TI offers best noise performance and lowest power in 14-bit, 8-channel ADC at 80 MSPS for medical imaging apps

BANGALORE, INDIA: Texas Instruments Inc. (TI) has introduced the industry’s best noise performance and lowest power octal-channel, 14-bit analog-to-digital converter (ADC) at 80 MSPS. The ADS5294 meets designers' needs for power-efficient, cost-effective designs by delivering a best-in-class signal-to-noise ratio (SNR) of 75.5 dBFS at 5 MHz and a sampling frequency of up to 80 MSPS.

Along with high performance and lowest power consumption of 77 mW per channel at 80 MSPS, ADS5294 also integrates a digital processing block, a low-frequency noise suppression mode and programmable input-to-output mapping. All these features allow system designers to integrate more functions in a smaller footprint, resulting in more compact medical imaging systems.

Key features and benefits
• Leading noise and power performance: The ADS5294 provides best-in-class SNR and enables designers of high-density applications to increase channel count without increasing power.
o 75.5 dBFS SNR at 5 MHz/80 MSPS
o 78.2 dBFS SNR at 5 MHz and decimation filter enabled
o 84 dBc SFDR at 5 MHz/80 MSPS
o 77 mW per channel at 80 MSPS (two LVDS wires per channel)
o Low-frequency noise suppression mode.
• Digital processing block that integrates several commonly used system functions such as two- or four-channel averaging and decimation by two, four or eight filters.
• The digital processing block can be used to significantly improve SNR and filter harmonics, while reducing output data rate for narrow-band applications.
• Two-wire LVDS interface: Using the ADS5294, digital data can be output over one or two wires of LVDS pins per channel reducing the number of interface lines. This creates a two-wire interface, which keeps the serial data rate low allowing designers to use low cost FPGAs.
• In addition to medical imaging systems, the ADS5294 brings the same benefits to radar, communications, test and measurement and other multi-channel data acquisition applications.