MT8870D Integrated DTMF Receiver With Enhance Sensitivity

Posted on Feb 6, 2014

The MT8885 is a monolithic DTMF transceiver with call progress Filter It is fabricated in CMOS technology offering low power consumption and high reliability. The receiver section is based upon the industry standard MT8870 DTMF receiver. The transmitter utilizes a switched capacitor D/A Converter for low distortion, high accuracy DTMF signalling.

MT8870D Integrated DTMF Receiver With Enhance Sensitivity
Click here to download the full size of the above Circuit.

Internal Counters provide a burst mode such that Tone bursts CAN be transmitted with precise Timing A call progress Filter CAN be selected allowing a Microprocessor to analyze call progress Tones The MT8885 utilizes an adaptive micro Interface which allows the device to be connected to a number of popular Microcontrollers with minimal external Logic The MT8885 provides enhanced power-down features. The transmitter and receiver may independently be powered down via Register control.

Leave Comment

characters left:

Related Circuits

  • New Circuits



    Popular Circuits

    audio level meter circuit using lm3915
    Design Of Op Amp Sine Wave Oscillators
    Antenna selector circuit diagram using PIN diodes
    The Nic Nac Tic Tac Crystal Radio Set
    how to convert a 9v battery to 3.7v
    Radio Controlled Electronic Flash
    Electronics and Home Automation
    Adjustable gain amplifier circuit diagram of a test device isolation