LT1011 Linear Technology, LT1011 Datasheet - Page 12

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

LT1011/LT1011A
TYPICAL APPLICATIONS
12
5V
R3
3.9k
R4
5.6k
TTL OR CMOS
(OPERATING
3
ON 5V)
15V
1
8
LF398
–15V
18k
R1
R2
1k
START
4
T
T
7
H
L
+
15V
10 • C
[C
6
2 5
ZERO
TRIM
D2
MAX
10 F
D1
C1*
0.1 F
12ms
†
D1
R8
MAX
3k
(pF)][1 s/pF]
†
• (1 s/pF)
R1
5k
D3
U
D3
D4
C**
LM329
86.6k
0.01 F
C2**
15pF
100k
†
D2
C4
R2
R3
0V TO 10V
INPUT
2
3
R5
4.7k
R7
22
R9
3.65k
Capacitance to Pulse Width Converter
GAIN ADJ
4-Digit (10,000 Count) A/D Converter
C3
0.1 F
+
–
5V
2
3
LT1011
8
4
+
FULL-SCALE
–15V
+
–
15V
10 F
1011 TA20
LT1011
8
4
TRIM
R10
1k
†
2N3904
6
1
7
0.01 F
6
1
15V
7
C5
0.01 F
R11
6.8K
50pF
R5
4.7k
R12
6.8k
C6
5V
OUTPUT
1 s/pF
R6
4.7K
CLOCK
1MHz
**
*
ALL DIODES: 1N4148
POLYSTYRENE
NPO
**TYPICAL 2 SECTIONS OF 365pF VARIABLE
*PW = (R2 + R3)(C)
†
LT1011 IS 6pF. THIS IS AN OFFSET TERM.
NEGATIVE SUPPLY IS AVAILABLE (–1V TO –15V)
CAPACITOR WHEN USED AS SHAFT ANGLE
INDICATION
THESE COMPONENTS MAY BE ELIMINATED IF
1011 TA19
R1 + R4
R1
, INPUT CAPACITANCE OF
OUTPUT = 1 COUNT
PER mV, f = 1MHz