DAC suits wireless communication

28 October 2009 Analogue, Mixed Signal, LSI

Analog Devices introduced a dual-channel, 1,2 GSps, 16-bit DAC that supports the high data rates and complex modulation schemes required for advanced multicarrier wireless and broadband communications equipment. Featuring an on-chip 32-bit NCO (numerically-controlled oscillator) that allows flexible placement of the IF to help optimise system performance, the AD9122 satisfies requirements for multistandard cellular base stations and other applications that use sophisticated DPD (digital pre-distortion) techniques demanding broad signal bandwidths. The wireless communications standards that the device supports include GSM, WCDMA, TD-SCDMA, CDMA2000, WiMAX and LTE. The AD9122 includes an on-chip PLL with low jitter and phase noise. Operating with the on-chip PLL at a DAC output frequency of 150 MHz, the device delivers a 76 dB ACLR for single-carrier WCDMA applications.

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