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MAX40023 Operational Amplifier, Op-Amp Data
Data for the MAX40023 low noise, low power, low bias current operational amplifier including electrical parameters, performance, features, pinout, package type etc.
The MAX40023 features a combination of low input current, low noise as well as rail-to-rail input and output voltage swing, low supply voltage, and low-power operation.
High-impedance inputs on the MAX40023 makes it ideal for use as transimpedance amplifiers and high-impedance sensor interface front-ends in medical and industrial applications.
The amplifier offers an ultra-low input bias current of around 1pA, a low quiescent current of 17µA, low 32nV√Hz input noise voltage, internal EMI rejection, power shutdown mode and it can operate from a supply voltage between 1.6V and 3.6V.
Key details and performance parameters for the MAX40023 operational amplifier.
| MAX40023 op-amp datasheet parameters & data |
|
|---|---|
| Parameters | Details |
| Op-amp type | Low noise, low bias current, low power |
| Package type | 6WLP, 6-SOT23 |
| Max supply voltage (v) | 1.6 - 3.6V |
| Input common mode range (VCM) | -0.1 min, VDD +0.1V |
| Open loop gain | 90dB minimum, 100dB typical |
| Input offset voltage VOS | 100µV typ, 400µV max |
| Input offset current (nA) | 0.5pA |
| Input bias current (nA) | 0.1 - 5pA for temperatures 0°C ≤ T ≤ 50°C |
| Input resistance (MΩ) | 15000 GΩ typical |
| Short circuit current ISC | 10mA |
| Output voltage swing high VOH | VDD - VOUT = 10mV |
| Output voltage swing low VOL | VOUT - GND = 10mV |
| Common mode rejection ratio, CMRR | 75dB min 100dB typ |
| Supply voltage rejection ratio PSRR | 84dB min, 100dB typical |
| Gain bandwidth product | 80kHz |
| Slew rate | 0.02 V/µs |
| Input voltage noise (0.1Hz to 10Hz) | 1.5 µV/√Hz |
| Supply current IDD | 17µA typ 20µA max for temperatures 0°C ≤ T ≤ 50°C |
| Primary manufacturer | Maxim - now part of Analog Devices Inc |
Outline & pinout:
Note: the most commonly stocked type is the MAX40023ANT which is housed in the 6WLP package and the other type is the MAX40023AUT which is in the SOT-23-6L.
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 TJ | 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 VOS | 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 IOS | 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.
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 MAX40023 is available from a number of stockists and electronic component distributors many of which are given in the table below.
MAX40023 Component Distributor, Stock and Pricing
• Further details
The MAX40023 is te single version of this op-amp, and there is a dual version MAX40024 which is also available.
This device is available in the more popular 6WLP package that is detailed above, but there is also a SOT23-6L version that is less widely stocked.
The high performance and low power make this op-amp ideal for applications including wearable medical devices, industrail sensors, and many battery powered devices.
• Pinout summary
The table below outlines the pinout for the MAX40023.
| Pinout for MAX40023 |
||
|---|---|---|
| Function | WLP Package | SOT23 Package |
| Non-inverting input IN+ | A1 | 3 |
| Ground GND | B1 | 2 |
| Inverting input IN- | A2 | 4 |
| Positive supply VDD | B3 | 6 |
| Output OUT | A3 | 1 |
| Shutdown SHDN with a bar | B2 | 5 |
Written by Ian Poole .
Experienced electronics engineer and author.
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