LT1078/LT1079
TYPICAL APPLICATIONS
U
Micropower Dead Zone Generator
Q4
Q2
V
SET
DEAD ZONE
1M*
1M**
CONTROL INPUT
0.4V TO 5V
1M**
510k
–
2
3
Q3
INPUT
1
470k
1/4 LT1079
+
1M*
1M**
GAIN
200k
Q1
2N4393
–
9
1M**
–
8
13
1/4 LT1079
+
1N914
10
14
1M
V
OUT
1/4 LT1079
510k
510k
12
+
LT1078/79 • TA12
9V
1N914
1M
1M
680k
Q6
V
V
SET
OUT
2N4393
4
–
6
5
1000pF
7
V
IN
Q5
1/4 LT1079
BIPOLAR SYMMETRY IS EXCELLENT
BECAUSE ONE DEVICE, Q2,
SETS BOTH LIMITS
SUPPLY CURRENT ≈ 240µA
BANDWIDTH = 150kHz
+
V
SET
11
1% FILM
*
**
RATIO MATCH 0.05%
Q2, Q3, Q4, Q5 CA3096 TRANSISTOR ARRAY
–9V
16