LT1014DSW Datasheet, PDF (15/26 Pages) Linear Integrated Systems – Single Supply Operation Input Voltage Range Extends to Ground

typical Applications
Methane Concentration Detector with Linearized Output
5V
1
*1% METAL FILM RESISTOR
SENSOR = CALECTRO-GC ELECTRONICS #J4-807 OR FIGARO #813
LT1013/LT1014
LT1004
1.2V
2.7k
0.033
390k* _{9 –}
A3
LT1014
10 ₊
11
14
–5V
CD4016
8
5
–5V
10µF
LTC1044
8
4
23
10µF
+
100k*
5V
5k
1000ppm
TRIM
SENSOR
5V
2_– ⁴
A1
LT1014
3₊
1 ^100k*
Q1
1000pF
6_–
A2
LT1014
5₊
1N4148 (4)
13 _–
A4
LT1014
12 ₊
74C04
14
74C04
470pF _10k
470pF
CA3046
Q4
Q2 Q3
7 ^2k
150k*
5V
1 _74C04
14
–5V
1N4148
OUTPUT
500ppm TO 10,000ppm
50Hz TO 1kHz
2k
12k*
1013/14 TA11
9V INPUT
2N2905
10k
10k
Low Power 9V to 5V Converter
L
+
1N4148
47
2N5434
V_D = 200mV
9V
8
5
HP5082-2811
100µA
7
LT1013
6
4
47k
2
1
LT1013
3
330k
9V
LT1004
1.2V
L = DALE TE-3/Q3/TA.
SHORT CIRCUIT CURRENT = 30mA.
≈ 75% EFFICIENCY.
SWITCHING PREREGULATOR CONTROLS DROP ACROSS FET TO 200mV.
5V
20mA
390k
1%
120k
1%
1013/14 TA12
10134fd
15