Analog-to-Digital Converter operates at 200 MSPS.October 2, 2008 -
Suited for wide-bandwidth, high-sensitivity applications, 16-bit Model ADS5485 can achieve signal-to-noise ratio of 75 dBFS and spurious-free dynamic range of 87 dBc for 70 MHz input frequency. Single-channel unit eases analog front end design by incorporating fully differential input buffer, which provides constant input impedance over input frequency and eliminates kickback from ADC's track-and-hold structure to ensure consistent linearity of signal.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Texas Instruments, Inc. (TI)
12500 TI Blvd.
Dallas, TX, 75243-4136
USA
TI Introduces Industry's Fastest 16-Bit Analog-to-Digital Converter at 200 MSPS
Speed and resolution combine for superior performance in wide-bandwidth, high-sensitivity applications
DALLAS, Sept. 22 /-- Texas Instruments Incorporated (TI) (NYSE:TXN) today introduced the market's first 16-bit, single-channel, 200 mega samples per second (MSPS) analog-to-digital converter (ADC) to provide faster speeds previously only available with lower resolution ADCs. The new data converters enable new levels of performance in communications, test and measurement, and defense applications. Evaluation modules (EVMs) simplify design and enable rapid evaluations of these complex systems (see http://www.ti.com/ads5485-pr).
"High-speed converter growth is being fueled by faster speed and resolution requirements in medical, wireless communications and broadband infrastructure. In fact, ADCs with sample rates of 50 MSPS or greater are expected to grow at a rate of 17 percent from 2008 to 2013," said Susie Inouye, principal analyst with Databeans. "TI is delivering converters to address high speed and resolution requirements, allowing customers to enable new applications like 4G communications."
The ADS5485 delivers speed, resolution and ultra-low noise to optimize performance in these applications. For instance, the ADC can achieve a signal-to-noise ratio of 75 dBFS and a spurious-free dynamic range of 87 dBc for a 70-MHz input frequency (IF). The ADS5485 eases analog front end design by incorporating a fully differential input buffer. Developed in TI's BiCom3 high-speed process technology, this buffer provides constant input impedance over input frequency and eliminates kickback from the ADC's track-and-hold structure to ensure consistent linearity of the signal.
The performance of the ADS5485 increases design flexibility and offers a number of system-level benefits in communications, test and measurement and defense applications, such as the following:
-- Enables 16-bit resolution with up to 100-MHz bandwidth for high-speed digitizers, spectrum analyzers, test and measurement equipment, and general data acquisition systems
-- Improves transmit power amplifier linearization and efficiency combined with a digital pre-distortion algorithm, lowering total system cost
-- Enables sampling of larger bandwidths in radar systems, resulting in enhanced tracking resolution and object discrimination
-- Allows software-defined radios to implement a greater number of standards such as WiMAX, LTE and CDMA
"TI continues to push the performance envelope with high-speed ADCs. The ADS5485 was a clear choice for our new Model 7150 Quad A/D Software Radio Module. The higher sample rate means that users will be able to directly digitize nearly 100 MHz of bandwidth, which is invaluable for our customers working on wideband radar and wideband communication systems," said Robert Sgandurra, senior product manager with Pentek.
Availability and packaging
The ADS5485 expands TI's ADS548x family of high-speed, ultra-low-noise ADCs. The devices are available in a space-saving 9 x 9 mm, 64-pin QFN package and suggested resale pricing for each is listed below in 1000-piece quantities.
Part Speed Resolution SNR SFDR SINAD Price
Number (MSPS) (bits) (dBFS) (dBc) (dBc)
ADS5485 200 16 75 87 73.7 98.95
ADS5484 170 16 75.5 87 74.3 78.95
ADS5483 135 16 79 97 77.8 65.00
ADS5482 105 16 80.5 98 79.3 56.65
ADS5481 80 16 80.6 98 79.5 48.33
SNR, SFDR, SINAD numbers listed reflect 70 MHz IF.
Tools and signal chain solutions
Samples of all five members of the ADS548x family are available today. In addition, TI offers a number of tools to simplify design. For instance, the ADS5485 and the CDCE72010 low-jitter clock are available on the same evaluation module (EVM) to facilitate fast evaluations of complex systems. Customers can leverage TI's TSW1200 digital capture tool for rapid evaluation of ADCs of up to 16-bit resolution and 500-MSPS sample rates. Samples, EVMs and the TSW1200 capture card are available now from http://www.ti.com/ads548x
To further ease design and speed time-to-market, TI offers a complete signal chain, including digital-to-analog converters, amplifiers, clocks, RF solutions and digital signal processors. To download the latest Amplifier and Data Converter Selection Guide, visit the Analog eLab(TM) Design Center at http://www.ti.com/analogelab.
About Texas Instruments
Texas Instruments (NYSE:TXN) helps customers solve problems and develop new electronics that make the world smarter, healthier, safer, greener and more fun. A global semiconductor company, TI innovates through manufacturing, design and sales operations in more than 25 countries. For more information, go to http://www.ti.com/
Trademarks
Analog eLab is a trademark of Texas Instruments. All other trademarks and registered trademarks are property of their respective owners.
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