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AD8429ARZ

1nV/√Hz ultra-low noise in-amp, 90dB CMRR, 15MHz BW, G=1-10000, ±4-18V, 8-SOIC

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制造商零件：

AD8429ARZ

包装：

8-SOIC (3.9 x 4.9 x 1.5mm)

品牌：
产品类别：
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说明

产品概览

The AD8429ARZ is an ultralow noise instrumentation amplifier from Analog Devices with 1nV/√Hz input noise density — among the lowest available in any in-amp. With 90dB minimum CMRR at G=1, 15MHz bandwidth, 22V/µs slew rate, and gain programmable from 1 to 10,000 via a single resistor, it excels in measuring extremely small signals. The B-grade offers 50µV max input offset and 0.02% gain accuracy. Supplied in 8-pin SOIC for −40°C to +125°C operation.

主要规格

Input Voltage Noise 1 nV/√Hz @ 1kHz
Output Voltage Noise 45 nV/√Hz @ 1kHz
Current Noise 1.5 pA/√Hz @ 1kHz
CMRR (DC, G=1) 80/90 dB (A/B grade min)
CMRR (5kHz, G=1) 76/80 dB (A/B grade min)
输入失调电压 150/50 µV (A/B grade max)
Bandwidth (G=1) 15 MHz
Bandwidth (G=100) 1.2 MHz
压摆率 22 V/µs
Gain Range 1 to 10,000 (single resistor)
Gain Error (G=1) 0.05/0.02% (A/B grade max)
THD (1kHz, G=1) -130 dBc
电源电压 ±4V to ±18V
Supply Current 6.7 mA (typical)
包装 8-SOIC (3.9 x 4.9mm)
工作温度 -40°C to +125°C

特点

  • Industry-leading 1 nV/√Hz input voltage noise
  • 90 dB minimum CMRR at G=1 (B grade)
  • 15 MHz bandwidth at G=1, 1.2 MHz at G=100
  • Gain set with single external resistor: G = 1 + (6kΩ/RG)
  • -130 dBc THD at 1kHz for pristine signal quality
  • 22 V/µs slew rate for fast signal acquisition
  • ±4V to ±18V dual supply operation
  • Reference pin for output level shifting
  • Extended temperature range: −40°C to +125°C
  • Pin-compatible with AD8229, AD8421, AD8221

应用

  • Medical instrumentation (EEG, ECG front-ends)
  • Precision data acquisition systems
  • Microphone preamplification
  • Vibration analysis and accelerometer conditioning
  • Geophone and seismic signal conditioning
  • Low-level sensor amplification

The AD8429ARZ is the industry’s lowest-noise instrumentation amplifier from Analog Devices, achieving just 1 nV/√Hz input voltage noise density — making it uniquely suited for amplifying microvolt-level signals in noisy environments. The current-feedback architecture provides high bandwidth at high gain (1.2 MHz at G=100), while maintaining 90 dB minimum CMRR at G=1. Gain is set from 1 to 10,000 with a single external resistor using the formula G = 1 + (6kΩ/RG). The device delivers -130 dBc THD at 1kHz, 22 V/µs slew rate, and 0.75µs settling to 0.01%. The reference pin allows output level shifting for single-supply signal chains. The 8-pin SOIC package and -40°C to +125°C operating range suit demanding industrial and medical environments.

The AD8429 uses a three-op-amp instrumentation amplifier architecture with a current-feedback input stage. The input stage consists of two matched transconductance amplifiers that convert the differential input voltage to internal current signals. The gain resistor RG determines how much feedback current flows between the two input buffers; a smaller RG increases the feedback current, increasing gain per G = 1 + (6kΩ/RG). The output stage is a difference amplifier that converts the single-ended current signals to a voltage output referenced to the REF pin. The current-feedback topology provides bandwidth that decreases slowly with gain (15 MHz at G=1, 1.2 MHz at G=100), unlike voltage-feedback designs where bandwidth drops proportionally. The input protection circuitry improves settling after large common-mode or differential transients, crucial for multiplexed data acquisition.

针脚 名称 说明
1 -IN Inverting input
2 RG Gain resistor terminal 1
3 RG Gain resistor terminal 2
4 +IN Non-inverting input
5 -VS Negative supply voltage
6 REF Reference (output offset) input
7 VOUT Amplifier output
8 +VS Positive supply voltage
  • Vibration Analysis Front-End: Connect a piezoelectric accelerometer to the AD8429 with G=1000. The 1 nV/√Hz input noise yields a noise floor of ~1.4 nV/√Hz RTI, detecting vibration signals below 0.1 µg/√Hz. The 80 dB CMRR at 5kHz rejects electromagnetic interference from nearby motor drives. The -130 dBc THD preserves spectral purity for FFT-based vibration analysis.
  • EEG/ECG Medical Instrumentation: Amplify biopotential signals (10µV to 5mV) with G=1000. The ultra-low 100 nV p-p noise (0.1-10Hz at G=1000) reveals subtle ECG P-waves and EEG alpha rhythms. The REF pin shifts the output to mid-supply for single-supply ADC interfacing. The 90 dB CMRR rejects 50/60Hz common-mode interference from power lines.
  • Geophone Signal Conditioning: Condition low-frequency geophone outputs in seismic monitoring. The 1 nV/√Hz noise at 1kHz extends to low frequencies with only 2 µV p-p noise (0.1-10Hz at G=1), revealing micro-seismic events. The ±18V supply range accommodates the large dynamic range of seismic signals.
模型 Voltage Noise CMRR (G=1) BW (G=1) 主要区别
AD8429BRZ 1 nV/√Hz 90 dB min 15 MHz B-grade, tighter specs
AD8229BRZ 1 nV/√Hz 80 dB min 15 MHz Previous gen, lower CMRR
INA103 1 nV/√Hz 80 dB min 5 MHz TI/Burr-Brown, lower BW
AD8421BRZ 3.2 nV/√Hz 94 dB min 10 MHz Higher CMRR, higher noise
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质量保证

Quality is the core foundation of our long-term global cooperation. With over 20 years of experience in the electronic component industry, Materialparts has built a strict and standardized quality management system covering component sourcing, incoming inspection, full-batch testing, packaging and delivery. We are committed to delivering 100% genuine, high-reliability electronic components for industrial control, automotive electronics, consumer electronics and medical device industries, and fully safeguarding your production and R&D projects.

1. Authorized & Genuine Sourcing Promise

All of our electronic components are procured from official authorized distributors and original manufacturers. We strictly reject counterfeits, refurbished parts, disassembled components and gray-market goods. Every product is guaranteed to be brand-new original parts and fully consistent with the original technical parameters. For branded products such as NXP IC series, we maintain complete supply channel documents to realize full product traceability.

2. Strict Full-batch Quality Inspection

We implement 100% full-batch quality control for all goods before shipment. Our professional QC team conducts multi-dimensional tests including appearance inspection, electrical parameter testing, performance verification and packaging check. Each batch of components is attached with complete inspection reports and batch records. We stick to zero-tolerance standards for defective products to ensure every piece of component meets industrial application requirements.

3. Industry Standard Compliance

Our products comply with a variety of international industry quality standards to adapt to high-standard application scenarios:
  • 汽车电子: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
  • 医疗设备: High-reliability components meet medical industry safety and compliance regulations, ensuring stable operation for medical equipment.
  • Industrial Control & Consumer Electronics: Products conform to universal international electronic industry standards, suitable for long-term continuous operation of various equipment.

4. Professional Reliability Control

For static-sensitive, moisture-sensitive and precision components such as ICs, PCBs, sensors and connectors, we carry out reliability screening in advance. Combined with standardized ESD anti-static packaging and vacuum moisture-proof packaging, we avoid component damage caused by static electricity, dampness or collision during storage and transportation, and retain the original performance of products.

5. Traceability Management System

We establish a complete product traceability system. Each batch of goods corresponds to independent batch number, sourcing record, inspection record and delivery record. Customers can query the whole lifecycle information of components at any time. This system effectively solves quality risks and facilitates after-sales handling and production quality control for your company.

6. After-sales Quality Guarantee

If any product is confirmed to have non-conformity quality problems due to our reasons after receipt, we provide free return, exchange and supplementary delivery services. Our professional quality team will also conduct root cause analysis to optimize our quality control process. We respond to quality feedback within 24 hours to resolve your worries efficiently.

联系我们

If you have inquiries about our quality standards, inspection procedures or product certification documents, 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

 

发货与付款

Materialparts is a professional global supplier of electronic components with over 20 years of industry experience. We provide one-stop supply of passive components, integrated circuits, as well as parts for industrial control, automotive electronics, consumer electronics and medical devices. Below are the unified shipping and payment policies applicable to all orders, samples and bulk purchases worldwide.

1. Payment Terms

We offer a variety of secure and convenient payment methods to meet diverse business cooperation needs. Details are as follows:
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  1. Settlement Currency

     

    US Dollar (USD) is the default settlement currency. RMB is available for domestic customers.

  2. Bank Charges

     

    All transfer fees, intermediary bank charges and other remittance-related expenses shall be borne by the buyer.

  3. Payment Requirements
  • Sample and small orders: Shipment will be arranged upon full payment.
  • In-stock bulk orders: Goods will be delivered within 2 to 3 working days after full payment.

2. Shipping & Delivery

We partner with leading global logistics providers to ensure safe and fast delivery worldwide. Relevant details are listed below:
  1. Logistics Partners
  • International Express: DHL, FedEx, UPS, TNT
  • Economy Logistics: Air freight and sea freight for large-volume cargo
  • Domestic Delivery: SF Express, Yunda Express
  1. Order Processing Time
  • In-stock items: Orders confirmed and fully paid before 14:00 (GMT+8) will be shipped on the same day. All other orders will be dispatched within 1 to 2 working days.
  • Out-of-stock or sourced items: The delivery lead time will be confirmed separately according to brand and inventory status.
  1. Estimated Transit Time
  • International Express: 3 – 7 working days globally
  • Air Freight: 7 – 12 working days
  • Sea Freight: 25 – 40 working days for heavy and large bulk cargo
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  • Free international express delivery is offered for large orders. Terms for long-term partners can be negotiated separately.
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    Within 24 hours after dispatch, we will send the tracking number, commercial invoice, packing list and other documents to your email or communication account. You may check the shipment status online in real time.

3. General Order Rules & Notes

  1. MOQ & Sample Service

     

    We support flexible minimum order quantities for samples, small-batch and large-batch orders. All sample orders shall comply with the above shipping and payment policies.

  2. Packaging Standard

     

    All electronic components are packed with professional anti-static and shockproof materials. Original factory packaging is available for branded chips and integrated circuits.

4. Customs & Liability Statement

  1. Import Duties & Taxes

     

    All import duties, customs clearance fees and local taxes incurred for international shipments shall be borne by the buyer. We will provide complete customs documents to assist you with clearance procedures.

  2. Handling of Lost or Damaged Goods
  • In case of loss or severe damage during transit, please contact us within 48 hours after receiving the tracking information. We will assist you in filing a claim with the logistics provider.
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5. Local Pickup in Shenzhen

Local pickup service is available for customers in Shenzhen and surrounding areas:
  • Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong Province, China
  • Business Hours: 09:00 – 18:00, Monday to Friday. Closed on weekends and official public holidays.
  • Notice: Please make an appointment via email or communication tools one day in advance, and present your order information upon pickup.

Contact Information

Email: info@materialparts.com

Tel / WhatsApp: +86 13760382860

服务与包装

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.

Core Services

1. One-stop Sourcing & BOM Support

We specialize in a full range of passive and active electronic components, including SMD resistors, power resistors, connectors, aviation connectors, LED beads, flexible circuit boards, printed circuit boards, and integrated circuits. Our professional team provides BOM list consolidation, component matching, and alternative model recommendation services. We support sample orders, small-batch trial production, and mass production orders with flexible MOQs to meet diverse procurement needs.

2. Genuine Product Guarantee & Full-process Quality Inspection

All products are sourced from official authorized channels and are 100% original genuine parts. Every batch of goods undergoes strict full-process quality inspection before delivery, with complete batch records and traceability documents provided. Our products comply with AEC-Q standards for automotive electronics and high-reliability specifications for medical devices. We eliminate counterfeits, refurbished parts and defective products from the source to secure your project production.

3. Fast Quotation & Order Processing

Our customer service team responds promptly to inquiries and quotation requests. All in-stock orders will be processed within one working day. We provide stocking reservation services for long-term cooperative customers, effectively solving problems such as component shortages and unstable supply chains.

4. Professional Technical Support

Our senior engineer team provides free technical consultation, model selection guidance and original manufacturer datasheets. We assist customers in solving problems related to product R&D, circuit design and component application, providing reliable technical support for project progress.

5. Sourcing for Special Components

Relying on our global supply chain network, we professionally source scarce components, obsolete parts and customized special components to efficiently solve your procurement difficulties.

6. Global Logistics & Document Services

We cooperate with mainstream international logistics providers including DHL, FedEx, UPS and TNT to achieve fast global delivery. We can provide complete export documents such as customs declaration files, commercial invoices and packing lists to ensure smooth customs clearance for international shipments. Local pickup is also available for customers in Shenzhen, China.

Professional Packaging Standards

Electronic components are sensitive to static electricity, collision, moisture and dust. We adopt industry-standard anti-static packaging solutions to fully ensure the integrity of goods during transportation and storage.

1. General Packaging Specifications

  • All components are packed separately to avoid damage caused by friction and collision;
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2. Classified Professional Packaging

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  • Vacuum Moisture-proof Packaging: Moisture-sensitive components are vacuum-sealed with desiccants to isolate humid air, suitable for ocean transportation and long-term storage.
  • Original Factory Packaging: Integrated circuits of brands such as NXP are delivered with original reels, trays or tubes by default, retaining complete original packaging and adapting to automated SMT production lines.
  • Discrete Device Packaging: Discrete devices such as SMD resistors, power resistors and LEDs are quantitatively and classifiedly packaged with accurate quantity and clear marking.
  • Connector / Aviation Connector Packaging: Hard outer packaging is adopted to prevent pin bending and structural deformation.

3. Custom Packaging Services

We provide value-added services including personalized packaging, custom labeling and re-reeling according to customer requirements, fully matching your production and warehouse management standards.

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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