ZL49010

Features: • Wide dynamic range (50dB) DTMF Receiver• Call progress (CP) detection via cadence indication• 4-bit synchronous serial data output• Software controlled guard time for ZL490x0• Internal guard time circuitry for ZL490x1• Powerdown option (ZL4901x &...

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SeekIC No. : 004551011 Detail

ZL49010: Features: • Wide dynamic range (50dB) DTMF Receiver• Call progress (CP) detection via cadence indication• 4-bit synchronous serial data output• Software controlled guard time...

floor Price/Ceiling Price

Part Number:
ZL49010
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Upload time: 2024/4/22

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Product Details

Description



Features:

• Wide dynamic range (50dB) DTMF Receiver
• Call progress (CP) detection via cadence indication
• 4-bit synchronous serial data output
• Software controlled guard time for ZL490x0
• Internal guard time circuitry for ZL490x1
• Powerdown option (ZL4901x & ZL4903x)
• 3.579MHz crystal or ceramic resonator (ZL4903x and ZL4902x)
• External clock input (ZL4901x)
• Guarantees non-detection of spurious tones



Application

• Integrated telephone answering machine
• End-to-end signalling
• Fax Machines



Pinout

  Connection Diagram


Specifications

  Parameter Symbol Min. Max. UNIT
1 Supply voltage VDD-VSS   6 V
2 Voltage on any pin (other than supply) V I/O -0.3 6.3 V
3 Current at any pin (other than supply) I I/O   10 mA
4 Storage temperature TS -65 150
5 Package power dissipation PD   500 mW

† Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.


Description

The ZL49010 is a family of high performance DTMF receivers which decode all 16 tone pairs into a 4-bit binary code. The ZL49010  incorporate an AGC for wide dynamic range and are suitable for end-to-end signalling. The ZL49010 provides an early steering (ESt) logic output to indicate the detection of a DTMF signal and requires external software guard time to validate the DTMF digit. The ZL49010, with preset internal guard times, uses a delay steering (DStD) logic output to indicate the detection of a valid DTMF digit. The 4-bit DTMF binary digit can be clocked out synchronously at the serial data (SD) output. The SD pin is multiplexed with call progress detector output. In the presence of supervisory tones, the call progress detector circuit indicates the cadence (i.e., envelope) of the tone burst. The cadence information can then be processed by an external microcontroller to identify specific call progress signals. The ZL49010 can be used with a crystal or a ceramic resonator without additional components. A power-down option is provided for the ZL49010.




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