[AK2300]
<MS0998-E-00> 9 2008/9
CODEC
* The AMPT characteristics is measured at the 0dB gain.
The frequency specifications when FS deviation from 8kHz are as follows:
ionspecificatfrequency Effectiveion specificatfrequency noted
8k[Hz]
FS
=´
Used
Absolute Gain
Parameter
Conditions min typ max Unit
Analog input level 0dBm0@1020Hz input 0.460
Vrms
Absolute transmit gain -0.6 - 0.6 dB
Maximum overload level
VFTN
→
DX
3.14dBm0 0.660
Vrms
Analog output level 0dBm0@1020Hz input 0.460
Vrms
Absolute receive gain -0.6 - 0.6 dB
Maximum overload level
DR
→
VR
3.14dBm0 0.660
Vrms
Frequency response
Parameter Conditions min Typ max
Unit
Transmit frequency response
Relative to: -55dBm0~-50dBm0 -1.2 - 1.2
(A→D) -10dBm0 -50dBm0~-40dBm0 -0.4 - 0.4
dB
VFTN → DX 1020Hz Tone
-40dBm0~ 3dBm0 -0.2 - 0.2
Receive frequency response
Relative to: -55dBm0~-50dBm0 -1.2 - 1.2
(D→A) -10dBm0 -50dBm0~-40dBm0 -0.4 - 0.4
dB
DR → VR 1020Hz Tone
-40dBm0~ 3dBm0 -0.2 - 0.2
Frequency response
Parameter Conditions min typ max
Unit
Transmit Frequency response Relative to:
0.05kHz - - -30
(A→D)
0dBm0@1020Hz
0.06kHz -
- -26
0.2kHz -1.8 - 0
VFTN → DX
0.3~3.0kHz -0.15
- 0.15
dB
3.4kHz -0.8 - 0
4.0kHz - - -14
Receive Frequency response Relative to:
0~3.0kHz -0.15
- 0.15
(D→A)
0dBm0@1020Hz
3.4kHz -0.8 - 0
dB
DR → VR
4.0kHz - - -14
Distortion (A-law, m-law)
Parameter Conditions min typ max
Unit
Transmit signal to Distortion 1020Hz Tone
-40dBm0~-45dBm0
25 - -
(A→D)
-30dBm0~-40dBm0
30 - - dB
VFTN → DX
0dBm0~-30dBm0 36 - -
Receive signal to Distortion 1020Hz Tone
-40dBm0~-45dBm0
25 - -
(D→A)
-30dBm0~-40dBm0
30 - - dB
DR → VR
0dBm0~-30dBm0 36 - -
Distortion (Liear PCM)
Parameter Conditions min typ max
Unit
Transmit signal to Distortion
(A→D) VFTN → DX
1020Hz Tone 0dBm0 (C-massage) 78 dB
Receive signal to Distortion
(D→A) DR → VR
1020Hz Tone 0dBm0 (C-massage) 81 dB