Document Outline
- FEATURES
- APPLICATIONS
- DESCRIPTION
- SPECIFICATIONS
- CONNECTION DIAGRAMS
- ABSOLUTE MAXIMUM RATINGS
- PACKAGE/ORDERING INFORMATION
- TYPICAL PERFORMANCE CURVES
- APPLICATIONS INFORMATION
- OFFSET VOLTAGE ADJUSTMENT
- THERMOELECTRIC POTENTIALS
- NOISE: BIPOLAR VERSUS FET
- COMPENSATION
- INPUT PROTECTION
FEATURES
q
LOW NOISE: 4.5nV/
Hz max at 1kHz
q
LOW OFFSET: 100
V max
q
LOW DRIFT: 0.4
V/
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, AND AD517
SOCKETS
Ultra-Low Noise, Precision
OPERATIONAL AMPLIFIERS
APPLICATIONS
q
PRECISION INSTRUMENTATION
q
DATA ACQUISITION
q
TEST EQUIPMENT
q
PROFESSIONAL AUDIO EQUIPMENT
q
TRANSDUCER AMPLIFIERS
q
RADIATION HARD EQUIPMENT
DESCRIPTION
The OPA27 and OPA37 are ultra-low noise, high-precision
monolithic operational amplifiers.
Laser-trimmed thin-film resistors provide excellent long-
term voltage offset stability and allow superior voltage
offset compared to common zener-zap techniques.
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 stabil-
ity. The decompensated OPA37 requires a closed-loop gain
5.
The Burr-Brown OPA27 and OPA37 are improved replace-
ments for the industry-standard OP-27 and OP-37.
OPA27
OPA37
Output
+V
CC
V
CC
+In
In
Trim
Trim
8
7
6
4
1
2
3
OPA27
OPA2
7
SBOS135A JANUARY 1984 REVISED OCTOBER 2003
www.ti.com
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright 1984-2003, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
OPA27, OPA37
2
SBOS135A
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SPECIFICATIONS
At V
CC
=
15V and T
A
= +25
C, unless otherwise noted.
OPA27G
OPA37G
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT NOISE
(6)
Voltage, f
O
= 10Hz
3.8
8.0
nV/
Hz
f
O
= 30Hz
3.3
5.6
nV/
Hz
f
O
= 1kHz
3.2
4.5
nV/
Hz
f
B
= 0.1Hz to 10Hz
0.09
0.25
Vp-p
Current,
(1)
f
O
= 10Hz
1.7
pA/
Hz
f
O
= 30Hz
1.0
pA/
Hz
f
O
= 1kHz
0.4
0.6
pA/
Hz
OFFSET VOLTAGE
(2)
Input Offset Voltage
25
100
V
Average Drift
(3)
T
A MIN
to T
A MAX
0.4
1.8
(6)
V/
C
Long Term Stability
(4)
0.4
2.0
V/mo
Supply Rejection
V
CC
= 4 to 18V
94
120
dB
V
CC
= 4 to 18V
1
20
V/V
BIAS CURRENT
Input Bias Current
15
80
nA
OFFSET CURRENT
Input Offset Current
10
75
nA
IMPEDANCE
Common-Mode
2 || 2.5
G
|| pF
VOLTAGE RANGE
Common-Mode Input Range
11
12.3
V
Common-Mode Rejection
V
IN
=
11VDC
100
122
dB
OPEN-LOOP VOLTAGE GAIN, DC
R
L
2k
117
124
dB
R
L
1k
124
dB
FREQUENCY RESPONSE
Gain-Bandwidth Product
(5)
OPA27
5
(6)
8
MHz
OPA37
45
(6)
63
MHz
Slew Rate
(5)
V
O
=
10V,
R
L
= 2k
OPA27, G = +1
1.7
(6)
1.9
V/
s
OPA37, G = +5
11
(6)
11.9
V/
s
Settling Time, 0.01%
OPA27, G = +1
25
s
OPA37, G = +5
25
s
RATED OUTPUT
Voltage Output
R
L
2k
12
13.8
V
R
L
600
10
12.8
V
Output Resistance
DC, Open Loop
70
Short Circuit Current
R
L
= 0
25
60
(6)
mA
POWER SUPPLY
Rated Voltage
15
VDC
Voltage Range,
Derated Performance
4
22
VDC
Current, Quiescent
I
O
= 0mADC
3.3
5.7
mA
TEMPERATURE RANGE
Specification
40
+85
C
Operating
40
+85
C
NOTES: (1) Measured with industry-standard noise test circuit (Figures 1 and 2). Due to errors introduced by this method, these current noise specifications should
be used for comparison purposes only. (2) Offset voltage specification are measured with automatic test equipment after approximately 0.5 seconds from power turn-
on. (3) Unnulled or nulled with 8k
to 20k
potentiometer. (4) Long-term voltage offset vs time trend line does not include warm-up drift. (5) Typical specification only
on plastic package units. Slew rate varies on all units due to differing test methods. Minimum specification applies to open-loop test. (6) This parameter guaranteed by
design.
OPA27, OPA37
3
SBOS135A
www.ti.com
OPA27G
OPA37G
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
INPUT VOLTAGE
(1)
Input Offset Voltage
48
220
(3)
V
Average Drift
(2)
T
A MIN
to T
A MAX
0.4
1.8
(3)
V/
C
Supply Rejection
V
CC
= 4.5 to 18V
V
CC
= 4.5 to 18V
90
(3)
122
dB
BIAS CURRENT
Input Bias Current
21
150
(3)
nA
OFFSET CURRENT
Input Offset Current
E, F, G
20
135
(3)
nA
VOLTAGE RANGE
Common-Mode Input Range
10.5
(3)
11.8
V
Common-Mode Rejection
V
IN
=
11VDC
96
(3)
122
dB
OPEN-LOOP GAIN, DC
Open-Loop Voltage Gain
R
L
2k
113
(3)
120
dB
RATED OUTPUT
Voltage Output
R
L
= 2k
11.0
(3)
13.4
V
Short Circuit Current
V
O
= 0VDC
25
mA
TEMPERATURE RANGE
Specification
40
+85
C
NOTES: (1) Offset voltage specification are measured with automatic test equipment after approximately 0.5s from power turn-on. (2) Unnulled or nulled with 8k
to
20k
potentiometer. (3) This parameter guaranteed by design.
SPECIFICATIONS
At V
CC
=
15V and 40
C
T
A
+25
C, unless otherwise noted.
OPA27, OPA37
4
SBOS135A
www.ti.com
Top View
CONNECTION DIAGRAMS
1
2
3
4
5
6
7
8
Offset Trim
+V
CC
In
+In
V
CC
Output
NC
Offset Trim
ABSOLUTE MAXIMUM RATINGS
Supply Voltage ...................................................................................
22V
Internal Power Dissipation
(1)
....................................................... 500mW
Input Voltage .....................................................................................
V
CC
Output Short-Circuit Duration
(2)
................................................. Indefinite
Differential Input Voltage
(3)
.............................................................
0.7V
Differential Input Current
(3)
...........................................................
25mA
Storage Temperature Range .......................................... 55
C to +125
C
Operating Temperature Range ......................................... 40
C to +85
C
Lead Temperature:
P (soldering, 10s) ....................................................................... +300
C
U (soldering, 3s) ......................................................................... +260
C
NOTES: (1) Maximum package power dissipation versus ambient tempera-
ture. (2) To common with
V
CC
= 15V. (3) The inputs are protected by back-
to-back diodes. Current limiting resistors are not used in order to achieve low
noise. If differential input voltage exceeds
0.7V, the input current should be
limited to 25mA.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper han-
dling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation
to complete device failure. Precision integrated circuits may
be more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
SPECIFIED
PACKAGE
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
DRAWING
(1)
RANGE
MARKING
NUMBER
MEDIA, QUANTITY
OPA27
DIP-8
P
40
C to +85
C
OPA27GP
OPA27GP
Rail, 50
OPA27
SO-8
D
40
C to +85
C
OPA27U
OPA27GU
Rail, 100
"
"
"
"
"
OPA27GU/2K5
Tape and Reel, 2500
OPA37
DIP-8
P
40
C to +85
C
OPA37GP
OPA37GP
Rail, 50
OPA37
SO-8
D
40
C to +85
C
OPA37U
OPA37GU
Rail, 100
"
"
"
"
"
OPA37GU/2K5
Tape and Reel, 2500
NOTE: (1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
PACKAGE/ORDERING INFORMATION
OPA27, OPA37
5
SBOS135A
www.ti.com
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C,
V
CC
=
15VDC, unless otherwise noted.
INPUT OFFSET VOLTAGE WARM-UP DRIFT
Time From Power Turn-On (min)
0
+10
+5
0
5
10
Offset Voltage Change (V)
1
2
3
4
5
6
G
TO-99
INPUT OFFSET VOLTAGE CHANGE
DUE TO THERMAL SHOCK
Time From Thermal Shock (min)
1
+20
+10
0
10
20
Offset Voltage Change (V)
0
+1
+2
+3
+4
+5
+25C
+70C
T = +25C to T = +70C
Fluid Bath
A
A
INPUT VOLTAGE NOISE vs NOISE BANDWIDTH
(0.1Hz to Indicated Frequency)
Noise Bandwidth (Hz)
100
1k
10k
100k
10
1
0.1
0.01
Voltage Noise (Vrms)
R = 0
S
TOTAL INPUT VOLTAGE NOISE SPECTRAL DENSITY
vs SOURCE RESISTANCE
Source Resistance ( )
100
1k
10k
100
80
60
10
8
6
40
20
4
2
1
Voltage Noise (nV/
Hz)
-
+
R
1
R
1
R = 2 R
1
x
SOURCE
Resistor Noise Only
1kHz
10Hz
VOLTAGE NOISE SPECTRAL DENSITY
vs SUPPLY VOLTAGE
5
4
3
2
1
0
Supply Voltage (V )
CC
5
10
15
20
Voltage Noise (nV/
Hz)
1kHz
10Hz
Voltage Noise (nV/
Hz)
VOLTAGE NOISE SPECTRAL DENSITY
vs TEMPERATURE
5
4
3
2
1
75
50
25
0
+25
+50
+75
+100
+125
Ambient Temperature (C)
10Hz
1kHz
OPA27, OPA37
6
SBOS135A
www.ti.com
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C,
V
CC
=
15VDC, unless otherwise noted.
INPUT CURRENT NOISE SPECTRAL DENSITY
Current Noise (pA/
Hz)
10
8
6
4
2
1
0.8
0.6
0.4
0.2
0.1
10
100
1k
10k
This industry-standard equation
is inaccurate and these figures should
be used for comparison purposes only!
Current Noise Test Circuit
I
n =
(e
no
)
2
(130nV)
2
1M 100
x
DUT
100k
500k
500k
10k
e
no
Frequency (Hz)
Warning:
INPUT VOLTAGE NOISE SPECTRAL DENSITY
1
10
100
1k
Frequency (Hz)
Voltage Noise (nV/
Hz)
10
8
6
4
2
0
OPEN-LOOP FREQUENCY RESPONSE
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
100M
140
120
100
80
60
40
20
0
Voltage Gain (dB)
OPA27
OPA37
BIAS AND OFFSET CURRENT vs TEMPERATURE
Ambient Temperature (C)
75
50
25
0
+25
+50
+75
+100
+125
Absolute Bias Current (nA)
20
15
10
5
0
Absolute Offset Current (nA)
20
15
10
5
0
Bias
Offset
OPA27 CLOSED-LOOP VOLTAGE GAIN AND
PHASE SHIFT vs FREQUENCY (G = 100)
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
100M
Voltage Gain (dB)
Phase Shift (degrees)
50
40
30
20
10
0
10
20
0
45
90
135
180
225
Gain
OPA37 CLOSED-LOOP VOLTAGE GAIN AND
PHASE SHIFT vs FREQUENCY (G = 100)
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
100M
Voltage Gain (dB)
Phase Shift (degrees)
50
40
30
20
10
0
10
20
0
45
90
135
180
225
Gain
G = 5
OPA27, OPA37
7
SBOS135A
www.ti.com
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C,
V
CC
=
15VDC, unless otherwise noted.
COMMON-MODE REJECTION vs FREQUENCY
140
120
100
80
60
40
20
0
Common-Mode Rejection (dB)
Frequency (Hz)
1
10
100
1k
10k
100k
1M
10M
OPA37
OPA27
OPEN-LOOP VOLTAGE GAIN vs SUPPLY VOLTAGE
130
125
120
115
Voltage Gain (dB)
5
Supply Voltage (V )
CC
10
15
20
25
R = 2k
L
R = 600
L
OPEN-LOOP VOLTAGE GAIN vs TEMPERATURE
Voltage Gain (dB)
135
130
125
120
115
Ambient Temperature (C)
75
50
25
0
+25
+50
+75
+100
+125
R
L
= 2k
SUPPLY CURRENT vs SUPPLY VOLTAGE
6
5
4
3
2
1
0
Supply Current (mA)
0
Supply Voltage (V )
CC
5
10
15
20
+25C
+125C
55C
COMMON-MODE INPUT VOLTAGE RANGE
vs SUPPLY VOLTAGE
+15
+10
+5
0
5
10
15
Common-Mode Range (V)
0
Supply Voltage (V )
CC
5
10
15
20
T = +25C
A
T = +125C
A
T = 55C
A
T = +25C
A
T = +125C
A
T = 55C
A
POWER SUPPLY REJECTION vs FREQUENCY
140
120
100
80
60
40
20
0
Power Supply Rejection (dB)
Frequency (Hz)
1
10
100
1k
10k
100k
1M
10M
OPA27
V
CC
+V
CC
OPA27, OPA37
8
SBOS135A
www.ti.com
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C,
V
CC
=
15VDC, unless otherwise noted.
OPA27 SMALL SIGNAL TRANSIENT RESPONSE
Time (s)
+60
+40
+20
0
20
40
60
Output Voltage (mV)
0
1
2
A = +1
C = 15pF
VCL
L
0.5
1.5
2.5
OPA37 SMALL SIGNAL TRANSIENT RESPONSE
Time (s)
+60
+40
+20
0
20
40
60
Output Voltage (mV)
0.2
0.4
0.6
A = +5
C = 25pF
V
L
0
0.8
1.0
1.2
OPA27 LARGE SIGNAL TRANSIENT RESPONSE
Time (s)
+6
+4
+2
0
2
4
6
Output Voltage (V)
2
4
6
0
8
10
12
A = +1
VCL
OPA37 LARGE SIGNAL TRANSIENT RESPONSE
Time (s)
+15
+10
+5
0
5
10
15
Output Voltage (V)
1
2
3
0
4
5
6
A = +5
V
OPA27, OPA37
9
SBOS135A
www.ti.com
APPLICATIONS INFORMATION
OFFSET VOLTAGE ADJUSTMENT
The OPA27 and OPA37 offset voltages are laser-trimmed
and require no further trim for most applications. Offset
voltage drift will not be degraded when the input offset is
nulled with a 10k
trim potentiometer. Other potentiometer
values from 1k
to 1M
can be used, but V
OS
drift will be
degraded by an additional 0.1
V/
C to 0.2
V/
C. Nulling
large system offsets by use of the offset trim adjust will
degrade drift performance by approximately 3.3
V/
C per
millivolt of offset. Large system offsets can be nulled
without drift degradation by input summing.
The conventional offset voltage trim circuit is shown in
Figure 3. For trimming very small offsets, the higher reso-
lution circuit shown in Figure 4 is recommended.
The OPA27 and OPA37 can replace 741-type operational
amplifiers by removing or modifying the trim circuit.
THERMOELECTRIC POTENTIALS
The OPA27 and OPA37 are laser-trimmed to microvolt-
level input offset voltages, and for very-low input offset
voltage drift.
Careful layout and circuit design techniques are necessary to
prevent offset and drift errors from external thermoelectric
potentials. Dissimilar metal junctions can generate small
EMFs if care is not taken to eliminate either their sources
(lead-to-PC, wiring, etc.) or their temperature difference
(see Figure 11).
Short, direct mounting of the OPA27 and OPA37 with close
spacing of the input pins is highly recommended. Poor
layout can result in circuit drifts and offsets which are an
order of magnitude greater than the operational amplifier
alone.
FIGURE 1. 0.1Hz to 10Hz Noise Test Circuit.
FIGURE 2. Low Frequency Noise.
DUT
OPA111
100k
2k
4.7F
Voltage Gain
Total = 50,000
10
NOTE: All capacitor values are for nonpolarized capacitors only.
0.1F
Scope
x1
R
IN
= 1M
100k
24.3k
4.3k
110k
0.1F
22F
2.2F
0.1Hz TO 10Hz NOISE
1s/div
40nv/div
OPA27, OPA37
10
SBOS135A
www.ti.com
COMPENSATION
Although internally compensated for unity-gain stability, the
OPA27 may require a small capacitor in parallel with a
feedback resistor (R
F
) which is greater than 2k
. This
capacitor will compensate the pole generated by R
F
and C
IN
and eliminate peaking or oscillation.
INPUT PROTECTION
Back-to-back diodes are used for input protection on the
OPA27 and OPA37. Exceeding a few hundred millivolts
differential input signal will cause current to flow, and without
external current limiting resistors, the input will be destroyed.
Accidental static discharge, as well as high current, can dam-
age the amplifier's input circuit. Although the unit may still be
functional, important parameters such as input offset voltage,
drift, and noise may be permanently damaged, as will any
precision operational amplifier subjected to this abuse.
Transient conditions can cause feedthrough due to the
amplifier's finite slew rate. When using the OP-27 as a unity-
gain buffer (follower) a feedback resistor of 1k
is recom-
mended, as shown in Figure 6.
NOISE: BIPOLAR VERSUS FET
Low-noise circuit design requires careful analysis of all
noise sources. External noise sources can dominate in many
cases, so consider the effect of source resistance on overall
operational amplifier noise performance. At low source
impedances, the lower voltage noise of a bipolar operational
amplifier is superior, but at higher impedances the high
current noise of a bipolar amplifier becomes a serious
liability. Above about 15k
, the Burr-Brown OPA111 low-
noise FET operational amplifier is recommended for lower
total noise than the OPA27, as shown in Figure 5.
FIGURE 3. Offset Voltage Trim.
FIGURE 5. Voltage Noise Spectral Density Versus Source
Resistance.
FIGURE 6. Pulsed Operation.
FIGURE 8. Unity-Gain Inverting Amplifier.
FIGURE 7. Low-Noise RIAA Preamplifier.
FIGURE 4. High Resolution Offset Voltage Trim.
OPA27
Output
Input
1k
1k
2
3
6
OPA37
Output
97.6k
G
40dB at 1kHz.
Metal film resistors.
Film capacitors.
R
L
and C
L
per cartridge
manufacturer's
recommendations.
100
2
3
6
0.03F
0.01F
7.87k
1F
20k
R
L
Moving
Magnet
Cartridge
C
L
OPA27
Output
1.9V/s
R
F
1k
Input
+
100
1k
10k
100k
1M
10M
1k
100
10
1
Voltage Noise Spectral Density, E
O
Typical at 1kHz (nV/
Hz)
OPA111 + Resistor
OPA27 + Resistor
Source Resistance, R
S
(
)
E
O
R
S
E
O
=
e
n
2
+ (i
n
R
S
)
2
+ 4kTR
S
F
O
= 1kHz
Resistor Noise Only
OPA27 + Resistor
OPA111 + Resistor
Resistor Noise Only
1
2
3
4
6
280V Typical Trim Range
NOTE: (1) 1k
Trim Potentiometer.
+V
CC
V
CC
OPA27/37
7
8
4.7k
4.7k
(1)
1
2
3
4
6
4mV Typical Trim Range
NOTE: (1) 10k
to 1M
Trim Potentiometer
(10k
Recommended).
+V
CC
V
CC
OPA27/37
7
8
(1)
OPA27, OPA37
11
SBOS135A
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
316k
4.99k
G
50dB at 1kHz.
Metal film resistors.
Film capacitors.
R
L
and C
L
per head
manufacturer's
recommendations.
100
2
3
6
0.01
F
1
F
20k
R
L
Magnetic Tape Head
C
L
OPA37
Output
Input
1k
1k
2
3
6
500pF
250
10k
0.5
V
0.5
V
0.5
V
0.5
V
5
V
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 = 10
6
10
OPA27, OPA37
12
SBOS135A
www.ti.com
FIGURE 12. Low Noise Instrumentation Amplifier.
FIGURE 13. Hydrophone Preamplifier.
FIGURE 14. Long-Wavelength Infrared Detector Amplifier.
FIGURE 15. High Performance Synchronous Demodulator.
Output
4.99k
D2
D1
DG188
TTL
In
S1
S2
9.76k
500
Balance
Trim
OPA27
2
3
1
8
6
20pF
10k
1k
4.75k
Offset
Trim
4.75k
+V
CC
Input
TTL INPUT
"1"
"0"
GAIN
+1
1
Output
NOTE: Use metal film resistors
and plastic film capacitor. Circuit
must be well shielded to achieve
low noise.
Responsivity
2.5 x 10
4
V/W
Output Noise
30
Vrms, 0.1Hz to 10Hz
Dexter 1M
Thermopile
Detector
100
100k
OPA27
2
3
6
0.1
F
OPA37
Output
1k
2k
EDO 6166
Transducer
Frequency Response
1kHz to 50kHz
2
3
6
1M
200
500pF
0.1F
Output
OPA37
2
3
6
OPA37
3
2
6
6
1
5
3
2
Burr-Brown INA105
Differential Amplifier
Input Stage Gain = 1 + 2R
F
/R
G
+In
In
R
G
101
R
F
5k
R
F
5k
Gain = 100
Bandwidth
500kHz
For Gain = 1000, use INA106 differential amplifier.
25k
25k
25k
25k
OPA27, OPA37
13
SBOS135A
www.ti.com
FIGURE 16. Ultra-Low Noise "N"-Stage Parallel Amplifier.
2k
Gain = 1010V/V
Full Power Bandwidth
180kHz
Gain Bandwidth
500MHz
Equivalent Noise Resistance
50
Signal-to-Noise Ratio
N
since amplifier noise is
uncorrelated.
2k
6
2
3
20
6
2
3
6
2
3
2k
6
2
3
6
2
3
OPA37
OPA37
OPA37
OPA37
OPA37
6
Output
2
3
OPA37
N = 10 Each OPA37EZ
2k
2k
2k
2k
2k
20
2k
20
2k
20
2k
20
Input
OPA27, OPA37
14
SBOS135A
www.ti.com
OPA37
Output
Input
1k
2
3
6
500pF
250
5V
5
s
R
S
= 50
+10V
0V
Output
10V
FIGURE 18. High Slew Rate Unity-Gain Buffer.
FIGURE 17. Unity-Gain Buffer.
OPA27
Output
Input
1k
2
3
6
5V
5
s
R
S
= 50
+10V
0V
Output
10V
FIGURE 20. Balanced Pyroelectric Infrared Detector.
OPA27
Output
10k
100
100
F/20V
Tantalum
2
3
6
+
+
1
3
2
10k
10k
10
F/20V
Siemens LHI 948
+15V
FIGURE 19. RF Detector and Video Amplifier.
OPA37
Video
Output
20k
200
VIRTEC V1000
Planar Tunnel
Diode
2
3
6
0.01F
50
Input
200
RFC
500pF
FIGURE 21. Magnetic Tachometer.
OPA27
Output
0
+
4.8V
1k
2
3
Airpax
Magnetic
Pickup
f
OUT
RPM X N
Where N = Number of Gear Teeth
6
PACKAGING INFORMATION
ORDERABLE DEVICE
STATUS(1)
PACKAGE TYPE
PACKAGE DRAWING
PINS
PACKAGE QTY
OPA27GP
ACTIVE
PDIP
P
8
50
OPA27GU
ACTIVE
SOIC
D
8
100
OPA27GU/2K5
ACTIVE
SOIC
D
8
2500
OPA37GP
ACTIVE
PDIP
P
8
50
OPA37GU
ACTIVE
SOIC
D
8
100
OPA37GU/2K5
ACTIVE
SOIC
D
8
2500
(1) The marketing status values are defined as follows:
ACTIVE: Product device recommended for new designs.
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in
a new design.
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.
OBSOLETE: TI has discontinued the production of the device.
PACKAGE OPTION ADDENDUM
www.ti.com
9-Oct-2003
MECHANICAL DATA
MPDI001A JANUARY 1995 REVISED JUNE 1999
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
P (R-PDIP-T8)
PLASTIC DUAL-IN-LINE
8
4
0.015 (0,38)
Gage Plane
0.325 (8,26)
0.300 (7,62)
0.010 (0,25) NOM
MAX
0.430 (10,92)
4040082/D 05/98
0.200 (5,08) MAX
0.125 (3,18) MIN
5
0.355 (9,02)
0.020 (0,51) MIN
0.070 (1,78) MAX
0.240 (6,10)
0.260 (6,60)
0.400 (10,60)
1
0.015 (0,38)
0.021 (0,53)
Seating Plane
M
0.010 (0,25)
0.100 (2,54)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Falls within JEDEC MS-001
For the latest package information, go to http://www.ti.com/sc/docs/package/pkg_info.htm
MECHANICAL DATA
MSOI002B JANUARY 1995 REVISED SEPTEMBER 2001
1
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
D (R-PDSO-G**)
PLASTIC SMALL-OUTLINE PACKAGE
8 PINS SHOWN
8
0.197
(5,00)
A MAX
A MIN
(4,80)
0.189
0.337
(8,55)
(8,75)
0.344
14
0.386
(9,80)
(10,00)
0.394
16
DIM
PINS **
4040047/E 09/01
0.069 (1,75) MAX
Seating Plane
0.004 (0,10)
0.010 (0,25)
0.010 (0,25)
0.016 (0,40)
0.044 (1,12)
0.244 (6,20)
0.228 (5,80)
0.020 (0,51)
0.014 (0,35)
1
4
8
5
0.150 (3,81)
0.157 (4,00)
0.008 (0,20) NOM
0
8
Gage Plane
A
0.004 (0,10)
0.010 (0,25)
0.050 (1,27)
NOTES: A. All linear dimensions are in inches (millimeters).
B. This drawing is subject to change without notice.
C. Body dimensions do not include mold flash or protrusion, not to exceed 0.006 (0,15).
D. Falls within JEDEC MS-012
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