1

LTC1060

1060fb

Universal Dual Filter

Building Block

DESCRIPTIO

APPLICATIO S

■

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

■

Single 5V Supply Medium Frequency Filters

■

Very High Q and High Dynamic Range Bandpass,

Notch Filters

■

Tracking Filters

■

Telecom Filters

Single 5V, Gain of 1000 4th Order Bandpass Filter

The LTC

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.

FEATURES

TYPICAL APPLICATIO

Amplitude Response

LTC1060 • TA01

1mV(RMS)

0.1µF

3.16k

3.16k

100k

2k

100k

LTC1060

2k

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

5V

5V

OUTPUT

1k

1k

CLOCK IN

17.5kHz

INPUT FREQUENCY (Hz)

0

30

50

275

LTC1060 • TA02

10

–10

125

175

225

100

150

200

250

70

20

40

0

60

, LTC and LT are registered trademarks of Linear Technology Corporation.

LTCMOS trademark of Linear Technology Corporation.