AK2347B Datasheet, PDF (10/34 Pages) Asahi Kasei Microsystems – Two-way Radio Audio & Sub-Audio Processor

ASAHI KASEI
[AK2347B]
Parameter
VR3
Attenuation error
VR4
Attenuation error
VR4 ATT error
(VR45…40=0,0,0,0,0,
0)
Condition
RXIN0 to RXOUT
-4.0dB to +3.5dB, 0.5dB/step
RXIN0 to RXOUT
-4.5 to +4.5dB, 1.5dB/step
RXIN0 to RXOUT
Relative value when –18/0dB
is set
Min.
-0.5
-0.25
-20
Typ.
-18
Max.
+0.5
+0.25
Units
dB
Remarks
dB
-16
dB
3) Audio Filter Characteristics
3.1) Emphasis: on, Compandor: off, Scrambler: off
Parameter
Condition
Min.
Typ.
Max.
Units Remarks
TX overall
characteristics
RX overall
characteristics
TXINO to MOD
Relative value
to gain at 1kHz
RXINO to RXAF
Relative value
to gain at 1kHz
250Hz
-57
-40
dB
300Hz -12.5
2.5kHz +6.0
3.0kHz +4.5
6.0kHz
-23
-9.5
+9.0
+8.5
-18
SPL=0
dB fc=2.55
K
300Hz -12.5
-9.5
2.5kHz +6.0
3.0kHz +7.0
+9.0
+10.5
dB
SPL=1
fc=3.0K
6.0kHz
-17
-12
250Hz
-38
-26
300Hz +8.5
3.0kHz -11.5
+11.5
-8.5
dB
6.0kHz
-52
-40
3.2) Emphasis: off, Compandor: off, Scrambler: off
target values)
(Design
Parameter
Condition
Min.
Typ.
Max.
Units Remarks
TX overall
characteristics
TXINO to MOD
250Hz
-50
-38
dB
300Hz to 2.0kHz -1.0
2.5kHz -1.5
Relative value
3.0kHz -4.0
to gain at 1kHz
6.0kHz
-32
+1.0
+1.0
-1.0
-28
SPL=0
dB fc=2.55
K
300Hz to 2.5kHz -1.0
3.0kHz -1.5
6.0kHz
-26
+1.0
+1.0
-22
dB
SPL=1
fc=3.0K
RX overall
characteristics
RXINO to RXAF
250Hz
-49
-38
300Hz -1.5
Relative value 350Hz to 3.0kHz -1.0
+1.0
+1.0
dB
to gain at 1kHz
6.0kHz
-38
-28
MS1419-E-00
- 10 -
2012/05