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High-speed op amps (GBW ≥ 50 MHz)

OPA2695

ACTIVE

Ultra-Wideband, Current-Feedback Operational Amplifier with Disable

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Data sheet

OPA2695

ACTIVE
Data sheet Order now

Product details

Architecture Current FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 1100 BW at Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2900 Vn at flatband (typ) (nV√Hz) 1.8 Vn at 1 kHz (typ) (nV√Hz) 1.8 Iq per channel (typ) (mA) 12.9 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 30000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 120 2nd harmonic (dBc) 73 3rd harmonic (dBc) 82 Frequency of harmonic distortion measurement (MHz) 10
Architecture Current FB Number of channels 2 Total supply voltage (+5 V = 5, ±5 V = 10) (min) (V) 3.5 Total supply voltage (+5 V = 5, ±5 V = 10) (max) (V) 12 GBW (typ) (MHz) 1100 BW at Acl (MHz) 1100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 2900 Vn at flatband (typ) (nV√Hz) 1.8 Vn at 1 kHz (typ) (nV√Hz) 1.8 Iq per channel (typ) (mA) 12.9 Vos (offset voltage at 25°C) (max) (mV) 3.5 Rail-to-rail No Features Shutdown Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 56 Input bias current (max) (pA) 30000000 Offset drift (typ) (µV/°C) 15 Iout (typ) (mA) 120 2nd harmonic (dBc) 73 3rd harmonic (dBc) 82 Frequency of harmonic distortion measurement (MHz) 10
SOIC (D) 8 29.4 mm² 4.9 x 6 VQFN (RGT) 16 9 mm² 3 x 3
  • GAIN = +2V/V BANDWIDTH (850MHz)
  • GAIN = +8V/V BANDWIDTH (450MHz)
  • OUTPUT VOLTAGE SWING: ±4.1V
  • ULTRA-HIGH SLEW RATE: 2900V/µs
  • DIFFERENTIAL 3RD-ORDER INTERCEPT:
    > 40dBm (f < 140MHz, 800 )
  • LOW POWER: 129mW/channel
  • LOW DISABLED POWER: 0.5mW/channel
  • APPLICATIONS
    • VERY WIDEBAND ADC DRIVERS
    • LOW-COST PRECISION IF AMPLIFIERS
    • BROADBAND VIDEO LINE DRIVERS
    • PORTABLE INSTRUMENTS
    • ACTIVE FILTERS
    • ARB WAVEFORM OUTPUT DRIVERS

PowerPAD is a trademark of Texas Instruments, Inc.
All other trademarks are the property of their respective owners.
  • GAIN = +2V/V BANDWIDTH (850MHz)
  • GAIN = +8V/V BANDWIDTH (450MHz)
  • OUTPUT VOLTAGE SWING: ±4.1V
  • ULTRA-HIGH SLEW RATE: 2900V/µs
  • DIFFERENTIAL 3RD-ORDER INTERCEPT:
    > 40dBm (f < 140MHz, 800 )
  • LOW POWER: 129mW/channel
  • LOW DISABLED POWER: 0.5mW/channel
  • APPLICATIONS
    • VERY WIDEBAND ADC DRIVERS
    • LOW-COST PRECISION IF AMPLIFIERS
    • BROADBAND VIDEO LINE DRIVERS
    • PORTABLE INSTRUMENTS
    • ACTIVE FILTERS
    • ARB WAVEFORM OUTPUT DRIVERS

PowerPAD is a trademark of Texas Instruments, Inc.
All other trademarks are the property of their respective owners.

The OPA2695 is a dual, very high bandwidth, current-feedback op amp that combines exceptional 2900V/µs slew rate and low input voltage noise to deliver a precision, low-cost, high dynamic range intermediate frequency (IF) amplifier. The device has been optimized for high gain operation, and the pin outs of the two available packages (QFN-16, SO-8) have been optimized to provide symmetrical input and output paths. This architecture makes the OPA2695 an ideal choice as a differential driver, such as for a high-speed analog-to-digital converter (ADC).

The OPA2695 low 12.9mA/channel supply current is precisely trimmed at +25°C. This trim, along with a low temperature drift, gives low system power over temperature. System power may be further reduced with the optional disable control pin. Leaving this pin open, or holding it high, gives normal operation. If pulled low, the OPA2695 supply current drops to less than 200µA/channel. This power-saving feature, along with exceptional single +5V operation, makes the OPA2695 ideal for portable applications. The OPA2695 is available in an SO-8 (without disable) package or QFN-16 package (with disable).

The OPA2695 is a dual, very high bandwidth, current-feedback op amp that combines exceptional 2900V/µs slew rate and low input voltage noise to deliver a precision, low-cost, high dynamic range intermediate frequency (IF) amplifier. The device has been optimized for high gain operation, and the pin outs of the two available packages (QFN-16, SO-8) have been optimized to provide symmetrical input and output paths. This architecture makes the OPA2695 an ideal choice as a differential driver, such as for a high-speed analog-to-digital converter (ADC).

The OPA2695 low 12.9mA/channel supply current is precisely trimmed at +25°C. This trim, along with a low temperature drift, gives low system power over temperature. System power may be further reduced with the optional disable control pin. Leaving this pin open, or holding it high, gives normal operation. If pulled low, the OPA2695 supply current drops to less than 200µA/channel. This power-saving feature, along with exceptional single +5V operation, makes the OPA2695 ideal for portable applications. The OPA2695 is available in an SO-8 (without disable) package or QFN-16 package (with disable).
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Technical documentation

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Type Title Date
* Data sheet Dual, Ultra-Wideband, Current-Feedback Operational Amplifier with Disable datasheet (Rev. A) 29 Aug 2008
Technical article 3 common questions when designing with high-speed amplifiers 17 Jul 2020
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article Cable equalization 101 – Automating your design (Part 1) 21 May 2013
More literature Driving High-Speed ADCs: Circuit Topologies and System-Level Parameters (Rev. A) 10 Sep 2010
More literature Wireline Data Transmission and Reception 27 Jan 2010

Design & development

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Evaluation board

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Simulation model

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SOIC (D) 8 View options
VQFN (RGT) 16 View options

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