OPA657

AKTIV

Rauscharmer Breitband-Operationsverstärker, FET-Eingang, 1,6 GHz

Eine neuere Version dieses Produkts ist verfügbar

Drop-In-Ersatz mit gegenüber dem verglichenen Baustein verbesserter Funktionalität
OPA818 AKTIV Dekompensierter Operationsverstärker mit 2,7 GHz, 13 V, 7 V/V, FET-Eingang This device has lower noise (2.2 nV/rtHz) and higher gain-bandwidth (2.7 GHz) 

Produktdetails

Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 1600 BW at Acl (MHz) 350 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 700 Vn at flatband (typ) (nV√Hz) 4.8 Vn at 1 kHz (typ) (nV√Hz) 7 Iq per channel (typ) (mA) 14 Vos (offset voltage at 25°C) (max) (mV) 1.8 Rail-to-rail No Features Decompensated Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 89 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 70 2nd harmonic (dBc) 74 3rd harmonic (dBc) 106 Frequency of harmonic distortion measurement (MHz) 5
Architecture FET / CMOS Input, Voltage FB Number of channels 1 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 8 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 1600 BW at Acl (MHz) 350 Acl, min spec gain (V/V) 7 Slew rate (typ) (V/µs) 700 Vn at flatband (typ) (nV√Hz) 4.8 Vn at 1 kHz (typ) (nV√Hz) 7 Iq per channel (typ) (mA) 14 Vos (offset voltage at 25°C) (max) (mV) 1.8 Rail-to-rail No Features Decompensated Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 89 Input bias current (max) (pA) 20 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 70 2nd harmonic (dBc) 74 3rd harmonic (dBc) 106 Frequency of harmonic distortion measurement (MHz) 5
SOIC (D) 8 29.4 mm² 4.9 x 6 SOT-23 (DBV) 5 8.12 mm² 2.9 x 2.8
  • High Gain Bandwidth Product: 1.6 GHz
  • High Bandwidth 275 MHz (G = 10)
  • Slew Rate 700 V/µs (G = 10, 1-V Step)
  • Available in High Grade With Improved DC
    Specifications
  • Operating Temperature Range: –40°C to 85°C
  • Low-Input Offset Voltage: ±250 µV
  • Low-Input Bias Current: 2 pA
  • Low-Input Voltage Noise: 4.8 nV/√Hz
  • High-Output Current: 70 mA
  • Fast Overdrive Recovery
  • High Gain Bandwidth Product: 1.6 GHz
  • High Bandwidth 275 MHz (G = 10)
  • Slew Rate 700 V/µs (G = 10, 1-V Step)
  • Available in High Grade With Improved DC
    Specifications
  • Operating Temperature Range: –40°C to 85°C
  • Low-Input Offset Voltage: ±250 µV
  • Low-Input Bias Current: 2 pA
  • Low-Input Voltage Noise: 4.8 nV/√Hz
  • High-Output Current: 70 mA
  • Fast Overdrive Recovery

The OPA657 device combines a high-gain bandwidth, low-distortion, voltage-feedback operational amplifier with a low-voltage noise JFET-input stage to offer a very high dynamic range amplifier for high-precision ADC (analog-to-digital converter) driving or wideband transimpedance applications. Photodiode applications see improved noise and bandwidth using this decompensated, high-gain bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6-GHz gain bandwidth product gives greater than 10-MHz signal bandwidths up to gains of 160 V/V (44 dB). The very low input bias current and capacitance supports this performance even for relatively high source impedances.

Broadband photodetector applications benefit from the low-voltage noise JFET inputs for the OPA657. The JFET input contributes virtually no current noise while for broadband applications, a low voltage noise is also required. The low 4.8 nV/√Hz input voltage noise provides exceptional input sensitivity for higher bandwidth applications. The example shown below gives a total equivalent input noise current of 1.8 pA/√Hz over a 10-MHz bandwidth.

The OPA657 device combines a high-gain bandwidth, low-distortion, voltage-feedback operational amplifier with a low-voltage noise JFET-input stage to offer a very high dynamic range amplifier for high-precision ADC (analog-to-digital converter) driving or wideband transimpedance applications. Photodiode applications see improved noise and bandwidth using this decompensated, high-gain bandwidth amplifier.

Very low level signals can be significantly amplified in a single OPA657 gain stage with exceptional bandwidth and accuracy. Having a high 1.6-GHz gain bandwidth product gives greater than 10-MHz signal bandwidths up to gains of 160 V/V (44 dB). The very low input bias current and capacitance supports this performance even for relatively high source impedances.

Broadband photodetector applications benefit from the low-voltage noise JFET inputs for the OPA657. The JFET input contributes virtually no current noise while for broadband applications, a low voltage noise is also required. The low 4.8 nV/√Hz input voltage noise provides exceptional input sensitivity for higher bandwidth applications. The example shown below gives a total equivalent input noise current of 1.8 pA/√Hz over a 10-MHz bandwidth.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet OPA657 1.6-GHz, Low-Noise, FET-Input Operational Amplifier datasheet (Rev. F) PDF | HTML 31 Aug 2015
Technical article 3 common questions when designing with high-speed amplifiers PDF | HTML 17 Jul 2020
Application note Transimpedance Amplifiers (TIA): Choosing the Best Amplifier for the job (Rev. A) 16 Mai 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mär 2017
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 DEM-OPA-SOT-1B User's Guide (Rev. B) 12 Apr 2006
Analog Design Journal Using a decompensated op amp for improved performance 11 Mär 2005
Analog Design Journal Designing for low distortion with high-speed op amps 02 Mär 2005
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
Application note Measuring Board Parasitics in High-Speed Analog Design 07 Jul 2003
Application note Voltage Feedback vs. Current Feedback Op Amps 30 Nov 1998

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-1A — Evaluierungsmodul für einen einzelnen Operationsverstärker für SO-8-Gehäuse

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

Benutzerhandbuch: PDF
Evaluierungsplatine

DEM-OPA-SOT-1A — Einzel-Operationsverstärker-Evaluierungsmodul für 5- und 6-polige SOT-23-Gehäuse

DEM-OPA-SOT-1A ist ein Demonstrationsplatine, die den Betrieb und die Leistung von Hochgeschwindigkeits-Operationsverstärkern mit großer Bandbreite evaluiert. Diese unbestückte Platine ist mit Produkten kompatibel, die im Small-Outline-Transistor-DBV-Gehäuse (SOT) angeboten werden.

Benutzerhandbuch: PDF
Simulationsmodell

OPA657 PSpice Model (Rev. F)

SBOM137F.ZIP (355 KB) - PSpice Model
Simulationsmodell

OPA657 TINA-TI Reference Design (Rev. C)

SBOC121C.TSC (2056 KB) - TINA-TI Reference Design
Simulationsmodell

OPA657 TINA-TI Spice Model (Rev. B)

SBOM196B.ZIP (13 KB) - TINA-TI Spice Model
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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Unterstützte Produkte und Hardware

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 (...)
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 (...)
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
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
SOIC (D) 8 Ultra Librarian
SOT-23 (DBV) 5 Ultra Librarian

Bestellen & Qualität

Beinhaltete Information:
  • RoHS
  • REACH
  • Bausteinkennzeichnung
  • Blei-Finish/Ball-Material
  • MSL-Rating / Spitzenrückfluss
  • MTBF-/FIT-Schätzungen
  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
Beinhaltete Information:
  • Werksstandort
  • Montagestandort

Support und Schulungen

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