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LTC1061AMJ#TR PDF预览

LTC1061AMJ#TR

更新时间： 2024-02-09 16:15:28
品牌 Logo 应用领域
凌特 - Linear LTE有源滤波器
页数 文件大小 规格书
16页 325K
描述
IC TRIPLE SWITCHED CAPACITOR FILTER, RESISTOR PROGRAMMABLE, UNIVERSAL, CDIP20, 0.300 INCH, CERAMIC, DIP-20, Active Filter

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LTC1061AMJ#TR 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：DIP包装说明：0.300 INCH, CERAMIC, DIP-20
针数：20Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.69有源滤波器类型：SWITCHED CAPACITOR FILTER
中心频率或截止频率最大范围：35 kHz中心频率或截止频率最小范围：0.0001 kHz
JESD-30 代码：R-GDIP-T20JESD-609代码：e0
长度：26.92 mm负电源电压最大值（Vsup）：-8 V
负电源电压最小值（Vsup）：-2.37 V标称负供电电压 (Vsup)：-5 V
功能数量：3端子数量：20
最高工作温度：125 °C最低工作温度：-55 °C
封装主体材料：CERAMIC, GLASS-SEALED封装代码：DIP
封装形状：RECTANGULAR封装形式：IN-LINE
极和零点：2 AND 0认证状态：Not Qualified
响应：UNIVERSAL座面最大高度：5.08 mm
最大供电电压 (Vsup)：8 V最小供电电压 (Vsup)：2.37 V
标称供电电压 (Vsup)：5 V表面贴装：NO
温度等级：MILITARY端子面层：Tin/Lead (Sn/Pb)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL传递特性：RESISTOR PROGRAMMABLE
宽度：7.62 mmBase Number Matches：1

LTC1061AMJ#TR 数据手册

 浏览型号LTC1061AMJ#TR的Datasheet PDF文件第4页浏览型号LTC1061AMJ#TR的Datasheet PDF文件第5页浏览型号LTC1061AMJ#TR的Datasheet PDF文件第6页浏览型号LTC1061AMJ#TR的Datasheet PDF文件第8页浏览型号LTC1061AMJ#TR的Datasheet PDF文件第9页浏览型号LTC1061AMJ#TR的Datasheet PDF文件第10页 
LTC1061  
W
U
ODES OF OPERATIO  
Description and Applications  
Figure 4, is the classical state variable configuration pro-  
viding highpass, bandpass and lowpass 2nd order filter  
functions.  
1. Primary Modes: There are two basic modes of opera-  
tion, Mode 1 and Mode 3. In Mode 1, the ratio of the  
external clock frequency to the center frequency of each  
2nd order section is internally fixed at 50:1 or 100:1. In  
Mode 3, this ratio can be adjusted above or below 50:1 or  
100:1. The side C of the LTC1061 can be connected only  
in Mode 3. Figure 3 illustrates Mode 1 providing 2nd order  
notch, lowpass, and bandpass outputs (for definition of  
filter functions, refer to the LTC1060 data sheet). Mode 1  
can be used to make high order Butterworth 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 and with unity-gain. Mode 3,  
Since the input amplifier is within the resonant loop, its  
phase shift affects the high frequency operation of the  
filter and therefore, Mode 3 is slower than Mode 1. Mode  
3 can be used to make high order all-pole bandpass,  
lowpass, highpass and notch filters. Mode 3 as well as  
Mode 1 is a straightforward mode to use and the filter’s  
dynamicscaneasilybeoptimized.Figure5illustratesa6th  
order lowpass Butterworth filter operating with up to  
40kHz cutoff frequency and with up to 200kHz input  
frequency. Sides A, B are connected in Mode 1 while side  
C is connected in Mode 3. The lower Q section was placed  
in side C, Mode 3, to eliminate any early Q enhancement.  
This could happen when the clock approaches 2MHz. The  
measured frequency response is shown in Figure 6. The  
attenuation floor is limited by the crosstalk between the  
three different sections operating with a clock frequency  
above 1MHz. The measured wideband noise was  
150µVRMS. For limited temperature range the filter of  
Figure5worksupto2.5MHzclockfrequencythusyielding  
a 50kHz cutoff.  
R3  
R2  
N
S
LP  
BP  
R1  
V
–
+
IN  
–
+
Σ
∫
∫
1061 F03  
1/3 LTC1061  
f
CLK  
AGND  
f
O
=
; f = f  
n O  
100(50)  
R3  
R1  
R2  
R1  
R2  
R1  
H
= –  
; H  
= –  
; H  
= –  
ON1  
OLP  
OBP  
V
R13  
R3  
R2  
OUT  
Q =  
1
2
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
Figure 3. Mode 1: 2nd Order Filter Providing Notch,  
Bandpass, Lowpass  
R32  
R22  
R33  
R23  
3
C
C
4
5
R4  
R3  
R2  
LTC1061  
R12  
R41  
6
–
V
7
2
R31  
R21  
8
T L CLOCK  
HP  
S
LP  
BP  
< 2.5MHz  
9
R1  
V
–
+
IN  
–
10  
+
+
V
Σ
∫
∫
R11  
V
1061 F04  
IN  
1/3 LTC1061  
STANDARD 1%  
RESISTOR VALUES  
HARMONIC DISTORTION WITH f  
= 2MHz  
CLK  
f
R2  
R4  
R3 R2  
CLK  
AGND  
2ND HARMONIC  
f
IN  
f
=
; Q =  
O
R11 = 20k R21 = 20k  
R31 = 11k R41 = 20k  
R12 = 20k R22 = 20k  
R32 = 14k R23 = 10k  
R13 = 10k R33 = 17.8k  
LTC1061 F05  
R2 R4  
100(50)  
√
√
10kHz, 1V  
20kHz, 1V  
30kHz, 1V  
40kHz, 1V  
–74dB  
–62dB  
–62dB  
–62dB  
RMS  
RMS  
RMS  
RMS  
R3  
R1  
R4  
R1  
R2  
R1  
H
= – ; H  
= – ; H  
= –  
OHP  
OBP  
OLP  
0.16  
R4 × 1.2MHz  
NOTE: ADD C FOR Q > 5 AND f  
> 1MHz, SUCH AS C ≅  
C
C
CLK  
Figure 4. Mode 3: 2nd Order Filter Providing Highpass,  
Bandpass, Lowpass  
Figure 5. 6th Order Butterworth Lowpass Filter with  
Cutoff Frequency up to 45kHz  
1061fe  
7
1...45678910...16

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