LTC1565-31CS8 Linear Technology, LTC1565-31CS8 Datasheet

IC FILTR 7TH ORDER 650KHZ 8-SOIC

LTC1565-31CS8

Manufacturer Part Number
LTC1565-31CS8
Description
IC FILTR 7TH ORDER 650KHZ 8-SOIC
Manufacturer
Linear Technology
Datasheet

Specifications of LTC1565-31CS8

Filter Type
Linear Phase, Continuous-Time Lowpass
Frequency - Cutoff Or Center
650kHz
Number Of Filters
1
Max-order
7th
Voltage - Supply
4.75 V ~ 11 V, ±4.75 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Dual Supply Voltage (typ)
±3/±5V
Power Supply Requirement
Single/Dual
Single Supply Voltage (min)
4.75V
Dual Supply Voltage (min)
±2.375V
Operating Temperature (min)
0C
Operating Temperature (max)
70C
Operating Temperature Classification
Commercial
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LTC1565-31CS8
Manufacturer:
LT
Quantity:
10 000
Part Number:
LTC1565-31CS8
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1565-31CS8#PBF
Manufacturer:
LTC
Quantity:
686
Part Number:
LTC1565-31CS8#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
Part Number:
LTC1565-31CS8#TR
Manufacturer:
LT/凌特
Quantity:
20 000
FEATURES
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APPLICATIONS
TYPICAL APPLICATION
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7th Order, 650kHz Linear Phase Filter in an SO-8
Differential Inputs and Outputs
Operates on a Single 5V or a ±5V Supply
Low Offset: 5mV Typical
75dB THD and SNR
78dB SNR
Shutdown Mode
Requires No External Components
Requires No External Clock Signal
CDMA Basestations
Data Communications
Antialiasing Filters
Smoothing or Reconstruction Filters
Matched Filter Pairs
Replacement for LC Filters
Single 5V Supply, Differential 650kHz Lowpass Filter
0.1μF
V
V
IN
IN
+
1
2
3
4
+IN
–IN
GND
V
LTC1565-31
SHDN
+OUT
–OUT
V
+
8
7
6
5
V
V
5V
OUT
OUT
15645-31 TA01
+
0.1μF
5V
Linear Phase Lowpass Filter
DESCRIPTION
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
The LTC
phase lowpass fi lter. The selectivity of the LTC1565-31,
combined with its linear phase and dynamic range, make
it suitable for fi ltering in data communications or data
acquisition systems. The fi lter attenuation is 36dB at
2× f
f
achieves this selectivity with a linear phase response in
the passband.
With 5% accuracy of the cutoff frequency, the LTC1565-31
can be used in applications requiring pairs of matched
fi lters, such as transceiver I and Q channels. Furthermore,
the differential inputs and outputs provide a simple inter-
face for these wireless systems.
With a single 5V supply and a 2V
features an impressive spurious free dynamic range of
75dB. The maximum signal-to-noise ratio is 78dB and it
is achieved with a 2.5V
The LTC1565-31 features a shutdown mode where power
supply current is typically less than 10μA.
For W-CDMA, 3G, CDMA 2000 and other cellular and
noncellular cutoff frequencies or single-ended I/O, please
contact LTC Marketing for additional information.
CUTOFF
650kHz Continuous Time,
CUTOFF
. Unlike comparable LC fi lters, the LTC1565-31
®
–100
1565-31 is a 7th order, continuous time, linear
–10
–20
–30
–40
–50
–60
–70
–80
–90
10
0
and at least 72dB for frequencies above 3×
10
4
Frequency Response
10
FREQUENCY (Hz)
P-P
DELAY
5
GAIN
input signal.
P-P
10
LTC1565-31
6
input, the LTC1565-31
1565 G01
10
7
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
0.9
156531fa
1

Related parts for LTC1565-31CS8

LTC1565-31CS8 Summary of contents

Page 1

... Linear Phase Lowpass Filter DESCRIPTION The LTC ® phase lowpass fi lter. The selectivity of the LTC1565-31, combined with its linear phase and dynamic range, make it suitable for fi ltering in data communications or data acquisition systems. The fi lter attenuation is 36dB at 2× f ...

Page 2

... ABSOLUTE MAXIMUM RATINGS (Note 1) Total Supply Voltage ............................................... 11V Power Dissipation .............................................. 500mW Operating Temperature Range LTC1565-31CS8 ...................................... 0°C to 70°C LTC1565-31IS8 ................................... – 40°C to 85°C Storage Temperature Range ................. –65°C to 150°C Lead Temperature (Soldering, 10 sec) ................ 300°C ORDER INFORMATION LEAD FREE FINISH ...

Page 3

... G01 LTC1565-31 MIN TYP MAX 0.1 0.3 0.6 ±10 75 145 3 ±5 ±12 ±5 ±12 –400 –400 l 2.49 2.51 2.52 l 4 ...

Page 4

... LTC1565-31 TYPICAL PERFORMANCE CHARACTERISTICS Passband Gain vs Frequency Over Temperature 0 0.4 0.3 0.2 –40°C 0.1 85°C 0 25°C –0.1 –0.2 –0.3 –0.4 –0.5 25k 100k 400k FREQUENCY (Hz) 1565 G03 Common Mode Rejection Ratio 110 P 25°C 100 FREQUENCY (Hz) 1565 G06 PIN FUNCTIONS +IN, – ...

Page 5

... LTC1565-31 goes into the current saving shutdown mode. Pin 5 has a 4μA pull-up current. Leaving Pin 5 open will place the LTC1565-31 in its normal operating mode. – OUT, +OUT (Pins 7, 8): Output Pins. Pins 7 and 8 are the fi lter differential output. Each pin can drive 1kΩ or 300pF loads ...

Page 6

... LTC1565-31 APPLICATIONS INFORMATION Interfacing to the LTC1565-31 The difference between the voltages at Pin 1 and Pin 2 is the “differential input voltage.” The average of the voltages at Pin 1 and Pin 2 is the “common mode input voltage.” The difference between the voltages at Pin 7 and Pin 8 is the “ ...

Page 7

... THD versus output common mode voltage for a 2V mode input voltage that is 0.5V below mid supply. Figure 7. THD vs Common Mode Output Voltage 3.0 3.5 ) P-P 1565-31 F06 Figure 8. THD vs Common Mode Output Voltage LTC1565-31 differential input voltage and a common P 100kHz IN P-P V ...

Page 8

... SOURCE TO PROVIDE THE INPUT DC COMMON MODE VOLTAGE 0.1μF AMPLIFIERS A4 AND A5 ALLOW MONITORING/MEASURING THE DIFFERENTIAL OUTPUT WITH A SINGLE-ENDED, 6 GROUND-REFERENCED INSTRUMENT 0.1μ +IN +OUT 6 – –IN –OUT LTC1565- GND V 0.1μ – SHDN V 0.1μ TOTAL INTEGRATED NOISE 104μV RMS 118μV RMS = 650kHz CUTOFF TOTAL INTEGRATED NOISE • ...

Page 9

... LTC1565- GND 0.1μF 2.49k 4 5 – SHDN V NOTE: FOR SINGLE 5V SUPPLY CONNECTION, PIN 4 (LTC1565-31) AND PIN 4 (LT1809) SHOULD BE GROUNDED AND RESISTOR R2 SHOULD BE DC BIASED AT APPROXIMATELY 2.5V (SEE TEST CIRCUIT FOR SINGLE SUPPLY OPERATION +IN +OUT – –IN –OUT ...

Page 10

... DATA –IN 4.99k LTC1565-31 3 GND 0.1μF 4 – V Simple Pulse Shaping Circuit for Single 5V Operation, 2Mbps (1Msps) 4 Level Data 5V 4.99k 4.99k D1 1Msps 1 +IN DATA 10k 2 D0 –IN 4.99k LTC1565-31 3 GND 0.1μF 4 – +OUT OUT 7 – V –OUT OUT 0.1μF SHDN ...

Page 11

... TYP .016 – .050 .014 – .019 (0.406 – 1.270) (0.355 – 0.483) TYP INCHES (MILLIMETERS) LTC1565-31 ADC I DSP Q ADC 1565-31 TA03 .189 – .197 (4.801 – 5.004) NOTE ...

Page 12

... Frequency Response 0 –6 –12 –18 –24 –30 –36 –42 –48 100k 1M FREQUENCY (Hz) 1565 TA12 www.linear.com ● +IN +OUT OUT1 –IN –OUT OUT2 U2 LTC1565-31 FGND GND 0.1μF – SHDN 0.1μF V 15645-31 TA11 5V COMMENTS f = 500kHz or 1MHz CUTOFF f = 150kHz (LTC1562), CUTOFF(MAX 300kHz (LTC1562-2) CUTOFF(MAX) f ...

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