BH1792GLC-E2 ROHM

Green IRCUT Datasheet Sensor for Heart Rate Monitor ICs Optical Sensor for Heart Rate Monitor IC BH1792GLC General Description Key Specifications BH1792GLC is optical sensor for heart rate monitor IC in VCC Voltage Range: 2.5V to 3.6V which LED driver, green light and IR detection photo- Current Consumption: 200A(Typ) diode are incorporated. This device drives LED and Standby Mode Current: 0.8A (Typ) provides the intensity of light reflected from body. Operating Temperature Range: -20C to +85C LED brightness can be adjusted by LED driver current. The photodiode having the high sensitivity for green light Package W(Typ) x D(Typ) x H(Max) and excellent wavelength selectivity achieves accurate WLGA010V28 2.8mm x 2.8mm x 1.0mm pulse wave detection. Features Build-in green photodiode with excellent wavelength selective green filter and IR curt filter. Built-in IR photodiode for touch detection. Correspond to high sampling frequency. (1024Hz) LED driver with current selection. I2C bus Interface(f/s mode support) Built-in FIFO Applications Wearable device, smart phone, Tablet PC. WLGA010V28 Typical Application Circuit VCC IR Green LED LED LED1 LED Driver LED FIFO LED2 Control LED Driver LED3 SCL ADC Micro SDA ADC Interface PD Controller Control 2 (I C+INT) (Note 1) INT ADC ) PD POR OSC (Note 1) Do not share INT pin with other IC. TMONI GND TEST Product structure : Silicon monolithic integrated circuit. This product has no designed protection against radioactive rays. This product does not include laser transmitter. This product does not include optical load. This product includes Photo detector, ( Photo Diode ) inside of it. www.rohm.com TSZ02201-0M3M0F617010-1-2 2016 ROHM Co., Ltd. All rights reserved. 1/27 TSZ22111 14 001 13.Dec.2017 Rev.002 BH1792GLC Contents General Description ........................................................................................................................................................................ 1 Features.......................................................................................................................................................................................... 1 Applications .................................................................................................................................................................................... 1 Key Specifications .......................................................................................................................................................................... 1 Package........................................................................................................................................................................................ 1 Typical Application Circuit ............................................................................................................................................................... 1 Contents ......................................................................................................................................................................................... 2 Pin Configuration ............................................................................................................................................................................ 3 Pin Description ................................................................................................................................................................................ 3 Block Diagram ................................................................................................................................................................................ 4 Description of Blocks ...................................................................................................................................................................... 4 Absolute Maximum Ratings .......................................................................................................................................................... 5 Thermal Resistance ........................................................................................................................................................................ 5 Recommended Operating Conditions ............................................................................................................................................. 6 Electrical Characteristics................................................................................................................................................................. 6 Power Sequence ............................................................................................................................................................................ 7 2 I C Bus Timing Characteristics ....................................................................................................................................................... 8 2 I C bus Communication .................................................................................................................................................................. 8 Typical Performance Curves ........................................................................................................................................................... 9 2 I C bus Slave address .................................................................................................................................................................. 11 Register Map ................................................................................................................................................................................ 11 Control Sequence ......................................................................................................................................................................... 17 Application Example ..................................................................................................................................................................... 21 I/O equivalent circuit ..................................................................................................................................................................... 22 Operational Notes ......................................................................................................................................................................... 23 Ordering information ..................................................................................................................................................................... 25 Marking Diagram .......................................................................................................................................................................... 25 Optical design for the device ......................................................................................................................................................... 25 Physical Dimension and Packing Information ............................................................................................................................... 26 Revision History ............................................................................................................................................................................ 27 www.rohm.com TSZ02201-0M3M0F617010-1-2 2016 ROHM Co., Ltd. All rights reserved. 2/27 TSZ22111 15 001 13.Dec.2017 Rev.002