ADA4523-1

36 V, Low Noise, Zero Drift Op Amp

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Recommended for New Designs

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Overview

Features and Benefits
Product Details

Features and Benefits

Supply voltage range: 4.5 V to 36 V
Offset voltage: ±4 µV maximum at 5 V
Offset voltage drift: 0.01 µV/°C maximum at 5 V
Input noise

Voltage: 88 nV p-p from 0.1 Hz to 10 Hz typical
Spectral density voltage: 4.2 nV/√Hz typical at 1 kHz

Rail-to-rail output
Unity-gain stable
GBP: 5 MHz typical
Slew rate: 1.8 V/µs typical falling

PSRR: 168 dB typical at V_S = 4.5 V to 36 V
Open-loop voltage gain: 160 dB typical at V_OUT = −14.75 V to +14.75 V, R_L = 10 kΩ, V_S = 30 V
CMRR: 160 dB typical at V_CM = −15.1 V to +13.5 V,V_S= 30V
Integrated EMI filters
Shutdown mode
Ground sense
Available in 8-lead SOIC, 8-lead MSOP, and 8-lead LFCSP

Product Details

The ADA4523-1 is a high voltage, low noise, zero drift op amp that offers precision dc performance over a wide supply range of 4.5 V to 36 V. Offset voltage and 1/f noise are suppressed, allowing this op amp to achieve a maximum offset voltage of ±4 µV and a 0.1 Hz to 10 Hz input noise voltage of 88 nV p-p typical.The self calibrating circuitry of the ADA4523-1 results in low offset voltage drift with temperature (0.01 µV/°C maximum) and zero drift over time. Additionally, the ADA4523-1 uses on-chip filtering to achieve high immunity to electromagnetic interference (EMI).

Wide supply range, combined with low noise, low offset, 168 dB power supply rejection ratio (PSRR), and 160 dB common-mode rejection ratio (CMRR), make the ADA4523-1 well suited for high dynamic range test, measurement, and instrumentation systems.

Applications

High resolution data acquisition
Reference buffering
Test and measurement
Electronic scales
Thermocouple amplifiers
Strain gages
Low-side current sense

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Product Lifecycle Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (2)

EVAL-ADA4523-1

Evaluating the ADA4523-1 36 V, Low Noise, Zero Drift, Operational Amplifier

AD-ACEVSECRDSET-SL

Type 2 EVSE 3.6 kW Charging Cable

EVAL-ADA4523-1

View Detailed Evaluation Kit Information

The EVAL-ADA4523-1BRMZ allows the evaluation of the ADA4523-1 single-channel, 8‑lead, micro small outline package (MSOP) operational amplifier. The ADA4523-1 in this evaluation board is configured as a noninverting amplifier with a gain of 101. The ADA4523-1 has a typical gain bandwidth product of 4 MHz. When using a gain of 101, the useable bandwidth of the ADA4523-1 is limited to approximately 39.6 kHz. This limitation in bandwidth acts as a low-pass filter that rejects the artifacts generated by the 330 kHz internal chopping frequency of the ADA4523-1.

The EVAL-ADA4523-1BRMZ layout lessens the thermocouple effects of the trace and components that introduce offset voltages greater than the maximum offset voltage of the ADA4523-1 by carefully constructing the nodes connected to the inverting and noninverting inputs. The ADA4523-1 also features a shutdown mode for low power applications. Test point provisions for the SD and SD_COM pins are placed on the EVAL-ADA4523-1BRMZ to easily use the shutdown function.

The EVAL-ADA4523-1BRMZ mainly consists of 0805 sized resistors and capacitors to ensure simple installation except for the bypass capacitors. The 10 μF bypass capacitors (C1 and C4) have a 2220 package size to accommodate a higher voltage rating because the ADA4523-1 has a maximum supply of 55 V.

For full details on the ADA4523-1, see the ADA4523-1 data sheet, which must be consulted in conjunction with the user guide when using the EVAL-ADA4523-1BRMZ.

Features & Benefits

Full featured evaluation board for the ADA4523-1
Enables efficient prototyping
User defined circuit configuration
Edge mounted SMA connector provisions
Shutdown function for low power application

Resources

UG-1750: Evaluating the ADA4523-1 36 V, Low Noise, Zero Drift, Operational Amplifier (Rev. A)

PDF

592.18 K

AD-ACEVSECRDSET-SL

View Detailed Evaluation Kit Information

The AD-ACEVSECRDSET-SL is a complete Type 2 EVSE 3.6 kW charging cable solution, providing a reference design intended for evaluation and prototyping of electric vehicle (EV) charging systems.

The system includes a 3-channel isolated sigma-delta (Σ-Δ) ADC for voltage and current measurement on the single-phase power input and measurement of the relay voltage for solder contacts detection and relay state of health. Safe operation is enabled by the inclusion of a 6 mA DC / 30 mA rms RCD. Detection of overvoltage, undervoltage, overcurrent, overtemperature and EV diode presence is also available.

A MAX32655 low-power, ARM^® Cortex^®-M4 Microcontroller implements the logic for system control and communication with the EV over the control pilot interface. A programming and debugging interface are included. The MAX32655 Bluetooth 5.2 interface enables connectivity to external devices.

The design is accompanied by an open-source software stack and reference applications, enabling custom software development to start from a proven implementation validated to meet the applicable standards. An external programmer such as the MAX32625PICO MAXDAP Programming Adapter, or any other similar programmer supporting the SWD interface, is required to enable firmware programming and debug.

The system is designed to comply with the IEC61851 and IEC62752 standards.

APPLICATIONS

EV charging

Features & Benefits

Complete reference design for Type 2 EVSE Cordset (IC-CPD)
Power level from 2.3 kW up to 3.6 kW
Designed to comply with the applicable standards - IEC61851, IEC62752
Incorporates a 6 mA DC/30 mA rms RCD and a control pilot circuit
Stuck relay detection and relay state of health
Overtemperature detection
Integrated isolation
Reduced component count for cost optimization
Bluetooth 5.2 interface for connectivity to external devices
Open-source software stack to enable custom firmware development

Resources

Software

AD-ACEVSECRDSET-SL Software

Documentation & Resources

Data Sheet

ADA4523-1: 36 V, Low Noise, Zero Drift Op Amp Data Sheet (Rev. 0)
5/15/2020
PDF

User Guide

UG-1750: Evaluating the ADA4523-1 36 V, Low Noise, Zero Drift, Operational Amplifier (Rev. A)
5/15/2020
PDF

Video

Precision Narrow Bandwidth Signal Chain Solutions
10/20/2022

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice downloads and documentation

Models for the following parts are available in LTspice:

ADA4523-1

Design Tool

Analog Filter Wizard

Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

Analog Photodiode Wizard

Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

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Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

Part Number	Material Declaration	Reliability Data	Pin/Package Drawing	CAD Symbols, Footprints & 3D Models
ADA4523-1BCPZ	Material Declaration	Reliability Data	8-Lead LFCSP (3mm x 3mm x 0.75mm)	Ultra Librarian SamacSys
ADA4523-1BCPZ-RL7	Material Declaration	Reliability Data	8-Lead LFCSP (3mm x 3mm x 0.75mm)	Ultra Librarian SamacSys
ADA4523-1BRMZ	Material Declaration	Reliability Data	8-Lead MSOP	Ultra Librarian SamacSys
ADA4523-1BRMZ-RL7	Material Declaration	Reliability Data	8-Lead MSOP	Ultra Librarian SamacSys
ADA4523-1BRZ	Material Declaration	Reliability Data	8-Lead SOIC	Ultra Librarian SamacSys
ADA4523-1BRZ-RL7	Material Declaration	Reliability Data	8-Lead SOIC	Ultra Librarian SamacSys
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Evaluation Boards

Pricing displayed is based on 1-piece.

Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.