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PDF OPA37 Data sheet ( Hoja de datos )

Número de pieza OPA37
Descripción Ultra-Low Noise Precision OPERATIONAL AMPLIFIERS
Fabricantes Burr-Brown 
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No Preview Available ! OPA37 Hoja de datos, Descripción, Manual

®
OPA27
OPA27
OPA27
OPA37
Ultra-Low Noise Precision
OPERATIONAL AMPLIFIERS
FEATURES
q LOW NOISE: 4.5nV/Hz max at 1kHz
q LOW OFFSET: 100µV max
q LOW DRIFT: 0.4µV/°C
q HIGH OPEN-LOOP GAIN: 117dB min
q HIGH COMMON-MODE REJECTION:
100dB min
q HIGH POWER SUPPLY REJECTION:
94dB min
q FITS OP-07, OP-05, AD510, AD517
SOCKETS
APPLICATIONS
q PRECISION INSTRUMENTATION
q DATA ACQUISITION
q TEST EQUIPMENT
q PROFESSIONAL AUDIO EQUIPMENT
q TRANSDUCER AMPLIFIER
q RADIATION HARD EQUIPMENT
DESCRIPTION
The OPA27/37 is an ultra-low noise, high precision
monolithic operational amplifier.
Laser-trimmed thin-film resistors provide excellent
long-term voltage offset stability and allow superior
voltage offset compared to common zener-zap tech-
niques.
A unique bias current cancellation circuit allows bias
and offset current specifications to be met over the full
–55°C to +125°C temperature range.
The OPA27 is internally compensated for unity-gain
stability. The decompensated OPA37 requires a closed-
loop gain 5.
The Burr-Brown OPA27/37 is an improved replace-
ment for the industry-standard OP-27/OP-37.
8
Trim
1
Trim
2
–In
3
+In
7
+VCC
6
Output
4
–VCC
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 • Twx: 910-952-1111
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1984 Burr-Brown Corporation
PDS-1466M
OPPArin2ted7in, U3.S7.A. March, 1998
®

1 page




OPA37 pdf
TYPICAL PERFORMANCE CURVES
At TA = +25°C, ±VCC = ±15VDC, unless otherwise noted.
INPUT OFFSET VOLTAGE WARM-UP DRIFT
+10
+5
G
0
–5
–10
0
TO-99
12345
Time From Power Turn-On (min)
6
INPUT OFFSET VOLTAGE CHANGE
DUE TO THERMAL SHOCK
+20
+10
+25°C +70°C
0
–10
TA = +25°C to TA = +70°C
Fluid Bath
–20
–1
0 +1 +2 +3 +4
Time From Thermal Shock (min)
+5
INPUT VOLTAGE NOISE vs NOISE BANDWIDTH
(0.1Hz to Indicated Frequency)
10
1
0.1
0.01
100
RS = 0
1k 10k
Noise Bandwidth (Hz)
100k
VOLTAGE NOISE SPECTRAL DENSITY
vs SUPPLY VOLTAGE
5
10Hz
4
3 1kHz
2
1
0 ±5 ±10 ±15 ±20
Supply Voltage (VCC )
TOTAL INPUT VOLTAGE NOISE SPECTRAL DENSITY
vs SOURCE RESISTANCE
100
80
60 R1
40 -
+
20 R1
10 RSOURCE = 2 x R1
8
6
10Hz
4
1kHz
2
Resistor Noise Only
1
100
1k
Source Resistance ()
10k
VOLTAGE NOISE SPECTRAL DENSITY
vs TEMPERATURE
5
10Hz
4
1kHz
3
2
1
–75 –50 –25 0 +25 +50 +75 +100 +125
Ambient Temperature (°C)
®
5 OPA27, 37

5 Page





OPA37 arduino
3
–In
Gain = 100
For gain = 1000 use INA106 differential amplifier.
6
OPA37
Bandwidth 500kHz
2 Burr-Brown INA105
Differential Amplifier
RF
5k
25k
25k
25
RG
101
Input Stage Gain = 1 + 2RF /RG
RF
5k
2
6
OPA37
3
+In
3 25k
25k
1
6 Output
FIGURE 12. Low Noise Instrumentation Amplifier.
1k
200
500pF
2
3 OPA37
6
1M
0.1µF
Output
2k
EDO 6166
Transducer
Frequency Response
1kHz to 50kHz
FIGURE 13. Hydrophone Preamplifier.
0.1µF
100
100k
2
OPA27
3
6
Output
Dexter 1M
Thermopile
Detector
NOTE: Use metal film resistors
and plastic film capacitor. Circuit
must be well shielded to achieve
low noise.
Responsivity 2.5 x 104V/W
Output Noise 30µVrms, 0.1Hz to 10Hz
20pF
TTL INPUT GAIN
“1” +1
“0” –1
9.76k
500
Input
TTL
In
10k
2
D1
D2
4.99k
S1
S2
3 OPA27
1
6
8
DG188
4.75k
1k
Offset
Trim +VCC
Balance
Trim
Output
4.75k
FIGURE 14. Long-Wavelength Infrared Detector Amplifier.
FIGURE 15. High Performance Synchronous Demodulator.
®
11 OPA27, 37

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