LT1007_15 Datasheet, PDF (1/16 Pages) Linear Technology – Low Noise, High Speed Precision Operational Amplifiers

LT1007/LT1037
Low Noise, High Speed
Precision Operational Amplifiers
FEATURES
s _{Guaranteed 4.5nV/√Hz 10Hz Noise}
s _{Guaranteed 3.8nV/√Hz 1kHz Noise}
s _{0.1Hz to 10Hz Noise, 60nVP-P Typical}
s _{Guaranteed 7 Million Min Voltage Gain, RL = 2k}
s _{Guaranteed 3 Million Min Voltage Gain, RL = 600Ω}
s _{Guaranteed 25µV Max Offset Voltage}
s _{Guaranteed 0.6µV/°C Max Drift with Temperature}
s _{Guaranteed 11V/µs Min Slew Rate (LT1037)}
s _{Guaranteed 117dB Min CMRR}
U
APPLICATIO S
s _{Low Noise Signal Processing}
s _{Microvolt Accuracy Threshold Detection}
s _{Strain Gauge Amplifiers}
s _{Direct Coupled Audio Gain Stages}
s _{Sine Wave Generators}
s _{Tape Head Preamplifiers}
s _{Microphone Preamplifiers}
, LTC and LT are registered trademarks of Linear Technology Corporation.
DESCRIPTIO
The LT^®1007/LT1037 series features the lowest noise
performance available to date for monolithic operational
amplifiers: 2.5nV/√Hz wideband noise (less than the noise of
a 400Ω resistor), 1/f corner frequency of 2Hz and 60nV peak-
to-peak 0.1Hz to 10Hz noise. Low noise is combined with
outstanding precision and speed specifications: 10µV offset
voltage, 0.2µV/°C drift, 130dB common mode and power
supply rejection, and 60MHz gain bandwidth product on the
decompensated LT1037, which is stable for closed-loop
gains of 5 or greater.
The voltage gain of the LT1007/LT1037 is an extremely high
20 million driving a 2kΩ load and 12 million driving a 600Ω
load to ±10V.
In the design, processing and testing of the device, particular
attention has been paid to the optimization of the entire
distribution of several key parameters. Consequently, the
specifications of even the lowest cost grades (the LT1007C
and the LT1037C) have been spectacularly improved com-
pared to equivalent grades of competing amplifiers.
The sine wave generator application shown below utilizes the
low noise and low distortion characteristics of the LT1037.
TYPICAL APPLICATIO
Ultrapure 1kHz Sine Wave Generator
430Ω
#327 LAMP
2–
LT1037
3+
R
6
OUTPUT
f= ¹
C
2πRC
R = 1591.5Ω ±0.1%
C = 0.1µF ±0.1%
C R _{TOTAL HARMONIC DISTORTION = < 0.0025%}
NOISE = < 0.0001%
AMPLITUDE = ±8V
OUTPUT FREQUENCY = 1.000kHz FOR VALUES GIVEN ±0.4%
1007/37 TA01
0.1Hz to 10Hz Noise
0
2
4
6
8
10
TIME (SEC)
1007/37 TA02
sn100737 100737fbs
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