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OPA392 Operational Amplifier Data: low noise, input bias, & offset voltage

Key data for the OPA392 low offset, low noise, low input bias operational amplifier:- key electrical parameters, performance, features, pinout, package type and many other key datasheet details.

The OPA392 and others in its family of operational amplifiers provide ultra-low offset, offset drift, and input bias current with rail-to-rail input and output operation.

In addition to this they provide precision dc accuracy, the ac performance optimized for low noise and fast-settling transient response.

This means that the OPA392 along with its other family members, OPA2392, and OPA4392 an excellent choice for driving high-precision analog-to-digital converters (ADCs) or buffering the output of high-resolution, digital-to-analog converters (DACs).

Key details and performance parameters for the OPA392 operational amplifier.

OPA392 op-amp datasheet parameters & data
Parameters	Details
Op-amp type	Low offset, low noise, low input bias
Package type	5 pin SOT-23 and SC70
Max supply voltage (v)	6V single, ±3V dual, recommended operating 1.7 to 5.5V total
Power dissipation (mW)
Max differential input (V)
Junction temperature (°C)	150
Input offset voltage	±125µV
Input offset current (nA)	± 0.01 typ, ±0.8pA max
Input bias current (nA)	± 0.01 typ, ±0.8pA max
Input resistance (MΩ)
Input voltage range (V)
Open loop voltage gain	110min, 132typ dependent upon conditions
Output voltage swing (V)
Common mode rejection ratio, CMMR	75 typ, max 120 dB
Supply voltage rejection ratio, PSRR	±30µV/V
Gain bandwidth product	13MHz
Slew rate	4.5V/µs falling, 3.5V/µs
Quiescent supply current	1.22 mA typical, 1.4 mA max.

Outline & pinout:

Explanation of operational amplifier parameters

Parameter	Explanation
Max supply voltage	This is the maximum voltage that should be applied to the operational amplifier. As many of them operate on dual supplies this may be given as ± representing the maximum for both the positive and negative supplies.
Power dissipation	This is the maximum power dissipation permissable for the device.
Maximum differential input	This is the maximum difference that may exist between the two inputs, -IN and +IN. It can normally be in either sense so it is stated as ± xxV.
Junction temperature T_J	This is the maximum temperature that the actual IC chip can operate at, expressed in °C. Remember the ambient temperature will be much less than the actual silicon temperature.
Input offset voltage V_OS	This is the small DC voltage difference that must be applied between the two input terminals to make the output voltage zero, even when the input signal is zero.
Input offset current I_OS	This is equal to the difference between the input bias current at the non-inverting terminal (IB+) minus the input bias current at the inverting (IB- ) terminal of the amplifier.

Parameter	Explanation
Input bias current	This is the DC currents flowing into or out of the amplifier's input pins to create a defined operating point during normal operation.
Input resistance	This is the load resistance resulting from the operational amplifier as seen by a preceding stage.
Input voltage range	The op-amp input voltage range, also known as the common-mode voltage range (CMVR), is the range of voltages that can be applied to the op-amp's inputs while maintaining linear and predictable operation.
Large signal voltage gain
Output voltage swing
Common mode rejection ratio, CMMR
Supply rejection ratio
Slew rate
Supply current
Power consumption

These are the main operational amplifier parameters that have been included in our list. There are others, but these help quantify the main elements of the performance of the regulator, but are normally deemed to be less important.

Read more about . . . . Op-Amp Specifications & Parameters.

Please note, that the data given is the best estimate we can give within a tabulated summary of this nature. Parameters also vary between manufacturers. Electronics Notes cannot accept any responsibility for errors, inaccuracies, etc, although we do endevaour to ensure the data is as accurate as possible.

Notes and supplementary information

• Availability & sources

The OPA392 is available from a number of stockists and electronic component distributors many of which are given in the table below.

OPA392 Component Distributor, Stock and Pricing

• Further details

The OPAx392 series of op-amps including the OPA392 incorporate the TI e-trim operational amplifier technology and this enables these chips to achieve ultra-low offset voltage and offset voltage drift without any input chopping or auto-zero techniques.

This technique enables ultra-low input bias current for a huge variety of applications including sensor inputs or photodiode current-to-voltage measurements. This creates high-performance transimpedance stages for optical modules or medical instrumentation and other applications.