MAX19711 10-Bit, 11Msps, Full-Duplex, Analog Front-End

The MAX19711 is an ultra-low-power, highly integrated Mixed-Signal Analog front-end (AFE) ideal for CDMA Communication applications operating in full-duplex (FD) mode. Optimized for high dynamic performance and ultra-low power, the device integrates a dual 10-bit, 11Msps receive (Rx) ADC; dual 10-bit, 11Msps transmit (Tx) DAC with CDMA baseband filters; three fast-settling 12-bit aux-DAC channels for ancillary Rf Front-End control; and a 10-bit, 333ksps housekeeping aux-ADC. The typical operating power in FD mode is 37.5mW/42.7mW at a 4.915MHz/11MHz Clock frequency. The Rx ADCs feature 54.8dB SNR and 74.2dBc SFDR at 1.875MHz input frequency with an 11MHz Clock frequency. The Analog I/Q input Amplifiers are fully differential and accept 1.024VP-P full-scale signals. Typical I/Q channel matching is 0.01 phase and &plu 4f4 smn;0.01dB gain. The Tx DACs with CDMA lowpass Filters feature -3dB cutoff frequency of 1.3MHz and > 64dBc stopband rejection at fIMAGE = 4.285MHz at fCLK = 4.915MHz. The Analog I-Q full-scale output voltage range is selectable at 410mV or 500mV differential. The output DC common-mode voltage is selectable from 0.86V to 1.36V. The I/Q channel offset is adjustable to optimize Radio lineup sideband Carrier suppression. Typical I-Q channel matching is 0.03dB gain and 0.07 phase. Two independent 10-bit parallel, high-speed digital buses used by the Rx ADC and Tx DAC allow full-duplex operation for frequency-division duplex applications. The Rx ADC and Tx DAC CAN be disabled independently to optimize Power Management A 3-wire serial Interface controls power-management modes, the aux-DAC channels, and the aux-ADC channels. The MAX19711 operates on a single 2.7V to 3.3V Analog supply and 1.8V to 3.3V digital I/O supply. The MAX19711 is specified for the extended (-40C to +85C) temperature range and is available in a 56-pin, thin QFN package. The Selector Guide at the end of the data sheet lists other pin-compatible versions in this AFE family. 4e8 For time-division duplex (TDD) applications, refer to the MAX19705 MAX19708 AFE family of products.
By Maxim Integrated Products