參數(shù)資料
型號: AK2301A
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 3.3V Single channel PCM CODEC LSI
中文描述: 3.3單聲道的PCM CODEC芯片
文件頁數(shù): 18/20頁
文件大?。?/td> 158K
代理商: AK2301A
ASAHI KASEI
AK2301A
Universal op-amps
The op-amps for construction of the external filter.
The AMP1(2)I is negative input and the AMP1(2)O is output of the op-amp.
- Circuit example
Please design output load may become 8k
Ω
or more. The output load includes a feedback resistor and
AC load. These op-amps are assumed to be used for 20kHz max cut off frequency LPF. And please
design the gain may become -12~6dB.
The following figure shows the circuit example.
C
1
R
1
<MS0300-E-00>
18
2004/3
AMP1(2)I
AMP1(2)O
Load Z
VSS
R
2
C
2
C
3
Each parameter is calculated as is shown below.
LPF cut-off frequency
f
cL
[Hz]
f
cL
=1/(2
π
R
2
C
2
)
Output load
L[
Ω
]
L= R
2
Z/( R
2
+Z)
Gain
A[dB]
A=20log (R
2
/ R
1
)
HPF cut-off frequency
f
cH
[Hz]
f
cH
=1/(2
π
R
1
C
1
)
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