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PDF LTC1164-5 Data sheet ( Hoja de datos )
| Número de pieza | LTC1164-5 | |
| Descripción | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
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FEATURES
s Pin Selectable Butterworth or Bessel Response
s 4mA Supply Current with ±5V Supplies
s fCUTOFF up to 20kHz
s 100µVRMS Wideband Noise
s THD < 0.02% (50:1, VS = ±7.5V, VIN = 2VRMS)
s Operates with a Single 5V Supply (1VRMS Input
Range)
s 60µVRMS Clock Feedthrough (Single 5V Supply)
s Operates up to ±8V Supplies
s TTL/CMOS-Compatible Clock Input
s No External Components
U
APPLICATIO S
s Anti-Aliasing Filters
s Battery-Operated Instruments
s Telecommunications Filters
s Smoothing Filters
LTC1164-5
Low Power 8th Order
Pin Selectable Butterworth
or Bessel Lowpass Filter
DESCRIPTIO
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Butterworth 20kHz Anti-Aliasing Filter
1 14
VIN 2
13
3 12 –8V WIDEBAND NOISE = 110µVRMS
8V
4 LTC1164-5 11
5 10
CLK = 1MHz THD IN PASSBAND < 0.02% AT VIN = 2VRMS
NOTE: THE CONNECTION FROM PIN 7 TO PIN 14
TO V+
SHOULD BE MADE UNDER THE PACKAGE.
NC 6
7
9
VOUT
FOR 50:1 OPERATION CONNECT PIN 1 TO PIN 13
AS SHOWN. FOR 100:1 OR 150:1 OPERATION PINS 1
8 AND 13 SHOULD FLOAT. THE POWER SUPPLIES
SHOULD BE BYPASSED BY A 0.1µF CAPACITOR AS
1164-5 TA01
CLOSE TO THE PACKAGE AS POSSIBLE.
0
–10
– 20
– 30
– 40
– 50
– 60
– 70
– 80
1
Frequency Response
10
FREQUENCY (kHz)
100
LTC1164-5 TA02
1
1 page  
LTC1164-5
TYPICAL PERFOR A CE CHARACTERISTICS
Passband vs Frequency and fCLK
0.5
0
– 0.5
–1.0
–1.5
– 2.0
– 2.5
A. fCLK = 150kHz
fCUTOFF = 1.07kHz
B. fCLK = 450kHz
fCUTOFF = 3.21kHz
C. fCLK = 750kHz
fCUTOFF = 5.36kHz
D. fCLK = 1MHz
fCUTOFF= 7.14kHz
E. fCLK = 1.5MHz
A
B CD E
fCUTOFF = 10.71kHz
– 3.0 VS = ±7.5V, 140:1
– 3.5 (BESSEL RESPONSE)
TA = 25°C
– 4.0
0.1 1
FREQUENCY (kHz)
10
LTC1164-5 • G09
Maximum Passband over
Temperature for VS = ±5V, 50:1
0.5
TA = 70°C
0
TA = –40°C
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0 VS = ±5V
–3.5 fCLK = 1MHz
fCUTOFF = 20kHz
–4.0
1
FREQUENCY (kHz)
10
20
LTC1164-5 • G011
Maximum Passband over
Temperature for VS = ±5V, 100:1
0.5 TA = 70°C
0
TA = –40°C
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0 VS = ±5V
–3.5 fCLK = 1MHz (100:1)
fCUTOFF = 10kHz
–4.0
0.5 1
FREQUENCY (kHz)
10
LTC1164-5 • G13
Passband vs Frequency and fCLK
0.5
0
–0.5
–1.0
–1.5
A. fCLK = 250kHz
fCUTOFF = 5kHz
B. fCLK = 500kHz
A B CD
fCUTOFF = 10kHz
C. fCLK = 750kHz
fCUTOFF = 15kHz
D. fCLK = 1MHz
fCUTOFF = 20kHz
–2.0
–2.5
–3.0 VS = ±5V
–3.5 50:1
TA = 25°C
–4.0
1
10
FREQUENCY (kHz)
20
LTC1164-5 • G10
Passband vs Frequency and fCLK
A. fCLK = 200kHz
0.5 fCUTOFF = 2kHz
0
B. fCLK = 300kHz
fCUTOFF = 3kHz
–0.5 A B C D E C. fCLK = 500kHz
–1.0
fCUTOFF = 5kHz
D. fCLK = 750kHz
–1.5 fCUTOFF = 7.5kHz
–2.0
E. fCLK = 1MHz
fCUTOFF = 10kHz
–2.5
–3.0 VS = ±5V
–3.5 100:1
TA = 25°C
–4.0
0.1
1
FREQUENCY (kHz)
10
LTC1164-5 • G12
Passband vs Frequency and fCLK
0.5
0
–0.5 A B C D
–1.0
–1.5
A. fCLK = 250kHz
fCUTOFF = 5kHz
B. fCLK = 500kHz
fCUTOFF = 10kHz
C. fCLK = 750kHz
fCUTOFF = 15kHz
D. fCLK = 1MHz
fCUTOFF = 20kHz
–2.0
–2.5
–3.0 VS = SINGLE 5V
–3.5 50:1
TA = 25°C
–4.0
1
FREQUENCY (kHz)
10
20
LTC1164-5 • G14
5
5 Page 
LTC1164-5
TYPICAL APPLICATIO S
Single 5V, IS = 5.2mA, 16th Order Clock-Tunable Lowpass Filter,
fCLK/fCUTOFF = 60:1, –75dB Attenuation at 2.3 fCUTOFF
1 14
VIN 2
3
LTC1164-5
13
12
5V
0.1µF 15k
+
1µF
10k
4 IC1 11
5 10
69
78
5V
5V 0.1µF
1 14
2 LTC1164-5 13
3 12
4 IC2 11
5 10
69
78
1k
fCLK
5V
VOUT
1164-5 F04
Gain vs Frequency
10
0
–10
– 20
– 30
– 40
– 50
– 60
–70 VS = SINGLE 5V
– 80
fCLK = 600kHz
fCUTOFF = 10kHz
– 90
1
10
FREQUENCY (kHz)
30
LTC1164-5 • TA03
THD + Noise vs Frequency
–40
–45
VS = SINGLE 5V
VIN = 0.5VRMS
–50 fCLK = 600kHz
–55 fC = 10kHz
–60
–65
–70
–75
–80
–85
–90
1
5
FREQUENCY (kHz)
10
LTC1164-5 • TA04
PACKAGE DESCRIPTIO Dimensions in inches (millimeters) unless otherwise noted.
J Package
14-Lead CERDIP (Narrow 0.300, Hermetic)
(LTC DWG # 05-08-1110)
CORNER LEADS OPTION
(4 PLCS)
0.005
(0.127)
MIN
0.840
(21.336)
MAX
16 15 14 13 12 11 10 9
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
0.025
(0.635)
RAD TYP
12 3 4 5 6 78
0.300 BSC
(0.762 BSC)
0.015 – 0.060
(0.380 – 1.520)
0.220 – 0.310
(5.588 – 7.874)
0.200
(5.080)
MAX
0.008 – 0.018
(0.203 – 0.457)
0° – 15°
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE
OR TIN PLATE LEADS
0.125
(3.175)
MIN
0.045 – 0.068
(1.143 – 1.727)
0.014 – 0.026
(0.360 – 0.660)
0.100 ± 0.010
(2.540 ± 0.254)
J16 1197
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet LTC1164-5.PDF ] | |
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