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參數(shù)資料
| 型號： | AKD4527B |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | EVALUATION BOARD REV.D FOR AK4527B |
| 中文描述： | 評價委員會REV.D的AK4527B |
| 文件頁數(shù)： | 4/40頁 |
| 文件大小： | 348K |
| 代理商： | AKD4527B |
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ASAHI KASEI
[AKD4527B Rev.D]
<KM063700>
- 4 -
’00/9
c) Frequency response of filter
Frequency response of the 1st-order filter
| Amplitude |
2
= K*{1+(f/fc
2
)
2
}/{1+(f/fc
1
)
2
};
K = 1+4.7k/4.7k = 2,
fc
1
= 1/2
π
RC = 102.7kHz@R=4.7k,C=330p,
fc
2
= K*fc
1
= 205.3kHz
Frequency response referenced to output level of this board is as following table:
fin
DC
Frequency Response
0dB
20kHz
-0.121dB
40kHz
-0.452dB
80kHz
-1.448dB
145kHz
-3dB
∞
-6dB
If the frequency response of filter influences the system, 1st-order LPF is also available as the following figure:
AK4527
ROUT1
22u
Signal
6.0Vpp
28
27
26
25
Same circuit
3.0Vpp
NJM5532
+
-
LOUT1
ROUT2
LOUT2
ROUT3
LOUT3
24
23
Same circuit
Same circuit
Same circuit
Same circuit
10k
4.7k
4.7k
3300p
220
LPF
Frequency response of this LPF
| Amplitude |
2
= 1/{1+(f/fc)
2
};
fc = 1/2
π
RC = 219kHz@R=220,C=3300p
Frequency response referenced to output level of this board is as following table:
fin
DC
Frequency Response
0dB
20kHz
-0.036dB
40kHz
-0.142dB
80kHz
-0.543dB
219kHz
-3dB
∞
-
∞
dB
The total frequency response of this board is sum of the external filter and internal LPF of AK4527B.
These filters are effective to attenuate the high frequency noise since some measurement units is sensitive for
out-of-band noise.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AKD4527B(AKD4527B) | Evaluation board Rev.D for AK4527B |
| AKD4527B.(AKD4527B) | Evaluation board Rev.D for AK4527B |
| AKD4528 | EVALUATION BOARD FOR AK4528 REV.C |
| AKD4550 | EVALUATION BOARD REV.C FOR AK4550 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AKD4527B(AKD4527B) | 制造商:AKM 制造商全稱:AKM 功能描述:Evaluation board Rev.D for AK4527B |
| AKD4527B.(AKD4527B) | 制造商:AKM 制造商全稱:AKM 功能描述:Evaluation board Rev.D for AK4527B |
| AKD4528 | 制造商:AKM 制造商全稱:AKM 功能描述:High Performance 24Bit 96kHz Audio CODEC |
| AKD4528_05 | 制造商:AKM 制造商全稱:AKM 功能描述:24Bit A/D & D/A converter |
| AKD4529 | 制造商:AKM 制造商全稱:AKM 功能描述:High Performance Multi-channel Audio CODEC |
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