LT1011_15 Datasheet, PDF (12/20 Pages) Linear Technology – Voltage Comparator

LT1011/LT1011A
Typical Applications
Strobing
Driving Ground Referred Load
2₊
7
LT1011
3_–
6
TTL
STROBE
1k
1011 TA04
NOTE: DO NOT GROUND STROBE PIN
V⁺
V^++**
2_–
8
7
INPUTS*
LT1011
3₊
1
4
L1
V^–
1011 TA07
*INPUT POLARITY IS REVERSED
WHEN USING PIN 1 AS OUTPUT
**V⁺⁺ MAY BE ANY VOLTAGE ABOVE V^–.
PIN 1 SWINGS TO WITHIN ≈2V OF V⁺⁺
HIGH
LIMIT
V_IN
LOW
LIMIT
Window Detector
V⁺
2₊
LT1011
3_–
1
2₊
LT1011
3_–
1
R_L
7
OUTPUT HIGH
INSIDE “WINDOW”
AND LOW ABOVE
HIGH LIMIT OR
BELOW LOW LIMIT
7
1011 TA08
Using Clamp Diodes to Improve Frequency Response*
CURRENT MODE
INPUT
(DAC, ETC)
2₊
D1 D2
LT1011
3_–
7
OUTPUT
VOLTAGE
INPUT
R1
GROUND OR
LOW IMPEDANCE
REFERENCE
*SEE CURVE, “RESPONSE TIME vs INPUT STEP SIZE” 1011 TA09
Crystal Oscillator
5V
10k
85kHz
2₊
8
100pF
7
LT1011
3_–
4
1
1k 50k
OUT
10k
10k
1011 TA10
Noise Immune 60Hz Line Sync**
High Efficiency** Motor Speed Controller
5V
60Hz
INPUT
2V_RMS
TO
25V_RMS
R1*
330k
C1
0.22µF
R6
27k
5V
R2
75k
5V
3_–
8
7
LT1011
2₊
1
4
R3
1k
OUTPUT
60Hz
R4
27k
1011 TA11
R5
10k ^{*INCREASE R1 FOR LARGER INPUT VOLTAGES}
**LT1011 SELF OSCILLATES AT ≈60Hz CAUSING
IT TO “LOCK” ONTO INCOMING LINE SIGNAL
C1 ⁺
50µF
15V
R1
1k
Q1
2N6667
1N4002
R2
R3*
470Ω
10k
MOTOR-TACH
GLOBE 397A120-2
MOTOR TACH
15V
8
2
R5
R6
100k ^2k
7
LT1011
3
1
C2*
0.1µF
C3
0.1µF
R7
1k
1011 TA12
4
–5V TO
–15V
R4
1k
0V TO 10V
INPUT
*R3/C2 DETERMINES OSCILLATION
FREQUENCY OF CONTROLLER
**Q1 OPERATES IN SWITCH MODE
1011afe
12
For more information www.linear.com/LT1011