Ads5485 Sampling Rate 200MSPS 16 Bit Single Channel Analog-to-digital Converter

Recently, Texas Instruments (TI) announced the launch of the industry's first 16 bit single channel analog-to-digital converter (ADC) with a sampling rate of 200MSPS, which can achieve the ultrafast speed previously achieved only by low-resolution ADC. The new data converter can bring a higher level of performance to applications such as communication, test and measurement and national defense. The evaluation board (EVM) can not only significantly simplify the design process, but also realize the rapid evaluation of these complex systems (for more details, please visit: ads5484 PDF, ads5484 Datasheet http://focus.TI.com.cn/cn/docs/prod/folders/print/ads5485.html ）。

Susie Inouye, chief analyst of databeans, pointed out: "Medical treatment, wireless communication and broadband infrastructure all need higher speed and resolution, which promotes the development of high-speed converters. In fact, ADC with sampling rate of 50 MSPs or higher is expected to maintain a growth rate of 17% from 2008 to 2013. Ti has always been committed to introducing converters that can meet the requirements of high speed and high resolution, so that customers can realize such as 4G communication Letter and other new applications. "

The ads5485 features high speed, high resolution and ultra-low noise, which can significantly optimize the performance of relevant applications. For example, this ADC can be used for 70 MHz input frequency (if) Achieve 75 dBfs signal-to-noise ratio and 87 DBC spurious free dynamic range. Ads5485 simplifies the analog front-end design by integrating fully differential input buffer. The buffer is developed by TI's bicom3 high-speed process technology, which can provide constant input impedance for input frequency and eliminate the flyback problem of ADC tracking and holding structure, so as to ensure consistent linearity of signal.

The performance of ads5485 can improve design flexibility and provide the following system level advantages for communication, test and measurement and defense applications:

·It supports 16 bit resolution and 100 MHz bandwidth, which can fully meet the needs of high-speed digital converter, spectrum analyzer, test and measurement equipment and general data acquisition system;

·The linearization and efficiency of the transmitting power amplifier are improved, and the digital predistortion algorithm is adopted to reduce the overall system cost;

·Support higher bandwidth sampling rate of radar system, which is helpful to improve tracking resolution and object discrimination;

·Enable software defined radio equipment to implement more standards, such as WiMAX, LTE and CDMA.

Robert sgandurra, senior product manager of Pentek company, pointed out: "Ti continues to improve the performance of high-speed ADC. For our new model 7150 Quad A / D software radio module There is no doubt that ads5485 is the best solution. Higher sampling rate means that users will be able to directly realize the digitization of 100 MHz bandwidth, which will benefit customers who carry out the design of broadband radar and broadband communication system. "

Packaging and supply

Ads5485 further enriches the product camp of TI's ads548x series high-speed ultra-low noise ADC. The device is packaged in space saving 9mm x 9mm 64 pin QFN.

Part number speed (MSPs) resolution (bit) SNR (dBfs) SFDR (DBC) SINAD (DBC)

ADS5485 200 16 75 87 73.7

ADS5484 170 16 75.5 87 74.3

ADS5483 135 16 79 97 77.8

ADS5482 105 16 80.5 98 79.3

ADS5481 80 16 80.6 98 79.5

The values listed are SNR, SFDR and SINAD at 70 MHz if.

Tools and signal chain solutions

The samples of all five ads548x series products have been fully launched. In addition, Ti has launched many tools to simplify the design. For example, ads5485 and cdce72010 low jitter clocks are provided on the same EVM to help quickly evaluate complex systems. Customers can make full use of TI's tsw1200 digital capture tool to quickly evaluate up to 16 bit resolution and 500 MSPs sampling rate ADC. For samples, EVM and tsw1200 capture cards, please visit the website: http://focus.ti.com.cn/cn/docs/prod/folders/print/ads5485.html 。

In order to further simplify the design and accelerate the time of putting products on the market, Ti has launched a full set of signal chain, including digital to analog converter, amplifier, clock, RF solution and digital signal processor.