Datasheet Linear Technology LTC1068-25CG#PBF

Manufacturer	Linear Technology
Series	LTC1068-25
Part Number	LTC1068-25CG#PBF

Clock-Tunable, Quad Second Order, Filter Building Blocks

Datasheets

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PDF, 392 Kb, Revision: C, File uploaded: Aug 10, 2017

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Prices

Packaging

Package	SSOP-28
Package Code	G
Package Index	05-08-1640 (G28)

Parametrics

Clock Tunable	yes
Demo Boards	DC104B-A,DC104B-B,DC104B-C,DC104B-D
Design Tools	LTspice File
Export Control	no
Filter Order	8 order
Filters Per Package	4
Fo Max	50 kHz
Fo Min	1 kHz
Fo/Fclk	25:1
Isupply	3.5 mA
Operating Temperature Range	0 to 70 °C
Preconfigured	Universal
Vs Max	11 V
Vs Min	3.14 V

Eco Plan

RoHS

Compliant

Other Options

LTC1068 LTC1068-200 LTC1068-50

Articles

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Clock-Tunable, High Accuracy, Quad 2nd Order, Analog Filter Building Blocks &mdash LT Journal
PDF, 239 Kb, File published: Aug 1, 1998
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DESIGN FEATURES Clock-Tunable, High Accuracy,
Quad 2nd Order, Analog Filter
Building Blocks
by Philip Karantzalis
LTC1068-200 Ultralow
The LTC1068 product family consists ware for Windows . The internal sam-Frequency Linear-Phase
of four monolithic, clock-tunable filter pling rate of all the LTC1068 devices Lowpass Filter
Introduction В® is twice the clock frequency. This
allows the frequency of input signals
to approach twice the clock frequency
before aliasing occurs. Maximum
clock frequency for LTC1068-200,
LTC1068 and LTC1068-25 is 6MHz
with В±5V supplies; that for the
LTC1068-50 is 2MHz with a single 5V
supply. For low power filter applications, the LTC1068-50 power supply
current is 4.5mA with a single 5V
supply and 2.5mA with a single 3V
supply. The LTC1068 products are
available in a 28-pin SSOP surface
mount package. The LTC1068 (the
100:1 part) is also available in a 24pin DIP package. The following four
circuits are typical examples of …
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High Clock-to-Center Frequency Ratio LTC1068-200 Extends Capabilities of Switched Capacitor Highpass Filter &mdash LT Journal
PDF, 214 Kb, File published: Feb 1, 1998
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DESIGN IDEAS High Clock-to-Center Frequency Ratio
LTC1068-200 Extends Capabilities
of Switched Capacitor Highpass Filter
by Frank Cox continued on page 33 вЂ“10dB 10dB/DIV input signal too much you will also
limit the passband of the filter, and
hence its usefulness.
What makes this filter different is
the 200:1 clock-to-center frequency
ratio (CCFR) and the internal sampling scheme of the LTC1068-200.
Figure 2a shows the amplitude
response of the filter plotted against
frequency from 100Hz to 10kHz. For
comparison, Figure 2b shows the
same filter built with an LTC1068-25.
This is a 25:1 CCFR part. The 200:1
CCFR filter delivers almost 30dB more
ultimate attenuation in the stopband.
A standard amplitude vs frequency
plot of a highpass filter can be misleading because it masks some of the
aforementioned spurious signals
introduced into the passband. Figure
3a is a spectrum plot of the 200:1
filter with a single 10kHz tone on the …

Model Line

Series: LTC1068-25 (4)

LTC1068-25CG#PBF LTC1068-25CG#TRPBF LTC1068-25IG#PBF LTC1068-25IG#TRPBF

Manufacturer's Classification

Signal Conditioning > Filters > Filter Building Blocks

Other Names:

LTC1068-25CGPBF, LTC1068-25CG PBF, LTC106825CG#PBF, LTC1068 25CG#PBF