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參數資料
| 型號： | LTC1068IG |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Clock-Tunable, Quad Second Order, Filter Building Blocks |
| 中文描述： | QUAD SWITCHED CAPACITOR FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO28 |
| 封裝： | 5.3 MM, PLASTIC, SSOP-28 |
| 文件頁數： | 12/28頁 |
| 文件大?。?/td> | 535K |
| 代理商： | LTC1068IG |
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12
LTC1068 Series
ODES OF OPERATIO
W
U
–
+
Σ
∫
∫
AGND
R1
HP
BP
LP
V
IN
1068 F06
+
–
S
1/4 LTC1068
R2
R3
C
C
R4
f
O
=
f
CLK
RATIO
R3
( )
R2
√
R2
R4
R3
(RATIO)(0.32)(R4)
(
)
1
1 –
(RATIO)(0.32)(R4)
)
1 –
√
R2
R4
H
OHP
= – R2
OBP
= – R1
; H
OLP
= –R1
; Q = 1.005
DEVICE
LTC1068
LTC1068-200
LTC1068-50
LTC1068-25
RATIO
100
200
50
25
Figure 7. Mode 2, 2nd Order Filter Providing Highpass
Notch, Bandpass and Lowpass Outputs
–
+
Σ
∫
∫
AGND
R1
HPN
BP
LP
V
IN
1068 F07
+
–
S
R2
R3
C
C
R4
f
O
= f
n
=
√
Q = 1.005 R2
CLK
f
CLK
RATIO
R2
R4
1 +
√
R2
R4
1 +
R3
(RATIO)(0.32)(R4)
(
)
1
1–
R3
(RATIO)(0.32)(R4)
(
)
1
1–
H
OHPN
= – R2
O
); H
OHPN
= –
R2
R1
R2
R1
1
R2
R4
1 +
(
)
1
R2
R4
1 +
(
)
(DC GAIN)
H
OBP
= –R1
; H
OLP
= –
DEVICE
LTC1068
LTC1068-200
LTC1068-50
LTC1068-25
RATIO
100
200
50
25
Figure 6. Mode 3, 2nd Order Section Providing
Highpass, Bandpass and Lowpass Outputs
–
+
Σ
∫
∫
AGND
R1
N
BP
LP
V
IN
1068 F05
+
–
S
R2
R3
C
C
R5
R6
f
O
=
; f
n
= f
O
Q = R3
ON
= – R1
OBP
= –
√
R6
H
OLP
= – R1
R3
R1
f
CLK
RATIO
R6
(R6 + R5)
R6 + R5
√
R6
(R6 + R5)
)
DEVICE
LTC1068
LTC1068-200
LTC1068-50
LTC1068-25
RATIO
100
200
50
25
Figure 5. Mode 1b, 2nd Order Filter Providing Notch,
Bandpass and Lowpass Outputs
Mode 3
In Mode 3, the ratio of the external clock frequency to the
center frequency of each 2nd order section can be ad-
justed above or below the parts nominal ratio. Figure 6
illustrates Mode 3, the classical state variable configura-
tion, providing highpass, bandpass and lowpass 2nd
order filter functions. Mode 3 is slower than Mode 1. Mode
3 can be used to make high order all-pole bandpass,
lowpass and highpass filters.
Please refer to the Operating Limits paragraph under Appli-
cations Information for a guide to the use of capacitor C
C
.
Mode 2
Mode 2 is a combination of Mode 1 and Mode 3, shown in
Figure 7. With Mode 2, the clock-to-center frequency ratio,
f
CLK
/f
O
, is always less than the part’s nominal ratio. The
advantage of Mode 2 is that it provides less sensitivity to
resistor tolerances than does Mode 3. Mode 2 has a
highpass notch output where the notch frequency de-
pends solely on the clock frequency and is therefore less
than the center frequency, f
O
.
Please refer to the Operating Limits paragraph under Appli-
cations Information for a guide to the use of capacitor C
C
.
相關PDF資料 |
PDF描述 |
|---|---|
| LTC1068IG-200 | CONNECTOR ACCESSORY |
| LTC1068IG-25 | Metal Connector Backshell; Connector Shell Size:15; For Use With:MIL-C-3899 Series III and IV Connectors; Leaded Process Compatible:No; Peak Reflow Compatible (260 C):No; Contact Plating:Cadmium Over Nickel RoHS Compliant: NA |
| LTC1068IG-50 | STR RELIEF SZ 17 BLK ANDZ RoHS Compliant: No |
| LTC1068IN | CONNECTOR ACCESSORY |
| LTC1068 | Clock-Tunable, Quad Second Order, Filter Building Blocks |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LTC1068IG#PBF | 功能描述:IC FILTR BUILDNG BLK QUAD 28SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產品培訓模塊: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:4 濾波器階數: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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1068IG#PBF | 制造商:Linear Technology 功能描述:IC, FILTER BUILDING BLOCK, 50KHZ SSOP-28 |
| LTC1068IG#TR | 功能描述:IC FILTER BUILDG BLK QUAD 28SSOP RoHS:否 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產品培訓模塊: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:4 濾波器階數: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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1068IG#TRPBF | 功能描述:IC FILTR BUILDNG BLK QUAD 28SSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 濾波器 - 有源 系列:- 產品培訓模塊: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:4 濾波器階數: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） 供應商設備封裝:28-SOIC W 包裝:帶卷 (TR) |
| LTC1068IG-200 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Clock-Tunable, Quad Second Order, Filter Building Blocks |
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