Datasheet

14
LT1013/LT1014
10134fb
Methane Concentration Detector with Linearized Output
+
–
+
–
13
12
14
A4
LT1014
74C04
74C04
74C04
470pF
10k
470pF
+5V
–5V
1N4148
OUTPUT
500ppm-10,000ppm
50Hz 1kHz
2k
1N4148 (4)
+
–
6
5
7
A2
LT1014
Q4
Q3Q2
Q1
150k*2k
1000pF
100k*
+
–
2
3
1
A1
LT1014
4
+5V
5k
1000ppm
TRIM
12k*
LTC1044
10µF
423
58
+5V
SENSOR
9
10
8
A3
LT1014
11
100k*
390k*
LT1004
1.2V
10µF
+
0.033
14
1
–5V
+5V
CD4016
1% METAL FILM RESISTOR
SENSOR = CALECTRO-GC ELECTRONICS #J4-807 OR FIGARO #813
*
–5V
+
CA3046
1
14
2.7k
1013/14 TA11
Low Power 9V to 5V Converter
–
+
LT1013
1
2
3
330k
+9V
LT1004
1.2V
120k
1%
390k
1%
5V
20mA
2N5434
+
–
LT1013
7
5
6
HP5082-2811
100µA
8
4
+9V
47k
+
471N4148
L
10k
10k
2N2905
L = DALE TE-3/Q3/TA.
SHORT CIRCUIT CURRENT = 30mA.
≈ 75% EFFICIENCY.
SWITCHING PREREGULATOR CONTROLS DROP ACROSS FET TO 200mV.
+9V INPUT
V
D
= 200mV
1013/14 TA12
TYPICAL APPLICATIO S
U