AKD4640 Datasheet, PDF (12/29 Pages) Asahi Kasei Microsystems – AKD4640 EVALUATION BOARD

ASAHI KASEI
[AKD4640]
2. PLOT DATA
2-1. ADC (INT à IPGA à ADC) PLOT DATA
AKM
AK4640 ADC THD+N vs. Input Level
VDD=3.3V, fs=44.1kHz, fin=1kHz
-70
-72
-74
-76
-78
d
B
F
-80
S
-82
-84
-86
-88
-90
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
+0
dBr
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Red Solid
3
DSP Anlr.THD+N Ampl A Left
ADDA.at2c
Figure 9. THD+N vs. Input Level
AKM
AK4640 ADC THD+N vs. Input Frequency
VDD=3.3V, fs=44.1kHz, Input=-1.0dBr
-70
-72
-74
-76
-78
d
B
F
-80
S
-82
-84
-86
-88
-90
20
50
100
200
500
1k
2k
Hz
Sweep Trace Color Line Style Thick Data
Axis Comment
1
1
Red Solid
3
DSP Anlr.THD+N Ampl A Left
ADDA.at2c
5k
10k
20k
Figure 10. THD+N vs. Input Frequency
<KM072300>
- 12 -
2003/07