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Amplificadores de transimpedancia

OPA380

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Amplificador de transimpedancia de precisión, simple y de alta velocidad

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OPA380

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Detalles del producto

Number of channels 1 GBW (typ) (MHz) 90 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Vos (offset voltage at 25°C) (max) (mV) 0.025 Rail-to-rail In to V- Features Integrated TIA BW at Acl (MHz) 90 Operating temperature range (°C) -40 to 125 Rating Catalog
Number of channels 1 GBW (typ) (MHz) 90 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 5.5 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 2.7 Vos (offset voltage at 25°C) (max) (mV) 0.025 Rail-to-rail In to V- Features Integrated TIA BW at Acl (MHz) 90 Operating temperature range (°C) -40 to 125 Rating Catalog
SOIC (D) 8 29.4 mm² 4.9 x 6 VSSOP (DGK) 8 14.7 mm² 3 x 4.9
  • > 1MHz TRANSIMPEDANCE BANDWIDTH
  • EXCELLENT LONG-TERM VOS STABILITY
  • BIAS CURRENT: 50pA (max)
  • OFFSET VOLTAGE: 25µV (max)
  • DYNAMIC RANGE: 4 to 5 Decades
  • DRIFT: 0.1µV/°C (max)
  • GAIN BANDWIDTH: 90MHz
  • QUIESCENT CURRENT: 7.5mA
  • SUPPLY RANGE: 2.7V to 5.5V
  • SINGLE AND DUAL VERSIONS
  • MicroSIZE PACKAGE: MSOP-8
  • APPLICATIONS
    • PHOTODIODE MONITORING
    • PRECISION I/V CONVERSION
    • OPTICAL AMPLIFIERS
    • CAT-SCANNER FRONT-END

All trademarks are the property of their respective owners.
  • > 1MHz TRANSIMPEDANCE BANDWIDTH
  • EXCELLENT LONG-TERM VOS STABILITY
  • BIAS CURRENT: 50pA (max)
  • OFFSET VOLTAGE: 25µV (max)
  • DYNAMIC RANGE: 4 to 5 Decades
  • DRIFT: 0.1µV/°C (max)
  • GAIN BANDWIDTH: 90MHz
  • QUIESCENT CURRENT: 7.5mA
  • SUPPLY RANGE: 2.7V to 5.5V
  • SINGLE AND DUAL VERSIONS
  • MicroSIZE PACKAGE: MSOP-8
  • APPLICATIONS
    • PHOTODIODE MONITORING
    • PRECISION I/V CONVERSION
    • OPTICAL AMPLIFIERS
    • CAT-SCANNER FRONT-END

All trademarks are the property of their respective owners.

The OPA380 family of transimpedance amplifiers provides high-speed (90MHz Gain Bandwidth [GBW]) operation, with extremely high precision, excellent long-term stability, and very low 1/f noise. It is ideally suited for high-speed photodiode applications. The OPA380 features an offset voltage of 25µV, offset drift of 0.1µV/°C, and bias current of 50pA. The OPA380 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide.

The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 90MHz GBW of the OPA380 enables a transimpedance bandwidth of > 1MHz in most configurations. The OPA380 is ideally suited for fast control loops for power level on an optical fiber.

As a result of the high precision and low-noise characteristics of the OPA380, a dynamic range of 4 to 5 decades can be achieved. For example, this capability allows the measurement of signal currents on the order of 1nA, and up to 100µA in a single I/V conversion stage. In contrast to logarithmic amplifiers, the OPA380 provides very wide bandwidth throughout the full dynamic range. By using an external pull-down resistor to -5V, the output voltage range can be extended to include 0V.

The OPA380 (single) is available in MSOP-8 and SO-8 packages. The OPA2380 (dual) is available in the miniature MSOP-8 package. They are specified from -40°C to +125°C.

The OPA380 family of transimpedance amplifiers provides high-speed (90MHz Gain Bandwidth [GBW]) operation, with extremely high precision, excellent long-term stability, and very low 1/f noise. It is ideally suited for high-speed photodiode applications. The OPA380 features an offset voltage of 25µV, offset drift of 0.1µV/°C, and bias current of 50pA. The OPA380 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide.

The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 90MHz GBW of the OPA380 enables a transimpedance bandwidth of > 1MHz in most configurations. The OPA380 is ideally suited for fast control loops for power level on an optical fiber.

As a result of the high precision and low-noise characteristics of the OPA380, a dynamic range of 4 to 5 decades can be achieved. For example, this capability allows the measurement of signal currents on the order of 1nA, and up to 100µA in a single I/V conversion stage. In contrast to logarithmic amplifiers, the OPA380 provides very wide bandwidth throughout the full dynamic range. By using an external pull-down resistor to -5V, the output voltage range can be extended to include 0V.

The OPA380 (single) is available in MSOP-8 and SO-8 packages. The OPA2380 (dual) is available in the miniature MSOP-8 package. They are specified from -40°C to +125°C.
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Documentación técnica

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Documentación principal Tipo Título Opciones de formato Fecha
* Data sheet Precision, High-Speed Transimpedance Amplifier datasheet (Rev. G) 10 sep 2007
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 mar 2017

Diseño y desarrollo

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Modelo de simulación

OPA380 PSpice Model (Rev. B)

SBOC035B.ZIP (63 KB) - PSpice Model
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Modelo de simulación

OPA380 TINA-TI Reference Design (Rev. B)

SBOC105B.TSC (113 KB) - TINA-TI Reference Design
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Modelo de simulación

OPA380 TINA-TI Spice Model (Rev. A)

SBOM186A.ZIP (7 KB) - TINA-TI Spice Model
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Herramienta de cálculo

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Herramienta de simulación

PSPICE-FOR-TI — PSpice® para herramienta de diseño y simulación de TI

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TINA-TI — Programa de simulación analógica basado en SPICE

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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SOIC (D) 8 Ultra Librarian
VSSOP (DGK) 8 Ultra Librarian
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Pedidos y calidad

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  • Lugar de fabricación
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