- 您现在的位置：买卖IC网 > PDF目录11030 > LTC1067-50CGN (Linear Technology)IC FILTR BLDNGBLK R-R DUAL16SSOP PDF资料下载
参数资料
| 型号： | LTC1067-50CGN |
| 厂商： | Linear Technology |
| 文件页数： | 20/20页 |
| 文件大小： | 0K |
| 描述： | IC FILTR BLDNGBLK R-R DUAL16SSOP |
| 标准包装： | 100 |
| 滤波器类型： | 通用开关电容器 |
| 频率 - 截止或中心： | 40kHz |
| 滤波器数： | 2 |
| 滤波器阶数： | 4th |
| 电源电压： | 2.7 V ~ 11 V，±2.7 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-SSOP |
| 包装： | 管件 |
9
LTC1067/LTC1067-50
ODES OF OPERATIO
U
W
Mode 1
In Mode 1, the ratio of the external clock frequency to the
center frequency of each 2nd order section is internally
fixed at the part’s nominal ratio. Figure 3 illustrates Mode
1 providing 2nd order notch, lowpass and bandpass
outputs. Mode 1 can be used to make high order Butter-
worth lowpass filters; it can also be used to make low Q
notches and for cascading 2nd order bandpass functions
tuned at the same center frequency. Mode 1 is faster than
Mode 3.
Please refer to the Operating Limits paragraph under Appli-
cations Information for a guide to the use of capacitor CC.
Linear Technology’s universal switched-capacitor filters
are designed with a fixed internal, nominal fCLK/fO ratio.
The LTC1067 has a 100:1 fCLK/fO ratio and the
LTC1067-50 has a 50:1 fCLK/fO ratio. Filter designs often
require the fCLK/fO ratio of each section to be different from
the nominal ratio and in most cases different from each
other. Ratios other than the nominal value are possible
with external resistors. Operating modes use external
resistors, connected in different arrangements to realize
different fCLK/fO ratios. By choosing the proper mode, the
fCLK/fO ratio can be increased or decreased from the part’s
nominal ratio.
The choice of operating mode also effects the transfer
function at the HP/N pins. The LP and BP pins always give
the lowpass and bandpass transfer functions respectively,
regardless of the mode utilized. The HP/N pins have a
different transfer function depending on the mode used.
Mode 1 yields a notch transfer function. Mode 3 yields a
highpass transfer function. Mode 2 yields a highpass-
notch transfer function (i.e., a highpass with a stopband
notch). More complex transfer functions, such as low-
pass-notch, allpass or complex zeros, are achieved by
summing two or more of the LP, BP or HP/N outputs. This
is illustrated in sections Mode 2n and Mode 3a.
Choosing the proper mode(s) for a particular application
is not trivial and involves much more than just adjusting
the fCLK/fO ratio. Listed here are six of the nearly twenty
modes available. To make the design process simpler and
quicker, Linear Technology has developed the FilterCAD
TM
for Windows
design software. FilterCAD is an easy-to-
use, powerful and interactive filter design program. The
designer can enter a few filter specifications and the
program produces a full schematic. FilterCAD allows the
designer to concentrate on the filter’s transfer function
and not get bogged down in the details of the design.
Alternatively, those who have experience with the Linear
Technology family of parts can control all of the details
themselves. For a complete listing of all the operating
modes, consult the appendices of the FilterCAD manual or
the Help files in FilterCAD. FilterCAD can be obtained free
of charge on the Linear Technology web site (http://
www.linear-tech.com) or you can order the FilterCAD
CD-ROM by contacting Linear Technology’s marketing
department.
FilterCAD is a trademark of Linear Technology Corporation.
Windows is a registered trademark of Microsoft Corporation.
Mode 1b
Mode 1b is derived from Mode 1. In Mode 1b (Figure 4)
two additional resistors R5 and R6 are added to lower the
amount of voltage fed back from the lowpass output into
the input of the SA (or SB) switched-capacitor summer.
This allows the filter’s clock-to-center frequency ratio to
be adjusted beyond the part’s nominal ratio. Mode 1b
maintains the speed advantages of Mode 1 and should be
considered an optimum mode for high Q designs with fCLK
to fCUTOFF (or fCENTER) ratios greater than the part’s
nominal ratio.
Figure 3. Mode 1, 2nd Order Filter Providing Notch,
Bandpass and Lowpass Outputs
–
+
Σ
∫
AGND
NOTE: RATIO = 100 FOR LTC1067
= 50 FOR LTC1067-50
R1
N
BP
LP
VIN
1067 F03
+
–
S
R2
R3
CC
fO =
; fn = fO
Q =
; HON = –
; HOBP = –
HOLP = HON
R2
R1
R3
R1
R3
R2
fCLK
RATIO
相关PDF资料 |
PDF描述 |
|---|---|
| LTC1060CN | IC FILTER BUILDING BLOCK 20-DIP |
| VE-27N-IY-F4 | CONVERTER MOD DC/DC 18.5V 50W |
| VE-27M-IY-F1 | CONVERTER MOD DC/DC 10V 50W |
| VE-27L-IY-F3 | CONVERTER MOD DC/DC 28V 50W |
| VE-27K-IY-F1 | CONVERTER MOD DC/DC 40V 50W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC1067-50CGN#PBF | 功能描述:IC FILTR BLDNGBLK R-R DUAL16SSOP 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) |
| LTC1067-50CGN#TR | 功能描述:IC FILTR BLD BLK DUAL R-R 16SSOP 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) |
| LTC1067-50CGN#TRPBF | 功能描述:IC FILTR BLDNGBLK R-R DUAL16SSOP 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) |
| LTC1067-50CS | 功能描述:IC FILTR BLDNGBLK R-R DUAL16SOIC 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) |
| LTC1067-50CS#PBF | 功能描述:IC FILTR BLDNGBLK R-R DUAL16SOIC 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) |
发布紧急采购，3分钟左右您将得到回复。