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LTC1164-8CN Datasheet

  • LTC1164-8CN

  • Ultraselective, Low Power 8th Order Elliptic Bandpass Filter...

  • 12頁(yè)

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LTC1164-8
Ultraselective, Low Power
8th Order Elliptic Bandpass Filter
with Adjustable Gain
FEATURES
s
s
s
s
s
s
DESCRIPTION
The LTC
廬
1164-8 is a monolithic ultraselective, 8th order,
elliptic bandpass filter. The passband of the LTC1164-8 is
tuned with an external clock and the clock-to-center fre-
quency ratio is 100:1. The 鈥?3dB pass bandwidth is typi-
cally 1% of the filter center frequency. The stopband
attenuation of the LTC1164-8 is greater than 50dB. The
lower and upper stopband frequencies are less than
0.96 鈥?center frequency and greater than 1.04 鈥?center
frequency, respectively.
The LTC1164-8 requires an external op amp and two
external resistors (see the circuit below). The filter鈥檚 gain
at center frequency is set by the ratio R
IN
/R
F
. For a gain
equal to one and an optimum dynamic range, R
F
should be
set to 61.9k and R
IN
should be 340k. For gains other than
one, R
IN
= 340k/Gain. Gains up to 1000 are obtainable.
Setting the filter鈥檚 gain with input resistor R
IN
does not
increase the filter鈥檚 wideband noise. The 270碌V
RMS
wideband noise of the LTC1164-8 is independent of the
filter鈥檚 center frequency.
The LTC1164-8 is available in a 14-pin PDIP or a 16-pin
surface mount SO Wide package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
s
Ultraselectivity
(50dB Attenuation at
鹵4%
of Center Frequency)
Adjustable Passband Gain
Noise Independent of Gain
Filter Noise: 270碌V
RMS
, V
S
= Single 5V Supply
Clock-Tunable (Center Frequency = f
CLK
/100)
Center Frequencies up to 5kHz, V
S
=
鹵5V
(Typical I
SUPPLY
= 3.2mA)
Center Frequencies up to 4kHz, V
S
= Single 5V Supply
(Typical I
SUPPLY
= 2.3mA)
APPLICATIONS
s
s
s
s
Asynchronous Narrowband Signal Detectors
Low Frequency Asynchronous Demodulators
Handheld Spectrum Analyzers
In-Band Tone Signaling Detectors
TYPICAL APPLICATION
Ultranarrow 1kHz Bandpass Filter with Gain = 10
Gain = 340k/R
IN
, 1/(2蟺 鈥?R
F
鈥?C
F
)
鈮?/div>
10 鈥?Center Frequency
R
IN
34k
V
IN
5V
1
2
3
4
5
6
7
LTC1164-8
14
13
11
10
9
8
3
SHORT CONNECTION UNDER IC AND
SHIELDED BY A GROUND PLANE
2
GAIN (dB)
30
20
10
0
C
F
200pF
R
F
61.9k
5V
12
鈥?V
100kHz
鈥?0
鈥?0
鈥?0
鈥?0
鈥?/div>
+
7
6
V
OUT
LT
廬
1006
4
鈥?V
鈥?0
鈥?0
LTC1164-8 鈥?TA01
鈥?0
0.90
U
U
U
Frequency Response
50dB
0.95
1.05
1.00
FREQUENCY (kHz)
1.10
1.15
1164-8 TA02
1

LTC1164-8CN 產(chǎn)品屬性

  • 25

  • 集成電路 (IC)

  • 接口 - 濾波器 - 有源

  • -

  • 橢圓帶通開關(guān)電容器

  • 7kHz

  • 1

  • 8th

  • 4.75 V ~ 16 V，±2.375 V ~ 8 V

  • 通孔

  • 14-DIP（0.300"，7.62mm）

  • 14-PDIP

  • 管件

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