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參數(shù)資料
| 型號： | LTC1562CG-2#PBF |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 15/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC FILTER UNIV RC QUAD LN 20SSOP |
| 標準包裝： | 66 |
| 濾波器類型： | 通用連續(xù)計時 |
| 頻率 - 截止或中心： | 300kHz |
| 濾波器數(shù)： | 4 |
| 濾波器階數(shù)： | 8th |
| 電源電壓： | 4.75 V ~ 10.5 V，±4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-SSOP（0.209"，5.30mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-SSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1324 (CN2011-ZH PDF) |
8
LTC1562-2
15622fa
tend to scale with R2.) At high fO these resistors fall below
4k, heavily loading the outputs of the LTC1562-2 and
leading to increased THD and other effects. At the other
extreme, a lower fO limit of 20kHz reflects an arbitrary
upper resistor limit of 1M
. The LTC1562-2’s MOS input
circuitry can accommodate higher resistor values than
this, but junction leakage current from the input protection
circuitry may cause DC errors.
The 2nd order transfer functions HLP(s), HBP(s) and
HHP(s) (below) are all inverting so that, for example, at DC
the lowpass gain is – HL. If two such sections are cas-
caded, these phase inversions cancel. Thus, the filter in the
application schematic on the first page of this data sheet
is a dual DC preserving, noninverting, rail-to-rail lowpass
filter, approximating two “straight wires with frequency
selectivity.”
Figure 4 shows further details of 2nd order lowpass,
bandpass and highpass responses. Configurations to
obtain these responses appear in the next three sections.
Basic Lowpass
When ZIN of Figure 3 is a resistor of value RIN, a standard
2nd order lowpass transfer function results from VIN to V2
(Figure 5):
Vs
Hs
H
sQ s
IN
LP
L O
O
2
22
()
–
==
+
() +
ω
ωω
HL = R2/RIN is the DC gain magnitude. (Note that the
transfer function includes a sign inversion.) Parameters
APPLICATIONS INFORMATION
WU
U
fL
GAIN
(V/
V)
0.707 HB
HB
fO
f (LOG SCALE)
BANDPASS RESPONSE
fH
GAIN
(V/
V)
0.707 HL
HP
HL
HH
fP
f (LOG SCALE)
LOWPASS RESPONSE
fC
1562-2 F04
GAIN
(V/
V)
0.707 HH
HP
fP
f (LOG SCALE)
HIGHPASS RESPONSE
Q
f
ff
ff f
ff
QQ
ff
QQ
O
HL
OL H
L
O
HO
==
=
+
+
=+
+
–
;
–1
2
1
2
1
2
1
2
1
2
ff
QQ
ff
Q
HH
Q
CO
PO
PL
=
+
+
=
1
2
1
2
1
2
1
4
22
2
––
–
ff
QQ
ff
Q
HH
Q
CO
PO
PH
=
+
+
=
=
1
2
1
2
1
2
1
4
22
2
1
2
1
2
––
–
Figure 4. Characteristics of Standard 2nd Order Filter Responses
INV
V1
2nd ORDER
1/4 LTC1562-2
V2
1562 F05
R2
RQ
RIN
VIN
VOUT
Figure 5. Basic Lowpass Configuration
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| LTC1562CGPBF | 制造商:Linear Technology 功能描述:Active Filter Quad 8th Order 150kHz SSOP |
| LTC1562CN | 功能描述:IC FILTER UNIV RC QUAD LN 16DIP RoHS:否 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1562CN#PBF | 功能描述:IC FILTER UNIV RC QUAD LN 16DIP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1562IG | 功能描述:IC FILTER UNIVRSL RC QUAD 20SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1562IG#PBF | 功能描述:IC FILTER UNIV RC QUAD LN 20SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1,000 系列:- 濾波器類型:連續(xù)時間，帶通低通 頻率 - 截止或中心:150kHz 濾波器數(shù):4 濾波器階數(shù):8th 電源電壓:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 供應(yīng)商設(shè)備封裝:28-SOIC W 包裝:帶卷 (TR) |
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