Part Number
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HM9270C |
Manufacturer
|
ELAN Microelectronics Corp |
Description
|
DTMF RECEIVER |
Published
|
Mar 26, 2005 |
Detailed Description
|
HM 9270C/D DTMF RECEIVER
General Description
The HM 9270C/D is a complete DTMF receiver integrating both the bandsplit ...
|
Datasheet
|
HM9270C
|
Overview
HM 9270C/D DTMF RECEIVER
General Description
The HM 9270C/D 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 and dial-tone rejection.
Digital counting techniques are employed in the decoder to detect and decode all 16 DTMF tonepairs into a 4-bit code.
External component count is minimized by on-chip provision of a differential input amplifier, clock-oscillator and latched 3-state bus interface.
Features
• • • • • • • • Complete receiver in an 18-pin package.
Excellent performance.
CMOS, single 5 volt operation.
Minimum board area.
Central office quality.
Low...
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