LTC1064-3M 데이터 시트보기 (PDF) - Linear Technology
부품명
상세내역
일치하는 목록
LTC1064-3M Datasheet PDF : 12 Pages
| |||
LTC1064-3
Low Noise, High Frequency,
8th Order Linear Phase Lowpass Filter
FEATURES
■ 8th Order Filter in a 14-Pin Package
■ 95kHz Maximum Corner Frequency
■ No External Components
■ 75:1, 150:1 and 120:1 Clock to Cutoff Frequency
Ratio
■ 60µVRMS Total Wideband Noise
■ 0.03% THD or Better
■ Operates from ±2.37V to ±8V Power Supplies
■ Low Total Output DC Offset
U
APPLICATIO S
■ Antialiasing Filters
■ Smoothing Filters
■ Tracking High Frequency Lowpass Filters
DESCRIPTIO
The LTC®1064-3 is a monolithic 8th order lowpass Bessel
filter, which provides a linear phase response over its
entire passband. An external TTL or CMOS clock pro-
grams the filter’s cutoff frequency. The clock to cutoff
frequency ratio is 75:1 (Pin 10 at V+) or 150:1 (Pin 10 at
V–) or 120:1 (Pin 10 at GND). The maximum cutoff
frequency is 95kHz. No external components are needed.
The LTC1064-3 features low wideband noise and low
harmonic distortion even for input voltages up to 3VRMS.
In fact the LTC1064-3 overall performance competes with
equivalent multiple op amp RC active realizations. The
LTC1064-3 is available in a 14-pin DIP or 16-pin surface
mounted SOL package. The LTC1064-3 is fabricated using
LTC’s enhanced analog CMOS Si-gate process.
The LTC1064-3 is pin compatible with the LTC1064-1,
LTC1064-2 and LTC1064-4.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
8th Order Clock Sweepable Lowpass Bessel Filter
VIN
8V
0.1µF
1
NC
14
OUT C
2
VIN
13
NC
3
LTC1064-3
AGND
V–
12
4 V+
5
AGND
11
fCLK CLOCK = 7MHz
75/150 10 V+
6
NC
7
INV A
9
VOUT
8
NC
–8V
0.1µF
VOUT
1064 TA01a
NOTE: THE POWER SUPPLIES SHOULD BE BYPASSED BY A 0.1µF
OR LARGER CAPACITOR CLOSE TO THE PACKAGE. THE CONNECTI0N
BETWEEN PIN 7 AND PIN 14 SHOULD BE MADE UNDER THE IC PACKAGE.
Measured Frequency Response
0
–15
–30
–45
–60
–75
–90 VS = ±7.5V, fCLK = 7MHz, PIN 10 TO V+,
f–3dB = 95kHz, GROUP DELAY = 6µs
–105
10
100
FREQUENCY (kHz)
1000
1064-3 TA01b
10643fa
1
Share Link: 