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OPA862

ACTIVO

Amplificador de alta impedancia de entrada de 12,6 V, de bajo ruido, de terminación simple a diferen

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OPA862

ACTIVO
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Detalles del producto

Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 44 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 140 Architecture Bipolar, Differential Amplifier, High Input Impedance Vn at flatband (typ) (nV√Hz) 2.3 Iq per channel (typ) (mA) 3.1 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.325 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 60 2nd harmonic (dBc) -122 3rd harmonic (dBc) -140 Frequency of harmonic distortion measurement (MHz) 0.05 GBW (typ) (MHz) 400 Input bias current (max) (pA) 3100000 Features Shutdown CMRR (typ) (dB) 120 Rating Catalog
Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12.6 BW at Acl (MHz) 44 Acl, min spec gain (V/V) 2 Slew rate (typ) (V/µs) 140 Architecture Bipolar, Differential Amplifier, High Input Impedance Vn at flatband (typ) (nV√Hz) 2.3 Iq per channel (typ) (mA) 3.1 Rail-to-rail Out Vos (offset voltage at 25°C) (max) (mV) 0.325 Operating temperature range (°C) -40 to 125 Iout (typ) (mA) 60 2nd harmonic (dBc) -122 3rd harmonic (dBc) -140 Frequency of harmonic distortion measurement (MHz) 0.05 GBW (typ) (MHz) 400 Input bias current (max) (pA) 3100000 Features Shutdown CMRR (typ) (dB) 120 Rating Catalog
SOIC (D) 8 29.4 mm² (4.9 mm × 6 mm) WSON (DTK) 8 9 mm² (3 mm × 3 mm)
  • Wide Supply Range: 3 V to 12.6 V
  • High Input Impedance: 325 MΩ
  • Voltage Noise:
    • Input-Referred (f ≥ 5 kHz): 2.3 nV/√ Hz
    • Output-Referred (f ≥ 10 kHz): 8.3 nV/√ Hz
  • Differential Output Offset: ±700 µV (Maximum)
  • Output Offset Drift: ±1.5 µV/°C (Typical)
  • A2 Bias Current Cancellation, IB: ±5 nA (Typical)
  • Gain-Bandwidth Product: 400 MHz
  • Small-Signal Bandwidth: 44 MHz (G = 2 V/V)
  • Slew Rate: 140 V/µs
  • HD2, HD3 (VOD = 10 VPP, 50 kHz): –122 dBc, –140 dBc
  • Rail-to-Rail Output:
    • High Linear Output Current: 60 mA (Typical)
  • Quiescent Current: 3.1 mA
  • Disable mode: 12-µA Quiescent Current
  • Extended Temperature Operation: –40°C to +125°C
  • Wide Supply Range: 3 V to 12.6 V
  • High Input Impedance: 325 MΩ
  • Voltage Noise:
    • Input-Referred (f ≥ 5 kHz): 2.3 nV/√ Hz
    • Output-Referred (f ≥ 10 kHz): 8.3 nV/√ Hz
  • Differential Output Offset: ±700 µV (Maximum)
  • Output Offset Drift: ±1.5 µV/°C (Typical)
  • A2 Bias Current Cancellation, IB: ±5 nA (Typical)
  • Gain-Bandwidth Product: 400 MHz
  • Small-Signal Bandwidth: 44 MHz (G = 2 V/V)
  • Slew Rate: 140 V/µs
  • HD2, HD3 (VOD = 10 VPP, 50 kHz): –122 dBc, –140 dBc
  • Rail-to-Rail Output:
    • High Linear Output Current: 60 mA (Typical)
  • Quiescent Current: 3.1 mA
  • Disable mode: 12-µA Quiescent Current
  • Extended Temperature Operation: –40°C to +125°C

The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driver with high input impedance for directly interfacing with sensors. The device only consumes 3.1-mA quiescent current for an output-referred noise density of 8.3 nV/√ Hz in a gain of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩ resistors must be less than 1 nV/√ Hz to achieve the OPA862 equivalent output-referred noise density of 8.3 nV/√ Hz. The OPA862 can be configured for other gains using external resistors. The device has a large gain-bandwidth product of 400 MHz and a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bit performance over comparable single-ended-to-differential ADC drivers. The device includes a reference input pin for setting the output common-mode voltage.

The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V, and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortion performance for 18-bit systems. The device includes a disable mode that consumes only 12-µA quiescent current in power-down state.

The OPA862 is rated to work over the extended industrial temperature range of –40°C to +125°C.

The OPA862 is a single-ended to differential analog-to-digital converter (ADC) driver with high input impedance for directly interfacing with sensors. The device only consumes 3.1-mA quiescent current for an output-referred noise density of 8.3 nV/√ Hz in a gain of 2-V/V configuration. A fully differential amplifier configured in a gain of 1 V/V with 1-kΩ resistors must be less than 1 nV/√ Hz to achieve the OPA862 equivalent output-referred noise density of 8.3 nV/√ Hz. The OPA862 can be configured for other gains using external resistors. The device has a large gain-bandwidth product of 400 MHz and a slew rate of 140 V/µs. This yields exceptional linearity and fast-settling, 18-bit performance over comparable single-ended-to-differential ADC drivers. The device includes a reference input pin for setting the output common-mode voltage.

The OPA862 is fully characterized to operate over a wide supply range of 3 V to 12.6 V, and features a rail-to-rail output stage. The device is fabricated using Texas Instruments’ proprietary, high-speed, silicon-germanium (SiGe) process and achieves exceptional distortion performance for 18-bit systems. The device includes a disable mode that consumes only 12-µA quiescent current in power-down state.

The OPA862 is rated to work over the extended industrial temperature range of –40°C to +125°C.
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Documentación principal Tipo Título Opciones de formato Descargar la versión más reciente en inglés Fecha
* Hoja de datos OPA862 High Input Impedance, Single-Ended to Differential ADC Driver datasheet (Rev. C) PDF | HTML 19/08/2020
Application brief Why Use an FDA to Drive an ADC? PDF | HTML 8/01/2026

Diseño y desarrollo

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Placa de evaluación

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