12-bit, 1-GSPS ADC has fully buffered input

Suited for wideband signals in oversampling and undersampling applications with 200-MHz or greater signal bandwidth, the ADS5400 A/D converter with buffered input combines 12 bits of resolution with a 1-Gsample/s sampling rate, effectively doubling the amount of signal bandwidth that can be captured in a single ADC. The chip features 2.1-GHz input bandwidth, an SNR of 59 dBFS and an SFDR of 75 dBc in first Nyquist, and 58 dBFS SNR and 70 dBc SFDR performance for IFs beyond 1,000 MHz.

The part’s adjustable fine gain, offset and phase ease the interleaving of two or more ADCs to create a multi-GSPS digitizer, or the balancing of two ADCs in an I/Q receiver. Housed in an 100-pin TQFP, the part offers user-selectable single-or dual-bus DDR LVDs outputs. ($775 ea/100 — available now.)

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