贴片光学传感驱动器

SURFACE MOUNTING OPTICAL SENSING DRIVER

B1515 0SD-HJ，是一款针对光轴模拟键盘的专用产品。

内部集成IR-PT驱动电路和ADC，将按键距离转换成数字信号，主机端可以通过专用3-wire串口将数字信号读取到主机端。多个光学传感驱动器可以以菊花链形式进行扩展使用，从而实现高精度按键距离检测和高效传输。

It internally integrates an IR-PT drive circuit and an ADC, converting the key distance into a digital signal. The host can read the digital signal through a dedicated 3-wire serial port. Multiple optical sensor drivers can be expanded for use in a daisy-chain configuration, enabling high-precision key distance detection and efficient transmission.

规格参数

尺寸1.5*1.5*0.55mm；
IR采用恒流驱动；
IR驱动电流可配置，解决生产一致性问题；
PT信号采用跨阻放大；
ADC精度支持9~12bit可配置；
3-wire专用串口；
数据传输兼容SPI协议；

Dimensions: 1.51.50.55mm;
IR (Infrared) adopts constant current driving;
IR driving current is configurable to solve production consistency issues;
PT (Photo Transistor) signal uses transimpedance amplification;
ADC (Analog-to-Digital Converter) accuracy supports 9~12bit configurable;
3-wire dedicated serial port;
Data transmission is compatible with the SPI (Serial Peripheral Interface) protocol;

菊花链串联扩展；
集成1组RGB发光二极管；
集成3路8bit 256级恒流驱动；
支持16bit PWM色彩调节；
恒流值支持4档粗调：2.5/3.0/3.6/9.6mA；
每一档粗调电流模式下，支持256档电流细调；
应用于消费电子、电竞外设、新兴领域

Daisy-chain series expansion;
Integrated 1 set of RGB light-emitting diodes (LEDs);
Integrated 3-channel 8-bit 256-level constant current driving;
Supports 16-bit PWM color adjustment;
Constant current values support 4-level coarse adjustment: 2.5/3.0/3.6/9.6mA;
Under each coarse adjustment current mode, 256-level fine current adjustment is supported;
Applied to consumer electronics, e-sports peripherals, and emerging fields.