TSL237T Light-to-Frequency
High-sensitivity converter low profile 4-lead package
特点
- 5M:1 input dynamic range
- Low dark frequency (0.1Hz typical)
- High irradiance responsivity 1.2kHz/(µW/cm2) @ λp = 640nm
- 2.6mm x 3.8mm 4-lead SMD (T) package
优势
- Detects light intensity at a high resolution
- Provides low light level operation
- Provides for high sensitivity to detect a small change in light
- Reduces board space requirements while simplifying designs
产品参数
| Supply Voltage [V] | 2.7-5.5 |
|---|---|
| Responsivity [Hz/µW/cm²] | 1200 @ 640 |
| Max. Output Frequency [MHz] | 1 |
| Selectable Sensitivity and Full-Scale Output Frequency | |
| Output Frequency Tolerances [+/- %] | 20 |
| Temperature Range [°C] | -40 to 85 |
| Package | T |
| Remark | Not recommended for new design. Please see Ambient Light Sensors device family. |
综述
The TSL237 light-to-frequency converter combines a silicon photodiode and a current-to-frequency converter on a single monolithic CMOS integrated circuit. Output is a square wave (50% duty cycle) with frequency directly proportional to light intensity (irradiance) on the photodiode. The digital output allows direct interface to a microcontroller or other logic circuitry. Output enable (OE) places the output in a high-impedance state for multiple-unit sharing of a microcontroller input line. The device has been temperature compensated for the ultraviolet-to-visible light range of 320 nm to 700 nm and responds over the light range of 320 nm to 1050 nm. The TSL237 is characterized for operation over the temperature range of −40°C to 85°C and is supplied in a 4-lead ChipLED package (CL) and a compact 4-lead surface-mount package (T).
ams-OSRAM AG is discontinuing production of this device. Final lifetime buy order must be placed by OCTOBER 15, 2021. Please contact your local sales representative for further information regarding available or planned replacement options.
本产品适用于以下应用:
- Pulse oximetry
- Color sensing
- Turbidity sensing
- Optical switch
工具
| 标题 | 分类 | 主标题 | 购买 |
|---|---|---|---|
| Light-to-FrequencyEvalKit | Application Board | Evaluation Kit for Light-to-Frequency Sensors |
技术文档
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| Datasheet | Document version 1-01 | English | ||
| Application Note | Colorimetry Tutorial (DN 20) | English | ||
| Application Note | Basic Pre-Production Light & Color Sensor Solution Validation Process | English |
环境文档
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| RoHS Certificate | RoHS Certificate_TSL237T | English |
通知
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| EoL Notification | Plano Test Site (issued May-20-2021) | English |
其他信息
| 类别 | 描述 | 语言 | ||
|---|---|---|---|---|
| Block Diagram | TSL237T Block Diagram | English |
相关评估板
Evaluation Kit for Light-to-Frequency Sensors
Light-to-FrequencyEvalKit
