Overview
Features and Benefits
- Low offset voltage: 2.5 μV maximum
- Low offset voltage drift: 0.015 μV/°C maximum
- Low noise
- 5.6 nV/√Hz at f = 1 kHz, AV = +100
- 97 nV p-p at f = 0.1 Hz to 10 Hz, AV = +100
- Open-loop gain: 130 dB minimum
- CMRR: 135 dB minimum
- PSRR: 130 dB minimum
- Unity-gain crossover: 4 MHz
- Gain bandwidth product: 3 MHz at AV = +100
- −3 dB closed-loop bandwidth: 6.2 MHz
- Single-supply operation: 2.2 V to 5.5 V
- Dual-supply operation: ±1.1 V to ±2.75 V
- Rail-to-rail input and output
- Unity-gain stable
Product Details
The ADA4528-1/ADA4528-2 are ultralow noise, zero-drift operational amplifiers featuring rail-to-rail input and output swing. With an offset voltage of 2.5 μV, offset voltage drift of 0.015 μV/°C, and typical noise of 97 nV p-p (0.1 Hz to 10 Hz, AV = +100), the ADA4528-1/ADA4528-2 are well suited for applications in which error sources cannot be tolerated.
The ADA4528-1/ADA4528-2 have a wide operating supply range of 2.2 V to 5.5 V, high gain, and excellent CMRR and PSRR specifications, which make it ideal for applications that require precision amplification of low level signals, such as position and pressure sensors, strain gages, and medical instrumentation.
The ADA4528-1/ADA4528-2 are specified over the extended industrial temperature range (−40°C to +125°C). The ADA4528-1 and ADA4528-2 are available in 8-lead MSOP and 8-lead LFCSP packages.
For more information about the ADA4528-1/ADA4528-2, see the AN-1114 Application Note, Lowest Noise Zero-Drift Amplifier Has 5.6 nV/√Hz Voltage Noise Density.
Applications
- Thermocouple/thermopile
- Load cell and bridge transducers
- Precision instrumentation
- Electronic scales
- Medical instrumentation
- Handheld test equipment
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
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MT-055: Chopper Stabilized (Auto-Zero) Precision Op Amps2/14/2015PDF320 kB
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MT-052: Op Amp Noise Figure: Don't Be Misled2/14/2015PDF60 kB
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MT-050: Op Amp Total Output Noise Calculations for Second-Order System2/14/2015PDF38 kB
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MT-049: Op Amp Total Output Noise Calculations for Single-Pole System2/14/2015PDF40 kB
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MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth2/14/2015PDF81 kB
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MT-047: Op Amp Noise2/14/2015PDF72 kB
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SAR ADC & Driver Quick-Match Guide9/13/2013PDF251 kB
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CN0363: Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Digital Synchronous Detection (Rev. 0)7/12/2017PDF346 K
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CN0396: Dual Electrochemical Gas Sensor with Temperature Compensation (Rev. 0)10/27/2016PDF215 K
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CN-0338: NDIR Thermopile-Based Gas Sensing Circuit (Rev. 0)2/12/2016PDF392 K
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CN-0216: Precision Weigh Scale Design Using the AD7791 24-Bit Sigma-Delta ADC with External ADA4528-1 Zero-Drift Amplifiers3/14/2012PDF596 kB
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Condition Monitoring System Design Choices and Their Impact on Signal Chain Implementation10/21/2021
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DC Energy Metering Applications2/5/2021 Analog Dialogue
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Analysis of Input Current Noise with Even Harmonics Folding Effect in a Chopper Op Amp5/1/2019 Analog Dialogue
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When Good Electrons Go Bad: How to Protect Your Analog Front End1/1/2019
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Complete Gas Sensor Circuit Using Nondispersive Infrared (NDIR)10/1/2016 Analog Dialogue
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Synchronous Detectors Facilitate Precision Low-Level Measurements11/1/2014 Analog Dialogue
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A Deeper Look into Difference Amplifiers2/1/2014 Analog Dialogue
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MS-2066: Low Noise Signal Conditioning for Sensor-Based Circuits11/1/2010PDF425 kB
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This Noise Will Keep You Up at Night2/1/2017
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.
Models for the following parts are available in LTspice:
ADA4528-2
SPICE Models
CIR
ADA4528 SPICE Macro Model
3.11 K
Design Tools
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.
Reference Designs (4)
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.
PCN-PDN Information
Support & Discussions
ADA4528-1 Discussions
Sample & Buy
Ordering FAQs
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Lead Times
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Sampling
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Evaluation Boards
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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.