Datasheet
LT1011/LT1011A
12
1011afe
For more information www.linear.com/LT1011
Typical applicaTions
Strobing Driving Ground Referred Load Window Detector
Using Clamp Diodes to Improve Frequency Response*
Crystal Oscillator
Noise Immune 60Hz Line Sync** High Efficiency** Motor Speed Controller
–
+
LT1011
2
7
6
NOTE: DO NOT GROUND STROBE PIN
TTL
STROBE
1k
3
1011 TA04
–
+
LT1011INPUTS*
2
7
L1
4
1
8
V
–
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
++
*
**
V
++**
V
+
3
1011 TA07
–
+
LT1011
2
HIGH
LIMIT
LOW
LIMIT
7
V
+
R
L
OUTPUT HIGH
INSIDE “WINDOW”
AND LOW ABOVE
HIGH LIMIT OR
BELOW LOW LIMIT
1
3
V
IN
1011 TA08
–
+
LT1011
2
7
1
3
–
+
LT1011
2
R1
D2
VOLTAGE
INPUT
7
1011 TA09
OUTPUT
GROUND OR
LOW IMPEDANCE
REFERENCE
3
CURRENT MODE
INPUT
(DAC, ETC)
D1
*SEE CURVE, “RESPONSE TIME vs INPUT STEP SIZE”
–
+
LT1011
2
7
1k
5V
10k
1
4
8
3
1011 TA10
50k
OUT
10k
10k
100pF85kHz
–
+
LT1011
3
60Hz
INPUT
7
5V
R2
75k
5V
4
1
8
2
5V
1011 TA11
R3
1k
OUTPUT
60Hz
R4
27k
*
**
INCREASE R1 FOR LARGER INPUT VOLTAGES
LT1011 SELF OSCILLATES AT ≈60Hz CAUSING
IT TO “LOCK” ONTO INCOMING LINE SIGNAL
C1
0.22µF
R5
10k
R6
27k
R1*
330k
2V
RMS
TO
25V
RMS
+
–
+
LT1011
2
15V
–5V TO
–15V
0V TO 10V
INPUT
8
3
C2*
0.1µF
R5
100k
C3
0.1µF
R4
1k
R3/C2 DETERMINES OSCILLATION
FREQUENCY OF CONTROLLER
Q1 OPERATES IN SWITCH MODE
*
**
R6
2k
MOTOR
MOTOR-TACH
GLOBE 397A120-2
TACH
R7
1k
1011 TA12
R2
470Ω
R1
1k
R3*
10k
1N4002
C1
50µF
Q1
2N6667
15V
1
7
4
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