HX3690Q is an ultra-low power, high performance optical sensor with I2C interface for Wearable, Heart-Rate Monitor and Bio-sensor. HX3690Qintegrates a transmitter and a receiver. The receiver has an offset IDAC and a high-resolution ADC. The transmitter has three LED driver ports sharing a 8bit current driver. Both transmitting and receiving path have very high dynamic range, which is desirable to process small PPG signals.
1.Ultra-low power,2 PD input,3 LED drives Biological sign monitoring analog AFE.
2.The dynamic range of the optical signal path is up to 100dB, which can accurately process small signals,Support 4-phase data conversion each time, each phase PD input is dynamically selectable, and LED emission is dynamically selectable.
3.Ultra-low power:@FS=25Hz,LED(32uS)25mA:LED 20uA,Receiver 45uA.
4.Transmitter :Support 3 LEDS drives ，8-bit programmable LED current up to 200mA with programmable LED on time.
5.Receiver:It supports 2-way time-division multiplexed PD input, built-in 21Bits high-precision ADC and±64uA, 6Bits configurable DC elimination IDAC, applicable to each phase. TIA mode:10KΩ-1MΩ.Cap mode:The integration capacitance and integration time can be flexibly adjusted for small signal amplification.
6.The sampling depth is 64 FIFO,Algorithm scheme for power optimization.
1.Voltage:VLED=3V~5.25V VDD= 2.7V~3.6V
2.Communication interface:IIC
3.Temperature range:-20℃~85℃
4.Superiority:High-performance,Ultra LOW Power,HRM,SPO2,HRV
5.Compact Size: QFN-16 3.0*3.0*0.55mm
Headquarter：9/F, Building 5, Zhongke Innovation Plaza, 150 Pubin Road, Jiangbei New District, Nanjing
Shanghai office：203, Building 5, Lane 88, Shengrong Road, Pudong New Area, Shanghai
Shenzhen office：13D, Anhongji Tianyao Square, the intersection of Zhongmei Road and Xinqu Avenue, Minzhi Street, Longhua District, Shenzhen
