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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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INA821 Datenblatt(PDF) 1 Page - Texas Instruments |
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INA821 Datenblatt(HTML) 1 Page - Texas Instruments |
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1 / 50 page  Input Stage Offset Voltage Drift (PV/qC) -0.4 -0.3 -0.2 -0.1 0 0.1 0.2 0.3 0.4 30 25 20 15 10 5 0 D002 + ± + ± + ± 10 k 24.7 k 10 k 10 k 10 k 24.7 k Over- Voltage Protection Over- Voltage Protection RG REF +VS OUT -VS -IN +IN RG O IN IN REF V G V V V : G 49.4 k G 1 R RG Product Folder Order Now Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. INA821 SBOS893D – AUGUST 2018 – REVISED JUNE 2020 INA821 35-µV Offset, 7-nV/ √Hz Noise, Low-Power, Precision Instrumentation Amplifier 1 1 Features 1 • Low offset voltage: 10 µV (typ), 35 µV (max) • Gain drift: 5 ppm/°C (G = 1), 35 ppm/°C (G > 1) (max) • Noise: 7 nV/ √Hz • Bandwidth: 4.7 MHz (G = 1), 290 kHz (G = 100) • Stable with 1-nF capacitive loads • Inputs protected up to ±40 V • Common-mode rejection: 112 dB, G = 10 (min) • Power supply rejection: 110 dB, G = 1 (min) • Supply current: 650 µA (max) • Supply range: – Single-supply: 4.5 V to 36 V – Dual-supply: ±2.25 V to ±18 V • Specified temperature range: –40°C to +125°C • Packages: 8-pin SOIC, VSSOP, and WSON 2 Applications • Analog input module • Flow transmitter • Battery test • LCD test • Electrocardiogram (ECG) • Surgical equipment • Process analytics (pH, gas, concentration, force and humidity) 3 Description The INA821 is a high-precision instrumentation amplifier that offers low power consumption and operates over a wide single-supply or dual-supply range. A single external resistor sets any gain from 1 to 10,000. The device has high precision as a result of super-beta input transistors, which provide low input offset voltage, offset voltage drift, input bias current, and input voltage and current noise. Additional circuitry protects the inputs against overvoltage up to ±40 V. The INA821 is optimized to provide a high common- mode rejection ratio. At G = 1, the common-mode rejection ratio exceeds 92 dB across the full input common-mode range. The device is designed for low- voltage operation from a 4.5-V single supply, and dual supplies up to ±18 V. The INA821 is available in 8-pin SOIC, VSSOP, and WSON packages, and is specified over the –40°C to +125°C temperature range. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) INA821 SOIC (8) 4.90 mm × 3.91 mm VSSOP (8) 3.00 mm × 3.00 mm WSON (8) 3.00 mm x 3.00 mm (1) For all available packages, see the package option addendum at the end of the data sheet. INA821 Simplified Internal Schematic Typical Distribution of Input Stage Offset Voltage Drift |
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