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LTC1069-6C PDF预览

LTC1069-6C

更新时间: 2024-11-08 22:06:39
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
8页 230K
描述
Single Supply, Very Low Power, Elliptic Lowpass Filter

LTC1069-6C 数据手册

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LTC1069-6  
Single Supply, Very Low  
Power, Elliptic Lowpass Filter  
U
FEATURES  
DESCRIPTION  
The LTC®1069-6 is a monolithic low power, 8th order low-  
pass filter optimized for single 3V or single 5V supply  
operation. The LTC1069-6 typically consumes 1mA under  
single 3V supply operation and 1.2mA under 5V operation.  
8th Order Elliptic Filter in SO-8 Package  
Single 3V Operation: Supply Current: 1mA (Typ)  
fCUTOFF: 14kHz (Max)  
S/N Ratio: 72dB  
Single 5V Operation: Supply Current: 1.2mA (Typ)  
The cutoff frequency of the LTC1069-6 is clock tunable and it  
is equal to the clock frequency divided by 50. The input signal  
is sampled twice per clock cycle to lower the risk of aliasing.  
fCUTOFF: 20kHz (Max)  
S/N Ratio: 79dB  
±0.1dB Passband Ripple Up to 0.9fCUTOFF (Typ)  
The typical passband ripple is ±0.1dB up to 0.9fCUTOFF  
.
42dB Attenuation at 1.3fCUTOFF  
The gain at fCUTOFF is 0.7dB. The transition band of the  
LTC1069-6featuresprogressiveattenuationreaching42dB  
at 1.3fCUTOFF and 70dB at 2.1fCUTOFF. The maximum  
stopband attenuation is 72dB.  
66dB Attenuation at 2.0fCUTOFF  
70dB Attenuation at 2.1fCUTOFF  
Wide Dynamic Range, 75dB or More (S/N + THD),  
Under Single 5V Operation  
Wideband Noise: 120µVRMS  
Clock-to-fCUTOFF Ratio: 50:1  
The LTC1069-6 can be clock tuned for cutoff frequencies  
up to 20kHz (single 5V supply) and for cutoff frequencies  
up to 14kHz (single 3V supply).  
Internal Sample Rate: 100:1  
U
The low power feature of the LTC1069-6 does not penalize  
the device’s dynamic range. With single 5V supply and an  
input range of 0.4VRMS to 1.4VRMS, the Signal-to-(Noise  
+ THD) ratio is 70dB. The wideband noise of the  
APPLICATIONS  
Handheld Instruments  
Telecommunication Filters  
Antialiasing Filters  
Smoothing Filters  
LTC1069-6 is 125µVRMS  
.
Other filter responses with higher speed can be obtained.  
Please contact LTC Marketing for details.  
Audio  
Multimedia  
The LTC1069-6 is available in an 8-pin SO package.  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Frequency Response  
10  
V
= 500mV  
RMS  
IN  
Single 3V Supply 10kHz Elliptic Lowpass Filter  
0
–10  
–20  
–30  
–40  
–50  
–60  
–70  
AGND  
V
OUT  
3V  
+
0.47µF  
V
V
0.1µF  
LTC1069-6  
NC  
NC  
f
= 500kHz  
V
CLK  
CLK  
IN  
1069-6 TA01  
–80  
5
10  
20  
FREQUENCY (kHz)  
25  
15  
1069-6 TA02  
1

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