OP37G

Features:

• Maximum Equivalent Input Noise Voltage:
3.8 nV//Hz at 1 kHz
5.5 nV//Hz at 10 kHz
• Very Low Peak-to-Peak Noise Voltage at
0.1 Hz to 10 Hz . . . 80 nV Typ
• Low Input Offset Voltage . . . 25 V Max
• High Voltage Amplification . . . 1 V/V Min
Feature of OP37 Series:
• Minimum Slew Rate . . . 11 V/s




Pinout








Specifications

Supply voltage, V_CC+ (see Note 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 V
Supply voltage, V_CC (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 V
Input voltage, V_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±V_CC
Duration of output short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited
Differential input current (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range: OP27A, OP27C, OP37A, OP37C . . . . . . . . . . . . . . . 55°C to 125°C
OP27E, OP27G, OP37E, OP37G . . . . . . . . . . . . . . . 25°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG or FK package . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds : P package . . . . . . . . . . . . . . . . . . . 260°C




Description

The OP27 and OP37 operational amplifiers combine outstanding noise performance with excellent precision and high-speed specifications. The wideband noise is only 3 nV//Hz and with the 1/f noise corner at 2.7 Hz, low noise is main-tained for all low-frequency applications.

The outstanding characteristics of the OP27 and OP37 make these devices excellent choices for low-noise amplifier applications requiring precision performance and reliability. Additionally, the OP37 is free of latch-up in high-gain,
large-capacitive-feedback configurations.

The OP27 series is compensated for unity gain. The OP37 series is decompensated for increased bandwidth and slew rate and is stable down to a gain of 5.

The OP27A, OP27C, OP37A, and OP37C are characterized for operation over the full military temperature range of 55°C to 125°C. The OP27E, OP27G, OP37E, and OP37G are characterized for operation from 25°C to 85°C.

The OP37G has the following features including (1)Very Low Peak-to-Peak Noise Voltage at 0.1 Hz to 10 Hz is 80 nV Typ;(2)Low Input Offset Voltage is 25 V Max;(3)High Voltage Amplification is 1 V/V Min.The OP37G operational amplifiers combine outstanding noise performance with excellent precision and high-speed specifications.The wideband noise is only 3 nV//Hz and with the 1/f noise corner at 2.7 Hz, low noise is maintained for all low-frequency applications.

The device should be warmed up for at least five minutes. As the operational amplifier warms up, the offset voltage typically changes 4 V due to the chip temperature increasing from 10°C to 20°C starting from the moment the power supplies are turned on. In the 10-s measurement interval, these temperature-induced effects can easily exceed tens of nanovolts.The frequency response of this noise tester indicates that the 0.1-Hz corner is defined by only one zero. Because the time limit acts as an additional zero to eliminate noise contributions from the frequency band below 0.1 Hz,the test time to measure 0.1-Hz to 10-Hz noise should not exceed 10 seconds.Unless proper care is exercised,thermoelectric effects caused by temperature gradients across dissimilar metals at the contacts to the input terminals can exceed the inherent temperature coefficient mVIO of the amplifier. Air currents should be minimized, package leads should be short, and the two input leads should be close together and at the same temperature.

Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant information to verify, before placing orders, that information being relied on is current and complete. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those pertaining to warranty, patent infringement, and limitation of liability.