首頁 放大器 儀器放大器
首頁
放大器
儀器放大器

INA351A

現行

具有整合式參考放大器的低功耗 (110 µA) 儀表放大器以提供校準

立即訂購
產品規格表

INA351A

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 1.8 Input offset (±) (max) (µV) 1300 Voltage gain (min) (V/V) 10 Voltage gain (max) (V/V) 50 Noise at 1 kHz (typ) (nV√Hz) 36 Features Cost Optimized, Low power, Small Size CMRR (min) (dB) 86 Iq (typ) (mA) 0.11 Bandwidth at min gain (typ) (MHz) 0.1 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) 0.015 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) 0 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 3.2
Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 1.8 Input offset (±) (max) (µV) 1300 Voltage gain (min) (V/V) 10 Voltage gain (max) (V/V) 50 Noise at 1 kHz (typ) (nV√Hz) 36 Features Cost Optimized, Low power, Small Size CMRR (min) (dB) 86 Iq (typ) (mA) 0.11 Bandwidth at min gain (typ) (MHz) 0.1 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Output swing headroom (to negative supply) (typ) (V) 0.015 Output swing headroom (to positive supply) (typ) (V) 0.015 Input common mode headroom (to negative supply) (typ) (V) 0 Input common mode headroom (to positive supply) (typ) (V) 0 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 3.2
WSON (DSG) 8 4 mm² 2 x 2
  • Fixed gain of 10V/V instrumentation amp with configurable reference amp
  • INA performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typical)
    • Gain error: 0.015% (typical)
    • Bandwidth: 100 kHz (typical)
  • Reference amp can be used for:
    • External DC error calibration with servo loop
    • Providing buffered voltage of external circuits
    • Filtering or adjustment of reference voltage
  • Ultra-small package option (2mm x 2mm)
  • Drives 1 nF with under 10% overshoot (typical)
  • Optimized quiescent current: 110 µA (typical)
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C
  • Fixed gain of 10V/V instrumentation amp with configurable reference amp
  • INA performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typical)
    • Gain error: 0.015% (typical)
    • Bandwidth: 100 kHz (typical)
  • Reference amp can be used for:
    • External DC error calibration with servo loop
    • Providing buffered voltage of external circuits
    • Filtering or adjustment of reference voltage
  • Ultra-small package option (2mm x 2mm)
  • Drives 1 nF with under 10% overshoot (typical)
  • Optimized quiescent current: 110 µA (typical)
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C

INA351A is a fixed gain of 10 instrumentation amplifier with a configurable reference amplifier in a small package. This instrumentation amp (INA) is built with precision-matched resistors to achieve excellent CMRR and gain error performance in a small, low-cost form factor. This makes INA351A a great solution to replace discrete INA implementations to achieve higher performance and more compact designs with minimal impact to bill of materials (BOM) costs.

The integrated, configurable reference amplifier can be used as a buffer for external use or as part of a closed-loop calibration circuit to achieve better DC precision. The closed-loop calibration can be accomplished by implementing a servo loop amplifier to calibrate DC errors from sensors (like offset, offset drift and so forth) at the INA output when the INA input signal is at a slightly higher frequency than DC depending on the application.

INA351A achieves 86 dB of minimum CMRR, an accurate 0.1% of maximum gain error and only consumes a maximum of 135 µA quiescent current at room temperature. The INA can directly drive sub-1 kHz, 10-bit to 14-bit, delta-sigma analog-to-digital converters (ADC) without an ADC driver, making it a great choice for portable, battery-powered medical applications like electrocardiograms or wearable health monitors.

INA351A is a fixed gain of 10 instrumentation amplifier with a configurable reference amplifier in a small package. This instrumentation amp (INA) is built with precision-matched resistors to achieve excellent CMRR and gain error performance in a small, low-cost form factor. This makes INA351A a great solution to replace discrete INA implementations to achieve higher performance and more compact designs with minimal impact to bill of materials (BOM) costs.

The integrated, configurable reference amplifier can be used as a buffer for external use or as part of a closed-loop calibration circuit to achieve better DC precision. The closed-loop calibration can be accomplished by implementing a servo loop amplifier to calibrate DC errors from sensors (like offset, offset drift and so forth) at the INA output when the INA input signal is at a slightly higher frequency than DC depending on the application.

INA351A achieves 86 dB of minimum CMRR, an accurate 0.1% of maximum gain error and only consumes a maximum of 135 µA quiescent current at room temperature. The INA can directly drive sub-1 kHz, 10-bit to 14-bit, delta-sigma analog-to-digital converters (ADC) without an ADC driver, making it a great choice for portable, battery-powered medical applications like electrocardiograms or wearable health monitors.
filter 尋找其它 儀器放大器
下載 觀看有字幕稿的影片 影片

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 1
重要文件 類型 標題 格式選項 日期
* Data sheet INA351A - Low Power, 1.8-V to 5.5-V Small-Size Instrumentation Amplifier with Configurable Reference Amplifier datasheet PDF | HTML 2023年 6月 12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)。

開發板

SMALL-AMP-DIP-EVM — 適用於採用小尺寸封裝之運算放大器的評估模組

SMALL-AMP-DIP-EVM 提供快速簡易方式，與許多業界標準小型封裝進行介接，因而加速小型封裝運算放大器原型設計。SMALL-AMP-DIP-EVM 支援八個小型封裝選項，包括 DPW-5 (X2SON)、DSG-8 (WSON)、DCN-8 (SOT)、DDF-8 (SOT)、RUG-10 (X2QFN)、RUC-14 (X2QFN)、RGY-14 (VQFN) 和 RTE-16 (WQFN)。

使用指南: PDF
TI.com 無法提供
模擬型號

INA351A PSpice Reference Design

SBOMCE8.ZIP (7 KB) - PSpice Model
下載
模擬型號

INA351A TINA-TI Reference Design

SBOMCE7.TSC (48 KB) - TINA-TI Reference Design
下載
模擬型號

INA351A TINA-TI SPICE Model

SBOMCE9.ZIP (7 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
WSON (DSG) 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