Basic HTML Version
12
IR Receiver
External Application Circuit - Power Noise reduction & ESD Protection
Example of Application
Component
Recommend
1) Rs
(Vcc Input Series Resistance)
Typ. 100ohm (47 ohm ~ 470ohm)
2) Cp1
(Vcc-GND Parallel Condenser)
Typ. 100uF (47uF ~ 100uF)
3) Rp
(Vcc-Vout External Pullup Resistance)
Optional (10K ohm or more)
4) Cp2
(Vout-GND Parallel Condenser)
Typ. 2nF ( 1nF ~ 10nF)
5) D1~D3
(ESD Protection Device)
Zener diode or TVS Protection diode
[Fig.10] Application For Power Supply Ripple Suppression
A further influence to the IR receiver modules may come from a supply voltage which is not stable.
Such a disturbed supply voltage can caused by switching power supply.
Which is not filtered well or by other components in the circuit which produced spikes on the supply line.
This disturbed supply will reduce the sensitivity of receiver modules.
This application circuit will filter the disturbed supply voltage.