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参数资料
| 型号： | LTC1069-7IS8#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC FILTR 8TH ORDER LOWPASS 8SOIC |
| 标准包装： | 100 |
| 滤波器类型： | 线性相位，低通开关电容器 |
| 频率 - 截止或中心： | 200kHz |
| 滤波器数： | 1 |
| 滤波器阶数： | 8th |
| 电源电压： | ±5V，5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 管件 |
LTC1069-7
1
10697fa
TYPICAL APPLICATION
DESCRIPTION
Linear Phase
8th Order Lowpass Filter
The LTC1069-7 is a monolithic, clock-tunable, linear
phase, 8th order lowpass lter. The amplitude response
of the lter approximates a raised cosine lter with an
alpha of one. The gain at the cutoff frequency is – 3dB and
the attenuation at twice the cutoff frequency is 43dB. The
Single 5V Supply, Linear Phase 100kHz Lowpass Filter
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
FEATURES
APPLICATIONS
n 8th Order, Linear Phase Filter in SO-8 Package
n Raised Cosine Amplitude Response
n – 43dB Attenuation at 2× fCUTOFF
n Wideband Noise: 140μVRMS
n Operates from Single 5V Supply to
±5V Power Supplies
n Clock-Tunable to 200kHz with ±5V Supplies
n Clock-Tunable to 120kHz with Single 5V Supply
n Digital Communication Filter
n Antialiasing Filter with Linear Phase
n Smoothing Filters
AGND
V+
NC
VIN
VOUT
V–
NC
CLK
LTC1069-7
fCLK = 2.5MHz
5V
0.47μF
0.1μF
1069-7 TA01
FREQUENCY (kHz)
10
–70
GAIN
(dB)
–60
–50
–40
–30
10
100
1000
1069-7 TA02
–20
–10
0
cutoff frequency of the LTC1069-7 is set by an external
clock and is equal to the clock frequency divided by 25.
The ratio of the internal sampling frequency to the cutoff
frequency is 50:1 that is, the input signal is sampled
twice per clock cycle to lower the risk of aliasing. The
LTC1069-7 can be operated from a single 5V supply up
to dual ±5V supplies.
The gain and phase response of the LTC1069-7 can be
used in digital communication systems where pulse
shaping and channel bandwidth limiting must be carried
out. Any system that requires an analog lter with linear
phase and sharper roll off than conventional Bessel lters
can use the LTC1069-7.
The LTC1069-7 has a wide dynamic range. With ±5V
supplies and an input range of 0.1VRMS to 2VRMS, the
signal-to-(noise + THD) ratio is ≥ 60dB. The wideband noise
of the LTC1069-7 is 140μVRMS.UnlikeotherLTC1069-Xlters,
the typical passband gain of the LTC1069-7 is equal to –1V/V.
The LTC1069-7 is available in an SO-8 package.
Otherlterresponseswithlowerpower/speedspecications
can be obtained. Please contact LTC Marketing.
Frequency Response
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