National Semiconductor 2.5 GHz fully differential amplifier and 10-bit, 2 Giga-sample per second (GSPS) single/1 GSPS dual analogue-to-digital converter (ADC) deliver dynamic system-level performance and low power for wideband applications.

These combined signal path products are well-suited for ground-based radar, data acquisition systems, point-to-point base stations and next-generation set-top boxes.
 
At a frequency of 248 MHz, the ADC10D1000 provides the industry’s highest spurious-free dynamic range (SFDR) performance of 66 decibels relative to carrier (dBc) and 9.1 effective number of bits (ENOB). Running off a single supply voltage, the ADC10D1000 achieves this while consuming 33% less total power (2.8W) than comparable ADCs.

The 2.5 GHz LMH6554 wideband, fully differential amplifier drives the 10-bit ADC10D1000, providing best-in-class 0.1 dB gain flatness up to 800 MHz, SFDR of 72 dBc at 250 MHz and leading low-input voltage noise performance of 0.9 nV/sqrt Hz.
These devices feature power-to-performance metrics that position them among National’s PowerWise family of energy-efficient products. The ADC10D1000 yields 2.52 picojoules (pJ) per conversion, while the LMH6554 consumes 21 uA per MHz.

Pricing and availability

The ADC10D1000 and LMH6554 are sampling now, with production quantities scheduled for first quarter 2009. More information on the ADC10D1000’s pricing, samples and reference boards: www.national.com/pf/DC/ADC10D1000.html.

The LMH6554 is priced at $4.50 in 1,000-unit quantities. More information: www.national.com/pf/LM/LMH6554.html.