LTC1060
Universal Dual Filter
Building Block
FEATURES
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DESCRIPTIO
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Guaranteed
Filter Specification for
±2.37V
and
±5V
Supply
Operates Up to 30kHz
Low Power and 88dB Dynamic Range at
±2.5V
Supply
Center Frequency Q Product Up to 1.6MHz
Guaranteed
Offset Voltages
Guaranteed
Clock-to-Center Frequency Accuracy Over
Temperature:
0.3% for LTC1060A
0.8% for LTC1060
Guaranteed
Q Accuracy Over Temperature
Low Temperature Coefficient of Q and Center
Frequency
Low Crosstalk, 70dB
Clock Inputs TTL and CMOS Compatible
The LTC
®
1060 consists of two high performance, switched
capacitor filters. Each filter, together with 2 to 5 resistors,
can produce various 2nd order filter functions such as
lowpass, bandpass, highpass notch and allpass. The
center frequency of these functions can be tuned by an
external clock or by an external clock and resistor ratio. Up
to 4th order full biquadratic functions can be achieved by
cascading the two filter blocks. Any of the classical filter
configurations (like Butterworth, Chebyshev, Bessel, Cauer)
can be formed.
The LTC1060 operates with either a single or dual supply
from
±2.37V
to
±8V.
When used with low supply
(i.e. single 5V supply), the filter typically consumes 12mW
and can operate with center frequencies up to 10kHz. With
±5V
supply, the frequency range extends to 30kHz and
very high Q values can also be obtained.
The LTC1060 is manufactured by using Linear
Technology’s enhanced LTCMOS™ silicon gate process.
Because of this, low offsets, high dynamic range, high
center frequency Q product and excellent temperature
stability are obtained.
The LTC1060 is pinout compatible with MF10.
, LTC and LT are registered trademarks of Linear Technology Corporation.
LTCMOS trademark of Linear Technology Corporation.
APPLICATIO S
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Single 5V Supply Medium Frequency Filters
Very High Q and High Dynamic Range Bandpass,
Notch Filters
Tracking Filters
Telecom Filters
TYPICAL APPLICATIO
3.16k
1
100k
V
IN
1mV(RMS)
3.16k
2k
2
3
4
5
6
5V
7
8
9
10
CLOCK IN
17.5kHz
Single 5V, Gain of 1000 4th Order Bandpass Filter
70
20
19
18
17
16
LTC1060
15
14
13
12
11
1k
1k
100k
2k
5V
0.1µF
GAIN (dB)
OUTPUT
Amplitude Response
60
50
40
30
20
10
0
–10
0
100 125 150 175 200 225 250 275
INPUT FREQUENCY (Hz)
LTC1060 • TA02
LTC1060 • TA01
U
1060fb
U
U
1
LINER [ LINEAR TECHNOLOGY ]
