LT1007 Datasheet, PDF (21/24 Pages) Linear Technology – Low Noise, High Speed Precision Operational Amplifiers

LT1007, LT1007A, LT1037, LT1037A
LOW-NOISE, HIGH-SPEED, PRECISION OPERATIONAL AMPLIFIERS
SLOS017C – D3195, FEBRUARY 1989 – REVISED JANUARY 1993
APPLICATION INFORMATION
GAIN ERROR
vs
FREQUENCY
CLOSED LOOP GAIN = 1000
1
Typical
Precision
Operational
Amplifier
LT1007
0.1
LT1037
0.01
15 V
10 MΩ
5%
365 Ω
1%
IN +
37
+
8
LT1007
2– ₄
15 kΩ
1%
Output
–15 V
0.001
0.1
+ GAIN ERROR
CLOSED LOOP GAIN
OPEN LOOP GAIN
1
10
100
f – Frequency – Hz
Figure 44.
340 kΩ 1% 20 kΩ 5% ^{10 kΩ}
Trim
2
2
365 Ω 1%
LT1037
3
6
LT1007
3
15 Ω
5%
6
15 Ω
5%
IN +
Output ± 10 V
RL
300 Ω
The addition of the LT1007 doubles the amplifier’s output drive
to ± 33 mA. Gain accuracy is 0.02%, slightly degraded
compared to above because of self heating of the LT1037 under
load.
Figure 46. Precision Amplifier Drives
300-Ω Load to ± 10 V
Positive feedback to one of the nulling terminals creates
approximately 5 µV of hysteresis. Output can sink 16 mA.
Input offset voltage is typically changed less than 5 µV due to
the feedback.
Figure 45. Microvolt Comparator
With Hysteresis
7.8 kΩ
100 Ω 2
15 V
7
100 pF
3
LT1037
4
0.033 µF
6
0.01 µF
100 kΩ
Output
47 kΩ
– 15 V
All Resistors Metal Film
Mag Phono
Input
Figure 47. Phono Preamplifier
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