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MT3371BSR1 Datasheet(PDF) 1 Page - Zarlink Semiconductor Inc |
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MT3371BSR1 Datasheet(HTML) 1 Page - Zarlink Semiconductor Inc |
1 / 15 page 1 Zarlink Semiconductor Inc. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright 1995-2005, Zarlink Semiconductor Inc. All Rights Reserved. Features • Wide dynamic range (50 dB) DTMF Receiver • Call progress (CP) detection via cadence indication • 4-bit synchronous serial data output • Software controlled guard time for MT3x70B • Internal guard time circuitry for MT3x71B • Powerdown option (MT317xB & MT337xB) • 4.194304 MHz crystal or ceramic resonator (MT337xB and MT327xB) • External clock input (MT317xB) • Guarantees non-detection of spurious tones Applications • Integrated telephone answering machine • End-to-end signalling •Fax Machines August 2005 Ordering Information MT3170/71BE 8 Pin PDIP Tubes MT3270/71BE 8 Pin PDIP Tubes MT3370/71BS 18 Pin SOIC Tubes MT3370/71BN 20 Pin SSOP Tubes MT3370/71BSR 18 Pin SOIC Tape & Reel MT3371BNR 20 Pin SSOP Tape & Reel MT3270/71BE1 8 Pin PDIP* Tubes MT3171BE1 8 Pin PDIP* Tubes MT3170BE1 8 Pin PDIP** Tubes MT3370/BN1 20 Pin SSOP* Tubes MT3370/71BS1 18 Pin SOIC* Tubes MT3370/71BSR1 18 Pin SOIC* Tape & Reel *Pb Free Matte Tin **Pb Free Tin/Silver/Copper -40 °C to 85°C MT3170B/71B, MT3270B/71B, MT3370B/71B Wide Dynamic Range DTMF Receiver Data Sheet Figure 1 - Functional Block Diagram PWDN VDD VSS INPUT OSC2 OSC1 (CLK) ➀ MT3170B/71B and MT337xB only. ➁ MT3270B/71B and MT337xB only. Voltage Bias Circuit AGC Anti- alias Filter High Group Filter Low Group Filter Steering Circuit Digital Detector Algorithm Code Converter and Latch Digital Guard Time➂ Parallel to Serial Converter & Latch Mux Energy Detection Oscillator and Clock Circuit To All Chip Clocks Dial Tone Filter ESt DStD ACK SD ➀ ➁ or ➂ MT3x71B only. |
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