ak5394a AKM Semiconductor, Inc., ak5394a Datasheet - Page 21

• Manufacturer Part Number: ak5394a
• Description: Super High Performance 192khz 24-bit ?? Adc
• Manufacturer: AKM Semiconductor, Inc.

ASAHI KASEI
5. Measurement example
Figure 11 plot is the THD+N vs Input Level with circuit Figure 9 and circuit Figure 10. X-AXIS is input level, Y-AXIS is
THD+N (ratio).
Measurement condition
Ta=25°C; VA=5.0V; VD=3.3V; AGND, BGND, DGND=0V; fs=48kHz; Input frequency=1kHz; 24 bit Output;
Measurement frequency =10Hz ∼ 20kHz; DFS0=“L”, DFS1=“L”, VREF capacitors=1000µF
Measured by Audio Precision System Two.
Figure 12 shows the relationship between THD+N and Frequency with capacitors on Table 4. Input circuit uses Figure 9.
Measurement condition
Ta=25°C; VA=5.0V; VD=3.3V; AGND, BGND, DGND=0V; fs=48kHz; 24 bit Output; BW=10Hz ∼ 20kHz;
DFS0=“L”, DFS1=“L”, Measured by Audio Precision System Two.
MS0137-E-03
A KM
AK M
B
d
d
B
F
S
-102.5
-107.5
-112.5
-117.5
-82.5
-87.5
-92.5
-97.5
-100
-105
-110
-115
-120
-100
-105
-110
-115
-120
-125
-130
-80
-85
-90
-95
-60
-65
-70
-75
-80
-85
-90
-95
-30
10
1000µF
-28
20
220µF
-26
470µF
-24
50
Figure 11. THD+N(ratio) vs. Input Level
100µF
-22
Figure 12. THD+N vs. Frequency
100
-20
AK 5394A THD+N vs Input Level
A K5394A THD +N vs Frequency
200
-18
- 21 -
las t.at2c
la s t.at2 c
-16
dB r
Hz
500
-14
1k
-12
-10
2k
10µF
-8
Figure 10
5k
-6
Figure 9
-4
10k
-2
20k
[AK5394A]
2005/05