HRS3300 Datasheet | TianYiHeXin

Description HALS3300 is an optical digital heart rate sensor, 525nm green LED and driver in a single 8-pin package. The sensor incorporates with a fast, two-wire I2C bus (up to 800k Hz) to municate with micro-controller or embedded system. Its excellent background light rejection allows the device to operate in environments from sunlight to dark rooms. The heart rate sensing is realized by using an 525nm green light LED with current driver, a reflection light detector for the PPG signal from the human body, as well as heart rate algorithm. Typical heart rate measurement samples the reflected PPG signal at a frequency of 25Hz, then the resulting light intensity signal can be transferred to the host controller by I2C interface and the heart rate is calculated by the controller utilizing the algorithm. The device can be used in a health wearable devices, such as sport band or smart watch. Its signal can also be analyzed to indicate the detach of the device. Features - Heart Rate Sensor: 525nm wavelength PPG signal and provide algorithm - HRS: Programmable green light intensity and analog gain - HRS sensor with reduced background noise - ALS cancellation - I2C interface(up to 800k Hz) - Low power consumption TYHX Confidential Nanjing Tian Yi He Xin Electronics Co.,Ltd. HRS3300 Heart Rate Sensor - Wide Input Voltage: From 2.3V to 3.6V - Package size:3.94mm×2.36mm×1.35mm - Pb free and ROHS pliant Function Block Diagrams ALimghbtient INT CONTROL ALS CONTROL CH1 ALS ADC ALS DATA LEDA LEDK 525nm HRS ADC HRS DATA CH0 HRS CONTROL LED Driver Figure 1. Function Block Diagrams I2C Interface SCL SDA GND Note: 1. LEDK and LDR terminals are shorted internally in the package, to be patible with most PCB designs for sensors with internal LED driver. 2. For PCB traces connecting to LEDK and LDR, they can be shorted or leave float, but not connect to...