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  Analog Devices is debuting the industry’s first family of octal, high-speed analog-to-digital converters (ADCs) to extend to 14 bits. The eight-channel high-speed converters are ideal for portable medical devices and ultrasound machines, for which lower power consumption and smaller board space are critical design considerations. The 10-bit ,AD9212 and 12-bit AD9222 consume less than 100 mW per channel, yielding a savings of as much as 5 to 6 watts, as compared to competitive offerings, in ultrasound systems containing up to 512 channels. As the industry’s first 14-bit, high-speed octal ADC, the AD9252 offers designers the highest dynamic range for high-performance imaging applications, such as radar and sensitive non-destructive testing.

The octal ADCs, available in 9 mm x 9 mm, 64-pin LFCSPs (lead frame chip scale packages), provide a space savings of 40 to 60 percent over competing solutions. For multi-channel designs, the AD9212, AD9222 and AD9252 enable higher channel counts, less complex board layout and smaller board designs.

Sampling Rates Up to 50 MSPS
The three new ADCs are based on ADI’s AD9228 high-speed ADC, which has a quad design that increases dynamic range and image resolution in ultrasound equipment. The AD9212, AD9222 and AD9252 support sampling rates up to 50 MSPS and provide serial low-voltage differential signaling (LVDS) data outputs. Delivering the performance needed for multi-channel imaging and radar systems, they enable more data conversion paths to be routed within a given printed circuit board (PCB) area.

Low Noise Floor Ideal for Medical Instrumentation
A low noise floor is vital to medical instrumentation designers. With 70-dB signal-to-noise ratio (SNR) to Nyquist, the ADCs are adept at handling high sampling speeds without sacrificing performance. Featuring internal data rate multipliers, the converters offer improved output data flexibility with programmable clock and data alignment, as well as digital test pattern generation using a serial port interface (SPI).

Availability and Pricing
The AD9212 and AD9222 are sampling now with full production quantities available in September 2006. The 40 MSPS devices are priced at $32 and $44 in 1,000-piece quantities for the AD9212 and AD9222, respectively. At 50 MSPS, the AD9212 is $40, the AD9222 is $49 and the AD9252 is $54 in 1,000-piece quantities.

Viernes, 08 Septiembre, 2006 - 11:51
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