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参数资料
| 型号： | LTC1064CN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 2/20页 |
| 文件大小： | 0K |
| 描述： | IC FILTER BUILDNG BLK QUAD 24DIP |
| 标准包装： | 15 |
| 滤波器类型： | 通用开关电容器 |
| 频率 - 截止或中心： | 140kHz |
| 滤波器数： | 4 |
| 滤波器阶数： | 8th |
| 电源电压： | ±2.37 V ~ 8 V |
| 安装类型： | 通孔 |
| 封装/外壳： | 24-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 24-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1324 (CN2011-ZH PDF) |
LTC1064
10
1064fb
fO =
1 +
; fn =
; HOHP f→
=
HON(f = fO) = Q
HOLP –
HOHP ; Q =
1064 F09Eq
fO =
; fn =
; HOHP =
; HOBP =
fCLK
100
R2
R4
RH
RL
MODE 3a (100:1):
NOTE: THE 50:1 EQUATIONS FOR MODE 3A ARE DIFFERENT FROM
THE EQUATIONS FOR MODE 3A OPERATION OF THE LTC1059,
LTC1060 AND LTC1061. START WITH fO, CALCULATE R2/R4, SET R4;
FROM THE Q VALUE, CALCULATE R3:
√
R2
R4
√
fCLK
100
R2
R4
R3 =
; THEN CALCULATE R1 TO
SET THE DESIRED GAIN.
+
R2
1.005
Q
√
R2
16R4
R2
R1
–
R2
R3
R2
16R4
R2
R4
1.005
√
–
R3
R1
HOBP = –
; HOLP(f = 0) =
Q =
R3
16R4
1 –
R4
R1
–
;
R3
R1
–
;
R3
R2
R4
R1
fCLK
2
()
()()
()( )
RH
RL
√
R2
R4
√
fCLK
50
fCLK
50
MODE 3a (50:1):
R2
R1
–
;
fCLK
2
()
HOLP = –
; HON1(f→ 0) =
; HON2 f→
=
;
R4
R1
R2
R1
RG
RL
RG
RL
RG
RH
RG
RH
–
+
∫
LP
+ Σ
AGND
HP
S
1/4 LTC1064
–
BP
R1
R2
VIN
R3
R4
1064 F09
CC
RL
RH
RG
NOTCH
EXTERNAL OP AMP OR INPUT
OP AMP OF THE LTC1064,
SIDE A, B, C, D
–
+
1064 F08Eq
fO =
1 +
; fn =
; Q =
1 +
; HOLP = –
;
fCLK
100
R2
R4
R3
R2
MODE 2 (100:1):
NOTE: THE 50:1 EQUATIONS FOR MODE 2 ARE DIFFERENT FROM THE EQUATIONS
FOR MODE 2 OPERATION OF THE LTC1059, LTC1060 AND LTC1061. START WITH
fO, CALCULATE R2/R4, SET R4; FROM THE Q VALUE, CALCULATE R3:
√
R2
R4
√
R2
R4
√
fO =
1 +
; fn =
; Q =
; HOLP = –
;
fCLK
50
fCLK
50
fCLK
50
MODE 2 (50:1):
R2
R3
R2
16R4
R2
R4
1.005
1 +
√
–
R3
R1
HOBP = –
; HON1(f→ 0) = –
; HON2 = f→
=
R3
16R4
1 –
R2
R4
R3 =
; THEN CALCULATE R1 TO SET THE DESIRED GAIN.
1 +
+
R2
1.005
Q
√
R2
16R4
R2
R1
R2
R4
1 +
R2
R1
–
R2
R1
R2
R4
1 +
R2
R1
R2
R4
1 +
fCLK
2
()
fCLK
2
()
HOBP = –
; HON1(f→ 0) = –
; HON2 f→
= –
R3
R1
R2
R1
R2
R1
R2
R4
1 +
–
+
∫
LP
1064 F08
+ Σ
AGND
NS
1/4 LTC1064
–
R1
R2
VIN
R3
R4
BP
ODES OF OPERATIO
U
W
Figure 8. Mode 2: 2nd Order Filter Providing Notch, Bandpass and Lowpass
Mode 3a
This is an extension of Mode 3 where the highpass and
lowpass outputs are summed through two external resis-
tors RH and RL to create a notch. This is shown in Figure 9.
Mode 3a is more versatile than Mode 2 because the notch
frequency can be higher or lower than the center fre-
quency of the 2nd order section. The external op amp of
Figure 9 is not always required. When cascading the
sections of the LTC1064, the highpass and lowpass
outputs can be summed directly into the inverting input of
the next section. The topology of Mode 3a is useful for
elliptic highpass and notch filters with clock-to-cutoff
frequency ratios higher than 100:1. This is often required
to extend the allowed input signal frequency range and to
avoid premature aliasing.
When the internal clock-to-center frequency ratio is set at
50:1, the design equations for Q and bandpass gain are
different from the 100:1 case.
Figure 9. Mode 3a: 2nd Order Filter Providing Highpass, Bandpass, Lowpass and Notch
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1064CS | 制造商:Linear Technology 功能描述:QUAD SWITCHED CAPACITOR FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, PDSO24 |
| LTC1064CSW | 功能描述:IC FILTR BUILDNG BLK QUAD 24SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1064-CSW | 制造商:LINEAR TECH 功能描述:_ |
| LTC1064CSW#PBF | 功能描述:IC FILTR BUILDNG BLK QUAD 24SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 滤波器 - 有源 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1,000 系列:- 滤波器类型:连续时间，带通低通 频率 - 截止或中心:150kHz 滤波器数:4 滤波器阶数:8th 电源电压:4.74 V ~ 11 V，±2.37 V ~ 5.5 V 安装类型:表面贴装 封装/外壳:28-SOIC（0.295"，7.50mm 宽） 供应商设备封装:28-SOIC W 包装:带卷 (TR) |
| LTC1064CSW#PBF | 制造商:Linear Technology 功能描述:FILTER, LOW PASS, 50KHZ, SOIC-24 |
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