LT1008_1 Datasheet, PDF (10/16 Pages) Linear Technology – Picoamp Input Current, Microvolt Offset, Low Noise Op Amp

LT1008
APPLICATIO S I FOR ATIO
Follower Feedforward Compensation
30pF
10k
2_–
6
LT1008
OUTPUT
10k
INPUT*
3₊
8
1000pF
*SOURCE RESISTANCE ≤15k FOR STABILITY
1008 AI06
5μs/DIV
1008 AI07
TYPICAL APPLICATIO S
Logarithmic Amplifier
10k*
INPUT
Q1A
2N2979
Q1B
2N2979
124k* 5.1k
15V
15V
2_–
7
LT1008
330pF
6
2k
15.7k
3₊
4
8
1
–15V OUTPUT
100pF
2
6
1k
TEL. LABS
TYPE Q81
LM107
3
LT1004C
1.2V
*1% FILM RESISTOR
30pF
LOW BIAS CURRENT AND OFFSET VOLTAGE OF THE LT1008
ALLOW 4.5 DECADES OF VOLTAGE INPUT LOGGING
Amplifier for Bridge Transducers
S1
100k
T
R1
100k
S2
100k
T
R2
100k
V⁺
R3
510k
R4
510k
R6
56M
R5
56M
C1
30pF
1
2_–
LT1008 ^{8 6}
3₊
OUTPUT
VOLTAGE GAIN ≈ 100
1008 TA04
10
Saturated Standard Cell Amplifier
15V
3₊
7
2N3609
6
LT1008
1.018235V
2_–
4
8
+
SATURATED
STANDARD
1
–15V
CELL #101
EPPLEY LABS
NEWPORT, R.I.
1000pF _R2
R1
OUTPUT
1008 TA05
THE TYPICAL 30pA BIAS CURRENT OF THE LT1008 WILL
DEGRADE THE STANDARD CELL BY ONLY 1ppm/YEAR.
NOISE IS A FRACTION OF A ppm. UNPROTECTED GATE
MOSFET ISOLATES STANDARD CELL ON POWER DOWN
1008fb