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Atmel claims 'fastest' 12bit ADC

Posted: 20 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:AT84AS001TP? ADC? analog-to-digital converter? Atmel?

Atmel Corp. announced what it claims to be the industry's fastest, commercially-available, monolithic 12bit ADC with a clock frequency of 500MSps. The AT84AS001TP aims to assist system designers in digitizing signals with frequencies up to 250MHz at sampling rates that could not have been achieved before with 12bit resolution.

According to Atmel, current commercial offerings for 12bit ADCs are limited to 250MSps, forcing designers to use several down-conversion hardware stages before entering the analog signals into the ADC, and to interleave several ADCs to get high data rates. The AT84AS001TP is said to allow simpler system architectures while offering the possibility to sample wider bandwidth signals. This will benefit applications such as telecommunications infrastructure, high IF broadband digital receivers, test and measurement equipment, high-speed data acquisition, and defense radar and communications systems.

Because of its 0.5dB band flatness from DC to 250MHz, the product is said to provide 62dBc SNR, 75dBc SFDR and 10 ENOB at 500MSps over the first Nyquist zone with two-tone inter-modulation distortion limited to -70dB. This high level of performance is achieved while dissipating 2.3W with 3.3V and 5V power supplies. The required analog input signal amplitude is 1.1Vpp, and can be AC or DC coupled.

The AT84AS001TP is available in a TBGA192 plastic package and will be offered in both commercial and industrial temperature ranges. Samples are available now, with production quantities in Q4 2006, at a unit price of $98 for 1,000-piece quantities in commercial grade.

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