available at Aetrix Electronics and suitable for automotive ambient light sensing, auto-dimming rearview mirrors, and central display and cluster dimming requiring stable component supply across extended temperature and lifecycle requirements.
Supply support for ISL76682AROZ-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 is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, and IoT markets with emphasis on functional safety and reliability.
The ISL76682 product line is designed specifically for automotive interior ambient light and infrared sensing - targeting auto-dimming mirrors, instrument clusters, and infotainment displays where AEC-Q100 qualification, low power, and flicker immunity are mandatory.
FAQ
What is the operating voltage range for ISL76682AROZ-T7?
The ISL76682AROZ-T7 operates from 2.25V to 3.3V on its VDD supply pin, while its I²C interface (SCL/SDA) supports logic levels from 1.7V to 3.6V - enabling interoperability with mixed-voltage microcontrollers. This dual-supply flexibility simplifies integration into automotive domains using 3.3V or 2.5V logic rails. The ISL76682AROZ-T7 maintains full specification compliance across this range, including 55µA typical supply current and -40°C to +105°C operation.
How does ISL76682AROZ-T7 reject 50Hz and 60Hz lighting flicker?
The ISL76682AROZ-T7 rejects 50Hz and 60Hz flicker using its integrating-type 16-bit ADC architecture with configurable integration time - for example, 90ms in 16-bit mode inherently averages out integer multiples of mains-frequency periods. This charge-balancing design eliminates periodic noise without requiring external filtering or firmware compensation. The ISL76682AROZ-T7 achieves this rejection natively, as confirmed by datasheet Figure 13 and Section 4.10, making it ideal for automotive cabins lit by fluorescent or dimmable LED sources.
What are the four lux ranges supported by ISL76682AROZ-T7 and how are they selected?
The ISL76682AROZ-T7 supports four I²C-programmable lux ranges: Range 1 (0.015–1,000 lux), Range 2 (0.06–4,000 lux), Range 3 (0.24–16,000 lux), and Range 4 (0.96–64,000 lux). These are selected by writing bits 1:0 of the Command Register (00h) - values 00b through 11b correspond to Ranges 1–4 respectively. Each range scales the ADC's full-scale output (65,535 counts) to match ambient conditions, preserving resolution without manual gain adjustment. This feature is documented in Table 8 and Section 4.5 of the ISL76682AROZ-T7 datasheet.
Does ISL76682AROZ-T7 support infrared (IR) light sensing in addition to ambient light?
Yes, the ISL76682AROZ-T7 supports dedicated infrared (IR) light sensing alongside ambient light sensing. Selection is controlled by bit 5 of the Command Register (00h): setting it to '1' configures the device for IR mode, which uses a distinct photodiode spectral response optimized for 850nm sources. Datasheet Section 4.5 and Table 5 confirm this dual-mode capability, and electrical specs on page 5 list separate IR count outputs (DATA_IR1–DATA_IR4) calibrated to 210 lux sunlight. This enables glare detection and proximity-aware dimming algorithms not possible with ALS-only sensors.
What package type and dimensions does ISL76682AROZ-T7 use?
The ISL76682AROZ-T7 uses a 6-lead Optical Dual Flat No-lead (ODFN) package measuring 2.0mm × 2.1mm × 0.7mm with an exposed thermal pad. This compact, surface-mount package is optimized for optical coupling in space-constrained automotive modules. Pin layout (top view) is VDD–GND–REXT–A0–SCL–SDA, with the exposed pad electrically isolated or connected to GND per layout guidelines in datasheet Section 6. The ODFN footprint is detailed in Figure 14 and Package Outline Drawing on page 16 of the ISL76682AROZ-T7 datasheet.
ISL76682AROZ-T7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Ambient
- Wavelength:
- -
- Proximity Detection:
- No
- Output Type:
- I2C
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-ODFN (2.1x2)
ISL76682AROZ-T7 FAQ
1.How can I place an order for ISL76682AROZ-T7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL76682AROZ-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 ISL76682AROZ-T7 reliable?
The price and inventory of ISL76682AROZ-T7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL76682AROZ-T7 is usually 5 days.
3.What payment methods are accepted for ISL76682AROZ-T7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL76682AROZ-T7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL76682AROZ-T7?
ISL76682AROZ-T7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL76682AROZ-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 ISL76682AROZ-T7?
For technical support, including ISL76682AROZ-T7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL76682AROZ-T7 requirements.
6.How does Aetrix verify that ISL76682AROZ-T7 is sourced from the original manufacturer or authorized distributors?
All ISL76682AROZ-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 ISL76682AROZ-T7 meets industry standards.
7.What is the process for return or replacement of ISL76682AROZ-T7?
All ISL76682AROZ-T7 units undergo pre-shipment inspection (PSI). If there is an issue with ISL76682AROZ-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 ISL76682AROZ-T7 part is unused and in its original packaging.
Return procedure for ISL76682AROZ-T7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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