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THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
DataSheet4U.c...
www.DataSheet4U.com
THIS DOCUMENT IS FOR MAINTENANCE PURPOSES ONLY AND IS NOT RECOMMENDED FOR NEW DESIGNS
DataSheet4U.com
DataShee
DataSheet4U.com
DataSheet 4 U .com
www.DataSheet4U.com
MV8870/MV8870-1
ADVANCE INFORMATION
DS3140-2.1
MV8870 / MV8870-1
INTEGRATED DTMF RECEIVER
The MV8870 / MV8870-1 is a complete DTMF receiver integrating both the bandsplit filter and digital decoder functions, fabricated in GPS’s double-poly ISO2-
CMOS technology. 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 minimised by on-chip provision of a differential input amplifier, clock oscillator and latched 3-state bus interface. The MV8870 and MV8870-1 are functionally identical, but differ in Electrical Characteristics.
IN+ INGS VREF SEL PD OSC1 OSC2 VSS
1 2 3 4 5 6 7 8 9
18 17 16 15 14 13 12 11 10
VDD St/GT ESt StD Q4 Q3 Q2 Q1 TOE
DG18 DP18 MP18
27 St/GT
28 VDD
s s s s s
Complete DTMF Receiver Low Power Consumption Internal Gain Setting Amplifier Adjustable Guard Time Central Office Quality
26 ESt 25 StD 24 NC 23 NC 22 FLT 21 FL 20 Q4 19 Q3
VREF 5 NC 6 SEL 7 FHT 8 FH 9
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s s s s s
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1 IN+
FEATURES
3 GS 4 NC 2 IN-
PD 10 NC 11 OSC1 12 OSC2 13 VSS 14 NC 15 TOE 16 Q1 17 Q2 18
Receiver Systems for BT or CEPT Specifications Paging Sytems Repeater Systems / Mobile Radio Cre...