Texas Instruments has expanded its line of ADCs with eight dual-channel devices available in 12 and 14bit resolutions at speeds from 65 to 250Msamples/s. The ADS42xx family of ADCs provide the performance and bandwidth for 3G/LTE wireless basestations, portable test and measurement and software defined radio applications. The 14bit ADS4246 uses 332mW power at 160Msamples/s and provides 92mW/channel to minimise board heating. The pin-compatible 11bit ADS58C28 operates at a speed of 200Msamples/s and provides 65MHz RF (radio frequency) channel bandwidth at input frequencies over 200MHz. The 6dB programmable gain option has a signal to noise ratio of up to 73.6dBFS (decibel full scale) and SFDR (spurious free dynamic range) of up to 91dB, relative to the carrier, in a 3G or LTE wireless infrastructure. The company provides tools and support to speed development including an EVM (evaluation module) and TSW1200 digital capture tool for rapid analysis of EVMs. There is also an Altera-compatible high-speed mezzanine connector and Xilinx-compatible FPGA mezzanine connector, IBIS (input output buffer information specification) models to verify board signal integrity requirements and for calculations includes an ADC harmonic calculator, anti-aliasing calculation tool, and jitter and SNR calculator. The ADCs are available in a 64-pin QFN package.
