LT1078_15 Datasheet, PDF (14/20 Pages) Linear Technology – Micropower, Dual and Quad, Single Supply, Precision Op Amps

LT1078/LT1079
TYPICAL APPLICATIONS
85V, –100V Common Mode Range
Instrumentation Amplifier (A_V = 10)
1M
10M
+IN
10M
–IN
9V
10M
2_– 8
1/2 LT1078 ^{1 100k 6} –
3₊
4
7
1/2 LT1078
100k _{5 +}
1M ^–9V
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)
INPUT RESISTANCE = 10M
Half-Wave Rectifier
2M
2M
INPUT
1M
1.8V
–1.8V
3V
–
1/2 LT1078
OUTPUT
+
V_OMIN = 6mV
NO DISTORTION TO 100Hz
1.8V
0V
LT1078/79 • TA07
3.5V
–3.5V
Absolute Value Circuit (Full-Wave Rectifier)
200k
INPUT
200k
5V
3.5V
2_– 8
0V
1
1/2 LT1078
5₊
3₊
4
1N4148
7
1/2 LT1078
6_–
OUTPUT
LT1078/79 • TA08
V_OMIN = 4mV
NO DISTORTION TO 100Hz
Programmable Gain Amplifier (Single Supply)
1.11k
10k
100k
1M
3V TO 18V
2_– ⁴
1/4 LT1079
3₊
11
1
6_–
1/4 LT1079
5₊
7
9_–
1/4 LT1079
IN
10 ₊
ERROR DUE TO SWITCH ON RESISTANCE,
LEAKAGE CURRENT, NOISE AND TRANSIENTS
ARE ELIMINATED
3V TO 18V
11
1
A
2
3B
4
9
C
88
7
CD4016B
13 5 6
13 _–
1/4 LT1079
12 ₊
14 _OUT
LT1078/79 • TA09
GAIN
1000
100
10
CD4016B
PIN 13 PIN 5 PIN 6
HIGH LOW LOW
LOW HIGH LOW
LOW LOW HIGH
10789fe
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