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參數(shù)資料
| 型號： | LTC1563-3IGN#TR |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 4/20頁 |
| 文件大小： | 0K |
| 描述： | IC FILTER LP RC 4TH ORDER 16SSOP |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 濾波器類型： | 巴特沃斯，低通開關(guān)電容器 |
| 頻率 - 截止或中心： | 256kHz |
| 濾波器數(shù)： | 1 |
| 濾波器階數(shù)： | 4th |
| 電源電壓： | 2.7 V ~ 11 V，±2.7 V ~ 5.5 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-SSOP（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-SSOP |
| 包裝： | 帶卷 (TR) |
12
LTC1563-2/LTC1563-3
156323fa
should be much larger than RA1 to minimize the interac-
tion of this pole with the 2nd order section. This circuit is
useful in forming dual 3rd order filters and 5th order filters
with a single LTC1563 part. By cascading two parts, 7th
order and 9th order filters are achieved.
DC GAIN =
LTC1563-2: C1A = 53.9pF, C1B = 39.2pF
LTC1563-3: C1A = 35pF, C1B = 26.8pF
–R2
R1
FP =
1
2
π R2 C1
1563 F02
+
–
C1
INV
C2
S
1/2 LTC1563
LP
AGND
R1
(OPEN)
R2
VOUT
VIN
Figure 2
RA1
≈
RB1
10
R2
RB1
RA1
R3
CP
1563 F03
RA1 RB1
RA1 + RB1
FP =
1
()
2
π CP
+
–
C1
INV
C2
S
1/2 LTC1563
LP
AGND
+
–
(OPEN)
C1
INV
C2
S
1/2 LTC1563
LP
1563 F04
AGND
You can also use the TEE network in both sections of the
part to make a 6th order filter. This 6th order filter does not
conform exactly to the textbook responses. Textbook
responses (Butterworth, Bessel, Chebyshev etc.) all have
three complex pole pairs. This filter has two complex pole
pairs and two real poles. The textbook response always
has one section with a low Q value between 0.5 and 0.6. By
replacing this low Q section with two real poles (two real
poles are the same mathematically as a complex pole pair
with a Q of 0.5) and tweaking the Q of the other two
complex pole pair sections you end up with a filter that is
indistinguishable from the textbook filter. The Typical
Applications section illustrates a 100kHz, 6th order pseudo-
Butterworth filter. FilterCAD is a valuable tool for custom
filter design and tweaking textbook responses.
Figure 3
What To Do with an Unused Section
If the LTC1563 is used as a 2nd or 3rd order filter, one of
the sections is not used. Do not leave this section uncon-
nected. If the section is left unconnected, the output is left
to float and oscillation may occur. The unused section
should be connected as shown in Figure 4 with the INV pin
connected to the LP pin and the S pin left open.
Figure 4
APPLICATIONS INFORMATION
WU
U
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|---|---|
| LTC1564CG | 功能描述:IC ANTIALIASING FILTER 16-SSOP 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(biāo)準(zhǔn)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) |
| LTC1564CG#PBF | 功能描述:IC ANTIALIASING FILTER 16-SSOP 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(biāo)準(zhǔn)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) |
| LTC1564CG#PBF | 制造商:Linear Technology 功能描述:Active Analog Filter IC |
| LTC1564CG#TR | 功能描述:IC ANTIALIASING FILTER 16-SSOP 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(biāo)準(zhǔn)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) |
| LTC1564CG#TRPBF | 功能描述:IC ANTIALIASING FILTER 16-SSOP 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(biāo)準(zhǔn)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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