S2559A/D/E/F general infrared remote control launch circuit (dual-tone multi-frequency signal generating circuit)

Published:2011/8/1 20:48:00 Author:TaoXi | Keyword: general, infrared, remote control, launch circuit, dual-tone, multi-frequency, signal generating | From:SeekIC

The S2559A/D/E/F is designed as the dual-tone multi-frequency signal generating circuit that can be used in the general infrared remote control launch circuit. The internal circuit is composed of the clock circuit, the keyboard input logic control circuit, the programmable frequency divider, the D/A converter circuit and the squelch circuit. Features The power supply voltage range is wide:3.5-13V(S2559A/B),2.5-10V(S2559E/F). The power consumption is small.The external crystal frequency is 3.579545MHz.The IC has the weak sound output.It is connected with the telephone keyboard directly.The harmonic distortion is small.Integrated circuit upstream oscillator resistor.The integrated circuit has the reference voltage.It can produce the single-tone.The static operating current is 0.4-1.5uA.The output driving current is 1-10mA.



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