General Description

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.

Features

♦ Dual 10-Bit, 11Msps Rx ADC and Dual 10-Bit,

   11Msps Tx DAC

♦ Ultra-Low Power

   37.5mW/42.7mW at fCLK = 4.915MHz/11MHz,

   FD Mode

   24.3mW at fCLK = 11MHz, Slow Rx Mode

   34.5mW at fCLK = 11MHz, Slow Tx Mode

   Low-Current Standby and Shutdown Modes

♦ Integrated CDMA Filters with > 64dBc Stopband

   Rejection

♦ Programmable Tx DAC Common-Mode DC Level

   and I/Q Offset Trim

♦ Excellent Dynamic Performance

   SNR = 54.8dB at fIN = 1.875MHz (Rx ADC)

   SFDR = 75dBc at fOUT = 620kHz (Tx DAC)

♦ Three 12-Bit, 1µs Aux-DACs

♦ 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and

   Data Averaging

♦ Excellent Gain/Phase Match

   ±0.01° Phase, ±0.01dB Gain (Rx ADC) at

   fIN = 1.87MHz

♦ Multiplexed Parallel Digital I/O

♦ Serial-Interface Control

♦ Versatile Power-Control Circuits

   Shutdown, Standby, Idle, Tx/Rx Disable

♦ Miniature 56-Pin Thin QFN Package

   (7mm x 7mm x 0.8mm)

Applications

   CDMA Handsets

   CDMA Data Cards

   Portable Communication Equipment