Mt8870 Embedded System

Our firm is producing and supplying of MT8870 Embedded System to our patrons. The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the band split filter and digital decoder functions. The filter section uses switched capacitor techniques for high and low group filters; the decoder uses digital counting techniques to detect and decode all 16 DTMF tone pairs into a 4-bit code. External component count is minimized by on chip provision of a differential input amplifier, clock oscillator and latched three-state bus interface.


Features
a c Complete DTMF Receiver
a c Low power consumption
a c Internal gain setting amplifier
a c Adjustable guard time
a c Central office quality
a c Power-down mode
a c Inhibit mode