Medical imaging, instrumentation, data-acq users convert to family with portable performance and power characteristics

Sunnyvale, CA — Maxim Integrated Products continues to expand its high-speed data converter portfolio by introducing a family of six low-power, high-dynamic performance, pin-compatible, 14-bit and 12-bit analog-to-digital converters. The 14-Bit A/ D converters are initially available at a speed of 65MS/sec, and the 12-bit A/D converters are available in speed grades up to 80MS/sec.

Devices in this high-performance A/D converter family have been optimized for baseband and direct-IF (intermediate frequency) sampling applications. They include the MAX12553 (14-bit, 65MS/sec, baseband/IF), MAX1209 (12-bit, 80MS/sec, IF), MAX1211 (12-bit, 65MS/sec, IF), MAX1208 (12-bit, 80MS/sec, baseband), MAX1207 (12-bit, 65MS/sec, baseband), and MAX1206 (12-bit, 40MS/sec, baseband). These A/D converters are ideal for applications such as communication receivers, medical imaging, portable instrumentation, and low-power data acquisition.

The MAX12553/MAX1209/MAX1211 deliver exceptional dynamic performance at input frequencies up to 400MHz, making them suitable for direct-IF sampling applications. For example, the MAX12553 delivers 70.9dB SNR and 80.7dBc SFDR at an input frequency of 175MHz, while consuming only 363mW of power. The direct-IF sampling capability of these A/D converters eliminates the need for downconversion stages, which simplifies system design, lowers cost, reduces power, and saves board space.

For baseband sampling applications, the MAX12553/MAX1208/MAX1207/MAX1206 deliver exceptional dynamic performance up to Nyquist. The MAX1208, for example delivers 68.2dB SNR and 88.2dBc SFDR at an input frequency of 32.5MHz, while consuming only 399mW of power.

All of the 14-bit and 12-bit devices are pin compatible. This allows additional design flexibility by enabling the designer to migrate to higher or lower levels of performance with minimal changes. These devices are available in a space-saving, 40-pin, thin QFN-EP package specified for the extended temperature range (-40 degrees Celsius to +85 degrees Celsius). Prices start at $24.85 for the 14-bit ADC family and $8.95 for the 12-bit ADC family (1000-up, FOB USA). Evaluation kits are available to speed designs.

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Designers of communications receivers who face tough space, power, and cost constraints will want to check out a family of six A/D converters from Maxim Integrated Products. The converters meld high dynamic performance and low power drain; qualities that also suit the converters for use in medical imaging, portable instrumentation, data-acquisition equipment.

Presently, the converter family comprises one 14-bit member, the 65-MS/sec MAX12553, which targets both baseband and IF signals; and five 12-bit members. Of the five, the 40-MS/sec MAX1206, 65-MS/sec MAX1207, and 80-MS/sec MAX1208 are aimed at baseband signals, while the 80-MS/sec MAX1209 and 65-MS/sec MAX1211 focus on IF signals.

Optimized for baseband and direct intermediate-frequency (IF) sampling applications at up to 200 MHz, the 14- and 12-bit pin-compatible converters clear the way for extracting baseband information from radio frequency (RF) signals in just one conversion stage rather than two.

The payoff for cutting out one down-conversion stage is in replacing four to six components with just one. And although some competitive converters can convert RF signals directly to baseband, says Maxim business manager Maher Matta, they typically suffer from high costs, poor performance, and hefty power consumption. In contrast, members of Maxim converter family tout both exceptional dynamic performance and low power dissipation, using about half the power of competitive parts.

For example, for direct IF sampling applications at input frequencies up to 175 MHz, the MAX12553 features a 70.9-dB signal-to-noise ratio (SNR) and 80.7-dBc spurious-free dynamic range (SFDR). Yet the converter draws only 363 mW. As for sampling baseband frequencies, the MAX1208 touts a 68.2-dB SNR and 88.2-dBc SFDR for input signals up to 32.5 MHz, while drawing only 399 mW.

Moreover, pin compatibility among the 12- and 14-bit converters lets designers who plan ahead use one board design for both single and multi-carrier systems. In the coming months, Maxim plans to roll out additional 95- and 80-MS/secversions with both 12- and 14-bit resolutions.

In quantities of 1,000 and up, prices for the A/D converters start at $24.85 each for the 14-bit versions and $8.95 each for the 12-bitters. Evaluation kits are available to help designers work faster.

MAX1206 data sheet
MAX1207 data sheet
MAX1208 data sheet
MAX1209 data sheet
MAX1211 data sheet
MAX12553 data sheet

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