AK2363 Datasheet, PDF (10/33 Pages) Asahi Kasei Microsystems – Radio Signaling LSI

ASAHI KASEI
[AK2363]
Analog Characteristics
Unless otherwise specified, the following apply: MCLK = 3.6864MHz, f = 1kHz, VR = 0dB
The external circuit constants are set based on the recommended external circuit examples on pages 29 to
31.
dBx is a standardized notation to match the operating voltage and is defined by equation 0dBx = -5 +
20log(VDD/2)dBm.
0dBm = 0.775Vrms
1) MSK modem characteristics
Parameter
Condition
Min.
Typ. Max. Unit Remarks
TX signal
@MOD
1.2kHz signal output
-12
-11
-10 dBx
TX signal distortion @MOD
1.2kHz signal output
-32
dB
RX signal
@RXINO
1.2kHz signal output
-17
-11
-1
dBx
VR gain deviation _@MSKOUT
-6.0dB to +6.0dB, in 0.5dB steps -0.5
0.5
dB
Linearity
2) DTMF Receiver characteristics
Parameter
Condition
@RXINO, AGC Disable,
PGA=0dB
*2), *3), *6)
Tone input level
accept
(for each tone of
composite signal)
@RXINO, AGC Enable,
*2), *3), *6)
@DTMFIN, AGC Disable,
PGA=0dB
*2), *3), *6)
@DTMFIN, AGC Enable,
*2), *3), *6)
Twist accept
*3), *6), *8)
Frequency deviation
accept
Frequency deviation
reject
Third tone tolerance
*2), *6)
*2), *6)
*1), *2), *6), *7)
Noise tolerance
*1), *2), *4), *6), *7)
Dial tone tolerance *1), *2), *5), *6), *7)
PGA gain deviation 0dB to +12dB, in 4dB steps
Min.
Typ.
Max. Unit Remarks
-27
0
dBx
-40
0
dBx
-27
-2
dBx
-40
-2
dBx
±10
dB
±1.5%
±2Hz
±3.5%
-16
dB
-12
dB
+17
dB
-0.5
+0.5 dB
*1) Refers to nominal DTMF frequencies.
*2) High/low tones have the same amplitudes.
*3) High/low tones are deviated by ±1.5%±2Hz.
*4) Bandwidth is limited from 0 to 3kHz Gaussian noise.
*5) Dialtones of 350Hz and 440Hz ±2%
*6) Error rates better than 1 in 10000
*7) Reference DTMF signal input level is -22dBx or less.
*8) Twist = high tone/low tone
MS0583-E-01
- 10 -
2008/06