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OPA847

AKTIV

Extrem rauscharmer Breitband-Operationsverstärker mit Spannungsrückkopplung und Abschaltung

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OPA892 AKTIV Stabiler Operationsverstärker mit 2 GHz, 10 V/V, 0,95 nV√Hz, mit extrem niedriger harmonischer Gesam Wider Voltage (36 V), lower Iq (7.5 mA), lower offset drift (1 µV/°C), and lower THD + N ( -114 dB)

OPA847

AKTIV
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Produktdetails

Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 3900 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 12 Slew rate (typ) (V/µs) 950 Vn at flatband (typ) (nV√Hz) 0.85 Vn at 1 kHz (typ) (nV√Hz) 1.4 Iq per channel (typ) (mA) 18.1 Vos (offset voltage at 25°C) (max) (mV) 0.6 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 110 Input bias current (max) (pA) 39000000 Offset drift (typ) (µV/°C) 0.25 Iout (typ) (mA) 75 2nd harmonic (dBc) 74 3rd harmonic (dBc) 103 Frequency of harmonic distortion measurement (MHz) 5
Architecture Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 10 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 3900 BW at Acl (MHz) 600 Acl, min spec gain (V/V) 12 Slew rate (typ) (V/µs) 950 Vn at flatband (typ) (nV√Hz) 0.85 Vn at 1 kHz (typ) (nV√Hz) 1.4 Iq per channel (typ) (mA) 18.1 Vos (offset voltage at 25°C) (max) (mV) 0.6 Rail-to-rail No Features Decompensated, Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 110 Input bias current (max) (pA) 39000000 Offset drift (typ) (µV/°C) 0.25 Iout (typ) (mA) 75 2nd harmonic (dBc) 74 3rd harmonic (dBc) 103 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • HIGH GAIN BANDWIDTH: 3.9GHz
  • LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
  • VERY LOW DISTORTION: –105dBc (5MHz)
  • HIGH SLEW RATE: 950V/µs
  • HIGH DC ACCURACY: VIO < ±100µV
  • LOW SUPPLY CURRENT: 18.1mA
  • LOW SHUTDOWN POWER: 2mW
  • STABLE FOR GAINS 12
  • APPLICATIONS
    • HIGH DYNAMIC RANGE ADC PREAMPS
    • LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
    • WIDEBAND, HIGH GAIN AMPLIFIERS
    • LOW NOISE DIFFERENTIAL RECEIVERS
    • ULTRASOUND CHANNEL AMPLIFIERS
    • IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642

All trademarks are the property of their respective owners.
  • HIGH GAIN BANDWIDTH: 3.9GHz
  • LOW INPUT VOLTAGE NOISE: 0.85nV/√Hz
  • VERY LOW DISTORTION: –105dBc (5MHz)
  • HIGH SLEW RATE: 950V/µs
  • HIGH DC ACCURACY: VIO < ±100µV
  • LOW SUPPLY CURRENT: 18.1mA
  • LOW SHUTDOWN POWER: 2mW
  • STABLE FOR GAINS 12
  • APPLICATIONS
    • HIGH DYNAMIC RANGE ADC PREAMPS
    • LOW NOISE, WIDEBAND, TRANSIMPEDANCE AMPLIFIERS
    • WIDEBAND, HIGH GAIN AMPLIFIERS
    • LOW NOISE DIFFERENTIAL RECEIVERS
    • ULTRASOUND CHANNEL AMPLIFIERS
    • IMPROVED UPGRADE FOR THE OPA687, CLC425, AND LMH6642

All trademarks are the property of their respective owners.

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV/√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.

The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-to-Digital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.

The OPA847 combines very high gain bandwidth and large signal performance with an ultra-low input noise voltage (0.85nV/√Hz) while using only 18mA supply current. Where power saving is critical, the OPA847 also includes an optional power shutdown pin that, when pulled low, disables the amplifier and decreases the supply current to < 1% of the powered-up value. This optional feature may be left disconnected to ensure normal amplifier operation when no power-down is required.

The combination of very low input voltage and current noise, along with a 3.9GHz gain bandwidth product, make the OPA847 an ideal amplifier for wideband transimpedance applications. As a voltage gain stage, the OPA847 is optimized for a flat frequency response at a gain of +20V/V and is stable down to gains as low as +12V/V. New external compensation techniques allow the OPA847 to be used at any inverting gain with excellent frequency response control. Using this technique in a differential Analog-to-Digital Converter (ADC) interface application, shown below, can deliver one of the highest dynamic range interfaces available.
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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet Wideband, Ultra Low-Noise, Voltage-Feedback Operational Amplifier with Shutdown datasheet (Rev. E) 30 Dez 2008
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mär 2017
Application note RLC Filter Design for ADC Interface Applications (Rev. A) 13 Mai 2015
User guide DEM-OPA-SO-1A User's Guide (Rev. B) 12 Apr 2012
User guide DEM-OPA-SO-1B User's Guide (Rev. D) 12 Apr 2012
User guide DEM-OPA-SOT-1A User's Guide (Rev. B) 12 Apr 2012
Application note Transimpedance Considerations for High-Speed Operational Amplifiers 22 Nov 2009
User guide Voltage-Controlled Amplifier Evaluation Kit 25 Aug 2008
User guide DEM-OPA-SOT-1B User's Guide (Rev. B) 12 Apr 2006
Analog Design Journal Low-power, high-intercept interface to the ADS5424, 105-MSPS converter 10 Okt 2005
Analog Design Journal Using a decompensated op amp for improved performance 11 Mär 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note ADS5500, OPA695: PC Board Layout for Low Distortion High-Speed ADC Drivers 22 Apr 2004
Application note Measuring Board Parasitics in High-Speed Analog Design 07 Jul 2003

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

DEM-OPA-SO-1B — Evaluierungsmodul mit einem Operationsverstärker für SO-8-Gehäuse (nicht invertierend)

The DEM-OPA-SO-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

For more (...)

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

DEM-OPA-SOT-1B — Einzel-Operationsverstärker-Evaluierungsmodul für das Gehäuse SOT23-5/6 (nicht-invertierend)

The DEM-OPA-SOT-1B demonstration fixture in the non-inverting configuration helps designers evaluate the operation and performance of TI's single high speed, wideband operational amplifiers. This unpopulated PC board is compatible with products offered in the SOT23 (DBV) package.

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

OPA847 ADS Model

SBOJ018.ZIP (54 KB) - Spice Model
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Simulationsmodell

OPA847 PSpice Model

SBOC037.ZIP (1 KB) - PSpice Model
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Simulationsmodell

OPA847 PSpice Model (Rev. A)

SBOC037A.ZIP (2 KB) - PSpice Model
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Simulationsmodell

OPA847 TINA-TI Reference Design (Rev. C)

SBOC098C.TSC (54 KB) - TINA-TI Reference Design
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Simulationsmodell

OPA847 TINA-TI Spice Model (Rev. A)

SBOM180A.ZIP (6 KB) - TINA-TI Spice Model
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Berechnungstool

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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Berechnungstool

VOLT-DIVIDER-CALC — Voltage divider calculation tool

The voltage divider calculation tool (VOLT-DIVIDER-CALC) quickly determines a set of resistors for a voltage divider. This KnowledgeBase JavaScript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. VOLT-DIVIDER-CALC can also be used to (...)
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Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese Design- und Simulationssuite mit vollem Funktionsumfang verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
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Simulationstool

TINA-TI — SPICE-basiertes analoges Simulationsprogramm

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 (...)
Benutzerhandbuch: PDF
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Referenzdesigns

TIPD147 — Rauschmessnachverstärker für Oszilloskop oder Spektralanalysegerät

In some cases a scope or spectrum analyzer does not have the range required to measure very small noise levels.  This noise measurement post-amp boosts the output noise of the device under test (DUT) to allow for measurement with standard test equipment. The key requirements of this circuit is (...)
Benutzerhandbuch: PDF
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 6 Ultra Librarian
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Bestellen & Qualität

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  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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