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OP27FZ-OP37CZ-OP37EJ-OP37GJ
Low-Noise Precision Operaional Amplifiers
193731; Rev J; 10/92
General Description
The OP27/OP37 precision operational amplifiers provide
lower noise and higher speed with the same input offset
and drift specifications as the OP07. Both parts have a
10W offset, 0.2;1V/°C drift, and 1.8 million gain. Coupled
with a Iow-voltage noise of 3.5nV/W at 10Hz and a low 1/f
noise corner frequency of 2.7Hz, the OP27/OP37 are op-
timized for accurate amplification of Iow-Ievel signals. The
OP27 features an 8MHz gain-bandwidth product and a
2.8Vhis slew rate. For applications demanding higher
speed, the OP37 has a 63MHz gain-bandwidth product,
17V/ps slew rate, and is stable at gains of five or more.
An output swing of t10V into 600n together with'low
distortion make the OP27/OP37 ideal for professional audio
applications.
For applications requiring greater precision or lower noise
than the OP27 or OP37, see the MAX427/MAX437 and
the MAX410/MAX412/MAX414 data sheets.
Applications
Low-Noise DC Amplifiers
Microphone Amplifiers
Precision Amplifiers
Tape-Head Preamplifiers
Thermocouple Amplifiers
Low-Level Signal Processing
Medical Instrumentation
Strain-Gauge Amplifiers
High-Accuracy Data Acquisition
Typical Application Circuit
MMI Al2ClLAIA]
Low-Noise Precision
Operational Amplifiers
Features
. 10W Input Offset Voltage
t 0.2pV/‘C Drift
. anvNE Input Noise Voltage (1 kHz)
. Banvw Nolse (0.1 Hz to 10Hz)
t 2.8V/us Slew Rate (OP27)
. 17V/us Slew Rate (0P3)
. 8MHz GaIn-Bandwldth Product (OP21)
. 63MHz Galn-Bandwldth Product (OP37)
Ordering Information
PART TEMP. RANGE PiN.PACKAGE
OP27EP tYC to +700 8 Plastic DIP
OP27FP 0°C to not 8 Plastic DIP
OP27GP -40"C to +850 8 Plastic DIP
OP27GS -4o'c to +85“C 8 so
OP27EZ -40°C to +850 8 CERDIP
OP27FZ -40°c to +85°C e CERDIP
op27ez -40°c to mm 8 CERDIP
OP27EJ -4o'c to +85''C e TO-99
OP27FJ -4o'c to +85''C _8I_o_-e_s_a m -
Pin Configurations
LOW-NOISE MICROPHONE PREAMPLIFIER
316k V 1009
IOPVIEW
IMPEDANCE lk . V
MICROPHONE BAL F E BAL
fir, IN- [E MAXIM El V+
LI- 30k OUTPUT 0P2
(2 500102000 IN. Ti. 0P37 El OUT
It- E E] MC.
fi_3 a M DlP/SO
RI R2 R4 =
x t 316k
Pin Configurations continued on last page,
MAXIM Maximintegrated Products 1
Call toll free f.tttttt.SStVatMttt for free samples or literature.
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0P2 7/OP3 7
Low-Noise Precision
Operational Amplifiers
ABSOLUTE MAXIMUM RATINGS
Supply Voltage -.-.$-.._FV__...lF.. 122V Operating Temperature Ranges:
Input Voltage (Note 1) ............................ 122V OP27/OP37EP/FP ....................... 0"C to +70'C
Output Short-Circuit Duration .................. Continuous oP27/OP37GUEiyE0lFZ/Fd .............. -40'C to +850
Differential InputVoltage (Note 2) .................. i0.7V OP27/OP37AUBUC., .................. -55“C to +125'C
Differential Input Current (Note 2) ................. t25mA Junction Temperature Range .............. -65'C to +150'C
Continuous Power Dissipation (TA = +70°C) Storage Temperature Range ............. -65'C to +150'C
Plastic DIP (derate 9.09mW/' C above +70°C) ...... 727mW Lead Temperature (soldering, 10 sec) ............. +300'C
SO (derate 5.88mWt' C above +70'C) ............ 471mW
CERDIP (derate 8.00mW/‘C above +70'C) ........ 640mW
TO-99 (derate 6.67mW/" C above +70'C) ......... 533mW
Note 1: For supply voltages less than I22V, the absolute maximum input voltage is equal to the supply voltage.
Note 2: OP27/OP37 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.
Stresses beyond those listed under "Absolute Maximum Ratings' may cause permanent damage to the device. These are stress ratings only. and runcltonal
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maxmum rating conditions for extended periods may affect device reliability,
ELECTRICAL CHARACTERISTICS
(Vs = A15V, TA = +25'C, unless otherwise noted.)
OP27A/E OP27B/F OP27C/G
PARAMETER SYMBOL commons OP3TAIE 0P37B/F 0P370/G UNITS
MIN TYP MAX MIN TYP MAX MIN TYP MAX
Input Offset Voltage (Note 3) Vos 10 25 20 60 30 100 pV
Long-Term Vos Stability
(Notes 4, 5) Vos/TIME 0.2 1.0 0.3 1.5 0.4 2.0 'IV/MO,
Input Bias Current la :10 140 112 ez 115 t80 nA
Input Offset Current Ios 7 35 9 50 12 75 nA
InputVoltage Range hm i110 $12.3 $11.0 112.3 i110 i123 V
Input Resistance -
Differential Mode (Note 6) RIN 1/3 6 0.94 5 0.7 4 Mn
Input Resistance -
Common Mode RINCM 3 2.5 2 en
Input Noise Voltage (Notes 5, 7 enp-p 0.1Hz to 10Hz 0.08 0.18 0.08 0.18 0.09 0.25 “VP
' . fo = 10Hz 3.5 5.5 3.5 5.5 3.8 8.0
ll tlt/i"""' Density en fo = 30Hz 3.1 4.5 3.1 4.5 3.3 5.6 nV/M
fo = 1kHz 3.0 3.8 3.0 3.8 3.2 4.5
fo = 10Hz 1.7 4.0 1.7 4.0 1.7
Input Noise-Current Density . -
(Notes 5, 8) . In fo - 30Hz IO 2.3 1.0 2.3 1.0 PA/4rrz
f0 = 1kHz 0.4 0.6 0.4 0.6 0.4 0.6
RL2e2d2,VO--k10V 1000 1800 1000 1800 700 1500
Large-Signal Voltage Gain Avo RL k Ikf2, V0 = A10V 800 1500 800 1500 400 1500 V/mV
, RL it 6000. V0 = tIV,
Vs = t4V (Note 5) 250 700 250 700 200 500
O t tV It s . V RLit 2en i120 113.8 t12.0t13.8 i11.5113.5 V
o a e n
u pu g WI g O RLZGOOQ 110.0 111.5 110.0 t11.5 11001115
2 MAXIM
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