PINA821ID Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The PINA821ID is a precision instrumentation amplifier from Texas Instruments with an ultra-low 35 µV offset voltage and only 7 nV/√Hz input-referred noise, designed for accurate signal acquisition from bridge sensors and transducers. It delivers low-power operation with high CMRR and wide bandwidth suitable for industrial measurement and medical instrumentation. Available in small outline package with worldwide distribution.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- PINA821ID Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Ultra-low offset voltage of 35 µV for high-accuracy DC signal measurement
- Low input-referred noise density of 7 nV/√Hz enabling precision AC/DC signal acquisition
- Low quiescent power consumption suitable for battery-powered and portable instruments
- Single-resistor gain setting covering standard instrumentation amplifier gain ranges
- Small outline package (SOP) with RoHS-compliant Pb-free construction
Applications
The PINA821ID is ideal for precision measurement applications including strain gauge bridges, Wheatstone bridge sensors, thermocouple signal conditioning, and medical biopotential amplifiers. Its combination of ultra-low offset and noise makes it particularly suitable for data acquisition front-ends, portable medical monitors, and industrial weigh-scale electronics.
Specifications
| YTEOL | 0 |
| Amplifier Type | INSTRUMENTATION AMPLIFIER |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the input offset voltage and noise performance of the PINA821ID?
The PINA821ID features an ultra-low maximum input offset voltage of 35 µV and an input-referred voltage noise density of only 7 nV/√Hz. These specifications make it one of the quieter precision instrumentation amplifiers in its class, ensuring accurate measurement of small differential signals from sensors and bridges.
How is the gain of the PINA821ID set?
The PINA821ID uses a single external resistor (R_G) connected between the gain-setting pins to program the closed-loop gain. This classic instrumentation amplifier topology allows flexible gain selection from unity to several hundred, making it straightforward to adapt the device to different sensor output levels and measurement range requirements.
What package is the PINA821ID available in?
The PINA821ID is available in a small outline (SOP) package, a standard surface-mount format compatible with automated PCB assembly. This package provides a compact footprint suitable for space-constrained instrumentation front-end designs while maintaining the thermal performance required for continuous operation.
What applications is the PINA821ID best suited for?
The PINA821ID is best suited for precision analog front-end applications including bridge sensor amplification, electrocardiograph (ECG) and biopotential signal measurement, industrial process control transmitters, and scientific instrumentation requiring low noise and high CMRR. Its low power dissipation also qualifies it for portable and battery-operated measurement devices.
Related Guides
TPS613222ADBVR Boost Converter Design Guide: Battery-Powered 3.3 V Rail
Design a stable 3.3 V or 5 V boost rail with the TPS613222ADBVR: input/output capacitor sizing, inductor selection, and low-EMI PCB layout for portable battery-powered devices.
May 24, 2026
OPA4277MDTEP Precision Instrumentation Amp Design Guide
Circuit techniques for OPA4277MDTEP precision op-amp: instrumentation amp front-ends, low-side current sensing, photodiode TIA, and thermocouple amplifiers.
May 24, 2026
CDCE913PWR Programmable Clock Synthesizer Design Guide
Complete design guide for the CDCE913PWR clock synthesizer: VCO range, I2C programming, decoupling, and layout best practices for embedded systems.
May 22, 2026
OPA4277MDTEP Precision Quad Op-Amp Selection Guide: How to Choose the Right Variant
How to choose the right OPA4277 quad precision op-amp variant—OPA4277MDTEP vs UA—covering offset voltage, CMRR, supply range, and temperature grade.
May 22, 2026
Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“FindMyChip sourced our entire STM32 BOM in 48 hours when our usual distributor had 16-week lead times.”