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8-Bit ADCs claim lowest power consumption

Posted: 23 Jan 2009     Print Version  Bookmark and Share

Keywords:ADCs  analogue power  8bit  analogue supply regulator 


Maxim Integrated Products has unveiled a pin-compatible family of dual-channel, 8bit, 65/100/130MSps ADCs.

Claimed to offer the lowest power consumption, the devices consume a mere 43mW (MAX19505), 57mW (MAX19506), and 74mW (MAX19507) of analogue power per channel. Additionally, these ADCs achieve 8bit dynamic performance, with a 49.8dBFS SNR and 69dBc SFDR at 70MHz.

The MAX19505/MAX19506/MAX19507 are suitable for power-sensitive, portable applications such as ultrasound and medical imaging, portable instrumentation, and low-power DAQ systems.

Designed for space-constrained applications, these highly integrated ADCs minimise the number of external components. They include a self-sensing, analogue supply regulator that allows the user to operate the parts from 1.8-, 2.5-, or 3.3V analogue supplies with no external regulator.

In addition, they feature single-ended or differential clock inputs so clock-signal conversion isn't needed; analogue inputs with a wide, 0.4V to 1.4V input common-mode range to support AC- or DC-coupled inputs without an external AC-coupling capacitor; and an on-board clock divider to eliminate the need for an external divider. Integrated CMOS output-termination resistors allow users to program the CMOS output resistance, thus making external damping resistors unnecessary.

For flexibility of designs, the MAX19505/MAX19506/MAX19507 are pin and feature compatible with the MAX19515/MAX19516/MAX19517 10bit ADCs. The parts are packaged in a 7mm x 7mm, 48-pin TQFN and are fully specified over the -40°C to +85°C extended temperature range. Prices start at Rs.205.15 ($4.10) (1,000-up, FOB USA).

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