Datasheet

14
LT1078/LT1079
10789fe
TYPICAL APPLICATIONS
U
85V, –100V Common Mode Range
Instrumentation Amplifier (A
V
= 10)
+
–
+
–
6
5
7
1/2 LT1078
100k
100k
1/2 LT1078
2
3
1
OUTPUT
8V TO –9V
LT1078/79 • TA06
BANDWIDTH= 2kHz
OUTPUT OFFSET= 8mV
OUTPUT NOISE= 0.8mV
P-P
(0.1Hz TO 10Hz)
= 1.4mV
RMS
OVER FULL BANDWIDTH
(DOMINATED BY RESISTOR NOISE)
9V
–9V
8
4
1M
10M
1M
10M
10M
+IN
–IN
INPUT RESISTANCE = 10M
+
–
1/2 LT1078
OUTPUT
LT1078/79 • TA07
V
OMIN
= 6mV
NO DISTORTION TO 100Hz
3V
2M
2M
1M
INPUT
1.8V
–1.8V
1.8V
0V
Half-Wave Rectifier
Absolute Value Circuit (Full-Wave Rectifier)
+
–
–
+
5
6
7
1/2 LT1078
1/2 LT1078
2
3
1
OUTPUT
LT1078/79 • TA08
V
OMIN
= 4mV
NO DISTORTION TO 100Hz
5V
8
4
200k
200k
INPUT
1N4148
3.5V
–3.5V
0V
3.5V
Programmable Gain Amplifier (Single Supply)
13
12
14
OUT
+
–
1/4 LT1079
9
10
+
–
1/4 LT1079
6
5
+
–
1/4 LT1079
2
3
88
3
1
2
7
4
9
A
C
B
+
–
1/4 LT1079
7
CD4016B
13 5 6
11
4
11
1
3V TO 18V
3V TO 18V
1M100k10k1.11k
IN
LT1078/79 • TA09
ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED
CD4016B
GAIN PIN 13 PIN 5 PIN 6
1000 HIGH LOW LOW
100 LOW HIGH LOW
10 LOW LOW HIGH