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PGA281AIPWR

Zero-drift PGA, 1/8-128 V/V gain, 5uV Vos, 140dB CMRR, 36V, diff output, TSSOP-16

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制造商零件：

PGA281AIPWR

包装：

TSSOP-16 (5.0 x 6.4 x 1.2 mm)

品牌：
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说明

产品概览

The PGA281AIPWR from Texas Instruments is a precision zero-drift programmable gain instrumentation amplifier with digitally-controllable gain from 1/8 V/V to 128 V/V, 5uV offset, 140dB CMRR, and 36V supply capability in a TSSOP-16 package.

主要规格

渠道 1
Gain Range 1/8 V/V to 128 V/V (binary steps)
电源电压 10V to 36V (5V to 18V dual)
Input Common-Mode +/-15.5V at +/-18V supply
输入失调电压 5uV (typ at G=128)
Offset Drift 0.03 uV/C (typ)
Gain Drift 0.5 ppm/C (typ)
CMRR 140 dB (typ)
Gain Bandwidth 6 MHz
压摆率 1 V/us
Input Noise 7.5 nV/rtHz (typ at 1kHz)
输入偏置电流 2 nA (typ)
IQ per Channel 3.15 mA (typ)
Linearity (INL) 0.0001%
包装 TSSOP-16
工作温度 -40 to +125 C

特点

  • Binary gain steps from 1/8 V/V (attenuation) to 128 V/V
  • Near-zero offset and gain drift via proprietary autozeroing
  • 140dB CMRR for excellent common-mode rejection
  • Fully differential, rail-to-rail output for ADC interfacing
  • High input impedance (1GOhm) for sensor applications
  • Overload detection output
  • Very low 1/f noise due to chopper stabilization

应用

  • Precision signal instrumentation
  • Medical instrumentation
  • Industrial process control
  • Strain gauge amplifiers
  • Multi-channel data acquisition systems

The PGA281AIPWR from Texas Instruments is a high-precision, digitally programmable gain instrumentation amplifier using proprietary autozeroing (chopper stabilization) techniques to achieve near-zero offset voltage drift and gain drift. The device offers binary gain steps from 1/8 V/V (attenuation for high-voltage inputs) to 128 V/V (amplification for low-level signals), with additional scaling factors of 1 V/V and 1-3/8 V/V, making it a universal analog front-end for a wide variety of sensor and signal conditioning applications. The 36V supply capability and wide +/-15.5V input common-mode range at +/-18V supply comply with requirements for universal signal measurement in industrial environments. Key precision specifications include 5uV typical offset voltage at G=128, 0.03uV/C offset drift, 0.5ppm/C gain drift, 1.5ppm integral nonlinearity, and 140dB CMRR (typical). The very low 1/f noise characteristic of chopper-stabilized amplifiers enables precision measurement at low frequencies without drift errors. The fully differential, rail-to-rail output is designed to directly interface with high-resolution delta-sigma ADCs in their low-voltage domain. The PGA281 includes an overload detection output that indicates when the input signal exceeds the valid range, useful for system diagnostics and fault detection. The device is available in a TSSOP-16 package specified from -40 to +105C (A grade) or -40 to +125C (I grade).

The PGA281AIPWR operates as a chopper-stabilized programmable gain instrumentation amplifier. Key subsystems include: (1) Autozeroing Core – proprietary chopper stabilization eliminates 1/f noise and reduces offset voltage drift to near-zero; the input signal is modulated to a higher frequency where the amplifier has flat noise characteristics, amplified, then demodulated back to baseband; (2) Programmable Gain Network – internal resistor networks and switches configure binary gain steps from 1/8 V/V to 128 V/V via 4 digital gain control pins (G0-G3); the gain setting also includes a scaling factor pin for 1x or 1.375x multiplication; total available gains range from 0.125 V/V to 176 V/V; (3) High-Impedance Input – the differential input stage presents >1GOhm input impedance, allowing direct connection to high-impedance sensors without loading effects; input common-mode range extends to +/-15.5V with +/-18V supplies; (4) Differential Output – the output stage provides a fully differential, rail-to-rail output voltage referenced to a user-settable VOCM pin; this enables direct connection to differential-input ADCs; (5) Overload Detection – an open-drain FLAG output goes active when the input signal exceeds the valid measurement range, enabling system-level diagnostics and safety checks; (6) Gain Control – 4 GPIO-compatible digital pins (G0-G3) select one of 16 binary gain settings; gain changes occur in <1us with minimal transient settling.

针脚 名称 功能
1 VSP Positive analog supply (up to 18V)
2 VSN Negative analog supply (down to -18V)
3 VIN+ Non-inverting differential input
4 VIN- Inverting differential input
5 VSOP Positive output supply (2.7-5.5V)
6 VSON Negative output supply
7 VOUT+ Positive differential output
8 VOUT- Negative differential output
9 VOCM Output common-mode voltage setpoint
10 DVDD Digital supply (2.7-5.5V)
11-14 G0-G3 Gain select digital inputs
15 FLAG Overload detection output (open-drain)
16 REF Reference input / gain scaling
  • Strain gauge bridge: 128x gain amplifies mV-level bridge output to ADC input range with 5uV offset precision
  • Industrial 4-20mA loop: 1/8x gain attenuates high common-mode voltage to low-voltage ADC range
制造商 部件编号 包装 说明
TI PGA280AIPWR TSSOP-16 SPI interface version with input mux
ADI AD8253ACPZ LFCSP-10 Programmable gain, 10MHz BW
TI INA828AIDR SOIC-8 Fixed-gain instrumentation amplifier
ADI AD8422ARMZ MSOP-8 Low-power instrumentation amplifier
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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.

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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

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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.

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

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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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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

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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.

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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.

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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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