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INA849

現行

超低雜訊 (1nV/√Hz)、高速 (28MHz、35V/μs)、精密 (35μV) 儀器放大器

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產品規格表

INA849

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 8 Input offset (±) (max) (µV) 35 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 1 Features Current Feedback, High speed, Super-beta, Ultra-low noise CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 20 Iq (typ) (mA) 6.2 Bandwidth at min gain (typ) (MHz) 28 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.15 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) 2.5 Input common mode headroom (to positive supply) (typ) (V) -2.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.06
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 8 Input offset (±) (max) (µV) 35 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 10000 Noise at 1 kHz (typ) (nV√Hz) 1 Features Current Feedback, High speed, Super-beta, Ultra-low noise CMRR (min) (dB) 120 Input offset drift (±) (max) (µV/°C) 0.4 Input bias current (±) (max) (nA) 20 Iq (typ) (mA) 6.2 Bandwidth at min gain (typ) (MHz) 28 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Output swing headroom (to negative supply) (typ) (V) 0.15 Output swing headroom (to positive supply) (typ) (V) -0.15 Input common mode headroom (to negative supply) (typ) (V) 2.5 Input common mode headroom (to positive supply) (typ) (V) -2.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.06
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • Ultra-low noise: 1-nV/√Hz input voltage noise (typical)
  • Precision super-beta input performance:
    • Low offset voltage: 35 µV (maximum)
    • Low offset voltage drift: 0.4 µV/°C (maximum)
    • Low input bias current: 20 nA (maximum)
    • Low gain drift: 5 ppm/°C for G = 1 (maximum)
  • Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100)
  • Slew rate: 35 V/µs
  • Common-mode rejection: 120 dB (minimum) for maximum gain
  • Supply range:
    • Single supply: 8 V to 36 V
    • Dual supply: ±4 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Packages: 8-pin SOIC and VSSOP
  • Ultra-low noise: 1-nV/√Hz input voltage noise (typical)
  • Precision super-beta input performance:
    • Low offset voltage: 35 µV (maximum)
    • Low offset voltage drift: 0.4 µV/°C (maximum)
    • Low input bias current: 20 nA (maximum)
    • Low gain drift: 5 ppm/°C for G = 1 (maximum)
  • Bandwidth: 28 MHz (G = 1), 8 MHz (G = 100)
  • Slew rate: 35 V/µs
  • Common-mode rejection: 120 dB (minimum) for maximum gain
  • Supply range:
    • Single supply: 8 V to 36 V
    • Dual supply: ±4 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Packages: 8-pin SOIC and VSSOP

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).

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).
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重要文件 類型 標題 格式選項 日期
* Data sheet INA849 Ultra-Low-Noise (1 nV/√Hz), High-Bandwidth, Instrumentation Amplifier datasheet (Rev. B) PDF | HTML 2021年 4月 23日
Application brief Ultra-Low-Noise JFET Preamplifier Design for High Impedance Sensors PDF | HTML 2024年 5月 16日
Application note Amplifier Input Common-Mode and Output-Swing Limitations PDF | HTML 2022年 1月 14日
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021年 7月 27日
Application brief How to Select Precision Amplifiers for Semiconductor Testers (Rev. A) PDF | HTML 2020年 12月 3日
Technical article What is an instrumentation amplifier? PDF | HTML 2019年 8月 9日

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INAEVM-ALT-SO8 — 採用 SO-8 (D) 封裝之具有替代針腳的儀器放大器的評估模組

INAEVM-ALT-SO8 是具有替代針腳配置的儀器放大器評估模組 (EVM)，可用於簡化 SO-8 (D) 封裝的精密儀器放大器原型設計，針腳配置如使用指南所示。EVM 為未組裝的空板，因此儀器放大器裝置樣品需單獨訂購。

使用指南: PDF
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模擬型號

INA849 PSpice Model (Rev. A)

SBOMBJ7A.ZIP (25 KB) - PSpice Model
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INA849 TINA-TI Reference Design

SBOMBJ8.TSC (444 KB) - TINA-TI Reference Design
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INA849 TINA-TI Spice Model

SBOMBJ6.ZIP (74 KB) - TINA-TI Spice Model
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ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

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TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
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