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High-speed op amps (GBW ≥ 50 MHz)

THS4601

ACTIVE

Wideband, FET-Input Operational Amplifier

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Data sheet

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THS4631 ACTIVE High Speed FET-Input Operational Amplifier Wider BW (210 MHz), higher slew rate (1,000 V/us), lower offset (0.5 mV), and lower drift (2.5 µV/°C)

THS4601

ACTIVE
Data sheet Order now

Product details

Architecture FET / CMOS Input, 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) 32 GBW (typ) (MHz) 180 BW at Acl (MHz) 440 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 5.4 Vn at 1 kHz (typ) (nV√Hz) 5.4 Iq per channel (typ) (mA) 10 Vos (offset voltage at 25°C) (max) (mV) 4 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 110 Input bias current (max) (pA) 100 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 50 2nd harmonic (dBc) 65 3rd harmonic (dBc) 73 Frequency of harmonic distortion measurement (MHz) 1
Architecture FET / CMOS Input, 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) 32 GBW (typ) (MHz) 180 BW at Acl (MHz) 440 Acl, min spec gain (V/V) 1 Slew rate (typ) (V/µs) 100 Vn at flatband (typ) (nV√Hz) 5.4 Vn at 1 kHz (typ) (nV√Hz) 5.4 Iq per channel (typ) (mA) 10 Vos (offset voltage at 25°C) (max) (mV) 4 Rail-to-rail No Rating Catalog Operating temperature range (°C) -40 to 85 CMRR (typ) (dB) 110 Input bias current (max) (pA) 100 Offset drift (typ) (µV/°C) 10 Iout (typ) (mA) 50 2nd harmonic (dBc) 65 3rd harmonic (dBc) 73 Frequency of harmonic distortion measurement (MHz) 1
HSOIC (DDA) 8 29.4 mm² 4.9 x 6 SOIC (D) 8 29.4 mm² 4.9 x 6
  • Gain Bandwidth Product: 180 MHz
  • Slew Rate: 100 V/us
  • Maximum Input Bias Current: 100 pA
  • Input Voltage Noise: 5.4 nV/Hz
  • Maximum Input Offset Voltage: 4 mV
  • Input Impedance: 109 || 10 pF
  • Power Supply Voltage Range: ±5 to ±15 V
  • Unity Gain Stable
  • APPLICATIONS
    • Wideband Photodiode Amplifier
    • High-Speed Transimpedance Gain Stage
    • Test and Measurement Systems
    • Current-DAC Output Buffer
    • Active Filtering
    • High-Speed Signal Integrator
    • High-Impedance Buffer
  • Gain Bandwidth Product: 180 MHz
  • Slew Rate: 100 V/us
  • Maximum Input Bias Current: 100 pA
  • Input Voltage Noise: 5.4 nV/Hz
  • Maximum Input Offset Voltage: 4 mV
  • Input Impedance: 109 || 10 pF
  • Power Supply Voltage Range: ±5 to ±15 V
  • Unity Gain Stable
  • APPLICATIONS
    • Wideband Photodiode Amplifier
    • High-Speed Transimpedance Gain Stage
    • Test and Measurement Systems
    • Current-DAC Output Buffer
    • Active Filtering
    • High-Speed Signal Integrator
    • High-Impedance Buffer

The THS4601 is a high-speed, FET-input operational amplifier designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. By providing a 180-MHz gain-bandwidth product, ±15-V supply operation, and 100-pA input bias current, the THS4601 is capable of wideband transimpedance gain and large output signal swing simultaneously. Low current and voltage noise allow amplification of extremely low-level input signals while still maintaining a large signal-to-noise ratio.

The characteristics of the THS4601 ideally suit it for use as a wideband photodiode amplifier. Photodiode output current is a prime candidate for transimpedance amplification, an application of which is illustrated in Figure 1. Other potential applications include test and measurement systems requiring high-input impedance, digital-to-analog converter output buffering, high-speed integration, and active filtering.

The THS4601 is a high-speed, FET-input operational amplifier designed for applications requiring wideband operation, high-input impedance, and high-power supply voltages. By providing a 180-MHz gain-bandwidth product, ±15-V supply operation, and 100-pA input bias current, the THS4601 is capable of wideband transimpedance gain and large output signal swing simultaneously. Low current and voltage noise allow amplification of extremely low-level input signals while still maintaining a large signal-to-noise ratio.

The characteristics of the THS4601 ideally suit it for use as a wideband photodiode amplifier. Photodiode output current is a prime candidate for transimpedance amplification, an application of which is illustrated in Figure 1. Other potential applications include test and measurement systems requiring high-input impedance, digital-to-analog converter output buffering, high-speed integration, and active filtering.
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Technical documentation

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Type Title Date
* Data sheet Wideband, FET-Input Operational Amplifier datasheet (Rev. B) 04 Jun 2002
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note Noise Analysis for High Speed Op Amps (Rev. A) 17 Jan 2005
EVM User's guide THS4601EVM User's Guide 08 Oct 2002

Design & development

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Simulation model

THS4601 PSpice Model (Rev. A)

SLOJ169A.ZIP (39 KB) - PSpice Model
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Simulation model

THS4601 TINA-TI Reference Design (Rev. B)

SLAC098B.TSC (102 KB) - TINA-TI Reference Design
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Simulation model

THS4601 TINA-TI Spice Model (Rev. A)

SLAM027A.ZIP (4 KB) - TINA-TI Spice Model
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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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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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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 (...)
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