LT1011 Linear Technology, LT1011 Datasheet - Page 11

• Manufacturer Part Number: LT1011
• Description: Voltage Comparator
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
INPUT
2k
**
*
3
2
MYLAR
SELECT FOR REQUIRED RESET TIME CONSTANT
Direct Strobe Drive When CMOS* Logic
–15V
Combining Offset Adjust and Strobe
LT1011
–
+
Uses Same V
4
–
+
LT1011
8
LT1011
15V
1M**
5
8
V
20k
Positive Peak Detector
+
*NOT APPLICABLE FOR TTL LOGIC
10k
1
+
7
6
6
C1*
2 F
+
INPUT
Supply as LT1011
100pF
10k
1M**
2k
U
1k
2
3
1011 TA13
+
–
TTL OR CMOS
5V
LT1008
3
2
–15V
–
+
LT1011
V
8
1011 TA17
4
+
1011 TA14
15V
8
6
1
Negative Peak Detector
7
OUTPUT
+
C1*
2 F
**
*
MYLAR
SELECT FOR REQUIRED RESET TIME CONSTANT
100pF
10k
2R
C1
0.015 F
H
**
**
*
†
1% METAL FILM
TRW TYPE MTR-5/120ppm/ C, 25k R
C1: 0.015 F = POLYSTYRENE, –120ppm/ C,
NOTE: COMPARATOR CONTRIBUTES 10ppm/ C DRIFT
FOR FREQUENCIES BELOW 10kHz
LOW DRIFT AND ACCURATE FREQUENCY ARE
OBTAINED BECAUSE THIS CONFIGURATION
REJECTS EFFECTS DUE TO INPUT OFFSET
VOLTAGE AND BIAS CURRENT OF THE
COMPARATOR
–
+
2
3
LT1011
**
6
Combining Offset Adjustment and Hystersis
–
+
30ppm WESCO TYPE 32-P
20k
LT1008
2
3
1
+
–
5
LT1011
8
1011 TA18
1
Low Drift R/C Oscillator
7
15V
R
5k
H
8
*
6
4
7
V
OUTPUT
15V
+
1011 TA15
LT1011/LT1011A
R
1k
L
**
*
HYSTERESIS IS 0.45mV/ A OF
CURRENT CHANGE IN R
THIS RESISTOR CAUSES HYSTERESIS
TO BE CENTERED AROUND V
S
200k
†
10k*
10k*
1011 TA16
74HC04
10k*
6
H
11
BUFFERED
OUTPUT
OS
15V