as2522bq austriamicrosystems, as2522bq Datasheet - Page 14

• Manufacturer Part Number: as2522bq
• Description: Telephone Line Interface And Speakerphone Circuit
• Manufacturer: austriamicrosystems

Data Sheet AS2522B
DTMF characteristics
I
Ringer
Revision 3.4
Line
V
MF
UFC
V
V
F0
F1
F2
F3
F4
F5
F6
F7
F8
F9
F10
F11
F12
F13
F14
F15
Symbol
Symbol
MFlow
V
f
CT-H
CT-L
=15mA w/o operation of any additional external circuitry, unless other specified, default settings
L-H
range
Tone level low group
at LS
DTMF level range
low group at LS
Preemphasis L-H
Unwanted frequency
components
Frequency deviation
Comfort tone handset
Comfort tone
Loudspeaker
Frequency 0
Frequency 1
Frequency 2
Frequency 3
Frequency 4
Frequency 5
Frequency 6
Frequency 7
Frequency 8
Frequency 9
Frequency 10
Frequency 11
Frequency 12
Frequency 13
Frequency 14
Frequency 15
Parameter
Parameter
Default
13 steps
Prg. in Service mode
Preemphasis=1
300 Hz - 4.3kHz
4.3kHz - 7kHz
7kHz - 10kHz
10kHz - 14kHz
14kHz - 28.5kHz
28.5kHz - 40kHz
Rel to LS
programmable in
service mode
Rel to LS
programmable in
service mode
Conditions
Conditions
1025
1280
Min
Min
770
2.7
-7
-18/-6
Type
Type
1067
1333
1300
2100
1200
2200
1180
1070
1270
1650
1850
2025
2225
800
980
3.2
-36
-30
-24
-18
-15
+3
-6
-9
-3
0
1110
1385
Max
Max
830
3.7
-40
-46
-52
-58
-70
-80
1.2
-5
Units
Units
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBr
dBr
dBr
dBr
dBr
dBr
dBr
dBr
dB
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
Hz
%
Test
Test
Y
N
Y
Y
Y
Y
Y
Y
Y
Y
N
N
N
N
N
N
N
N
N
Y
Y
Y
N
N
N
N
N
N
N
N
N
N
N
N
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