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參數(shù)資料
| 型號(hào)： | LTC1562CG |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 19/28頁 |
| 文件大小： | 0K |
| 描述： | IC FILTER UNIVRSL RC QUAD 20SSOP |
| 標(biāo)準(zhǔn)包裝： | 66 |
| 濾波器類型： | 通用連續(xù)計(jì)時(shí) |
| 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： | 4.75 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 |
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26
LTC1562
1562fa
Dual 5th Order Lowpass “Elliptic” Filter
RQ1
RIN1B
RIN1A
VIN1
VIN2
RQ2
CIN2
RIN2
CIN2
RQ2
R22
0.1
F
VOUT2
VOUT1
5V
–5V
R21
LTC1562
INVB
V1B
V2B
V+
SHDN
V2A
V1A
INVA
20
19
18
16
15
13
12
11
INVC
V1C
V2C
V –
AGND
V2D
V1D
INVD
1
2
3
5
6
8
9
10
0.1
F
CIN1
RIN1B
RIN1A
CIN1
1562 TA15a
SCHEMATIC INCLUDES PIN NUMBERS FOR 20-PIN PACKAGE.
PINS 4, 7, 14, 17 (NOT SHOWN) ALSO CONNECT TO V –
Construction and Instrumentation Cautions
100dB rejections at hundreds of kilohertz require electri-
cally clean, compact construction, with good grounding
and supply decoupling, and minimal parasitic capaci-
tances in critical paths (such as Operational Filter block
INV inputs). In a circuit with 5k resistances trying for
100dB rejection at 100kHz, a stray coupling of 0.003pF
around the signal path can preclude the 100dB. (By
comparison, the stray capacitance between two adjacent
pins of an IC can be 1pF or more.) Also, high quality supply
bypass capacitors of 0.1
F near the chip provide good
decoupling from a clean, low inductance power source.
But several inches of wire (i.e., a few microhenrys of
inductance) from the power supplies, unless decoupled
by substantial capacitance (
≥10F) near the chip, can
cause a high-Q LC resonance in the hundreds of kHz in the
chip’s supplies or ground reference, impairing stopband
rejection and other specifications at those frequencies. In
demanding filter circuits we have often found that a
compact, carefully laid out printed circuit board with good
ground plane makes a difference of 20dB in both stopband
rejection and distortion performance. Highly selective
circuits can even exhibit these issues at frequencies well
below 100kHz. Finally, equipment to measure filter perfor-
mance can itself introduce distortion or noise floors;
checking for these limits with a wire replacing the filter is
a prudent routine procedure.
fC (Hz)
RIN1A
RIN1B
CIN1
RQ1
R21
RIN2
CIN2
RQ2
R22
100k
5.9k
7.5k
680pF
28k
7.5k
6.34k
68pF
9.31k
11.3k
75k
8.06k
15.4k
560pF
36.5k
13.3k
11.3k
68pF
12.7k
20k
50k
16.9k
35.7k
390pF
56.2k
30.1k
25.5k
68pF
18.7k
44.2k
Amplitude Response
FREQUENCY (kHz)
–120
–60
–80
–100
20
0
–20
–40
1562 TA15b
GAIN
(dB)
10
1000
100
fC = 100kHz
TYPICAL APPLICATIONS
U
(Advanced)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC1562CG-2 | IC FILTER UNIVRSL RC QUAD 20SSOP |
| LTC1562CN#PBF | IC FILTER UNIV RC QUAD LN 16DIP |
| LTC1562CN | IC FILTER UNIV RC QUAD LN 16DIP |
| LTC1562CG#TRPBF | IC FILTER UNIV RC QUAD LN 20SSOP |
| LTC1562CG-2#TRPBF | IC FILTER UNIV RC QUAD LN 20SSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC1562CG#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(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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) |
| LTC1562CG#TR | 功能描述:IC FILTER UNIV RC QUAD LN 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(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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) |
| LTC1562CG#TRPBF | 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(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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) |
| LTC1562CG-2 | 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(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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) |
| LTC1562CG-2#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(biāo)準(zhǔn)包裝:1,000 系列:- 濾波器類型:連續(xù)時(shí)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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