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INA149-EP

現行

強化型產品高共模電壓差動放大器

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產品規格表

INA149-EP

現行
產品規格表 立即訂購

產品詳細資料

Number of channels 1 Vs (min) (V) 2 Vs (max) (V) 18 CMRR (min) (dB) 84 Common-mode input low (min) (V) -275 Common-mode input high (max) (V) 275 Input offset (±) (max) (V) 0.0035 Iq (typ) (mA) 0.81 Slew rate (typ) (V/µs) 5 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 500000 Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125 Gain drift (max) (ppm/°C) 10 Gain error (±) (max) (%) 0.047
Number of channels 1 Vs (min) (V) 2 Vs (max) (V) 18 CMRR (min) (dB) 84 Common-mode input low (min) (V) -275 Common-mode input high (max) (V) 275 Input offset (±) (max) (V) 0.0035 Iq (typ) (mA) 0.81 Slew rate (typ) (V/µs) 5 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1 Small-signal bandwidth (typ) (Hz) 500000 Rating HiRel Enhanced Product Operating temperature range (°C) -55 to 125 Gain drift (max) (ppm/°C) 10 Gain error (±) (max) (%) 0.047
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Common-Mode Voltage Range: ±275 V
  • Minimum CMRR: 84 dB from –55°C to +125°C
  • DC Specifications:
    • Maximum Offset Voltage: 3500 µV
    • Maximum Gain Error: 0.047%
    • Maximum Gain Nonlinearity: 0.001% FSR at 25°C
  • AC Performance:
    • Bandwidth: 500 kHz
    • Typical Slew Rate: 5 V/µs
  • Wide Supply Range: ±2.0 V to ±18 V
    • Maximum Quiescent Current: 1100 µA
    • Output Swing on ±15-V Supplies: ±13.5 V
  • Input Protection:
    • Common-Mode: ±500 V
    • Differential: ±500 V
  • Common-Mode Voltage Range: ±275 V
  • Minimum CMRR: 84 dB from –55°C to +125°C
  • DC Specifications:
    • Maximum Offset Voltage: 3500 µV
    • Maximum Gain Error: 0.047%
    • Maximum Gain Nonlinearity: 0.001% FSR at 25°C
  • AC Performance:
    • Bandwidth: 500 kHz
    • Typical Slew Rate: 5 V/µs
  • Wide Supply Range: ±2.0 V to ±18 V
    • Maximum Quiescent Current: 1100 µA
    • Output Swing on ±15-V Supplies: ±13.5 V
  • Input Protection:
    • Common-Mode: ±500 V
    • Differential: ±500 V

The INA149 is a precision unity-gain difference amplifier with a very high input common-mode voltage range. It is a single, monolithic device that consists of a precision op amp and an integrated thin-film resistor network. The INA149 can accurately measure small differential voltages in the presence of common-mode signals up to ±275 V. The INA149 inputs are protected from momentary common-mode or differential overloads of up to
500 V.

In many applications, where galvanic isolation in not required, the INA149 can replace isolation amplifiers. This ability can eliminate costly isolated input side power supplies and the associated ripple, noise, and quiescent current. The excellent 0.0005% nonlinearity and 500-kHz bandwidth of the INA149 are superior to those of conventional isolation amplifiers.

The INA149 is pin-compatible with the INA117 and INA148 type high common-mode voltage amplifiers and offers improved performance over both devices. The INA149 is available in the SOIC-8 package with operation specified over the military temperature range of –55°C to +125°C.

The INA149 is a precision unity-gain difference amplifier with a very high input common-mode voltage range. It is a single, monolithic device that consists of a precision op amp and an integrated thin-film resistor network. The INA149 can accurately measure small differential voltages in the presence of common-mode signals up to ±275 V. The INA149 inputs are protected from momentary common-mode or differential overloads of up to
500 V.

In many applications, where galvanic isolation in not required, the INA149 can replace isolation amplifiers. This ability can eliminate costly isolated input side power supplies and the associated ripple, noise, and quiescent current. The excellent 0.0005% nonlinearity and 500-kHz bandwidth of the INA149 are superior to those of conventional isolation amplifiers.

The INA149 is pin-compatible with the INA117 and INA148 type high common-mode voltage amplifiers and offers improved performance over both devices. The INA149 is available in the SOIC-8 package with operation specified over the military temperature range of –55°C to +125°C.
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重要文件 類型 標題 格式選項 日期
* Data sheet High Common-Mode Voltage Difference Amplifier, INA149-EP datasheet (Rev. A) 2012年 4月 2日
* VID INA149-EP VID V6212614 2016年 6月 21日
* Radiation & reliability report INA149AMDREP Reliability Report 2012年 5月 7日
E-book The Signal e-book: A compendium of blog posts on op amp design topics 2017年 3月 28日

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INA149 PSpice Model

SBOMC47.ZIP (77 KB) - PSpice Model
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INA149 TINA-TI Reference Design

SBOM667.TSC (164 KB) - TINA-TI Reference Design
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INA149 TINA-TI Spice Model

SBOM668.ZIP (9 KB) - TINA-TI Spice Model
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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 (...)

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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 (...)
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