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LTC1164-8 Datasheet(PDF) 9 Page - Linear Technology |
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LTC1164-8 Datasheet(HTML) 9 Page - Linear Technology |
9 / 12 page 9 LTC1164-8 APPLICATIONS INFORMATION Printed Circuit Layout For optimum filter performance, an LTC1164-8 should be operating on a printed circuit board that has been laid out for precision analog signal processing circuits. On a printed circuit board, an LTC1164-8 should be surrounded with an adequate analog signal ground plane and its power supply pins bypassed to ground with 0.1 µF capacitors. The ground plane of an LTC1164-8 and any digital ground plane should preferably meet at a single point on a system ground (star system ground). The following external filter connections should be one inch or less: N Package Resistor RIN to Pin 2 Pin 14 to Pin 7 Pin 9 to the Inverting Node of an External Op Amp Ground Pins 1, 3, 5, 6, 8, 10 and 13 SW Package Resistor RIN to Pin 2 Pin 16 to Pin 8 Pin 9 to the Inverting Node of External Op Amp Ground Pins 1, 3, 5, 6, 7, 10, 11, 13 and 15 Any signal or power supply printed circuit traces should be at least 0.2 inches away from the above mentioned connections (this rule applies also to the routing of the printed circuit trace originating from a clock source in a digital circuit and terminating at a clock input pin of an LTC1164-8). Operating an LTC1164-8 in an IC socket is not recommended. Tone Detector and Average Value Circuit TYPICAL APPLICATIONS N RF 61.9k CF C1 5k 5k R2 100k 5k 5k 1N458 R1 10k 1/2 LT1413 5V 4 11 –5V 1/2 LT1413 0.1 µF 0.1 µF C2 VOUT = AVERAGE OF ABS [VPEAK × SIN (2π × fCENTER × t)], ±10% FROM 1VP-P TO 7VP-P RIN = 340k/GAIN; fCENTER = fCLK/100; 1/(2π × RF × CF) ≥ 10 × fCENTER 1/(2 π × R1 × C1) ≤ fCENTER/10; 1/(2π × R2 × C2) ≤ fCENTER/25; R2 × C2 = R3 × C3 1/2 LT1413 1N458 A B A 5k 5k R3 100k VOUT LTC1164-8 • TA03 1/2 LT1413 C3 B 0.1 µF 0.1 µF 1N4148 LTC1164-8 –5V 5V 1N4148 VIN RIN 340k fCLK 100kHz 1 2 3 4 5 6 7 14 13 12 11 10 9 8 |
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Similar Description - LTC1164-8 |
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