 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MT8870 Datasheet(PDF) 1 Page - Mitel Networks Corporation |
|
|
|||||||||||||||||||||||||||||
MT8870 Datasheet(HTML) 1 Page - Mitel Networks Corporation |
|
|
1 / 12 page  4-11 ® MT8870D/MT8870D-1 Integrated DTMF Receiver Features • Complete DTMF Receiver • Low power consumption • Internal gain setting amplifier • Adjustable guard time • Central office quality • Power-down mode • Inhibit mode • Backward compatible with MT8870C/MT8870C-1 Applications • Receiver system for British Telecom (BT) or CEPT Spec (MT8870D-1) • Paging systems • Repeater systems/mobile radio • Credit card systems • Remote control • Personal computers • Telephone answering machine Description The MT8870D/MT8870D-1 is a complete DTMF receiver integrating both the bandsplit 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. Ordering Information MT8870DE/DE-1 18 Pin Plastic DIP MT8870DC/DC-1 18 Pin Ceramic DIP MT8870DS/DS-1 18 Pin SOIC MT8870DN/DN-1 20 Pin SSOP MT8870DT/DT-1 20 Pin TSSOP -40 °C to +85 °C Figure 1 - Functional Block Diagram PWDN IN + IN - GS OSC1 OSC2 St/GT ESt STD TOE Q1 Q2 Q3 Q4 VDD VSS VRef INH Bias Circuit Dial Tone Filter High Group Filter Low Group Filter Digital Detection Algorithm Code Converter and Latch St GT Steering Logic Chip Power Chip Bias VRef Buffer Zero Crossing Detectors to all Chip Clocks ISSUE 3 May1995 ISO2-CMOS |
Similar Part No. - MT8870 |
|
Similar Description - MT8870 |
|
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
