16
LTC1440/LTC1441/LTC1442
144012fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LT 0806 REV D • PRINTED IN USA
© LINEAR TECHNOLOGY CORPORATION 1996
10kHz V/F Converter
TYPICAL APPLICATION
U
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
–
+
100pF**
50pF
2.2µF
1.2M*
10kHz TRIM
200k
10M
100k
2k*
LM334
+V
6.2V TO 12V
LT1034-1.2
LT1034-1.2
2.7M
C1
1/2 LTC1441
f
OUT
0kHz TO 10kHz
74C14
1440/1/2 TA04
0.01µF
0.1µF
INPUT
0V TO 5V
Q5
Q6
15k
2M TYP
100Hz TRIM
–
+
C2
1/2 LTC1441
Q1
Q8
Q2
Q3
Q4
0.47µF
Q7
= HP5082-2810
= 1N4148
= 2N2222
= 1% METAL FILM
= POLYSTYRENE
*
**
+
+
