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AK2363

Radio Signaling LSI

Asahi Kasei Microdevices 

ASAHI KASEI

[AK2363]

AK2363

Radio Signaling LSI

Features

□ DTMF Receiver including an AGC circuit

□ Built-in MSK modem allowing selection from 1200 and 2400 bit/s

□ Programmable modem frame detection pattern

□ Built-in 3.6864MHz oscillator circuit

□ Support of external clocks with frequencies twice, three times, and four times

higher than 3.6864MHz

□ Operating voltage range: 2.6V to 3.7V

□ Operating temperature range: -40°C to +85°C

□ Package: 24-pin QFNJ (4.0 x 4.0 x 0.75mm, 0.5mm pitch)

Overview

The AK2363 is a radio signaling LSI device into which an MSK modem and a DTMF Receiver are

integrated on a single chip.

The MSK modem supports 1200 and 2400 bit/s, and the demodulator has a 16-bit frame pattern

detection function that allows any settings. When the signal-to-noise (S/N) ratio is 12dB, the BER

characteristic at 1200 bit/s is 5.0E-06, and the BER characteristic at 2400 bit/s is 1.0E-04.

The DTMF Receiver operates in two modes: Normal mode (AGD Disable) indicating input signal

detection levels ranging from -27dBx to 0dBx and high sensitivity mode (AGC Enable) in which the

receiver operates at –40dBx to 0dBx.

In addition to a fundamental frequency of 3.686MHz, the oscillator circuit supports external clock input

with frequencies of 7.3728MHz (twice higher than 3.6864MHz), 11.0592MHz (three times higher than

3.6864MHz), and 14.7456MHz (four times higher than 3.6864MHz).

The internal operation is controlled by the three-wire serial method in which serial input data (SDATA)

consisting of a 1-bit instruction, a 4-bit address, and 8-bit data is set in synchronization with the CSN

and SCLK signals.

The 24-pin QFNJ package (4.0mm ´ 4.0mm) is employed to realize compact, high-density packaging.

MS0583-E-01

-1-

2008/06

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