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INA630

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精密、低功率、間接電流回饋儀器放大器

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產品規格表

INA630

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) 4.5 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 20 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 40 Features Super Beta CMRR (min) (dB) 130 Input offset drift (±) (max) (µV/°C) 2 Input bias current (±) (max) (nA) 10 Iq (typ) (mA) 0.3 Bandwidth at min gain (typ) (MHz) 0.55 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Input common mode headroom (to negative supply) (typ) (V) 1.5 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 2
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4.5 Input offset (±) (max) (µV) 250 Voltage gain (min) (V/V) 20 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 40 Features Super Beta CMRR (min) (dB) 130 Input offset drift (±) (max) (µV/°C) 2 Input bias current (±) (max) (nA) 10 Iq (typ) (mA) 0.3 Bandwidth at min gain (typ) (MHz) 0.55 Gain error (±) (max) (%) 0.1 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Gain nonlinearity (±) (max) (%) 0.001 Input common mode headroom (to negative supply) (typ) (V) 1.5 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 2
SOT-23-THN (DDF) 8 8.12 mm² (2.9 mm × 2.8 mm)
  • Optimized for cost and size sensitive applications
  • Super-beta bipolar precision:
    • High common-mode rejection: 126dB (minimum) for G = 20V/V to 1000V/V
    • Low offset voltage: 60µV (typical), 350µV (maximum)
    • Low offset voltage drift: 0.7µV/°C (typical), 2µV/°C (maximum)
    • Low gain non-linearity: 10ppm (G = 100V/V) (maximum)
    • High power supply rejection: 123dB (minimum) for G = 20V/V to 1000V/V
    • Voltage noise density: 40nV/√Hz at f = 1kHz
  • Gain set with external resistor divider for G ≥ 20V/V
    • Maximum differential input voltages of ±125mV
  • Bandwidth: 550kHz (G = 20), 100kHz (G = 100)
  • Supply range:
    • Single-supply: 4.5V to 36V
    • Dual-supply: ±2.25V to ±18V
    • Supply current: 300µA (typical)
  • Specified temperature range: –40°C to +125°C
  • Optimized for cost and size sensitive applications
  • Super-beta bipolar precision:
    • High common-mode rejection: 126dB (minimum) for G = 20V/V to 1000V/V
    • Low offset voltage: 60µV (typical), 350µV (maximum)
    • Low offset voltage drift: 0.7µV/°C (typical), 2µV/°C (maximum)
    • Low gain non-linearity: 10ppm (G = 100V/V) (maximum)
    • High power supply rejection: 123dB (minimum) for G = 20V/V to 1000V/V
    • Voltage noise density: 40nV/√Hz at f = 1kHz
  • Gain set with external resistor divider for G ≥ 20V/V
    • Maximum differential input voltages of ±125mV
  • Bandwidth: 550kHz (G = 20), 100kHz (G = 100)
  • Supply range:
    • Single-supply: 4.5V to 36V
    • Dual-supply: ±2.25V to ±18V
    • Supply current: 300µA (typical)
  • Specified temperature range: –40°C to +125°C

The INA630 is a high-precision instrumentation amplifier that offers low power consumption and operates over a wide single-supply or dual-supply range. The INA630 is optimized for small differential voltages (±125mV maximum) while providing excellent common-mode suppression (126dB CMRR). The INA630 offers flexible gain setting with an external resistor divider of minimum G = 20V/V.

The INA630 is based on an indirect current feedback architecture that offers low gain error and non-linearity. Due to the architecture the reference pin impedance does not degrade the CMRR performance. The device enables wider input and output voltage range compared to traditional instrumentation amplifiers. The device has high precision as a result of super-beta input transistors, which provide low input offset voltage, offset voltage drift, low bias current and current noise.

The INA630 is a high-precision instrumentation amplifier that offers low power consumption and operates over a wide single-supply or dual-supply range. The INA630 is optimized for small differential voltages (±125mV maximum) while providing excellent common-mode suppression (126dB CMRR). The INA630 offers flexible gain setting with an external resistor divider of minimum G = 20V/V.

The INA630 is based on an indirect current feedback architecture that offers low gain error and non-linearity. Due to the architecture the reference pin impedance does not degrade the CMRR performance. The device enables wider input and output voltage range compared to traditional instrumentation amplifiers. The device has high precision as a result of super-beta input transistors, which provide low input offset voltage, offset voltage drift, low bias current and current noise.

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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 INA630 Precision, 126dB CMRR, Indirect Current Feedback Instrumentation Amplifier datasheet (Rev. A) PDF | HTML 2025/7/2
Product overview Improving Signal Chain Performance with Alternative IA Topologies PDF | HTML 2025/7/16

設計與開發

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開發板

INA630EVM — INA630 評估模組

INA630 評估模組 (EVM) 設計允許 4.5V 至 36V DC 電源供應器透過香蕉介面進行連接。輸入訊號和輸出訊號也透過香蕉介面連接。EVM 上的增益是使用 0805 分離式電阻器或 RES11A 電阻器網路設定。電壓參考配置是使用跨接器或香蕉介面連接進行配置。重要訊號也可使用測試點連接來連接。
使用指南: PDF | HTML
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模擬型號

INA630 PSpice Reference Design

SBOMCN9.ZIP (669 KB) - PSpice 模型
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模擬型號

INA630 TINA-TI Reference Design

SBOMCO0 (13 KB) - TINA-TI 參考設計
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模擬型號

INA630 TINA-TI SPICE Model

SBOMCO1.ZIP (2 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-010086 — 數位控制成本最佳化的 10 A 電池化成與測試參考設計

此參考設計為多通道電池化成與測試應用提供符合成本效益的設計。此設計使用 C2000™ 即時微控制器 (MCU) 與 16 通道同時取樣精密 ADC，可進行垂直擴展擴充以支援 8 通道電池芯測試。此設計運用 HRPWM 模組進行精確的工作週期控制，以達到精密數位類比轉換器的性能，進而節省超過 30% 的物料清單成本。MCU 整合 2p2z 控制，可用於恆定電流 (CC) 及恆定電壓 (CV) 控制運作。多通道 ADC 可將軟體中電流和電壓迴路的靈活性最佳化。此設計允許以單一方式進行多種電流與電壓位準輸出。

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SOT-23-THN (DDF) 8 Ultra Librarian
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