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الصفحة الرئيسية > الدوائر المتكاملة الدوائر المتكاملة > الدوائر المتكاملة الخطية التناظرية > INA139NA/3K

INA139NA/3K

Hi-Side Current Monitor, 2.7-40V, Iout, SOT-23-5

8901

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جزء الشركة المصنعة ： جزء الشركة المصنعة

INA139NA/3K

الحزمة ： الحزمة

SOT-23-5 (2.90 x 1.60 x 1.10 mm, 0.95mm pitch)

العلامة التجارية ： العلامة التجارية
فئات المنتجات:：فئات المنتجات
الالتزام بالجودة
الشحن والدفع
الخدمة والتغليف
دليل المنتج
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الوصف

نظرة عامة على المنتج

The INA139NA/3K from Texas Instruments is a 2.7-40V high-side current shunt monitor with current output, adjustable gain via external resistor, 60uA Iq, and SOT-23-5 package.

المواصفات الرئيسية

النوع High-Side Unipolar Current Shunt Monitor (Current Output)
Common-Mode Voltage 2.7V to 40V
جهد الإمداد 2.7V to 40V
نوع الإخراج Current output (transconductance)
Transconductance 1000 uA/V (typical)
Gain Range 1 to 100+ (set by external load resistor)
جهد إزاحة المدخلات +/-1 mV (max)
CMRRR 100 dB (min)
Bandwidth 440 kHz (ROUT=10kOhm); 220 kHz (ROUT=20kOhm)
تيار التهدئة 60 uA (typical); 125 uA (max)
Accuracy +/-2% gain error
الحزمة SOT-23-5 (DBV, NA suffix)
درجة حرارة التشغيل -40C to +125C

الميزات

  • Complete unipolar high-side current measurement
  • 2.7V to 40V common-mode and supply range
  • Independent supply and common-mode voltage
  • Single external resistor sets any gain
  • 60uA typical quiescent current
  • Current output allows flexible gain and level shifting

التطبيقات

  • Battery chargers and fuel gauges
  • Motor current monitoring
  • Power supply load current measurement
  • Overcurrent detection

The INA139NA/3K from Texas Instruments is a high-side unipolar current shunt monitor with a current output in a 5-pin SOT-23 package. The NA suffix denotes the SOT-23-5 package, and /3K indicates tape and reel packaging with 3000 units per reel. Unlike voltage-output current sense amplifiers, the INA139 converts the differential sense voltage across the shunt resistor to a proportional output current through an external load resistor (RL). The transconductance of 1000uA/V means that for every 1mV of sense voltage, the output sources 1uA of current. The output voltage is then VOUT = IOUT x RL = Vsense x 1000uA/V x RL, allowing any gain to be set by choosing the appropriate RL value. This current-output architecture provides flexibility for level shifting and remote sensing: the output current can be routed through a long PCB trace to a remote ADC without voltage drop errors. The INA139 operates from 2.7V to 40V common-mode voltage, independent of the supply voltage, allowing the supply to be connected to either side of the shunt resistor. The 60uA quiescent current minimizes the error caused by connecting the supply across the shunt, and the +/-1mV max input offset limits the minimum measurable sense voltage.

The INA139NA/3K uses a current-output architecture based on a precision operational amplifier and a matched internal resistor network. The differential voltage across the shunt resistor (Vsense = VIN+ – VIN-) is amplified and converted to a proportional output current through an internal transconductance stage. The internal 1000uA/V transconductance is set by a laser-trimmed internal resistor. The output current flows through the external load resistor RL connected from the OUT pin to ground, producing a ground-referenced output voltage: VOUT = Vsense x 1000uA/V x RL. For example, with Vsense = 100mV and RL = 10kOhm, VOUT = 100mV x 1000uA/V x 10kOhm = 1.0V, corresponding to a gain of 10 V/V. The gain is entirely determined by the external resistor, allowing any gain from 1 to over 100 to be set. The high 100dB CMRR is achieved through precision laser trimming of the internal resistor divider that attenuates the common-mode voltage before it reaches the differential amplifier. The independent supply and common-mode voltage operation allows the supply pin (V+) to be connected to either side of the shunt resistor, with the 60uA quiescent current adding only a small error to the measurement.

دبوس الاسم النوع الوظيفة
1 V+ الطاقة Supply voltage (2.7-40V)
2 GND الطاقة أرضي
3 IN+ المدخلات Positive sense input (high-side)
4 IN- المدخلات Negative sense input (low-side)
5 انتهى المخرجات Current output (connect RL to GND)
  • 12V battery charger current monitoring with 100mOhm shunt, RL=25kOhm providing 2.5V/V gain, 0-2.5V output for 0-1A charge current
  • 24V industrial motor current sensing with 50mOhm shunt and RL=10kOhm for 5V full-scale at 1A, 440kHz bandwidth for PWM current measurement
  • USB port overcurrent detection with 20mOhm shunt and comparator on VOUT, triggering at 2A with 40mV sense voltage
الشركة المصنعة رقم الجزء الحزمة الملاحظات
TI INA169NA/3K SOT-23-5 60V common-mode version
TI INA138NA/3K SOT-23-5 Lower cost, wider Vsense range
TI INA180A1IDBVR SOT-23-5 Voltage output, 20V/V gain
مكسيم MAX9938FATT+T SOT-23-6 Current-sense amp, voltage out
TI INA240A1DRQ1 VSSOP-8 Enhanced PWM rejection
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ضمان الجودة

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:
  • إلكترونيات السيارات: All automotive-grade components pass AEC-Q series certification, featuring excellent stability and durability to adapt to complex vehicle operating environments.
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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.

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Email: info@materialparts.com
Tel / WhatsApp: +86 13760382860
Address: Room 2919, Guoli Building, Huaqiang North, Futian District, Shenzhen, Guangdong, China

 

الشحن والدفع

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.

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

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    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.

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    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:
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  • 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

الخدمة والتغليف

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;
  • Shockproof buffer materials are added for fragile products to ensure transportation safety;
  • Each package is clearly marked with part number, quantity, batch number and specifications for easy inventory counting and management.

2. Classified Professional Packaging

  • Anti-static Packaging: Static-sensitive components such as chips, circuit boards and sensors are packaged with anti-static bags, shielding boxes and conductive foam in strict accordance with international anti-static standards to prevent static damage.
  • 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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