The INA849 is an ultra-low noise instrumentation amplifier optimized for maximum accuracy in high-resolution systems and operation over a wide single-supply or dual-supply range. The device offers significantly lower input bias current than competitors as a result of super-beta input transistors. A state-of-the-art manufacturing process provides exceptionally low voltage noise, input offset voltage, and offset voltage drift.
Precisely matched integrated resistors provide a high, 92-dB (G = 1) common-mode rejection across the full input common-mode range. A single external resistor sets any gain from 1 to 10,000. The current-feedback topology of the INA849 provides wide bandwidth at higher gains for very-small, fast-moving signals. For example, the device provides 8 MHz of bandwidth at G = 100, and 28 MHz at a G = 1, with a fast 0.4-µs settling time (0.01%) for directly driving high-resolution, analog-to-digital converters (ADCs).
| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Data sheet | INA849 Ultra-Low-Noise (1 nV/√Hz), High-Bandwidth, Instrumentation Amplifier datasheet (Rev. B) | PDF | HTML | Apr 23, 2021 |
| Application brief | Ultra-Low-Noise JFET Preamplifier Design for High Impedance Sensors | PDF | HTML | May 16, 2024 | |
| Application note | Amplifier Input Common-Mode and Output-Swing Limitations | PDF | HTML | Jan 14, 2022 | |
| Application note | Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps | PDF | HTML | Jul 27, 2021 | |
| Application brief | How to Select Precision Amplifiers for Semiconductor Testers (Rev. A) | PDF | HTML | Dec 3, 2020 | |
| Technical article | What is an instrumentation amplifier? | PDF | HTML | Aug 9, 2019 |
For additional terms or required resources, click any title below to view the detail page where available.
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| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| VSSOP (DGK) | 8 | Ultra Librarian |
| SOIC (D) | 8 | Ultra Librarian |
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