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LTC1064CJ PDF预览

LTC1064CJ

更新时间: 2024-01-15 03:46:00
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
16页 389K
描述
Low Noise, Fast, Quad Universal Filter Building Block

LTC1064CJ 数据手册

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LTC1064  
Low Noise, Fast, Quad  
Universal Filter Building Block  
U
FEATURES  
DESCRIPTION  
The LTC®1064 consists of four high speed, low noise  
switched-capacitor filter building blocks. Each filter build-  
ing block, together with an external clock and three to five  
resistors can provide various 2nd order functions like  
lowpass, highpass, bandpass and notch. The center fre-  
quency of each 2nd order function can be tuned with an  
external clock, or a clock and resistor ratio. For Q 5, the  
center frequency range is from 0.1Hz to 100kHz. For Q ≤  
3, the center frequency range can be extended to 140kHz.  
Up to 8th order filters can be realized by cascading all four  
2nd order sections. Any classical filter realization (such as  
Butterworth,Cauer,BesselandChebyshev)canbeformed.  
Four Filters in a 0.3-Inch Wide Package  
One Half the Noise of the LTC1059/LTC1060/  
LTC1061 Devices  
Maximum Center Frequency: 140kHz  
Maximum Clock Frequency: 7MHz  
Clock-to-Center Frequency Ratio of 50:1 and 100:1  
Simultaneously Available  
Power Supplies: ±2.375V to ±8V  
Low Offsets  
Low Harmonic Distortion  
Customized Version with Internal Resistors  
Available  
U
A customized monolithic version of the LTC1064 includ-  
ing internal thin film resistors can be obtained for high  
volume applications. Consult LTC Marketing for details.  
APPLICATIONS  
Anti-Aliasing Filters  
Wide Frequency Range Tracking Filters  
Spectral Analysis  
The LTC1064 is manufactured using Linear Technology’s  
enhanced LTCMOSTM silicon gate process.  
Loop Filters  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
LTCMOS is a trademark of Linear Technology Corporation.  
U
TYPICAL APPLICATION  
Clock-Tunable 8th Order Cauer Lowpass Filter with fCUTOFF up to 100kHz  
13k  
66.5k  
R
H2  
102k  
Gain vs Frequency  
PIN 12  
22.1k  
1
2
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
14  
13  
V
INV B  
HPB/NB  
BPB  
INV C  
HPC/NC  
BPC  
IN  
10k  
10k  
0
–15  
18.25k  
10.7k  
12.1k  
17.4k  
3
R
4
L2  
LPB  
LPC  
26.7k  
–30  
5
SB  
SC  
–45  
f
= 5MHz  
CLK  
6
AGND  
V
RIPPLE = ±0.1dB  
–8V  
–60  
0.1µF  
LTC1064  
7
+
8V  
V
CLK  
50/100  
LPD  
5MHz  
8V  
–75  
0.1µF  
10k  
f
= 1MHz  
8
CLK  
SA  
–90  
RIPPLE = ±0.05dB  
V
OUT  
9
LPA  
–105  
–120  
–135  
41.2k  
12.7k  
14k  
49.9K  
11.5K  
10  
11  
12  
BPA  
BPD  
HPA/NA  
INV A  
HPD  
1k  
10k  
100k  
1M  
(FROM  
INV D  
INPUT FREQUENCY (Hz)  
R
, R )  
H2 L2  
121k  
10k  
1064 TA02  
FOR f  
CLK  
= 5MHz, ADD C1 = 10pF BETWEEN PINS 4, 1  
C2 = 10pF BETWEEN PINS 21, 24  
WIDEBAND NOISE 140µV  
RMS  
1064 TA01  
C3 = 27pF BETWEEN PINS 9, 12  
1

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