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INA350

現行

採用 8 接腳 WSON (2 mm x 2 mm) 封裝的低功耗 (100 µA) 可選增益儀器放大器

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產品規格表

INA350

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) 1200 Voltage gain (min) (V/V) 10 Voltage gain (max) (V/V) 50 Noise at 1 kHz (typ) (nV√Hz) 43 Features Cost Optimized, Shutdown CMRR (min) (dB) 85 Iq (typ) (mA) 0.1 Bandwidth at min gain (typ) (MHz) 0.1 Gain error (±) (max) (%) 0.6 Operating temperature range (°C) -40 to 125 Rating Catalog Type Selectable gain 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) 4
Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 1.8 Input offset (±) (max) (µV) 1200 Voltage gain (min) (V/V) 10 Voltage gain (max) (V/V) 50 Noise at 1 kHz (typ) (nV√Hz) 43 Features Cost Optimized, Shutdown CMRR (min) (dB) 85 Iq (typ) (mA) 0.1 Bandwidth at min gain (typ) (MHz) 0.1 Gain error (±) (max) (%) 0.6 Operating temperature range (°C) -40 to 125 Rating Catalog Type Selectable gain 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) 4
X2QFN (RUG) 10 3 mm² (1.5 mm × 2 mm) WSON (DSG) 8 4 mm² (2 mm × 2 mm) SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm)
  • Ideal for size, cost, and power conscious designs
  • Selectable gain options
    • G = 10 or G = 20 (INA350ABS)
    • G = 30 or G = 50 (INA350CDS)
  • Space saving ultra-small package options
    • 10-pin X2QFN (RUG) – 3 mm 2
    • 8-pin WSON (DSG) – 4 mm 2
    • 8-pin SOT23-THN (DDF) – 4.64 mm 2
  • Optimized performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typical) across all gains
    • Offset voltage: 0.2 mV (typical) across all gains
    • Gain error (typical):
      • 0.05% for G = 10; 0.06% for G = 20
      • 0.075% for G = 30; 0.082% for G = 50
  • Bandwidth: 100 kHz for G = 10 (typical)
  • Drives 500 pF with less than 20% overshoot (typical)
  • Optimized quiescent current: 100 µA (typical)
  • Shutdown option for power conscious applications
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C
  • Ideal for size, cost, and power conscious designs
  • Selectable gain options
    • G = 10 or G = 20 (INA350ABS)
    • G = 30 or G = 50 (INA350CDS)
  • Space saving ultra-small package options
    • 10-pin X2QFN (RUG) – 3 mm 2
    • 8-pin WSON (DSG) – 4 mm 2
    • 8-pin SOT23-THN (DDF) – 4.64 mm 2
  • Optimized performance for 10-bit to 14-bit systems
    • CMRR: 95 dB (typical) across all gains
    • Offset voltage: 0.2 mV (typical) across all gains
    • Gain error (typical):
      • 0.05% for G = 10; 0.06% for G = 20
      • 0.075% for G = 30; 0.082% for G = 50
  • Bandwidth: 100 kHz for G = 10 (typical)
  • Drives 500 pF with less than 20% overshoot (typical)
  • Optimized quiescent current: 100 µA (typical)
  • Shutdown option for power conscious applications
  • Supply range: 1.8 V (±0.9 V) to 5.5 V (±2.75 V)
  • Specified temperature range: –40°C to 125°C

INA350 is a selectable-gain instrumentation amplifier that offers four gain options across INA350ABS and INA350CDS variants available in small packages. INA350ABS has gain options of 10 or 20 and INA350CDS has gain options of 30 or 50. These gain options can be selected by toggling the gain select (GS) pin. INA350 is ideal for bridge-type sensing and for differential to single-ended conversion applications.

Built with precision matched integrated resistors, INA350 saves on bill of materials (BOM) costs, pick-and-place machine handling costs, and board space by removing the need for precise or closely-matched external resistors. The device interface directly to low-speed, 10-bit to 14-bit, analog-to-digital converters (ADC) and is ideal for replacing discrete implementation of instrumentation amplifiers built with commodity amplifiers and discrete resistors.

Designed with the three-amplifier architecture, INA350 is optimized for delivering performance. It achieves 85 dB of minimum CMRR and 0.6% of maximum gain error, along with 1.2 mV of maximum offset across all gain options, while consuming just 125 µA of maximum quiescent current. It has an integrated shutdown option to turn off the amplifier when idle for additional power savings in battery powered applications.

INA350 is a selectable-gain instrumentation amplifier that offers four gain options across INA350ABS and INA350CDS variants available in small packages. INA350ABS has gain options of 10 or 20 and INA350CDS has gain options of 30 or 50. These gain options can be selected by toggling the gain select (GS) pin. INA350 is ideal for bridge-type sensing and for differential to single-ended conversion applications.

Built with precision matched integrated resistors, INA350 saves on bill of materials (BOM) costs, pick-and-place machine handling costs, and board space by removing the need for precise or closely-matched external resistors. The device interface directly to low-speed, 10-bit to 14-bit, analog-to-digital converters (ADC) and is ideal for replacing discrete implementation of instrumentation amplifiers built with commodity amplifiers and discrete resistors.

Designed with the three-amplifier architecture, INA350 is optimized for delivering performance. It achieves 85 dB of minimum CMRR and 0.6% of maximum gain error, along with 1.2 mV of maximum offset across all gain options, while consuming just 125 µA of maximum quiescent current. It has an integrated shutdown option to turn off the amplifier when idle for additional power savings in battery powered applications.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 INA350 Cost and Size Optimized, Low Power, 1.8-V to 5.5-V Selectable Gain Instrumentation Amplifier datasheet (Rev. C) PDF | HTML 2023/5/10
設計指南 Low-Cost Blood Pressure and Heart Rate Monitor Reference Design PDF | HTML 2023/12/19
類比設計期刊 比較雙電源分離式與整合式儀器放大器 PDF | HTML Download English Version PDF | HTML 2023/12/1
Product overview Small-Size INA35x Versus Discrete Instrumentation Amps (Rev. A) PDF | HTML 2023/1/31
Product overview Bridge Sensor Solution (Rev. A) PDF | HTML 2023/1/27

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

INA-DDF-EVM — 適用採 DDF 封裝之儀器放大器的評估模組

INA-DDF-EVM 是採 DDF 封裝，且與各種儀器放大器 (IA) 相容的評估模組 (EVM)。其旨在評估單電源和雙電源配置的裝置性能。
使用指南: PDF | HTML
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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
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模擬型號

Bridge Sensor Solution TINA-TI Reference Design

SBOMC56.ZIP (68 KB) - TINA-TI 參考設計
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模擬型號

INA350 G10 PSpice Model (Rev. C)

SBOMBZ2C.ZIP (47 KB) - PSpice 模型
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模擬型號

INA350 G10 TINA-TI Reference Design (Rev. C)

SBOMBY6C (65 KB) - TINA-TI 參考設計
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模擬型號

INA350 G10 TINA-TI Spice Model (Rev. B)

SBOMBY8B.ZIP (5 KB) - TINA-TI Spice 模型
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模擬型號

INA350 G20 PSpice Model (Rev. C)

SBOMBY9C.ZIP (20 KB) - PSpice 模型
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模擬型號

INA350 G20 TINA-TI Reference Design (Rev. C)

SBOMBZ1C (65 KB) - TINA-TI 參考設計
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模擬型號

INA350 G20 TINA-TI Spice Model (Rev. B)

SBOMBZ0B.ZIP (5 KB) - TINA-TI Spice 模型
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模擬型號

INA350 G30 PSpice Model (Rev. C)

SBOMBZ4C.ZIP (16 KB) - PSpice 模型
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模擬型號

INA350 G30 TINA-TI Reference Design (Rev. C)

SBOMBZ6C (65 KB) - TINA-TI 參考設計
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模擬型號

INA350 G30 TINA-TI Spice Model (Rev. B)

SBOMBZ5B.ZIP (5 KB) - TINA-TI Spice 模型
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模擬型號

INA350 G50 PSpice Model (Rev. D)

SBOMBZ8D.ZIP (16 KB) - PSpice 模型
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模擬型號

INA350 G50 TINA-TI Reference Design (Rev. C)

SBOMBZ9C (65 KB) - TINA-TI 參考設計
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模擬型號

INA350 G50 TINA-TI Spice Model (Rev. B)

SBOMC00B.ZIP (5 KB) - TINA-TI Spice 模型
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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參考設計

TIDA-010266 — 低成本血壓和心律監測儀參考設計

此參考設計適用於低成本電子血壓監測器 (BPM) 或血壓計，著重於使用我們的微控制器 (MCU) 整合截波放大器和小型外部放大器實現低雜訊性能。此設計針對可攜式電池供電設備，並展示了如何利用具有整合精密類比功能的 MSPM0L1306 來降低成本和減少外部元件。設計人員可以改用 INA350 來評估替代的低成本架構，並使用提供的圖形使用者介面 (GUI) 測試我們最小的馬達和泵驅動器 DRV8210。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
X2QFN (RUG) 10 Ultra Librarian
WSON (DSG) 8 Ultra Librarian
SOT-23-THN (DDF) 8 Ultra Librarian
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