The LC72700E and LC72700G are data decoder LSIs for receiving DARCTM mobile FM multiplex broadcasts. A multi-function, compact, adjustment-free system can be implemented in two chips by combining this LSI with the LV3400M band-pass filter IC, which extracts the multiplex components from a composite FM signal.
The document describes the Sanyo LC72700E and LC72700G, which are CMOS LSI chips designed as data decoders for DARC mobile FM multiplex broadcasts. These devices function as a multi-function, compact system when combined with an LV3400M band-pass filter IC to extract multiplex components from composite FM signals.
Key features include a delay detection scheme using a 1T delay and a built-in error correction function utilizing a 2T delay. The chips support both serial and parallel data I/O, digital PLL clock regeneration, and block/frame synchronization detection with settable protection counts. They utilize (272,190) codes for error correction and include built-in frame memory for product codes.
| Operating temperature range | 40 to +85 °C |
|---|---|
| Storage temperature range | -55 to +125 °C |
| Supply voltage (typical) | 5.0 V |
| Oscillator frequency | 7.2 MHz |
| Input sensitivity (sine wave) | 400 to 1500 mvVrms |
| Error correction code | (272,190) codes |
The LSI operates at a frequency of 7.2 MHz with a tolerance of +250 ppm.
The absolute maximum rating for the power supply voltage (Vop) is -0.3 to +7.0 V.
Yes, the system supports both serial and parallel data /O interfaces.