SGM8139.pdf
No.11272
● Operating Voltage Range: 1.4V to 5.5V
● Average Quiescent Current: 6.5μA (TYP)
● Two Integrated High Input Impedance Operational Amplifiers
● Integrated Bi-directional Amplitude Discriminator
● Adjustable Delay/Lockout Timers With External R and C
● Integrated Voltage Reference
● Available in Green SOIC-16 and TQFN-2.5×2.5-16L Packages
The SGM8139 is a low voltage low power analog front end designed for PIR and vibration sensors. This part integrates two high input impedance operational amplifiers, window comparator, state control logic, a delay timer, a latch timer, a voltage reference and high current output stages. It can be used in various sensors, delay controllers as well as wake-up circuit in low power consumption systems.
Many industrial and building automation systems use motion detectors to control different functions based on human presence. Using SGM8139 with proper PIR sensor, it is easy to build a compact passive infrared detection system. The output stage of SGM8139 can easily drive different types of lights, buzzers, automatic doors, fans and white goods with programmable timers.
It is especially suitable for office buildings, hotels, shopping malls or automatic lighting and alarm systems, as well as intrusion detection. SGM8139 can be used for motion detection and room monitors in a smart home system as an ultra-low power wake-up block. SGM8139 can be used to condition the vibration sensor, providing a trigger signal to system.
