参数资料
型号: PI49FCT3805HE
厂商: Pericom
文件页数: 9/9页
文件大小: 0K
描述: IC CLK BUFFER 1:5 50MHZ 20-SSOP
产品变化通告: Product Discontinuation Notice 22/Jan/2010
标准包装: 66
系列: 49FCT
类型: 扇出缓冲器(分配)
电路数: 2
比率 - 输入:输出: 1:5
差分 - 输入:输出: 无/无
输入: CMOS,TTL
输出: CMOS
频率 - 最大: 50MHz
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-SSOP(0.209",5.30mm 宽)
供应商设备封装: 20-SSOP
包装: 管件
Technical Note
9/15
www.rohm.com
2010.10 - Rev.A
2010 ROHM Co., Ltd. All rights reserved.
BD3870FS,BD3871FS,BD3872FS,BD3873FS
C1
C2
R3
R4
IN
R1
+
-
R2
(Hz)
R4
R3
R2
C1C2
R4
R3
R1R2
2 π
1
f0
C2
C1
R1
R4
R3
R2
R1R2R4C1C2
Q
(dB)
1
C1
C2
R4
R3
R2
R1
R2R3
1
C1
C2
R4
R3
R2
R1
R4
R3
R2
20log
G(boost)
Description of operations
1) Bass filter
Using external components, center frequencies and Q factors of the bass characteristics are flexible
Fig.5
Standard values of R3, R4 (reference)
(R1=5.6k, R2=390k, C1=C2=0.1F)
Bass Boost Cut Amount
Resistance (k) * Typ.
R3
R4
0dB
77.64
0
2dB
58.90
18.73
4dB
44.02
33.60
6dB
32.20
45.42
8dB
22.82
54.80
10dB
15.36
62.26
12dB
9.44
68.18
14dB
4.78
72.84
* The actual boost cut amount may deviate from the standard values in some degree.
(
dB)
1
C1
C2
R4
R3
R2
R1
R4
R2(R3
1
C1
C2
R4
R3
R2
R1
R2R3
20log
cut
G
Fig.6
G
f
F0
G
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