Product category: Analogue and Mixed Signal ICs
News Release from: Texas Instruments (April 2001-March 2006) | Subject: THS4304
Edited by the Electronicstalk Editorial Team on 26 August 2004
Single-supply op amp breaks distortion
barriers
Texas Instruments is claiming the industry's lowest distortion 5V single-supply op amp for applications requiring high speed, low distortion and low noise.
Texas Instruments is claiming the industry's lowest distortion 5V single-supply op amp for applications requiring high speed, low distortion and low noise The THS4304 enables greater resolution and precision in wireless infrastructure, medical imaging and automatic test equipment, and is ideal for high-speed signal conditioning applications such as driving high-resolution, high-speed analogue-to-digital convertors like the ADS5500 family
This article was originally published on Electronicstalk on 8 Nov 2004 at 8.00am (UK)
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The THS4304 is the first unity gain stable op amp released from TI's groundbreaking BiCom-III complementary bipolar silicon germanium (SiGe) process.
Using a single 5V supply, the THS4304 wideband op amp offers best-in-class performance that rivals even the best previous-generation op amps operating with twice the power supply voltage.
Distortion performance is extraordinary with a 2nd order harmonic distortion of -85dBc and a 3rd order harmonic distortion of -100dBc at 10MHz and 2V peak-peak output into 100ohm load.
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The THS4304 provides 3GHz unity gain bandwidth, 830V/us slew rate and 2.4nV/(rt)Hz input noise, all while consuming only 18mA of quiescent current on a 5V supply.
The device's voltage-feedback topology offers designers the advantages of an op amp with balanced inputs, low offset voltage, low offset current and low offset drift, along with high common-mode and power supply rejection ratio.
The low noise and distortion of the THS4304, along with the device's low power supply overhead, maximise its signal-to-noise ratio (SNR) and spurious free dynamic range (SFDR).
These factors enable designers to achieve high dynamic range in their systems, allowing for more sensitive wireless systems, better diagnostic capabilities in medical ultrasound units and greater resolution in measurement equipment.
The THS4304 provides high-performance analogue processing that matches well with high-performance digital signal processors (DSP) such as the TMS320C6000T DSP platform, which offers a broad portfolio of the industry's fastest DSPs running at clock speeds up to 1GHz.
"The THS4304 demonstrates TI's significant advance in technology, which is enabling today's trend toward lower-voltage single-supply operation of high-performance analogue circuits", said Art George, Vice President of TI's High-Performance Linear Business.
"This allows designers to lower their system power supply, while achieving the performance needed in high-speed signal-acquisition chains".
Announced in mid-2002, TI's BiCom-III SiGe process focuses TI's state-of-the-art manufacturing technology on the future needs of high-performance systems.
The process is the first to integrate complementary NPN and PNP bipolar transistors in a SiGe process.
The complementary bipolar transistors enable many high-performance analogue and mixed-signal products, increasing speed up to 3x while reducing noise by as much as one half.
Devices designed with the process operate much faster at lower voltage and with greater dynamic range than ever before.
The THS4304 is available in volume today from TI and its authorised distributors.
The device is offered in an 8-pin MSOP package, 8-pin SOIC package and space-saving 5-pin SOT-23 package, with a suggested resale price of $1.75 each in 1000-unit quantities.
THS4304 evaluation modules, Spice models, technical documentation and samples are available via the TI website.
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