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| 型號(hào)： | PI49FCT3805DSE |
| 廠商： | Pericom |
| 文件頁(yè)數(shù)： | 2/9頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CLK BUFFER 1:5 133MHZ 20-SOIC |
| 產(chǎn)品變化通告： | Product Discontinuation Notice 29/May/2007 |
| 標(biāo)準(zhǔn)包裝： | 38 |
| 系列： | 49FCT |
| 類型： | 扇出緩沖器（分配） |
| 電路數(shù)： | 2 |
| 比率 - 輸入:輸出： | 1:5 |
| 差分 - 輸入:輸出： | 無(wú)/無(wú) |
| 輸入： | CMOS，TTL |
| 輸出： | CMOS |
| 頻率 - 最大： | 133MHz |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SOIC |
| 包裝： | 管件 |
Technical Note
10/15
www.rohm.com
2010.10 - Rev.A
2010 ROHM Co., Ltd. All rights reserved.
BD3870FS,BD3871FS,BD3872FS,BD3873FS
2) Treble filter
Fig.7
Standard values of R1, R2 (reference)
Treble Boost Cut Amount
Resistance (k) * Typ.
R1
R2
0dB
0
36.28
2dB
7.46
28.82
4dB
13.39
22.89
6dB
18.10
18.18
8dB
21.84
14.44
10dB
24.81
11.47
12dB
27.20
9.08
14dB (BD3872FS only)
29.04
7.24
* The actual boost cut amount may deviate from the standard values in some degree.
3) Matrix surround
Fig.9
Matrix surround is constructed as shown above. Gains are defined as follows:
In-phase Gain: Gains obtained on OUT1 and OUT2 against IN1 when inputting a signal of the equivalent level and
in-phase (L=R) to IN1 and IN2.
1
L
2
2.14
L
2
4.14
IN2
OUT2
IN1
OUT1
(dB)
0
20log1
Single-phase Gain: Gains obtained on OUT1 and OUT2 against IN1 when inputting a signal to IN1 and AC-grounding IN2
(R=0).
2,07
L
2
4.14
IN1
OUT1
1.07
L
2
2.14
IN1
OUT2
(dB)
6.3
20log2.07
(dB)
0.59
1.07
20log
Opposite-phase Gain: Gains obtained on OUT1 and OUT2 against IN1 when inputting signals of the equivalent level and
opposite-phase (L-R) to IN1 and IN2.
fc =
(Hz)
G (boost) = 20log
(dB)
G (cut) = 20log
(dB)
Zc =
()
2πR2C
1
R2+Zc
R1+R2+Zc
R2+Zc
jωc
1
R2
IN
OUT
C
+
-
R1
+
-
×1/2
+
L
R
IN1
IN2
+
-
×2.14
(4.14L/2 - 2.14R/2)
OUT1
OUT2
(4.14R/2 - 2.14L/2)
+
3.14
L
2
2.14
L
2
4.14
IN2
OUT2
IN1
OUT1
(dB)
10
20log3.14
Fig.8
G
f
fc
G
3dB
G
3dB
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| PI49FCT3805DSX | 制造商:PERICOM 功能描述: |
| PI49FCT3805E | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V, 2 x 1:5 CMOS Clock Driver |
| PI49FCT3805EH | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V, 2 x 1:5 CMOS Clock Driver |
| PI49FCT3805EL | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V, 2 x 1:5 CMOS Clock Driver |
| PI49FCT3805EQ | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:3.3V, 2 x 1:5 CMOS Clock Driver |
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