ADC delivers fast sampling

Sunnyvale, Calif. — Maxim Integrated Products has unveiled its high performance 8-bit, 2.2 Gsps analog-to-digital converter (ADC). The MAX109 is said to deliver excellent wideband dynamic performance that has been optimized for capturing input frequencies in the second Nyquist zone.

Fabricated using an advanced SiGe process, the MAX109 integrates a high-performance track/hold (T/H) amplifier, a quantizer, and a 1:4 demultiplexer on a single monolithic die. At a sample rate of 2.2 Gsps and an input frequency of 300 MHz, the ADC achieves a spurious-free dynamic range (SFDR) of 62 dBc and a signal-to-noise ratio (SNR) of 45 dB. The SNR remains flat (within 1.6 dB) for input frequencies up to 2 GHz.

The MAX109 can also digitize/synthesize signals directly at RF, which reduces or eliminates the need for RF downconverters, said Maxim. This wideband dynamic performance and integrated functionality make the MAX109 suitable for applications such as broadband communication receivers, radar systems, and high-end instrumentation systems.

The ADC supports either differential or single-ended inputs with a ±250 mV voltage range. The output data is in standard LVDS format and is demultiplexed internally by a 1:4 demultiplexer. The LVDS outputs operate from a supply-voltage range of 3.0 V to 3.6 V, which enables compatibility with single 3-V reference systems. Control inputs allow interleaving of additional MAX109 devices to increase the effective system-sampling rate.

The MAX109 is offered in a 256-pin SBGA package and is specified over the extended temperature range of -40°C to 85°C.

Availability: An evaluation kit will be available.
Datasheet: MAX109

Maxim Integrated Products , 1-888-629-4642,

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