首頁 放大器 儀器放大器
首頁
放大器
儀器放大器

INA848

現行

具有 2000 固定增益的超低雜訊、高頻寬儀器放大器

立即訂購
產品規格表

INA848

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) 2000 Voltage gain (max) (V/V) 2000 Noise at 1 kHz (typ) (nV√Hz) 1.5 Features Current Feedback, High speed, Super-beta, Ultra-low noise CMRR (min) (dB) 132 Input offset drift (±) (max) (µV/°C) 0.45 Input bias current (±) (max) (nA) 50 Iq (typ) (mA) 6.2 Bandwidth at min gain (typ) (MHz) 2.8 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Fixed Gain 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) 0.055
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 8 Input offset (±) (max) (µV) 35 Voltage gain (min) (V/V) 2000 Voltage gain (max) (V/V) 2000 Noise at 1 kHz (typ) (nV√Hz) 1.5 Features Current Feedback, High speed, Super-beta, Ultra-low noise CMRR (min) (dB) 132 Input offset drift (±) (max) (µV/°C) 0.45 Input bias current (±) (max) (nA) 50 Iq (typ) (mA) 6.2 Bandwidth at min gain (typ) (MHz) 2.8 Gain error (±) (max) (%) 0.15 Operating temperature range (°C) -40 to 125 Rating Catalog Type Fixed Gain 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) 0.055
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Fixed gain of 2000 V/V
  • Access to internal nodes for filtering
  • Ultra-low noise: 1.5 nV/√Hz input voltage noise (maximum)
  • Precision super-beta input performance:
    • Low offset voltage: 35 µV (maximum)
    • Low offset voltage drift: 0.45 µV/°C (maximum)
    • Low input bias current: 25 nA (typical)
    • Low gain drift: 5 ppm/°C (maximum)
  • Bandwidth: 2.8 MHz
  • Slew rate: 45 V/µs
  • Common-mode rejection: 132 dB (minimum)
  • Supply range:
    • Single supply: 8 V to 36 V
    • Dual supply: ±4 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Package: 8-pin SOIC
  • Fixed gain of 2000 V/V
  • Access to internal nodes for filtering
  • Ultra-low noise: 1.5 nV/√Hz input voltage noise (maximum)
  • Precision super-beta input performance:
    • Low offset voltage: 35 µV (maximum)
    • Low offset voltage drift: 0.45 µV/°C (maximum)
    • Low input bias current: 25 nA (typical)
    • Low gain drift: 5 ppm/°C (maximum)
  • Bandwidth: 2.8 MHz
  • Slew rate: 45 V/µs
  • Common-mode rejection: 132 dB (minimum)
  • Supply range:
    • Single supply: 8 V to 36 V
    • Dual supply: ±4 V to ±18 V
  • Specified temperature range: –40°C to +125°C
  • Package: 8-pin SOIC

The INA848 is a fixed-gain instrumentation amplifier optimized for high-precision measurements, such as very-small, fast, differential input signals. TI’s super-beta topology provides a very low input bias current and current noise. The well-matched transistors help achieve a very low offset and offset drift. Matching of the internal resistors yields a high common-mode rejection ratio of 132 dB across the full input-voltage range, and a very low gain drift error of 5 ppm/⁰C (max).

The current-feedback topology of the INA848 produces a wide bandwidth of 2.8 MHz at a fixed gain of 2000, thereby eliminating the need for subsequent gain stages. The very-low noise floor of 1.3 nV/√Hz minimizes the impact on the equivalent number of bits (ENOB) when interfacing with high-resolution analog-to-digital converters (ADCs). The INA848 provides the flexibility of adding filters between the gain stages (pins 2 and 3) to maintain an adequate signal integrity.

These unique features of the INA848 make this device an excellent choice for applications requiring high-precision measurements, such as high-end medical instrumentation, electroencephalography, vibration sensing, and displacement measurements.

This device is designed for 8-V to 36-V single supplies, or ±4-V to ±18-V on dual supplies.

The INA848 is a fixed-gain instrumentation amplifier optimized for high-precision measurements, such as very-small, fast, differential input signals. TI’s super-beta topology provides a very low input bias current and current noise. The well-matched transistors help achieve a very low offset and offset drift. Matching of the internal resistors yields a high common-mode rejection ratio of 132 dB across the full input-voltage range, and a very low gain drift error of 5 ppm/⁰C (max).

The current-feedback topology of the INA848 produces a wide bandwidth of 2.8 MHz at a fixed gain of 2000, thereby eliminating the need for subsequent gain stages. The very-low noise floor of 1.3 nV/√Hz minimizes the impact on the equivalent number of bits (ENOB) when interfacing with high-resolution analog-to-digital converters (ADCs). The INA848 provides the flexibility of adding filters between the gain stages (pins 2 and 3) to maintain an adequate signal integrity.

These unique features of the INA848 make this device an excellent choice for applications requiring high-precision measurements, such as high-end medical instrumentation, electroencephalography, vibration sensing, and displacement measurements.

This device is designed for 8-V to 36-V single supplies, or ±4-V to ±18-V on dual supplies.
filter 尋找其它 儀器放大器
下載 觀看有字幕稿的影片 影片

您可能會感興趣的類似產品

open-in-new 比較替代產品
功能相同，但引腳輸出與所比較的裝置不同
INA849 現行 超低雜訊 (1nV/√Hz)、高速 (28MHz、35V/μs)、精密 (35μV) 儀器放大器 Resistor set gain version
INA851 現行 具有 OVP (±40 V) 的低雜訊 (3.2 nV/√Hz) 高速 (22 MHz) 全差動儀器放大器 Fully differential output, overvoltage protection (±60 V) and attenuation gain.

技術文件

star =TI 所選的此產品重要文件
找不到結果。請清除您的搜尋條件，然後再試一次。
檢視所有 3
重要文件 類型 標題 格式選項 日期
* Data sheet INA848 Ultra-Low-Noise (1.5 nV/√Hz), High-Bandwidth Instrumentation Amplifier With Fixed Gain of 2000 datasheet PDF | HTML 2020年 9月 24日
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021年 7月 27日
Technical article What is an instrumentation amplifier? PDF | HTML 2019年 8月 9日

設計與開發

如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。

模擬型號

INA848 PSpice Model (Rev. B)

SBOMBI4B.ZIP (24 KB) - PSpice Model
下載
模擬型號

INA848 TINA-TI Reference Design

SBOMBI5.TSC (40 KB) - TINA-TI Reference Design
下載
模擬型號

INA848 TINA-TI Spice Model

SBOMBI3.ZIP (23 KB) - TINA-TI Spice Model
下載
計算工具

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 (...)

支援產品和硬體

支援產品和硬體
啟動 下載
模擬工具

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。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
要求
模擬工具

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 (...)
使用指南: PDF
View Options
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian
適用 TI 的評估品項標準條款與條件。

訂購與品質

內含資訊：
  • RoHS
  • REACH
  • 產品標記
  • 鉛塗層/球物料
  • MSL 等級/回焊峰值
  • MTBF/FIT 估算值
  • 材料內容
  • 認證摘要
  • 進行中的可靠性監測
內含資訊：
  • 晶圓廠位置
  • 組裝地點

支援與培訓

內含 TI 工程師技術支援的 TI E2E™ 論壇

以英文檢視所有論壇主題

內容係由 TI 和社群貢獻者依「現狀」提供，且不構成 TI 規範。檢視使用條款。

若有關於品質、封裝或訂購 TI 產品的問題，請參閱 TI 支援。​​​​​​​​​​​​​​

影片