TI unveils 12- and 14-bit, high-speed ADCs for advanced signal processing

Dallas, TX—Building on the high- performance analog design in its ADS5500 14-bit, 125-mega samples per second (MSPS) data converter,德州仪器公司(TI) Inc. has added five new members to its ADS5500 high-speed analog-to-digital converter (ADC) family. ADS5500 now consists of three 14-bit ADCs and three 12-bit ADCs available in speeds of 80, 100 and 125 MSPS, featuring spurious-free dynamic range (SFDR), high signal-to-noise ratio (SNR) and low power.

TI adds that its pin-compatible ADCs also provide an easy upgrade path. Designers now have a range of resolutions, speed and performance options tailored for their application requirements. Each device offers superior dynamic performance and high input frequency (IF) capability, allowing higher system integration and greater flexibility in advanced communications, test and measurement, medical, video, imaging, industrial and many other applications.

The 14-bit ADS5541 combines high performance (71 dB SNR) at high speed (105 MSPS) with half the power (710 mW) of competitive devices, while the 14-bit ADS5542 provides an economical 80-MSPS device with low power (670 mW) and excellent high-frequency performance.

Meanwhile, the ADS5520 (12-bit, 125 MSPS) and the ADS5521 (12-bit, 105 MSPS) deliver the highest signal accuracy and precision with 69 dB SNR at 100 MHz input frequency. The ADS5522 (12-bit, 80 MSPS) offers an even higher SNR of 70 dB. In addition, TI says the 12-bit devices offer the lowest power dissipation for any 12-bit ADC at the 105 and 125 MSPS nodes.

“Texas Instruments is extending the leadership performance of the ADS5500 by providing customers with a pin-compatible family of high-performance ADCs with great speed, performance and power combinations,” said Gregg Lowe, senior VP of TI’s high-performance analog business. “This family of products provides our customers a variety of options, allowing them to deliver new capabilities and features in their applications.”

Also, the ADS5500 family is optimized to work with TI’s high-performance C6000 DSP platform, which is used in applications ranging from third-generation wireless communications infrastructure to high-resolution medical imaging. TI adds that it also has a range of amplifiers, such as its recently announced OPA695 1.4 GHz current-feedback amplifier, which are well suited to work with the ADS5500 data converters to achieve high performance.

Equipment manufacturers can use the performance of the ADS5500 family to achieve a wide range of benefits, such as improved receiver performance in wireless communications, higher quality imaging in video systems, extended signal analysis capabilities for test equipment, and more precise analysis in medical instrumentation.

ADS5500的低功耗减少权力增刊ly requirements and the need for thermal management/cooling, resulting in smaller footprint and equipment size, higher circuit density and reduced system cost. The power savings also enables next-generation, high-performance portable wireless, test and measurement and video imaging systems.

The five new members of the ADS5500 family are sampling now, with volume production scheduled for 3Q04. All devices are available in 64-TQFP PowerPad packages. Evaluation modules (EVMs) are also available.

Control Engineering Daily News Desk
Jim Montague, news editor
jmontague@reedbusiness.com

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