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ADA4522-1ARMZ-R7

55V zero-drift op-amp, 5μV Vos, 5.8nV/√Hz noise, RR-output, MSOP-8

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Manufacturer Part：

ADA4522-1ARMZ-R7

Package：

MSOP-8 (3 x 3 mm)

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Description

Product Overview

The ADA4522-1ARMZ-R7 from Analog Devices is a single-channel, 55V, zero-drift, ultralow noise, rail-to-rail output operational amplifier in an MSOP-8 package. With 5μV max offset voltage, 22nV/°C drift, and 5.8nV/√Hz noise density, it delivers precision amplification for industrial, automotive, and measurement applications.

Key Specifications

Supply Voltage Range 4.5V to 55V (±2.25V to ±27.5V)
Offset Voltage 5 μV (max)
Offset Voltage Drift 22 nV/°C (max)
Voltage Noise Density 5.8 nV/√Hz (typical)
Input Bias Current 50 pA (typical)
Gain Bandwidth Product 2.7 MHz
Slew Rate 1.7 V/μs
CMRR 160 dB (typical)
Package MSOP-8
Operating Temperature -40°C to +125°C

Features

  • Ultralow offset voltage of 5μV max with 22nV/°C drift
  • Low voltage noise density of 5.8nV/√Hz for precision signal conditioning
  • Rail-to-rail output with ground-sensing input capability
  • Wide supply range: 4.5V to 55V single or ±2.25V to ±27.5V dual
  • Integrated EMI filtering for enhanced noise immunity
  • AEC-Q100 qualified for automotive applications
  • Unity-gain stable with 3MHz crossover frequency

Applications

  • Precision shunt current sensing in battery management systems
  • Thermocouple and RTD temperature measurement front-ends
  • Load cell and bridge transducer signal conditioning
  • PLC analog input/output modules
  • Automotive sensor signal amplification

The ADA4522-1ARMZ-R7 is a single-channel zero-drift operational amplifier from Analog Devices, optimized for total accuracy over time, temperature, and voltage conditions. It features an ultralow input offset voltage of 5μV maximum with drift of only 22nV/°C, achieved through an advanced chopping technique that continuously corrects offset errors. The device delivers low voltage noise density of 5.8nV/√Hz typical, making it suitable for amplifying very small signals in precision measurement applications. With a wide operating voltage range of 4.5V to 55V, ground-sensing inputs, rail-to-rail output, and integrated EMI filters, the ADA4522-1 is AEC-Q100 qualified for automotive applications and specified over the -40°C to +125°C temperature range.

The ADA4522-1 uses a chopper-stabilized (zero-drift) architecture. (1) The input chopping stage modulates the input signal and amplifier offset to a higher frequency using a pair of input switches, moving the DC offset and 1/f noise away from the baseband. (2) The main amplifier provides gain with its inherent offset and 1/f noise now modulated to the chopping frequency, while the desired input signal passes through unaffected. (3) The output chopping stage demodulates the amplified input signal back to baseband while modulating the residual offset and 1/f noise to the chopping frequency, where they are filtered by the internal low-pass network. This auto-zeroing process runs continuously, eliminating offset drift over time and temperature. The integrated EMI filters reject high-frequency interference before it can be rectified by the input stage.

Pin Name Function
1 NC No connection
2 -IN Inverting input
3 +IN Non-inverting input
4 V- Negative supply
5 NC No connection
6 OUT Output
7 V+ Positive supply
8 NC No connection
  • High-precision shunt current sensing in battery management and power monitoring systems
  • Thermocouple and RTD temperature measurement with microvolt-level accuracy
  • Load cell and strain gauge bridge amplification requiring low drift and noise
  • Programmable logic controller (PLC) analog I/O modules
  • Automotive on-board charger and DC-DC converter current sensing
Model Manufacturer Key Difference
ADA4522-2ARMZ Analog Devices Dual channel version, MSOP-8
ADA4522-1ARZ-R7 Analog Devices SOIC-8 package option
ADA4523-1ARMZ Analog Devices Higher BW (4.5MHz), lower noise
MAX44250 Maxim 36V zero-drift, SOT-23-6
OPA2189AIDR TI 36V zero-drift dual, SOIC-8
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Quality Assurance

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Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

Service & Packaging

Materialparts is a professional electronic component supplier based in Shenzhen, China, with over 20 years of global trading experience. We integrate component procurement, quality inspection, technical support, customized packaging, and global delivery services to provide one-stop supply chain solutions. Our business covers industrial control, automotive electronics, consumer electronics, medical devices and other industries. We always adhere to genuine sources, stable supply and considerate after-sales service.

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Contact Information

For service consultation or packaging customization, please feel free to contact us:
Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China
 

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