Texas Instruments: THS4509EVM Evaluation Module

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Kit Overview

The Texas Instruments THS4509RGT Eval 1 EVMTHS4509RGT Eval 1 EVM (THS4509EVM) 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 50 ohm input and output termination for connection to common lab test equipment.

The THS4509THS4509 Wideband Operational Amplifier:

The THS4509 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 k 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 (typ) 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 THS4509THS4509 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 QFN-16 package (RGT), and is characterized for operation over the full industrial temperature range from –40°C to +85°C.

Key Applications: 5-V Data Acquisition Systems High Linearity ADC Amplifiers, Wireless Communication, Medical Imaging, Test and Measurement

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Technical Documents

Learning Center

Type	Description
User Guide	TI: User Guide for THS4509EVM Evaluation Module
Selection Guide	TI: Selection Guide for High-Speed Amplifiers trifold brochure (Rev. A)
Application Note	TI: Application Note for Fully-Differential Amplifiers (Rev. D)
Application Note	TI: Application Note for Driving High-Speed ADCs: Circuit Topologies and System-Level Parameter (Rev. A)
Application Note	TI: Application Note for Designing Wideband Differential Transimpedance DAC Output

Design Elements

Type	Description
Reference Design	TI: Reference Design for THS4509 TINA-TI (Rev. B)
Simulation Model	TI: SPICE Model for THS4509 (Rev. C)
Simulation Model	TI: SPICE Model for THS4509 TINA-TI (Rev. A)
CAD Model	TI: CAD Model for THS4509RGTRG4
CAD Model	TI: CAD Model for THS4509RGTTG4

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Kit Features

Key Features for THS4509EVMTHS4509EVM Evaluation Module:

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.

Key Features for THS4509THS4509 Wideband Operational Amplifier:

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

Kit Contents

The Texas Instruments THS4509EVMTHS4509EVM Evaluation Module is supplied with below contents:

Evaluation Board