AK2346A Datasheet, PDF (12/37 Pages) Asahi Kasei Microsystems – Two-way Radio Audio Processor

ASAHI KASEI
[AK2346A]
3) Audio Filter Characteristics
3.1) Emphasis: off, Compandor: off, Scrambler: off (Design target values)
Parameter
Condition
Min. Typ. Max.
TX overall
characteristics
TXINO to MOD
250Hz
-50
-38
300Hz to 2.0kHz -1.0
+1.0
2.5kHz -1.5
+1.0
Relative value
3.0kHz -4.0
-1.0
to gain at
6.0kHz
-38
-28
1kHz
300Hz to 2.5kHz -1.0
+1.0
3.0kHz -1.5
+1.0
6.0kHz
-43
-22
RX overall
characteristics
RXINO to RXOUT
250Hz
-49
-38
300Hz -1.5
+1.0
Relative value 350Hz to 3.0kHz -1.0
+1.0
to gain at 1kHz
6.0kHz
-38
-28
Units Notes
dB
dB ^SPL=0
fc=2.55K
dB ^SPL=1
fc=3.0K
dB
3.2) Emphasis: on, Compandor: off, Scrambler: off
Parameter
Condition
TX overall
characteristics
TXINO to MOD
250Hz
300Hz
2.5kHz
3.0kHz
Relative value
6.0kHz
to gain at
300Hz
1kHz
2.5kHz
3.0kHz
6.0kHz
RX overall
characteristics
RXINO to RXOUT
250Hz
300Hz
Relative value
to gain at 1kHz
3.0kHz
6.0kHz
Min.
-12.5
+6.0
+4.5
-12.5
+6.0
+7.0
+8.5
-11.5
Typ.
-57
-29
-34
-38
-52
Max.
-40
-9.5
+9.0
+8.5
-18
-9.5
+9.0
+10.5
-12
-26
+11.5
-8.5
-40
Units Notes
dB
dB ^SPL=0
fc=2.55K
dB ^SPL=1
fc=3.0K
dB
MS1289-E-02
- 12 -
2012/06