FN7386.6 July 7, 2009 Application Circuits Sallen Key Low Pass Filter A common and easy to implement filter taking advantage of t" />
參數(shù)資料
型號(hào): EL5157IWZ-T7A
廠商: Intersil
文件頁(yè)數(shù): 4/17頁(yè)
文件大小: 0K
描述: IC AMP VFA SGL 600MHZ SOT23-5
標(biāo)準(zhǔn)包裝: 250
放大器類型: 電壓反饋
電路數(shù): 1
轉(zhuǎn)換速率: 700 V/µs
增益帶寬積: 210MHz
-3db帶寬: 600MHz
電流 - 輸入偏壓: 400nA
電壓 - 輸入偏移: 500µV
電流 - 電源: 6mA
電流 - 輸出 / 通道: 140mA
電壓 - 電源,單路/雙路(±): 4.5 V ~ 12 V,±2.25 V ~ 6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: SC-74A,SOT-753
供應(yīng)商設(shè)備封裝: SOT-23-5
包裝: 帶卷 (TR)
12
FN7386.6
July 7, 2009
Application Circuits
Sallen Key Low Pass Filter
A common and easy to implement filter taking advantage of
the wide bandwidth, low offset and low power demands of
the EL5152. A derivation of the transfer function is provided
for convenience (See Figure 35).
Sallen Key High Pass Filter
Again this useful filter benefits from the characteristics of the
EL5152. The transfer function is very similar to the low pass
so only the results are presented (See Figure 36).
FIGURE 35. SALLEN KEY LOW PASS FILTER
Equations simplify if we let all
components be equal to R = C
+
-
V+
V-
V2
5V
L1
10H
L1
10H
R6
1k
Ω
C5
1nF
C4
1nF
VOUT
R7
1k
Ω
V3
5V
R1
1k
Ω
R2
1k
Ω C2
1nF
V1
C1
1nF
C5
1nF
R5
1k
Ω
C3
1nF
RA
1k
Ω
RB
1k
Ω
TUNED POWER
BYPASS NETWORK
TUNED POWER
BYPASS NETWORK
K1
RB
RA
--------
+
=
VO
K
1
R2 C2S 1
+
---------------------------------
VO
=
V1 Vi
R1
------------------
1
VO
KV1
-----------------
R2
-----------------
VO Vi
1
C1S
-----------
-------------------
0
=
++
Hjw
1
1w
2R
1C1R2C2
jw 1 K
()R
1C1
R1C2 R2C2
++
()
+
------------------------------------------------------------------------------------------------------------------------------------------------
=
Hs
K
R1C1R2C2S2
1K
()R
1C1
R1C2 R21C2
++
()s1
++
-----------------------------------------------------------------------------------------------------------------------------------------------
=
Holp
K
=
wo
1
R1C1R2C2
-----------------------------------
=
Q
1
1K
R1C1
R2C2
---------------
R1C2
R2C1
---------------
R2C2
R1C1
---------------
++
--------------------------------------------------------------------------------------------
=
Holp
K
=
wo
1
RC
---------
=
Q
1
3K
-------------
=
EL5156, EL5157, EL5256, EL5257
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