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OPA37 Datasheet(PDF) 11 Page - Texas Instruments

Part # OPA37
Description  Ultra-Low Noise, Precision OPERATIONAL AMPLIFIERS
PDF  24 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

OPA37 Datasheet(HTML) 11 Page - Texas Instruments

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OPA27, OPA37
11
SBOS135C
www.ti.com
FIGURE 11. Low Frequency Noise Comparison.
FIGURE 10. NAB Tape Head Preamplifier.
FIGURE 9. High Slew Rate Unity-Gain Inverting Amplifier.
OPA37
Output
Input
1k
Ω
1k
Ω
2
3
6
500pF
250
Ω
OPA37
Output
316k
Ω
4.99k
Ω
G
≈ 50dB at 1kHz.
Metal film resistors.
Film capacitors.
R
L and CL per head
manufacturer’s
recommendations.
100
Ω
2
3
6
0.01
µF
1
µF
20k
Ω
R
L
Magnetic Tape Head
C
L
10k
Ω
0.5
µV
0.5
µV
0.5
µV
0.5
µV
5
µV
A. 741 noise with circuit well-shielded from air
currents and RFI. (Note scale change.)
B. OP-07AH with circuit well-shielded from air
currents and RFI.
C. OPA27AJ with circuit well-shielded from air
currents and RFI. (Represents ultimate
OPA27 performance potential.)
D. OPA27 with circuit unshielded and exposed
to normal lab bench-top air currents.
(External thermoelectric potentials far
exceed OPA27 noise.)
E. OPA27 with heat sink and shield which
protects input leads from air currents.
Conditions same as (D).
Offset
G =1k
10Hz Low-
Pass Filter
Chart
Recorder
10mV/mm
5mm/s
DUT
Total Gain = 106
10
Ω



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