14-bit ADC touts best-in-class SFDR at low power

4 October 2006 Analogue, Mixed Signal, LSI

Analog Devices has released a 14-bit, 150 MSPS analogue-to-digital converter, claiming it to have the best dynamic range of any competing ADC. The new AD9254 also consumes only 430 mW - a 50% reduction in power consumption over existing solutions, it says. Suited to WiMAX and picocell base station receivers, as well as ultrasound and handheld instrumentation equipment, the chip features 83-dBc SFDR (spurious-free dynamic range) at 70 MHz. In addition to achieving the highest SFDR in its class, the AD9254 has a signal-to-noise ratio of 72,7 dBFS at 70 MHz says ADI. Its high sample rate also allows designers to realise the benefits of a lower noise floor and simplified AGC loop. The digital output data is presented in offset binary, Gray code, or twos complement formats. A data output clock (DCO) is provided to ensure proper latch timing with receiving logic. The device is pin-compatible with the AD9246 and AD9233 ADCs and can be used with ADI's AD8352 driver IC. It comes in a 48-lead LFCSP_VQ.

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