General Description

The MAX19710 is an ultra-low-power, highly integrated mixed-signal analog front-end (AFE) ideal for wideband communication applications operating in full-duplex (FD) mode. Optimized for high dynamic performance and ultra-low power, the device integrates a dual 10-bit, 7.5Msps receive (Rx) ADC; dual 10-bit, 7.5Msps transmit (Tx) DAC; 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 30mW at a 7.5MHz clock frequency.

The Rx ADCs feature 54.8dB SINAD and 79.8dBc SFDR at 3.3MHz input frequency with a 7.5MHz 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 ±0.01dB gain.

Features

♦ Dual 10-Bit, 7.5Msps Rx ADC and Dual 10-Bit,

   7.5Msps Tx DAC

♦ Ultra-Low Power

   30mW at fCLK = 7.5MHz, FD Mode

   21.3mW at fCLK = 7.5MHz, Slow Rx Mode

   21.9mW at fCLK = 7.5MHz, Slow Tx Mode

   Low-Current Standby and Shutdown Modes

♦ Programmable Tx DAC Common-Mode DC Level

   and I/Q Offset Trim

♦ Excellent Dynamic Performance

   SNR = 54.9dB at fIN = 3.3MHz (Rx ADC)

   SFDR = 73.8dBc 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 = 1.8MHz

♦ 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

   Broadband Access Radio

   Private Mobile Radio

   Portable Communication Equipment