OPT4001DNPRQ1
Ambient Light Sensors Automotive high-speed high-precision digital ambient light sensor (ALS)
Inventory:4,596
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Part Number : OPT4001DNPRQ1
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Package/Case : USON (DNP)-6
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Brand : Texas Instruments
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Datesheet : OPT4001DNPRQ1 DataSheet (PDF)
Overview of OPT4001DNPRQ1
The OPT4001-Q1 is a light-to-digital sensor (single chip lux meter) that measures the intensity of visible light. To measure accurate light intensity, a specially engineered filter on the device tightly matches the photopic response of the human eye and rejects the near-infrared component from common light sources. The output of OPT4001-Q1 is semi-logarithmic with nine binary logarithmic full-scale light ranges along with a highly linear response within each range, bringing capability to measure from 400 µlux to 107 klux. This capability allows light sensor to have 28-bit effective dynamic range. The built-in automatic range selection logic dynamically adjusts the device gain settings based on the light level, providing the best possible resolution in all conditions without user input.
The engineered optical filter on the OPT4001-Q1 provides strong near infrared rejection. This filter aids in maintaining high accuracy when the sensor is placed under dark glass for aesthetic reasons.
The OPT4001-Q1 is designed for systems that require light level detection to enhance user experience and typically replaces low accuracy photodiodes, photo-resistors, and other ambient light sensors with underwhelming human eye matching and near infrared rejection.
The OPT4001-Q1 can be configured to operate with light conversion times from 600 µs to 800 ms in 12 steps, providing system flexibility based on application need. Conversion time includes the light integration time and ADC conversion time. Resolution of the measurement is determined by a combination of light intensity and integration time, effectively bringing in capability to measure down to 400 µlux of light intensity changes.
Digital operation is flexible for system integration. Measurements can be either continuous or triggered in one shots with register writes or a hardware pin. The device features a threshold detection logic, which allows the processor to sleep while the sensor watches for an appropriate wake-up event to report through the interrupt pin.
The sensor reports a digital output representing the light level over an I 2C and SMBus compatible, two-wire serial interface. An internal first-in-first-out (FIFO) on the output registers is available to read out measurements from the sensor at a slower pace while still preserving all data captured by the device. The OPT4001-Q1 also supports I 2C burst mode, thus helping the host read data from the FIFO with minimal I 2C overhead.
The low power consumption and low power-supply voltage capability of the OPT4001-Q1 helps enhance the battery life of battery-powered systems.
Key Features
- AEC-Q100 qualified for automotive applications:
- Temperature grade 2: –40°C to +105°C, T A
- Functional Safety-Capable
- Documentation available to aid functional safety system design
- High-precision, high-speed light-to-digital conversion over high-speed I 2C interface
- Precision optical filtering closely matches human eye with excellent near infrared (IR) rejection
- Semi-logarithmic output:
- Nine binary logarithmic full-scale light range
- Highly linear response within each range
- Built-in automatic full-scale light range selection logic, which switches measurement range based on input light condition for best possible resolution at all times
- 28 bits of effective dynamic range:
- 400 µlux to 107 klux
- 12 configurable conversion times:
- 600 µs to 800 ms for high-speed and high-precision applications
- External pin interrupt for hardware-synchronized trigger and interrupts
- Error correction code features for improved reliability in automotive use cases
- Internal FIFO for output registers with I 2C burst readout
- Low operating current: 30 µA
- Ultra-low power standby: 2 µA
- Operating temperature range: –40°C to +105°C
- Wide power-supply range: 1.6 V to 3.6 V
- 5.5-V tolerant I/O pins
- Selectable I 2C address
- Small-form factor: 2 mm × 2 mm × 0.65 mm
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
Rating | Automotive | Operating temperature range (°C) | -40 to 105 |
Interface type | I2C | Input type | Light |
Warranty & Returns
Warranty, Returns, and Additional Information
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QA & Return Policy
Parts Quality Guarantee: 365 days
Returns for refund: within 90 days
Returns for Exchange: within 90 days
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Parts Packaging Guarantee: Featuring 100% ESD anti-static protection, our packaging incorporates high toughness and superior buffering capabilities.
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