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LTC1563-2 Datasheet

Active RC/ 4th Order Lowpass Filter Family

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LTC1563-2 pdf
LTC1563-2/LTC1563-3
Active RC, 4th Order
Lowpass Filter Family
FEATURES
Extremely Easy to Use—A Single Resistor Value
Sets the Cutoff Frequency (256Hz < fC < 256kHz)
Extremely Flexible—Different Resistor Values
Allow Arbitrary Transfer Functions with or without
Gain (256Hz < fC < 256kHz)
Supports Cutoff Frequencies Up to 360kHz Using
FilterCADTM
LTC1563-2: Unity-Gain Butterworth Response Uses a
Single Resistor Value, Different Resistor Values
Allow Other Responses with or without Gain
LTC1563-3: Unity-Gain Bessel Response Uses a
Single Resistor Value, Different Resistor Values
Allow Other Responses with or without Gain
Rail-to-Rail Input and Output Voltages
Operates from a Single 3V (2.7V Min) to ±5V Supply
Low Noise: 36µVRMS for fC = 25.6kHz, 60µVRMS for
fC = 256kHz
fC Accuracy < ±2% (Typ)
DC Offset < 1mV
Cascadable to Form 8th Order Lowpass Filters
Available in NarroUw SSOP-16 Package
APPLICATIO S
Discrete RC Active Filter Replacement
Antialiasing Filters
Smoothing or Reconstruction Filters
Linear Phase Filtering for Data Communication
Phase Locked Loops
DESCRIPTIO
The LTC®1563-2/LTC1563-3 are a family of extremely
easy-to-use, active RC lowpass filters with rail-to-rail
inputs and outputs and low DC offset suitable for systems
with a resolution of up to 16 bits. The LTC1563-2, with a
single resistor value, gives a unity-gain Butterworth
response. The LTC1563-3, with a single resistor value,
gives a unity-gain Bessel response. The proprietary
architecture of these parts allows for a simple resistor
calculation:
R = 10k (256kHz/fC); fC = Cutoff Frequency
where fC is the desired cutoff frequency. For many appli-
cations, this formula is all that is needed to design a filter.
By simply utilizing different valued resistors, gain and
other responses are achieved.
The LTC1563-X features a low power mode, for the lower
frequency applications, where the supply current is re-
duced by an order of magnitude and a near zero power
shutdown mode.
The LTC1563-Xs are available in the narrow SSOP-16
package (Same footprint as an SO-8 package).
, LTC and LT are registered trademarks of Linear Technology Corporation.
FilterCAD is trademark of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
Single 3.3V, 256Hz to 256kHz Butterworth Lowpass Filter
3.3V
0.1µF
R
R
R
VIN
0.1µF
LTC1563-2
1
LP
2
SA
V+ 16
15
LPB
3
NC
4
INVA
5
NC
14
NC
13
INVB
12
NC
6
LPA
7
AGND
8 V
11
SB
10
NC
9
EN
( )fC = 256kHz
10k
R
VOUT
R
R
R
1563 TA01
Frequency Response
10
0
–10
–20
–30
–40
–50
–60
–70
–80
100
R = 10k
fC = 256kHz
R = 10M
fC = 256Hz
1k 10k 100k
FREQUENCY (Hz)
1M
1563 TA02
156323fa
1


Linear Technology Electronic Components Datasheet

LTC1563-2 Datasheet

Active RC/ 4th Order Lowpass Filter Family

No Preview Available !

LTC1563-2 pdf
LTC1563-2/LTC1563-3
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Total Supply Voltage (V+ to V) ............................... 11V
Maximum Input Voltage at
Any Pin ....................... (V– 0.3V) VPIN (V+ + 0.3V)
Power Dissipation .............................................. 500mW
Operating Temperature Range
LTC1563C ............................................... 0°C to 70°C
LTC1563I ............................................ – 40°C to 85°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
PACKAGE/ORDER INFORMATION
LP 1
SA 2
NC 3
INVA 4
NC 5
LPA 6
AGND 7
V8
TOP VIEW
16 V+
15 LPB
14 NC
13 INVB
12 NC
11 SB
10 NC
9 EN
ORDER PART
NUMBER
LTC1563-2CGN
LTC1563-3CGN
LTC1563-2IGN
LTC1563-3IGN
GN PART
MARKING
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 135°C/ W
NOTE: PINS LABELED NC ARE NOT CONNECTED
INTERNALLY AND SHOULD BE CONNECTED TO THE
SYSTEM GROUND
15632
15633
15632I
15633I
Order Options Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking: http://www.linear.com/leadfree/
Consult LTC Marketing for Military grade parts.
ELECTRICAL CHARACTERISTICS
The denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.
VS = Single 4.75V, EN pin to logic “low,” Gain = 1, RFIL = R11 = R21 = R31 = R12 = R22 = R32, specifications apply to both the high
speed (HS) and low power (LP) modes unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Specifications for Both LTC1563-2 and LTC1563-3
Total Supply Voltage (VS), HS Mode
Total Supply Voltage (VS), LP Mode
Output Voltage Swing High (LPB Pin)
HS Mode
Output Voltage Swing Low (LPB Pin)
HS Mode
Output Swing High (LPB Pin)
LP Mode
Output Swing Low (LPB Pin)
LP Mode
DC Offset Voltage, HS Mode
(Section A Only)
DC Offset Voltage, LP Mode
(Section A Only)
DC Offset Voltage, HS Mode
(Input to Output, Sections A, B Cascaded)
VS = 3V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 4.75V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = ±5V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 3V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 4.75V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = ±5V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 2.7V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 4.75V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = ±5V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 2.7V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 4.75V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = ±5V, fC = 25.6kHz, RFIL = 100k, RL = 10k to GND
VS = 3V, fC = 25.6kHz, RFIL = 100k
VS = 4.75V, fC = 25.6kHz, RFIL = 100k
VS = ±5V, fC = 25.6kHz, RFIL = 100k
VS = 2.7V, fC = 25.6kHz, RFIL = 100k
VS = 4.75V, fC = 25.6kHz, RFIL = 100k
VS = ±5V, fC = 25.6kHz, RFIL = 100k
VS = 3V, fC = 25.6kHz, RFIL = 100k
VS = 4.75V, fC = 25.6kHz, RFIL = 100k
VS = ±5V, fC = 25.6kHz, RFIL = 100k
3
2.7
2.9
4.55
4.8
2.6
4.55
4.8
2.95
4.7
4.9
0.015
0.02
– 4.95
2.65
4.65
4.9
0.01
0.015
– 4.95
±1.5
±1.0
±1.5
±2
±2
±2
±1.5
±1.0
±1.5
11
11
0.05
0.05
– 4.9
0.05
0.05
– 4.9
±3
±3
±3
±6
±6
±7
±3
±3
±3
V
V
V
V
V
V
V
V
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
156323fa
2


Part Number LTC1563-2
Description Active RC/ 4th Order Lowpass Filter Family
Maker Linear Technology
Total Page 20 Pages
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LTC1563-2 pdf
LTC1563-2 Datasheet PDF
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