LTC1564 LINER [Linear Technology], LTC1564 Datasheet
LTC1564
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LTC1564 Summary of contents
Page 1
... A latching digital interface stores can be bypassed for control directly from the pins. The LTC1564 operates from 2.7V to 10V total (single or split supplies) and comes in a 16-pin surface mount SSOP. The LTC1564 is a rail-to-rail high resolution 8th-order lowpass filter with two stopband notches, giving approxi- mately 100dB attenuation at 2 ...
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... Total Supply Voltage ( .............................. 11V Input Voltage ............................. V Output Short-Circuit Duration .......................... Indefinite Operating Temperature Range LTC1564C .............................................. LTC1564I .......................................... – Storage Temperature Range ................. – 150 C Lead Temperature (Soldering, 10 sec).................. 300 C ELECTRICAL CHARACTERISTICS range, otherwise specifications are at T PARAMETER Total Supply Voltage ...
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... See “Floatable Digital Inputs” in Applications Information section. Roll-Offs Over Temperature ) (f = 10kHz 10kHz C SINGLE 5V SUPPLY – –5 –10 5 6.25 7.5 8.75 10 11.25 FREQUENCY (kHz) LTC1564 = 10k, unless otherwise noted. L MIN TYP MAX 5 150 100 150 180 175 1.08 1.90 4.50 –1.08 –1.90 0.50 3 ...
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... LTC1564 W U TYPICAL PERFOR A CE CHARACTERISTICS Passband Roll-Off SINGLE –0.25 –0.50 –0.75 –1.00 –1.25 –1. Detail of Stopband Response – 10kHz C – –60 –70 –80 –90 –100 –110 –120 –130 – ...
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... If F and G bits are latched (CS/HOLD = 1) during the shutdown state, the latch will retain its contents. A small pull-up current source at the EN input causes the LTC1564 shutdown state if the EN pin is left open. Therefore, the user must connect the EN pin to logic optionally 0V with 5V supplies) for normal filter operation ...
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... Logic 0 on this pin immediately resets the internal F and G latch to all zeros, regardless of the state of the CS/HOLD pin or the input pins. This causes the LTC1564 to enter a mute state (powered but with zero signal gain) because of the resulting F = 0000 command. Logic 1 permits the other pins to control F and G ...
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... CTIO S Table 3. Summary of LTC1564 Digital Controls and Modes EN RST CS/HOLD Other Than 0000 Other Than 0000 X = Doesn’t Matter + ANALOG ...
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... CTIO S IN (Pin 16): Analog Input. The filter in the LTC1564 senses the voltage difference between the IN and AGND pins. In normal filtering ( RST = 1, F code other than 0000), the IN pin connects within the LTC1564 to a digitally controlled resistance whose other end is a current-sum- ming point at the AGND potential ...
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... Note particularly that the pull-up current source at the EN pin forces the LTC1564 to the shutdown state if this pin is left open. Therefore the user must connect EN deliberately to a logic-0 level (V for normal filter operation. The other digital inputs float to ...
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... C higher F codes). The LTC1564 enters the Mute state when the F bits at the latch output (Figure 3) become 0000. (It can be remem bered as a “zero-bandwidth” frequency setting.) This is ...
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... More Information, See Linear Technology Magazine, May 2001) Boosting a 100mV Input Signal to Nearly Fill the Input Range of the LTC1608 ADC. Input Frequency of 40kHz, RMS LTC1608 f = 204.8ksps, LTC1564 is Set for f SAMPLE is 86dB – 88dB, SNR = 85dB with 100mV 2 Information furnished by Linear Technology Corporation is believed to be accurate and reliable. ...
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... LTC1564 U TYPICAL APPLICATIO S Single Supply, Very Low Noise Input Buffer for High Impedance Source Driving the Input of LTC1564 + – SOURCE LT1677 10k AGND SOURCE – OUT SUPPLY FROM 2.7V TO 10.5V + TIE F AND G PINS TO V ...