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INA317

現行

微功耗 (50µA)、零漂移 (75µV 偏移、0.3µV/˚C)、精密 RRO 儀器放大器

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產品規格表

INA317

現行
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) 75 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 50 Features Zero Drift CMRR (min) (dB) 100 Input offset drift (±) (max) (µV/°C) 0.3 Input bias current (±) (max) (nA) 0.2 Iq (typ) (mA) 0.05 Bandwidth at min gain (typ) (MHz) 0.15 Gain error (±) (max) (%) 0.25 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Output swing headroom (to negative supply) (typ) (V) 0.05 Output swing headroom (to positive supply) (typ) (V) -0.05 Input common mode headroom (to negative supply) (typ) (V) 0.1 Input common mode headroom (to positive supply) (typ) (V) -0.1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 1
Number of channels 1 Vs (max) (V) 5.5 Vs (min) (V) 1.8 Input offset (±) (max) (µV) 75 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 50 Features Zero Drift CMRR (min) (dB) 100 Input offset drift (±) (max) (µV/°C) 0.3 Input bias current (±) (max) (nA) 0.2 Iq (typ) (mA) 0.05 Bandwidth at min gain (typ) (MHz) 0.15 Gain error (±) (max) (%) 0.25 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Output swing headroom (to negative supply) (typ) (V) 0.05 Output swing headroom (to positive supply) (typ) (V) -0.05 Input common mode headroom (to negative supply) (typ) (V) 0.1 Input common mode headroom (to positive supply) (typ) (V) -0.1 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 1
VSSOP (DGK) 8 14.7 mm² (3 mm × 4.9 mm)
  • Low Offset Voltage: 75 µV (Maximum), G ≥ 100
  • Low Drift: 0.3 µV/°C, G ≥ 100
  • Low Noise: 50 nV/√Hz, G ≥ 100
  • High CMRR: 100 dB (Minimum), G ≥ 10
  • Low Input Bias Current: 200 pA (Maximum)
  • Supply Range: 1.8 V to 5.5 V
  • Input Voltage: (V–) 0.1 V to (V+) –0.1 V
  • Output Range: (V–) 0.05 V to (V+) –0.05 V
  • Low Quiescent Current: 50 µA
  • Operating Temperature: –40°C to +125°C
  • RFI Filtered Inputs
  • 8-Pin VSSOP Package
  • Low Offset Voltage: 75 µV (Maximum), G ≥ 100
  • Low Drift: 0.3 µV/°C, G ≥ 100
  • Low Noise: 50 nV/√Hz, G ≥ 100
  • High CMRR: 100 dB (Minimum), G ≥ 10
  • Low Input Bias Current: 200 pA (Maximum)
  • Supply Range: 1.8 V to 5.5 V
  • Input Voltage: (V–) 0.1 V to (V+) –0.1 V
  • Output Range: (V–) 0.05 V to (V+) –0.05 V
  • Low Quiescent Current: 50 µA
  • Operating Temperature: –40°C to +125°C
  • RFI Filtered Inputs
  • 8-Pin VSSOP Package

The INA317 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-operational amplifier design, small size and low power make the INA317 usable in a wide range of portable applications.

A single external resistor sets any gain from 1 to 1000, as defined by the industry-standard gain equation: G = 1 + (100 kΩ / RG).

The instrumentation amplifier provides low offset voltage (75 µV, G ≥ 100), excellent offset voltage drift
(0.3 µV/°C, G ≥ 100) and high common-mode rejection (100 dB at G ≥ 10). The INA317 operates with power supplies as low as 1.8 V (±0.9 V) and a quiescent current of 50 µA, making the device usable in battery-operated systems. Using autocalibration techniques to ensure precision over the extended industrial temperature range, the INA317 device offers low noise density (50 nV/√Hz) that extends down to DC.

The INA317 is available in an 8-pin VSSOP surface-mount package and is specified over the TA = –40°C to +125°C temperature range.

The INA317 is a low-power, precision instrumentation amplifier offering excellent accuracy. The versatile 3-operational amplifier design, small size and low power make the INA317 usable in a wide range of portable applications.

A single external resistor sets any gain from 1 to 1000, as defined by the industry-standard gain equation: G = 1 + (100 kΩ / RG).

The instrumentation amplifier provides low offset voltage (75 µV, G ≥ 100), excellent offset voltage drift
(0.3 µV/°C, G ≥ 100) and high common-mode rejection (100 dB at G ≥ 10). The INA317 operates with power supplies as low as 1.8 V (±0.9 V) and a quiescent current of 50 µA, making the device usable in battery-operated systems. Using autocalibration techniques to ensure precision over the extended industrial temperature range, the INA317 device offers low noise density (50 nV/√Hz) that extends down to DC.

The INA317 is available in an 8-pin VSSOP surface-mount package and is specified over the TA = –40°C to +125°C temperature range.
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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 INA317 Micro-Power (50-µA), Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier datasheet PDF | HTML 2017/11/21
應用說明 Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 2021/7/27
Application brief Zero-Drift Amplifiers: Features and Benefits (Rev. C) 2021/1/28
Application brief Comprehensive Error Calculation for Instrumentation Amplifiers 2019/3/26
類比設計期刊 Measuring the linear operating region of instrumentation amplifiers 2016/10/24
類比設計期刊 VCM vs. VOUT plots for instrumentation amplifiers with two op amps 2015/10/30

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

INA317 PSpice Model (Rev. B)

SBOMAQ9B.ZIP (26 KB) - PSpice 模型
支援產品和硬體
模擬型號

INA317 TINA-TI Reference Design (Rev. A)

SBOMAQ7A.TSC (1395 KB) - TINA-TI 參考設計
支援產品和硬體
模擬型號

INA317 TINA-TI Spice Model (Rev. A)

SBOMAQ8A.ZIP (11 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-010005 — 軟體可配置心臟節律器偵測模組參考設計

此參考設計採用精巧的硬體架構電路，可在 ECG 量測期間偵測心臟節律器脈衝。它透過旗標和板載 LED 提供有效心律訊號指示。此設計讓使用者能透過板載 DAC 使用軟體來配置心律訊號的各種參數（振幅、上升時間、脈衝持續時間、極性）。測量值可透過板載 ADC 讀取。心律訊號從電路板上的雜訊 ECG 訊號中擷取，並進行放大與調節。與 TI ADS129X 系列裝置配合使用時，具有心律偵測功能。
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參考設計

TIDA-010019 — 溫度感測器中適用於冷接點補償參考設計的 RTD 更換

使用熱電偶 (TC) 的溫度感測應用需要準確的本機溫度感測器來實現高準確度。此參考設計強調並說明例如冷接點補償 (CJC) 或包含超低功耗 TC 類比前端等設計挑戰的解決方案。關於功耗和準確度方面的性能，針對準確的 4 到 20mA 的感測器已進行最佳化，同時也展示了不同 CJC 和 TC 前端實作的性能。
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
VSSOP (DGK) 8 Ultra Librarian
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