THS4509

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1.9-GHz, Wideband, Low-Noise, Low-Distortion, Fully-Differential Amplifier

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Product details

Parameters

2nd harmonic (dBc) 104 3rd harmonic (dBc) 108 @ MHz 10 Acl, min spec gain (V/V) 2 Architecture Fully Differential ADC Driver BW @ Acl (MHz) 2000 Features Shutdown, Decompensated GBW (Typ) (MHz) 3000 Number of channels (#) 1 Operating temperature range (C) -40 to 85 Product type RF FDA Slew rate (Typ) (V/us) 6600 Total supply voltage (Min) (+5V=5, +/-5V=10) 3 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.25 Vn at flatband (Typ) (nV/rtHz) 1.9 Vn at 1 kHz (Typ) (nV/rtHz) 10 Vos (offset voltage @ 25 C) (Max) (mV) 4 open-in-new Find other RF FDAs

Package | Pins | Size

VQFN (RGT) 16 9 mm² 3 x 3 open-in-new Find other RF FDAs

Features

  • Fully-Differential Architecture
  • Centered Input Common-Mode Range
  • Output Common-Mode Control
  • Minimum Gain of 2 V/V (6 dB)
  • Bandwidth: 1900 MHz
  • Slew Rate: 6600 V/µs
  • 1% Settling Time: 2 ns
  • HD2: –75 dBc at 100 MHz
  • HD3: –80 dBc at 100 MHz
  • OIP3: 37 dBm at 70 MHz
  • Input Voltage Noise: 1.9 nV/√Hz (f > 10 MHz)
  • Power-Supply Voltage: 3 V to 5 V
  • Power-Supply Current: 37.7 mA
  • Power-Down Current: 0.65 mA
  • APPLICATIONS
    • 5-V Data Acquisition Systems High Linearity ADC Amplifiers
    • Wireless Communication
    • Medical Imaging
    • Test and Measurement

All other trademarks are the property of their respective owners

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Description

The THS4509 device is a wideband, fully-differential op amp designed for 5-V data acquisition systems. It has a low noise at 1.9 nV/√Hz, and low harmonic distortion of –75 dBc HD2 and –80 dBc HD3 at 100 MHz with 2 VPP, G = 10 dB, and 1-kΩ load. Slew rate is high at 6600 V/µs, and with settling time of 2 ns to 1% (2-V step), it is ideal for pulsed applications. It is designed for a minimum gain of 6 dB, but is optimized for gains of 10 dB.

To allow for DC coupling to analog-to-digital converters (ADCs), its unique output common-mode control circuit maintains the output common-mode voltage within 3-mV offset (typical) from the set voltage, when set within 0.5-V of midsupply, with less than 4-mV differential offset voltage. The common-mode set point is set to midsupply by internal circuitry, which may be overdriven from an external source.

The input and output are optimized for best performance with the common-mode voltages set to midsupply. Along with high performance at low power-supply voltage, this design makes it ideal for high-performance, single-supply 5-V data acquisition systems. The combined performance of the THS4509 in a gain of 10 dB driving the ADS5500 ADC, sampling at 125 MSPS, is 81-dBc SFDR and 69.1-dBc SNR with a –1 dBFS signal at 70 MHz.

The THS4509 is offered in a quad, leadless VQFN-16 package (RGT), and is characterized for operation over the full industrial temperature range from –40°C to +85°C.

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Technical documentation

= Top documentation for this product selected by TI
No results found. Please clear your search and try again. View all 16
Type Title Date
* Datasheet THS4509 Wideband, Low-Noise, Low-Distortion, Fully-Differential Amplifier datasheet (Rev. I) Jul. 29, 2016
Application notes Q3 2009 Issue Analog Applications Journal Sep. 24, 2018
Application notes Q4 2009 Issue Analog Applications Journal Sep. 24, 2018
White papers The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application notes Design for a Wideband Differential Transimpedance DAC Output (Rev. A) Oct. 17, 2016
Application notes Fully-Differential Amplifiers (Rev. E) Sep. 19, 2016
Application notes Driving High-Speed ADCs: Circuit Topologies and System-Level Parameters (Rev. A) Sep. 10, 2010
Application notes Using fully differential op amps as attenuators, Part 3 Oct. 04, 2009
Application notes Using fully differential op amps as attenuators, Part 2 Jul. 14, 2009
Application notes Output impedance matching with fully differential operational amplifiers Mar. 11, 2009
Application notes Q1 2009 Issue Analog Applications Journal Mar. 11, 2009
Application notes Design for a Wideband Differential Transimpedance DAC Output Apr. 18, 2008
Application notes Low-power, high-intercept interface to the ADS5424, 105-MSPS converter Oct. 10, 2005
Application notes Analysis of fully differential amplifiers Mar. 11, 2005
Application notes Fully differential amplifiers applications:Line termination,driving high-speed.. Mar. 02, 2005
Application notes Noise Analysis for High Speed Op Amps (Rev. A) Jan. 17, 2005

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
Description

The ADS5474EVM is a circuit board which allows the designer to run an evaluation of Texas Instruments ADS5474 device, a 14-bit 400 MSPS ADC. With the supplied Logic analyzer breakout board, the ADC LVDS output can be directly captured using either an Agilent E5405A or Tektronix P6980 touchless (...)

Features
  • Transformer coupled analog input path
  • Texas Instrument’s THS9001 analog input path
  • LVDS capture ability
EVALUATION BOARDS Download
Description

The ADS54RF63EVM is a circuit board which allows the designer to run an evaluation of Texas Instruments' ADS5463 device, a 12 bit 550 MSPS ADC optimized for high SFDR with high IF/RF inputs. With the supplied Logic analyzer breakout board, the ADC LVDS output can be directly captured using either an (...)

Features
  • Transformer coupled analog input path
  • Texas Instruments' THS9001 analog input path
  • LVDS capture ability
EVALUATION BOARDS Download
Description

The ADS6125EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6125 device, a low power 12-bit 125 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible environment to (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable parallel output modes
  • Direct connection to TSW1100 High Speed ADC Capture Card
  • Separate analog and digital supply connections
EVALUATION BOARDS Download
Description

The ADS6142EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6142 device, a low power 14-bit 65 MSPS analog to digital converter. The ADC features a configurable parallel DDR LVDS or CMOS outputs. The EVM provides a flexible environment to test (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable parallel output modes
  • Direct connection to TSW1100 High Speed ADC Capture Card
  • Separate analog and digital supply connections
EVALUATION BOARDS Download
document-generic User guide
Description

The ADS6422EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6422 device, a quad channel 12-bit 65 MSPS analog to digital converter. The ADC features a configurable serialized LVDS outputs which can be directly deserialized using TI‘s (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable serialized output modes
  • Direct connection to High Speed ADC LVDS System (Deserializer)
  • Separate analog and digital supply connections
  • www.latticesemi.com/ads6000evminterface
EVALUATION BOARDS Download
document-generic User guide
Description

The ADS6425EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6425 device, a quad channel 12-bit 125 MSPS analog to digital converter. The ADC features a configurable serialized LVDS outputs which can be directly deserialized using TI‘s (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable serialized output modes
  • Direct connection to High Speed ADC LVDS System (Deserializer)
  • Separate analog and digital supply connections
  • www.latticesemi.com/ads6000evminterface
EVALUATION BOARDS Download
document-generic User guide
Description

The ADS6442EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6442 device, a quad channel 14-bit 65 MSPS analog to digital converter. The ADC features a configurable serialized LVDS outputs which can be directly deserialized using TI‘s (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable serialized output modes
  • Direct connection to High Speed ADC LVDS System (Deserializer)
  • Separate analog and digital supply connections
  • www.latticesemi.com/ads6000evminterface
EVALUATION BOARDS Download
document-generic User guide
Description

The ADS6445 EVM is a circuit board that allows designers to evaluate the performance of Texas Instruments‘ ADS6445 device, a quad channel 14-bit 125 MSPS analog to digital converter. The ADC features a configurable serialized LVDS outputs which can be directly deserialized using (...)

Features
  • Transformer coupled analog input path
  • Transformer coupled clock input path
  • Amplifier path based on the THS4509
  • Configurable serialized output modes
  • Direct connection to TSW1200 High Speed ADC LVDS Evaluation System
  • Separate analog and digital supply connections
  • www.latticesemi.com/ads6000evminterface
EVALUATION BOARDS Download
49
Description

THS4508EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4508EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 10 dB and 50 ohm input and (...)

Features
  • Configured with 50 ohms input/output impedance
  • 1:1 Transformer on output
  • Power Supply: 5V
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points
  • Input and Output signals are via SMA connectors
  • Power connectors are via banana jack
EVALUATION BOARDS Download
49
Description

THS4509RGT Eval 1 EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4509RGT Eval 1 EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 10dB and (...)

Features
  • Configured with 50 ohms input/output impedance.
  • 1:1 Transformer on output
  • Power Supply: 3V (+/-1.5V) to 5V (+/-2.5V)
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points.
  • Input and Output signals are via SMA connectors.
  • Power connectors are via banana jack.
EVALUATION BOARDS Download
49
Description

THS4511EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4511EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 0 dB and 50 ohm input and (...)

Features
  • Configured with 50 ohms input/output impedance
  • 1:1 Transformer on output
  • Power Supply: 5V
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points
  • Input and Output signals are via SMA connectors
  • Power connectors are via banana jack
EVALUATION BOARDS Download
49
Description

THS4513EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4513EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 0dB and 50 ohm input and output (...)

Features
  • Configured with 50 ohms input/output impedance.
  • 1:1 Transformer on output
  • Power Supply: 3V (+/-1.5V) to 5V (+/-2.5V)
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points.
  • Input and Output signals are via SMA connectors.
  • Power connectors are via banana jack.
EVALUATION BOARDS Download
49
Description

THS4520EVM is an evaluation Module for the RGT (16 pin leadless QFN) package.

The THS4520EVM is designed to demonstrate the functionality and versatility of the device. The EVM is ready for power, signal source, and test instruments. The EVM is configured for a gain of 0 dB and 50 Ω (...)

Features
  • Configured with 50 Ω input/output impedance
  • 1:1 Transformer on output
  • Power Supply: 3 V (±1.5 V) to 5 V (±2.5 V)
  • Decoupling capacitors
  • Connectors: Vs+, GND, Vs-, In+, J3 (V OUT), and test points
  • Input and Output signals are via SMA connectors
  • Power connectors are via banana jack

Design tools & simulation

SIMULATION MODELS Download
SLOC050C.ZIP (53 KB) - PSpice Model
SIMULATION MODELS Download
SLOM151A.ZIP (5 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SLOM152B.TSC (53 KB) - TINA-TI Reference Design

Reference designs

REFERENCE DESIGNS Download
Optimizing THS4509 to Drive High Speed ADCs Reference Design
TIDA-00093 This reference design shows the ability of the high-speed amplifier, THS4509 to perform single-ended to differential conversion to drive high-speed analog-to-digital converters (ADCs) while maintaining excellent noise and distortion performance. Performance versus input frequency is shown for both (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Optimizing LMH6554 to Drive High Speed ADCs
TIDA-00092 This reference design shows the ability of the high-speed amplifier, LMH6554, to perform single-ended to differential conversion to drive high-speed analog-to-digital converters (ADCs) while maintaining excellent noise and distortion performance. Performance versus input frequency is shown for both (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
VQFN (RGT) 16 View options

Ordering & quality

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