Industry’s first 16-bit 1-GSPS ADC and highest-density 14-bit ADC

13-05-2015 | Texas Instruments | Semiconductors

Texas Instruments has announced the ADS54J60 as the industry’s first 16-bit 1-GSPS analog-to-digital converter (ADC) and the first to achieve over 70dBFS signal-to-noise ratio (SNR) at 1-GSPS. The company has also announced the highest density four-channel 14-bit 500-MSPS ADC, the ADS54J54. To optimize the signal chain, TI’s new 4.5-GHz LMH6401 fully differential digital variable gain amplifier (DVGA) offers the widest bandwidth with DC coupling and allows signal acquisition of low and high frequencies without the limitation of baluns used in AC-coupled systems. The ADCs work together with the amplifier to provide the highest performance, lowest power and space savings in defence and aerospace, test and measurement, and communication infrastructure applications. Key features of the ADS54J60 and ADS54J54 : 1 - Highest speed in their classes: The 16-bit 1-GSPS ADS54J60 ADC and the 14-bit 500-MSPS ADS54J54 allow higher frequencies with more accurate signal analysis. 2 - Highest dynamic performance: ADS54J60 offers more than 3dB better SNR (70 dBFS at FIN=170 MHz) compared to competitive ADCs, a low noise floor of -159 dBFS/Hz, and spurious-free dynamic range (SFDR) of 86dBc. These enable high spectral purity and the ability to find weak signals in the presence of large, unwanted blockers. 3 - High density: ADS54J54 is 50 percent smaller than competitive ADCs, offering four channels in a 9mm x 9mm package. ADS54J60 offers two channels in a 10mm x 10mm package. 4 - Reduces the data interface speed and external processor resources: Integrated digital down converter (DDC) offers programmable decimation or a bypass mode. 5 - Simplified board routing and device synchronization: Both ADCs offer the high-speed JESD204B serial data interface, which simplifies connections to processors, including the 66AK2L06 system-on-chip, and FPGAs. 6 - Low power: Both new ADCs offer 20 percent lower power consumption than competitive ADCs. A complete support suite is available for system designers, including samples, product evaluation modules (EVMs) (ADS54J60EVM, ADS54J54EVM, LMH6401EVM) and a data converter capture card and pattern generator (TSW14J56EVM). IBIS models are available for the ADCs and the amplifier, and a TINA-TI model is available for the amplifier, says the company.

By Craig Dyball