LT1078/LT1079
U
TYPICAL APPLICATIONS
85V, –100V Common Mode Range
Instrumentation Amplifier (AV = 10)
Half-Wave Rectifier
2M
1M
9V
10M
3V
2M
10M
10M
8
2
3
INPUT
+IN
–IN
–
–
100k
100k
1
6
OUTPUT
–
1/2 LT1078
1/2 LT1078
1M
7
OUTPUT
+
+
1/2 LT1078
8V TO –9V
4
5
V
= 6mV
LT1078/79 • TA06
OMIN
+
NO DISTORTION TO 100Hz
–9V
1M
1.8V
1.8V
0V
BANDWIDTH = 2kHz
OUTPUT OFFSET = 8mV
OUTPUT NOISE = 0.8mV(0.1Hz TO 10Hz)
–1.8V
LT1078/79 • TA07
P-P
=
1.4mV OVER FULL BANDWIDTH
RMS
(DOMINATED BY RESISTOR NOISE)
10M
INPUT RESISTANCE
=
Absolute Value Circuit (Full-Wave Rectifier)
200k
3.5V
0V
5V
200k
8
2
3
INPUT
–
1
5
6
+
1/2 LT1078
7
1N4148
3.5V
OUTPUT
+
1/2 LT1078
4
–
–3.5V
LT1078/79 • TA08
V
= 4mV
OMIN
NO DISTORTION TO 100Hz
Programmable Gain Amplifier (Single Supply)
1.11k
10k
100k
1M
3V TO 18V
3V TO 18V
11
4
2
–
1
1
1/4 LT1079
13
12
–
3
A
+
6
5
14
2
4
9
OUT
–
1/4 LT1079
11
7
B
3
8
1/4 LT1079
+
LT1078/79 • TA09
9
+
–
C
7
8
CD4016B
1/4 LT1079
GAIN
1000
100
10
PIN 13
HIGH
LOW
PIN 5
LOW
HIGH
LOW
PIN 6
LOW
LOW
HIGH
CD4016B
10
IN
+
13
5
6
ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED
LOW
14
Linear [ Linear ]
