Datasheet LTC1440, LTC1441, LTC1442 (Analog Devices) - 16

LTC1440/LTC1441/LTC1442
U TYPICAL APPLICATION 10kHz V/F Converter
+V 6.2V TO 12V LM334 2k* Q1 Q8 + 2.2 LT1034-1.2 10kHz TRIM µF + 1.2M* 200k INPUT – LT1034-1.2 0.47µF 0V TO 5V C1 0.01µF 1/2 LTC1441 Q2 + 50pF Q3 100k Q4 2M TYP 100Hz TRIM = HP5082-2810 15k = 1N4148 Q7 Q5 = 2N2222 100pF** f = 1% METAL FILM OUT * 0kHz TO 10kHz = POLYSTYRENE ** Q6 10M 74C14 2.7M 0.1µF – C2 1/2 LTC1441 + 1440/1/2 TA04
RELATED PARTS PART NUMBER DESCRIPTION COMMENTS
LTC1443 1.182V Reference with Micropower Quad Comparators 1% Accuracy, 8.5µA Maximum Current, Ref Output Drives 0.01µF LTC1444/LTC1445 1.2V Reference with Quad Comparator 1% Accuracy, 8.5µA Maximum Current, Ref Output Drives 0.01µF with Adjustable Hysteresis LTC1540 1.182V Reference with Nanopower Comparator DFN Package 0.3µA Quiescent Current (Typical), Reference with Adjustable Hysteresis Drives 0.01µF LTC1541 1.2V Reference with Micropower Amplifier and Comparator DFN Package 1.25% Accuracy, Rail-to-Rail Out, Low Offset Amplifier LTC1842/LTC1843 1.82V Reference with Dual Comparators 1% Accuracy, Open-Drain Out, Reference Drives 0.01µF with Adjustable Hysteresis LTC1998 1.2 Reference with Comparator with Adjustable Thesholds Li-Ion Low Battery Monitor, SOT23, 1% Accuracy LT6700-1 0.4 Reference with Low Voltage Dual Comparators SOT23, 1.4V to 18.5V Supply Range, ±2% Over Temperature LT6700-2/LT6700-3 144012fd LT 0806 REV D • PRINTED IN USA 16 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com © LINEAR TECHNOLOGY CORPORATION 1996