ZL49010DA, ZL49010DAA, ZL49021 Selling Leads, Datasheet
MFG:ZARLINK Package Cooled:DIP8 D/C:824
ZL49010DA, ZL49010DAA, ZL49021 Datasheet download
Part Number: ZL49010DA
MFG: ZARLINK
Package Cooled: DIP8
D/C: 824
ZL49010DA, ZL49010DAA, ZL49021
- Table of contents:
Info of ZL49010DA
Info of ZL49010DAA
Info of ZL49021
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About ZL49010DAA
PDF/DataSheet Download
Datasheet: ZL49010DAA
File Size: 361959 KB
Manufacturer: ZARLINK [Zarlink Semiconductor Inc]
Download : Click here to Download
About ZL49010DAA
PDF/DataSheet Download
Datasheet: ZL49010DAA
File Size: 361959 KB
Manufacturer: ZARLINK [Zarlink Semiconductor Inc]
Download : Click here to Download
About ZL49021
PDF/DataSheet Download
Datasheet: ZL49021
File Size: 361959 KB
Manufacturer: ZARLINK [Zarlink Semiconductor Inc]
Download : Click here to Download
ZL49021 Parameters
- Wide dynamic range (50 dB) DTMF Receiver
- Call progress (CP) detection via cadence indication
- 4-bit synchronous serial data output
- Preset internal guard time
- 3.579 MHz crystal oscillator driver circuit
- Guarantees non-detection of spurious tones
ZL49021 General Description
The ZL490xx is a family of high performance DTMF receivers which decode all 16 tone pairs into a 4-bit binary code. These devices incorporate an AGC for wide dynamic range and are suitable for end-to-end signalling. The ZL490x0 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 ZL490x1, 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 ZL4902x and ZL4903x can be used with a crystal or a ceramic resonator without additional components. A power-down option is provided for the ZL4901x and ZL4903x.
ZL49021 Maximum Ratings
| 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.
ZL49021 Features
- Wide dynamic range (50 dB) DTMF Receiver
- Call progress (CP) detection via cadence indication
- 4-bit synchronous serial data output
- Preset internal guard time
- 3.579 MHz crystal oscillator driver circuit
- Guarantees non-detection of spurious tones
ZL49021 Typical Application
ZL49021 Datasheet
ZL49021 Connection Diagram
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