LT2079 LINER [Linear Technology], LT2079 Datasheet - Page 13

• Manufacturer Part Number: LT2079
• Description: Micropower, Dual and Quad, Single Supply, Precision Op Amps
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
–IN
+IN
R
10M
–1.8V
1.8V
Picoampere Input Current, Triple Op Amp
Instrumentation Amplifier with Bias Current Cancellation
INPUT
2R
20M
20M
2R
2M
1M
12
13
3
2
6
5
Half-Wave Rectifier
+
–
–
+
+
–
1/4 LT2079
1/4 LT2079
1/4 LT2079
9V
1.11k
–
+
4
11
1/2 LT2078
IN
3V
2M
ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED
1.8V
14
1
7
0V
2
3
3V TO 18V
–
+
1/4 LT2079
V
NO DISTORTION TO 100Hz
R1
1M
R
200k
R1
1M
1M
OMIN
R2
G
1M
R2
GAIN = 1 + 2R1
INPUT BIAS CURRENT TYPICALLY < 150pA
INPUT RESISTANCE = 3R = 30M FOR VALUES SHOWN
NEGATIVE COMMON MODE LIMIT = (I
GAIN BANDWIDTH PRODUCT = 1.8MHz
10k
4
11
= 6mV
U
10
R3
9.1M
9
LT2078/79 • TA07
OUTPUT
–
+
1/4 LT2079
1
R
Programmable Gain Amplifier (Single Supply)
G
6
5
R3
R2
–
+
1/4 LT2079
= 100 FOR VALUES SHOWN
100k
8
R3
9.1M
OUTPUT
4mV TO 8.2V
7
LT2078/79 • TA05
10
B
)(2R) + 20mV 140mV
9
–
+
–3.5V
1/4 LT2079
3.5V
INPUT
1M
8 8
1
3
+IN
–IN
B
3V TO 18V
13
CD4016B
200k
Absolute Value Circuit (Full-Wave Rectifier)
10M
10M
A
C
5
11
85V, –100V Common Mode Range
Instrumentation Amplifier (A
INPUT RESISTANCE =10M
6
1M
2
3
2
3
2
4
9
7
OUTPUT OFFSET =8mV
–
+
OUTPUT NOISE =0.8mV
–
+
1/2 LT2078
1/2 LT2078
BANDWIDTH =2kHz
–9V
13
12
1M
9V
5V
4
8
GAIN PIN 13
1000
100
10
4
8
200k
–
+
1/4 LT2079
=1.4mV
HIGH
LOW
LOW
1
(DOMINATED BY RESISTOR NOISE)
1
1N4148
LT 2078/LT 2079
100k
100k
CD4016B
LT2078/79 • TA09
PIN 5
HIGH
P-P
RMS
LOW
LOW
14
V
NO DISTORTION TO 100Hz
OMIN
(0.1Hz TO 10Hz)
OVER FULL BANDWIDTH
5
6
5
6
OUT
PIN 6
HIGH
LOW
LOW
= 4mV
–
+
+
–
1/2 LT2078
1/2 LT2078
V
10M
3.5V
= 10)
0V
LT2078/79 • TA08
7
7
13
OUTPUT
8V TO –9V
LT2078/79 • TA06
OUTPUT