OPT4001
- High precision, high speed light-to-digital conversion over high speed I2C interface in two package variants
- Precision optical filtering to closely match human eye with excellent near infrared (IR) rejection
- Semi-logarithmic output with 9 binary logarithmic full-scale light range and highly linear response within each range
- Built-in automatic full-scale light range selection logic, which switches measurement range based on input light condition with excellent gain matching between ranges
- 28 bits of effective dynamic range from
- 312.5 µlux to 83 klux for PicoStar™ package variant
- 437.5 µlux to 117 klux for SOT-5x3 package variant
- 12 configurable conversion times from 600 µs to 800 ms is an excellent choice for a wide variety of high speed and high precision applications
- External pin interrupt for hardware synchronized trigger and interrupts (only on SOT-5X3 package variant)
- Internal FIFO for output registers with I2C burst readout
- Low operating current: 30 µA with ultra-low power standby: 2 µA
- Operating temperature range: –40°C to +85°C
- Wide power-supply range: 1.6 V to 3.6 V
- 5.5 V Tolerant I/O pins
- Selectable I2C address
- Small-form factor
- PicoStar™ package: 0.84 mm x 1.05 mm x 0.226 mm
- SOT-5X3: 2.1mm x 1.9mm x 0.6mm
The OPT4001 is a light-to-digital sensor (single chip lux meter) that measures the intensity of visible light. The spectral response of the sensor tightly matches the photopic response of the human eye. A specially engineered filter on the device rejects near-infrared component from the common light sources to measure accurate light intensity. Output of OPT4001 is semi-logarithmic with 9 binary logarithmic full-scale light ranges along with highly linear response within each range, bringing capability to measure from 312.5 µlux to 83 klux for PicoStar™ variant and 437.5 µlux to 117 klux for the SOT-5X3 variant. This capability allows light sensor to have 28-bit effective dynamic range. With built-in automatic full-scale range selection, logic users do not have to select appropriate gain settings based on light levels.
The engineered optical filter on OPT4001 provides strong infrared rejection, which aids in maintaining high accuracy, despite placing the sensor under dark glass, which is common requirement from industrial design of end products due to aesthetics.
The OPT4001 is designed for systems that require light level detection to enhance user experience and typically replaces low accuracy photo diodes, photo-resistors and other ambient light sensors with underwhelming human eye matching and near infra-red rejection.
The OPT4001 device can be configured to operate with light conversion times all the way 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 the integration time, effectively bringing in capability to measure down to 312.5 µlux of light intensity changes for the PicoStar™ variant and 437.5 µlux for the SOT-5X3 variant.
The digital operation is flexible for system integration. Measurements can be either continuous or triggered in one shots with register writes or hardware pin (only on SOT-5X3 variant). The device features a threshold detection logic, which allows the processor to sleep while the sensor watches for appropriate wake-up event to report via the interrupt pin (only on SOT-5X3 variant).
Digital output, representing the light level is reported over an I2C and SMBus compatible, two-wire serial interface. An internal FIFO on output registers is available to read out the measurements from the sensor at a slower pace while still preserving all the data captured by the device. OPT4001 also supports I2C burst mode helping host read data from FIFO with minimal I2C overhead.
The low power consumption and low power-supply voltage capability of the OPT4001 helps enhance the battery life of battery-powered systems.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | OPT4001 High Speed, High Precision, Digital Ambient Light Sensor datasheet (Rev. A) | PDF | HTML | 2022年 11月 17日 |
| Application brief | How to Select a Light Sensor for Your Application (Rev. C) | PDF | HTML | 2024年 1月 19日 | |
| Certificate | OPT4001DNPQ1EVM EU RoHS Declaration of Conformity (DoC) | 2023年 4月 18日 | ||
| Application brief | The Value of a High-Speed, High-Resolution Light Sensor | PDF | HTML | 2023年 2月 6日 |
設計與開發
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OPT4001DTSEVM — 適用於採用 DTS 封裝的高速、高精密度數位環境光感測器的 OPT4001 評估模組
OPT4001DTS 評估模組 (EVM) 是用於評估採用 DTS 封裝的 OPT4001 性能的平台。OPT4001 為高速且高精度的數位環境光感測器，可在各種照明條件下及各種覆蓋材料的後方使用。
OPT4001DTSEVM 涵蓋兩個 PCB。第一個是 OPTMBEVM 主機板，其中包含可與執行 GUI 評估軟體的電腦通訊的 USB 介面、插入試樣卡的插座，以及作為 PC 與插入插座之裝置間橋接器的 MSP430 微處理器。此電路板也為光源感測器供電，並在光線感測器和電腦之間傳送和接收適當的數位訊號。第二個電路板為 OPT4001 試樣卡，其包含 OPT4001 (...)
OPT4001EVM — 適用高速、高精確度、數位環境光感測器 (ALS) 的 OPT4001 評估模組
The OPT4001 evaluation module (EVM) is a platform for evaluating the OPT4001 under various conditions. OPT4001 is a light-to-digital sensor that measures the intensity of visible light. The spectral response of the sensor tightly matches the photopic response of the human eye.
OPT4001EVM consists (...)
| 封裝 | 引腳 | 下載 |
|---|---|---|
| PICOSTAR (YMN) | 4 | 檢視選項 |
| SOT-5X3 (DTS) | 8 | 檢視選項 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。