|
|
PDF LTC1164-8 Data sheet ( Hoja de datos )
| Número de pieza | LTC1164-8 | |
| Descripción | Ultraselective/ Low Power 8th Order Elliptic Bandpass Filter with Adjustable Gain | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LTC1164-8 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
|
No Preview Available !
LTC1164-8
Ultraselective, Low Power
8th Order Elliptic Bandpass Filter
with Adjustable Gain
FEATURES
s Ultraselectivity
(50dB Attenuation at ±4% of Center Frequency)
s Adjustable Passband Gain
s Noise Independent of Gain
s Filter Noise: 270µVRMS, VS = Single 5V Supply
s Clock-Tunable (Center Frequency = fCLK/100)
s Center Frequencies up to 5kHz, VS = ±5V
(Typical ISUPPLY = 3.2mA)
s Center Frequencies up to 4kHz, VS = Single 5V Supply
(Typical ISUPPLY = 2.3mA)
U
APPLICATIONS
s Asynchronous Narrowband Signal Detectors
s Low Frequency Asynchronous Demodulators
s Handheld Spectrum Analyzers
s In-Band Tone Signaling Detectors
DESCRIPTION
The LTC®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 – 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 • center frequency and greater than 1.04 • center
frequency, respectively.
The LTC1164-8 requires an external op amp and two
external resistors (see the circuit below). The filter’s gain
at center frequency is set by the ratio RIN/RF. For a gain
equal to one and an optimum dynamic range, RF should be
set to 61.9k and RIN should be 340k. For gains other than
one, RIN = 340k/Gain. Gains up to 1000 are obtainable.
Setting the filter’s gain with input resistor RIN does not
increase the filter’s wideband noise. The 270µVRMS
wideband noise of the LTC1164-8 is independent of the
filter’s 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.
TYPICAL APPLICATION
Ultranarrow 1kHz Bandpass Filter with Gain = 10
Gain = 340k/RIN, 1/(2π • RF • CF) ≥ 10 • Center Frequency
RIN
34k
VIN
5V
1 14
2 13
3 12
4 LTC1164-8 11
5 10
69
78
–5V
100kHz
SHORT CONNECTION UNDER IC AND
SHIELDED BY A GROUND PLANE
CF
200pF
RF
61.9k
5V
2– 7
LT®1006
3+ 4
–5V
6 VOUT
LTC1164-8 • TA01
Frequency Response
30
20
10
0
–10
–20
–30
–40
–50
–60
–70
0.90
50dB
0.95 1.00 1.05
FREQUENCY (kHz)
1.10 1.15
1164-8 TA02
1
1 page  
LTC1164-8
PIN FUNCTIONS (14-Lead PDIP)
V +, V – (Pins 4, 12): Power Supply Pins. The V + (Pin 4)
and the V – (Pin 12) should be bypassed with a 0.1µF
capacitor to a reliable ground plane. The filter’s power
supplies should be isolated from other digital or high
voltage analog supplies. A low noise linear supply is
recommended. Using a switching power supply will
lower the signal-to-noise ratio of the filter. The power
supply during power-up should have a slew rate of less
than 1V/µs.
For dual supply operation if the V + supply is applied before
the V – supply or the V – supply is applied before the V +
supply, a signal diode on each supply pin to ground will
prevent latchup. Figures 1 and 2 show typical connections
for dual and single supply operation.
fCLK (Pin 11): Clock Input Pin. Any TTL or CMOS clock
source with a square wave output and 50% duty cycle
(±10%) is an adequate clock source for the device. The
power supply for the clock source should not be the filter’s
power supply. The analog ground for the filter should be
connected to the clock’s ground at a single point only.
Table 1 shows the clock’s low and high level threshold
values for dual or single supply operation. A pulse genera-
tor can be used as a clock source provided the high level
on-time is at least 1µs. Sine waves are not recommended
for clock input frequencies less than 100kHz. The clock’s
rise or fall time should be equal to or less than 1µs.
Table 1. Clock Source High and Low Threshold Levels
POWER SUPPLY
HIGH LEVEL
LOW LEVEL
Single Supply = 5V
> 1.45V
< 0.5V
Single Supply = 12V
> 7.80V
< 6.5V
Dual Supply = ±2.5V
> 0.73V
<– 2.0V
Dual Supply = ±5V
> 1.45V
< 0.5V
Dual Supply = ±7.5V
> 2.18V
< 0.5V
5V
*1N4148
OR EQUIVALENT
RIN
340k
VIN
0.1µF
1 14
2 13
3 12
4 LTC1164-8 11
5 10
69
78
RF
61.9k
– 5V
fCLK
0.1µF
1N4148*
OR EQUIVALENT
2–
*FOR SURFACE MOUNT CIRCUITS
USE MOTOROLA DIODE MBR0530
OR EQUIVALENT
3+
5V
7
4
0.1µF
6 VOUT
LTC1164-8 • F01
0.1µF
Figure 1. Dual Power Supply Operation (Gain = 1) –5V
RIN
340k
VIN
5V
15k
+
1µF 10k
0.1µF
1 14
2 13
3 12
4 LTC1164-8 11
5 10
69
78
RF
61.9k
5V
fCLK
2–
7
3+
4
0.1µF
6
VOUT
LTC1164-8 • F02
Figure 2. Single Power Supply Operation (Gain = 1)
5
5 Page 
LTC1164-8
PACKAGE DESCRIPTION Dimensions in inches (millimeters) unless otherwise noted.
SW Package
16-Lead Plastic Small Outline (Wide 0.300)
(LTC DWG # 05-08-1620)
0.398 – 0.413
(10.109 – 10.490)
(NOTE 2)
16 15 14 13 12 11 10
9
NOTE 1
0.394 – 0.419
(10.007 – 10.643)
0.005
(0.127)
RAD MIN
0.291 – 0.299
(7.391 – 7.595)
(NOTE 2)
0.010
(0.254
–
–
0.029
0.737)
×
45°
123 45678
0.093 – 0.104
(2.362 – 2.642)
0.037 – 0.045
(0.940 – 1.143)
0° – 8° TYP
0.050
0.009 – 0.013
(0.229 – 0.330)
NOTE:
NOTE 1
0.016 – 0.050
(0.406 – 1.270)
(1.270)
TYP 0.014 – 0.019
(0.356 – 0.482)
TYP
1. PIN 1 IDENT, NOTCH ON TOP AND CAVITIES ON THE BOTTOM OF PACKAGES ARE THE MANUFACTURING OPTIONS.
THE PART MAY BE SUPPLIED WITH OR WITHOUT ANY OF THE OPTIONS.
2. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
0.004 – 0.012
(0.102 – 0.305)
SOL16 0392
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 LTC1164-8.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LTC1164-5 | Low Power 8th Order Pin Selectable Butterworth or Bessel Lowpass Filter | Linear Technology |
| LTC1164-6 | Low Power 8th Order Pin Selectable Elliptic or Linear Phase Lowpass Filter | Linear Technology |
| LTC1164-7 | Low Power/ Linear Phase 8th Order Lowpass Filter | Linear Technology |
| LTC1164-8 | Ultraselective/ Low Power 8th Order Elliptic Bandpass Filter with Adjustable Gain | Linear Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |