LT1007 Datasheet, PDF (20/24 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
The sine wave generator application shown below, utilizes the low-noise and low-distortion characteristics of
the LT1037.
430 Ω
#327 Lamp
2
6
LT1037
3
R
Output
C
CR
+ f
1
2_π RC
R =1591.5Ω ± 0.1 %
C = 0.1 µF ± 0.1 %
TOTAL HARMONIC DISTORTION ≤ 0.0025%
NOISE ≤ 0.001%
AMPLITUDE = ± 8 V
OUTPUT FREQUENCY = 1.000 kHz FOR VALUES GIVEN ± 0.4%
Figure 41. Ultra-Pure 1-kHz Sine-Wave Generator
EQUIVALENT INPUT NOISE VOLTAGE
OVER A 10-SECOND PERIOD
f = 0.1 Hz to 10 Hz
0 1 2 3 4 5 6 7 8 9 10
t – Time – s
Figure 42
365 Ω
1%
340 kΩ 15 kΩ 20 kΩ
1%
5% Trim
15 V
2
7
6
LT1037
3
4
Output
IN + – 15 V
RN60C Film Resistors
The high gain and wide bandwidth of the LT1037 and (LT1007)
is useful in low-frequency high-closed-loop-gain amplifier
applications. A typical precision operational amplifier may have
an open loop gain of one million with 500 kHz bandwidth. As the
gain error plot shows, this device is capable of 0.1% amplifying
accuracy up to 0.3 Hz only. Even instrumentation range signals
can vary at a faster rate. The LT1037’s gain precision –
bandwidth product is 200 times higher, as shown.
Figure 43. Gain 1000 Amplifier With
0.01% Accuracy, DC to 5 Hz
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