TI Introduces Industry's Fastest 14-bit ADC at 400 MSPS

7th August 2007

ES Admin

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Texas Instruments Incorporated today introduced the industry's fastest monolithic 14-bit analog-to-digital converter (ADC) at 400 mega samples per second (MSPS). The new ADC provides unmatched performance of 11.1 effective number of bits (ENOB) at this speed, enabling high-bandwidth applications such as test and measurement instrumentation, software-defined radio, radar systems and communication instrumentation that were previously confined to lesser resolution ADCs.

Enabled by TI's proprietary BiCom3 process technology, the ADS5474 integrates an on-chip buffer amplifier to ease analog front-end (AFE) design. The buffer amplifier eliminates sample-and-hold kick-back and provides a high input impedance over time and frequency, simplifying the AFE design for wide bandwidth applications from DC to intermediate frequencies (IF) well above 200 MHz. Additionally, the ADS5474 is pin-for-pin compatible to the ADS5463 12-bit, 500-MSPS ADC, in a space-saving 14-mm x 14-mm package, providing an easy design path across multiple systems using TI ADCs.

The 400-MSPS sample rate provided by the ADS5474 with 70-dBFS signal-to-noise ratio (SNR) through first Nyquist and 69-dBFS SNR through second Nyquist offers a number of benefits to the customer in these applications:

* Improves transmit power amplifier linearization and efficiency when used in conjunction 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 with higher sensitivity
* Enables 14-bit resolution with 200-MHz bandwidth for high-speed digitizers, spectrum analyzers, test and measurement equipment and general data acquisition systems

TI further eases customers' designs with the entire high-performance signal chain offering. For example, customers are able to combine the ADS5474 with a TI high-speed amplifier (such as THS4520, THS4509 or THS9001) and clock synchronizer and jitter cleaner (CDCM7005). In addition, systems solutions will benefit from TI's portfolio of high performance digital-to-analog converters, RF solutions, and digital up and down converters.