Home Verstärker Operationsverstärker (OpAmps) Hochgeschwindigkeits-Operationsverstärker (Transitfrequenz ≥ 50 MHz)

OPA3691

AKTIV

Dreifach-Breitband-Operationsverstärker mit Stromrückkopplung und Deaktivierung

Produktdetails

Architecture Current FB Number of channels 3 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 280 BW at Acl (MHz) 280 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2100 Vn at flatband (typ) (nV√Hz) 1.7 Vn at 1 kHz (typ) (nV√Hz) 1.7 Iq per channel (typ) (mA) 5.1 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 35000000 Offset drift (typ) (µV/°C) 20 Iout (typ) (mA) 190 2nd harmonic (dBc) 70 3rd harmonic (dBc) 74 Frequency of harmonic distortion measurement (MHz) 5
Architecture Current FB Number of channels 3 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 4 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 280 BW at Acl (MHz) 280 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2100 Vn at flatband (typ) (nV√Hz) 1.7 Vn at 1 kHz (typ) (nV√Hz) 1.7 Iq per channel (typ) (mA) 5.1 Vos (offset voltage at 25°C) (max) (mV) 3 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 35000000 Offset drift (typ) (µV/°C) 20 Iout (typ) (mA) 190 2nd harmonic (dBc) 70 3rd harmonic (dBc) 74 Frequency of harmonic distortion measurement (MHz) 5
SSOP (DBQ) 16 29.4 mm² (4.9 mm × 6 mm) SOIC (D) 16 59.4 mm² (9.9 mm × 6 mm)
  • FLEXIBLE SUPPLY RANGE:
    +5V to +12V Single-Supply
    ±2.5V to ±6V Dual Supply
  • UNITY-GAIN STABLE: 280MHz (G = 1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150µA/ch
  • IMPROVED HIGH-FREQUENCY PINOUT
  • WIDEBAND +5V OPERATION: 190MHz (G = +2)
  • APPLICATIONS
    • RGB AMPLIFIERS
    • WIDEBAND INA
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • ADC BUFFERS
    • ACTIVE FILTERS
    • CABLE DRIVERS

All trademarks are the property of their respective owners.

  • FLEXIBLE SUPPLY RANGE:
    +5V to +12V Single-Supply
    ±2.5V to ±6V Dual Supply
  • UNITY-GAIN STABLE: 280MHz (G = 1)
  • HIGH OUTPUT CURRENT: 190mA
  • OUTPUT VOLTAGE SWING: ±4.0V
  • HIGH SLEW RATE: 2100V/µs
  • LOW SUPPLY CURRENT: 5.1mA/ch
  • LOW DISABLED CURRENT: 150µA/ch
  • IMPROVED HIGH-FREQUENCY PINOUT
  • WIDEBAND +5V OPERATION: 190MHz (G = +2)
  • APPLICATIONS
    • RGB AMPLIFIERS
    • WIDEBAND INA
    • BROADBAND VIDEO BUFFERS
    • HIGH-SPEED IMAGING CHANNELS
    • PORTABLE INSTRUMENTS
    • ADC BUFFERS
    • ACTIVE FILTERS
    • CABLE DRIVERS

All trademarks are the property of their respective owners.

The OPA3691 sets a new level of performance for broadband, triple current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA3691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA3691 can deliver a 1V to 4V output swing with over 120mA drive current and 150MHz bandwidth. This combination of features makes the OPA3691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA3691‘s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA3691 supply current drops to less than 150µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

The OPA3691 sets a new level of performance for broadband, triple current-feedback op amps. Operating on a very low 5.1mA/ch supply current, the OPA3691 offers a slew rate and output power normally associated with a much higher supply current. A new output stage architecture delivers a high output current with minimal voltage headroom and crossover distortion. This gives exceptional single-supply operation. Using a single +5V supply, the OPA3691 can deliver a 1V to 4V output swing with over 120mA drive current and 150MHz bandwidth. This combination of features makes the OPA3691 an ideal RGB line driver or single-supply Analog-to-Digital Converter (ADC) input driver.

The OPA3691‘s low 5.1mA/ch supply current is precisely trimmed at 25°C. This trim, along with low drift over temperature, ensures lower maximum supply current than competing products. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA3691 supply current drops to less than 150µA/ch while the output goes into a high impedance state. This feature may be used for power savings.

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Technische Dokumentation

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Top-Dokumentation Typ Titel Format-Optionen Neueste englische Version herunterladen Datum
* Datenblatt Triple Wideband, Current-Feedback Operational Amplifier With Disable datasheet (Rev. E) 02.07.2008
Technischer Artikel 3 common questions when designing with high-speed amplifiers PDF | HTML 17.07.2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics PDF | HTML 28.03.2017
Benutzerhandbuch DEM-OPA-SSOP-3A User's Guide (Rev. A) 20.06.2006
Benutzerhandbuch DEM-OPA-SO-3A User's Guide (Rev. A) 20.06.2006
Analog Design Journal Expanding the usability of current-feedback amplifiers 28.02.2005
Analog Design Journal Active filters using current-feedback amplifiers 25.02.2005
Anwendungshinweis Noise Analysis for High Speed Op Amps (Rev. A) 17.01.2005
Anwendungshinweis Stabilizing Current-Feedback Op Amps While Optimizing Circuit Performance 28.04.2004
Anwendungshinweis Current Feedback Amplifiers: Review, Stability Analysis, and Applications 20.11.2000

Design und Entwicklung

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Evaluierungsplatine

DEM-OPA-SO-3A — Evaluierungsmodul für Dreifach-Operationsverstärker für SO-16-Gehäuse

The DEM-OPA-SO-3A demonstration fixture helps designers evaluate the operation and performance of TI's triple, high speed, wideband operational amplifiers with disable. This unpopulated PC board (PCB) is compatible with products offered in the 16-lead SOIC (D) package with flow-through pin-out.
 
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Evaluierungsplatine

DEM-OPA-SSOP-3A — Evaluierungsmodul für Dreifach-Operationsverstärker für SSOP-16-Gehäuse

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Simulationsmodell

OPA3691 PSpice Model

SBOM533.ZIP (37 KB) - PSpice-Modell
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Simulationsmodell

OPA3691 TINA-TI Reference Design

SBOM534.TSC (102 KB) - TINA-TI-Referenzdesign
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Simulationsmodell

OPA3691 TINA-TI Spice Model

SBOM532.ZIP (6 KB) - TINA-TI Spice-Modell
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Berechnungstool

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

Der Rechner für Analogtechniker beschleunigt viele der sich wiederholenden Berechnungen, die Entwickler von analogen Schaltungsdesigns regelmäßig durchführen müssen. Dieses PC-basierte Tool bietet eine grafische Schnittstelle mit einer Liste verschiedener gebräuchlicher Berechnungen. Das Spektrum (...)

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