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High-speed ADC driver features rail-to-rail input

Posted: 12 Sep 2007 ?? ?Print Version ?Bookmark and Share

Keywords:ADC driver? rail-to-rail input? high speed ADC?


Linear Technology Corp. has introduced the LTC6406 high-speed, low power ADC driver featuring low distortion and noise, rail-to-rail input stage and an independently adjustable output common mode range.

Using a single 3V supply, the LTC6406's differential outputs each swing from near ground to 2V making it suitable for level shifting signals to match the input range of 12- to 16bit single supply differential input ADCs.

In addition, the LTC6406 is built for speed, performance and power efficiency. It has 3GHz gain-bandwidth product and 800MHz unity gain -3dB bandwidth. The ADC also achieves -90dBc distortion performance for input frequencies from DC to 20MHz, and nearby -70dBc distortion performance from DC to 50MHz.

Operating on supplies from 2.7V to 3.5V, the LTC6406 is fully specified at 3V. This allows the amplifier to share the power supply used by many ADCs. Current consumption is at 18mA, which can be reduced to 300?A during periods of inactivity by use of a shutdown feature.

"The LTC6406 achieves excellent dynamic performance with low power consumption," says Kris Lokere, design manager at Linear. "Its patent-pending rail-to-rail input stage simplifies the task of translating a ground-referenced or supply-referenced signal to the input range of popular high speed ADCs such as the LTC2206.

The LTC6406 is available in a 3mm x 3mm 16-lead QFN package in both commercial (0C to 70C) and industrial (-40C to 85C) temperature ranges. Pricing starts at $3.44 per unit in 1,000-piece quantities.

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