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LTC1164-5 PDF预览

LTC1164-5

更新时间： 2024-02-13 08:34:50
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
12页 207K
描述
Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter

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LTC1164-5 技术参数

是否Rohs认证： 符合生命周期：Obsolete
零件包装代码：DIP包装说明：DIP,
针数：14Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.59有源滤波器类型：SWITCHED CAPACITOR FILTER
其他特性：PROGRAMMABLE BUTTERWORTH/BESSEL RESPONSE中心频率或截止频率最大范围：20 kHz
JESD-30 代码：R-GDIP-T14JESD-609代码：e3
负电源电压最大值（Vsup）：-8 V负电源电压最小值（Vsup）：-2.375 V
标称负供电电压 (Vsup)：-7.5 V功能数量：1
端子数量：14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峰值回流温度（摄氏度）：NOT SPECIFIED
极和零点：8 AND 0认证状态：Not Qualified
响应：LOWPASS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)：2.375 V
标称供电电压 (Vsup)：7.5 V表面贴装：NO
温度等级：MILITARY端子面层：Matte Tin (Sn)
端子形式：THROUGH-HOLE端子节距：2.54 mm
端子位置：DUAL处于峰值回流温度下的最长时间：NOT SPECIFIED
传递特性：PIN PROGRAMMABLE宽度：7.62 mm
Base Number Matches：1

LTC1164-5 数据手册

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LTC1164-5  
U
W
U U  
APPLICATIO S I FOR ATIO  
Any parasitic switching transients during the rise and fall  
edges of the incoming clock are not part of the clock  
feedthroughspecifications. Switchingtransientshavefre-  
quency contents much higher than the applied clock; their  
amplitude strongly depends on scope probing techniques  
as well as grounding and power supply bypassing. The  
clock feedthrough, if bothersome, can be greatly reduced  
by adding a simple R/C lowpass network at the output of  
the filter pin (Pin 9). This R/C will completely eliminate any  
switching transient.  
Aliasing  
Aliasing is an inherent phenomenon of sampled data  
systems and it occurs when input frequencies close to the  
sampling frequency are applied. For the LTC1164-5 case  
at 100:1, an input signal whose frequency is in the range  
of fCLK ±2.5% will be aliased back into the filter’s pass-  
band. If, for instance, an LTC1164-5 operating with a  
100kHz clock and 1kHz cutoff frequency receives a 98kHz  
10mV input signal, a 2kHz 56µV alias signal will appear at  
its output. When the LTC1164-5 operates with a clock-to-  
cutoff frequency of 50:1, aliasing occurs at twice the clock  
frequency. Table 4 shows details.  
Wideband Noise  
The wideband noise of the filter is the total RMS value of  
the device’s noise spectral density and it is used to  
determine the operating signal-to-noise ratio. Most of its  
frequency contents lie within the filter passband and it  
cannot be reduced with post filtering. For instance, the  
Table 4. Aliasing Data (fCLK = 100kHz, VS = ±5V)  
INPUT FREQUENCY  
(V = 1V  
OUTPUT LEVEL  
(Relative to Input)  
OUTPUT FREQUENCY  
(Aliased Frequency)  
)
RMS  
IN  
(f /f ) = 100:1, f  
= 1kHz  
CLK  
C
CUTOFF  
97.0kHz  
97.5kHz  
98.0kHz  
98.5kHz  
99.0kHz  
99.5kHz  
–102.0dB  
–65.0dB  
–45.0dB  
–23.0dB  
–4.0dB  
3.0kHz  
2.5kHz  
2.0kHz  
1.5kHz  
1.0kHz  
0.5kHz  
LTC1164-5widebandnoiseat±2.5Vsupplyis100µVRMS  
,
95µVRMS of which have frequency contents from DC up to  
the filter’s cutoff frequency. The total wideband noise  
(µRMS)isnearlyindependentofthevalueoftheclock.The  
clock feedthrough specifications are not part of the wide-  
band noise.  
–0.3dB  
(f /f ) = 50:1, f  
= 2kHz  
CLK  
C
CUTOFF  
197.0kHz  
197.5kHz  
198.0kHz  
198.5kHz  
199.0kHz  
199.5kHz  
–23.0dB  
3.0kHz  
2.5kHz  
2.0kHz  
1.5kHz  
1.0kHz  
0.5kHz  
–12.0dB  
–5.0dB  
–1.8dB  
–1.0dB  
–0.8dB  
Speed Limitations  
The LTC1164-5 optimizes AC performance versus power  
consumption. To avoid op amp slew rate limiting at  
maximum clock frequencies, the signal amplitude should  
be kept below a specified level as shown in Table 3.  
Table 5. Transient Response of LTC Lowpass Filters  
DELAY  
TIME*  
(SEC)  
RISE  
TIME**  
(SEC)  
SETTLING OVER-  
TIME***  
(SEC)  
Table 3. Maximum VIN vs VS and fCLK  
SHOOT  
(%)  
LOWPASS FILTER  
POWER SUPPLY  
V = ±7.5V  
MAXIMUM f  
MAXIMUM V  
IN  
CLK  
LTC1064-3 Bessel  
LTC1164-5 Bessel  
LTC1164-6 Bessel  
0.50/f  
0.43/f  
0.43/f  
0.34/f  
0.34/f  
0.34/f  
0.80/f  
0.85/f  
1.15/f  
0.5  
0
1
1.5MHz  
1V  
(f > 35kHz)  
RMS IN  
C
C
C
C
C
C
C
C
C
S
0.5V  
(f > 250kHz)  
RMS IN  
V = ±7.5V  
1.0MHz  
1.0MHz  
1.0MHz  
3V  
0.7V  
(f > 25kHz)  
RMS IN  
(f > 250kHz)  
RMS IN  
S
LTC1264-7 Linear Phase  
LTC1164-7 Linear Phase  
LTC1064-7 Linear Phase  
1.15/f  
1.20/f  
1.20/f  
0.36/f  
0.39/f  
0.39/f  
2.05/f  
2.20/f  
2.20/f  
5
5
5
C
C
C
C
C
C
C
C
C
V = ±5.0V  
S
2.5V  
0.5V  
(f > 25kHz)  
RMS IN  
(f > 100kHz)  
RMS IN  
LTC1164-5 Butterworth  
LTC1164-6 Elliptic  
0.80/f  
0.85/f  
0.48/f  
0.54/f  
2.40/f  
4.30/f  
11  
18  
C
C
C
C
C
C
Single 5V  
0.7V  
(f > 25kHz)  
RMS IN  
0.5V (f > 100kHz)  
RMS IN  
LTC1064-4 Elliptic  
LTC1064-1 Elliptic  
0.90/f  
0.85/f  
0.54/f  
0.54/f  
4.50/f  
6.50/f  
20  
20  
C
C
C
C
C
C
* To 50% ±5%, ** 10% to 90% ±5%, *** To 1% ±0.5%  
10  
1...789101112

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