12-bit 500-Msample/s ADC offers lowest power consumption

12-bit 500-Msample/s ADC offers lowest power consumption

Developed for broadband communications, radar, light detection and ranging, and data acquisition systems, the 12-bit 500-Msample/s ISLA112P50IRZ A/D converter features a power consumption of 468 mW — five times lower than any competing 12-bit 500-Msample/s ADC. The low power consumption not only extends battery life in portable battery devices, but it allows system designers to integrate multiple ADCs in a single system without the thermal challenges normally associated with using high-speed ADCs.

The converter is built using the company’s FemtoCharge technology on a standard CMOS process. The part uses a pair of time-interleaved 250-Msample/s ADCs to generate its 500-Msample/s sampling rate. The IC also features the Intersil Interleave Engine (I2 E) technology, which performs automatic fine correction of offset, gain, and sampling time skew mismatches between unit ADCs to ensure high performance.

Features include an analog input bandwidth of 1.15 GHz, an SNR of 65.8 dBFS, and an SFDR of 80 dBc for an input frequency of 190 MHz. The device incorporates nap/sleep modes, and digital output data are available in either LVDS or CMOS formats. The converter also offers multiple chip time alignment support via the synchronous clock divider reset.

The 12-bit ISLA112P50 is part of a family of pin-compatible converters that includes the 10-bit ISLA110P50 and the 8-bit ISLA118P50. All are available in a space-efficient 72-pin QFN package that is only 10 x 10 mm, which is 49% to 77% smaller than competing parts. (Depending on the selected resolution, from 36 to $125 ea/1,000 — available now.)

Intersil , Milpitas , CA
Sales 408-432-8888
http://www.intersil.com