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High-speed op amps (GBW ≥ 50 MHz)

THS4031

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100-MHz, single-channel low-noise voltage-feedback amplifier

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NEW OPA891 ACTIVE 180-MHz 0.95-nV√Hz operational amplifier with ultra-low total harmonic distortion (THD) Lower noise (0.95 nV/Hz), lower Iq (7.5 mA), higher precision (1 mV), and improved THD+N (-137 dBc)

THS4031

ACTIVE
Data sheet Order now

Product details

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) 30 GBW (typ) (MHz) 120 BW at Acl (MHz) 100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 1.6 Vn at 1 kHz (typ) (nV√Hz) 1.6 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 2 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 6000000 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 90 2nd harmonic (dBc) 81 3rd harmonic (dBc) 81 Frequency of harmonic distortion measurement (MHz) 1
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) 30 GBW (typ) (MHz) 120 BW at Acl (MHz) 100 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 1.6 Vn at 1 kHz (typ) (nV√Hz) 1.6 Iq per channel (typ) (mA) 8.5 Vos (offset voltage at 25°C) (max) (mV) 2 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 95 Input bias current (max) (pA) 6000000 Offset drift (typ) (µV/°C) 2 Iout (typ) (mA) 90 2nd harmonic (dBc) 81 3rd harmonic (dBc) 81 Frequency of harmonic distortion measurement (MHz) 1
HVSSOP (DGN) 8 14.7 mm² 3 x 4.9 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Ultra-low 1.2nV/√Hz voltage noise
  • High speed:
    • 100MHz bandwidth [G = 2 (–1), –3dB]
    • 100V/µs slew rate
  • Very low distortion
    • THD = –81dBc (f = 1MHz, RL = 150Ω)
    • THD = –96dBc (f = 1MHz, RL = 1kΩ)
  • Low 0.3mV (typical) input offset voltage
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±16V
  • Offset nulling pins on the THS4031
  • Ultra-low 1.2nV/√Hz voltage noise
  • High speed:
    • 100MHz bandwidth [G = 2 (–1), –3dB]
    • 100V/µs slew rate
  • Very low distortion
    • THD = –81dBc (f = 1MHz, RL = 150Ω)
    • THD = –96dBc (f = 1MHz, RL = 1kΩ)
  • Low 0.3mV (typical) input offset voltage
  • 200mA output current drive (typical)
  • Typical operation from ±4.5V to ±16V
  • Offset nulling pins on the THS4031

The THS4031 and THS4032 (THS403x) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier THS4031 and the dual-amplifier THS4032 offer very good ac performance with 100MHz bandwidth (G = 2), 100V/µs slew rate, and 70ns settling time (0.1%). The THS403x are unity-gain stable with 120MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –96dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 1.2nV/√Hz, the THS403x are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.

The THS4031 and THS4032 (THS403x) are ultra-low voltage noise, high-speed voltage feedback amplifiers that are an excellent choice for applications requiring low voltage noise, including communications and imaging. The single-amplifier THS4031 and the dual-amplifier THS4032 offer very good ac performance with 100MHz bandwidth (G = 2), 100V/µs slew rate, and 70ns settling time (0.1%). The THS403x are unity-gain stable with 120MHz bandwidth. These amplifiers have a high drive capability of 200mA and draw only 7.5mA supply current per channel. With –96dBc of total harmonic distortion (THD) at f = 1MHz and a very low noise of 1.2nV/√Hz, the THS403x are designed for applications requiring low distortion and low noise such as buffering analog-to-digital converters.
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Type Title Date
* Data sheet THS403x 100MHz, Low-Noise, High-Speed Amplifiers datasheet (Rev. L) PDF | HTML 12 Jul 2024
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Analog Design Journal Accurately measuring ADC driving-circuit settling time (Rev. A) 18 May 2015
Application note Wideband Complementary Current Output DAC Single-Ended Interface (Rev. A) 08 May 2015
Application note Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 24 Jun 2009
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
More literature THS4031M/5962-9959501QxA 120-MHz Low-Noise, High-Speed Amplifier 18 May 2000
User guide THS4031 High-Speed Operational Amplifier EVM User's Guide 24 Jun 1999

Design & development

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Evaluation board

THS4031EVM — THS4031 evaluation module for 100-MHz, single-channel low-noise voltage-feedback amplifier

The THS4031 high-speed operational amplifier evaluation module (EVM) is a complete high-speed amplifier circuit. It consists of the THS4031 high-speed, low-power operational amplifier IC, along with a small number of passive parts, mounted on a small circuit board measuring approximately 1.7 inch (...)

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THS4031 PSpice Model (Rev. A)

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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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