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參數(shù)資料
| 型號(hào)： | LTC1164MJ |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Low Power, Low Noise, Quad Universal Filter Building Block |
| 中文描述： | QUAD SWITCHED CAPACITOR FILTER, BUTTERWORTH/BESSEL/ELLIPTIC/CHEBYSHEV, UNIVERSAL, CDIP24 |
| 封裝： | 0.300 INCH, HERMETIC SEALED, CERDIP-24 |
| 文件頁(yè)數(shù)： | 1/12頁(yè) |
| 文件大?。?/td> | 204K |
| 代理商： | LTC1164MJ |
1
LTC1164-5
Low Power 8th Order
Pin Selectable Butterworth
or Bessel Lowpass Filter
DESCRIPTIOU
Butterworth 20kHz Anti-Aliasing Filter
I
Pin Selectable Butterworth or Bessel Response
I
4mA Supply Current with
±
5V Supplies
I
f
CUTOFF
up to 20kHz
I
100
μ
V
RMS
Wideband Noise
I
THD < 0.02% (50:1, V
S
=
±
7.5V, V
IN
= 2V
RMS
)
I
Operates with a Single 5V Supply (1V
RMS
Input
Range)
I
60
μ
V
RMS
Clock Feedthrough (Single 5V Supply)
I
Operates up to
±
8V Supplies
I
TTL/CMOS-Compatible Clock Input
I
No External Components
The LTC
1164-5 is a monolithic 8th order filter; it approxi-
mates either a Butterworth or a Bessel lowpass response.
The LTC1164-5 features clock-tunable cutoff frequency
and low power consumption (4.5mA with
±
5V supplies
and 2.5mA with single 5V supply).
Low power operation is achieved without compromising
noise or distortion performance. With
±
5V supplies and
10kHz cutoff frequency, the operating signal-to-noise
ratio is 86dB and the THD throughout the passband is
0.015%. Under the same conditions, a 77dB signal-to-
noise ratio and distortion is obtained with a single 5V
supply while the clock feedthrough is kept below the noise
level. The maximum signal-to-noise ratio is 92dB.
The LTC1164-5 approximates an 8th order Butterworth
response with a clock-to-cutoff frequency ratio of 100:1
(Pin 10 to V
–
) or 50:1 double-sampled (Pin 10 to V
+
and
Pin 1 shorted to Pin 13). Double-sampling allows the input
signal frequency to reach the clock frequency before any
aliasing occurrence. An 8th order Bessel response can
also be approximated with a clock-to-cutoff frequency
ratio of 140:1 (Pin 10 to ground). With
±
7.5V supply,
±
5V
supply and single 5V supply, the maximum clock fre-
quency of the LTC1164-5 is 1.5MHz, 1MHz, and 1MHz
respectively. The LTC1164-5 is pin-compatible with the
LTC1064-2 and LTC-1064-3.
Frequency Response
1
2
3
4
5
6
7
14
13
12
11
10
9
8
LTC1164-5
V
IN
8V
NC
–8V
CLK = 1MHz
TO V
+
V
OUT
WIDEBAND NOISE = 110
μ
V
THD IN PASSBAND < 0.02% AT V
IN
= 2V
RMS
NOTE: THE CONNECTION FROM PIN 7 TO PIN 14
SHOULD BE MADE UNDER THE PACKAGE.
FOR 50:1 OPERATION CONNECT PIN 1 TO PIN 13
AS SHOWN. FOR 100:1 OR 150:1 OPERATION PINS 1
AND 13 SHOULD FLOAT. THE POWER SUPPLIES
SHOULD BE BYPASSED BY A 0.1
μ
F CAPACITOR AS
CLOSE TO THE PACKAGE AS POSSIBLE.
1164-5 TA01
FREQUENCY (kHz)
1
G
0
–10
–20
–30
–40
–50
–60
–70
–80
10
100
LTC1164-5 TA02
I
Anti-Aliasing Filters
I
Battery-Operated Instruments
I
Telecommunications Filters
I
Smoothing Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
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