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General Description

The MAX19707 is an ultra-low-power, mixed-signal analog front-end (AFE) designed for power-sensitive communication equipment. Optimized for high dynamic performance at ultra-low power, the device integrates a dual, 10-bit, 45Msps receive (Rx) ADC; dual, 10-bit, 45Msps 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 Tx-Rx FAST mode is 84.6mW at a 45MHz clock frequency.

The Rx ADCs feature 54.2dB SNR and 71.2dBc SFDR at fIN = 5.5MHz and fCLK = 45MHz. The analog I/Q input amplifiers are fully differential and accept 1.024VP-P full-scale signals. Typical I/Q channel matching is ¡À0.03¡ã phase and ¡À0.01dB gain.

Features

? Dual, 10-Bit, 45Msps Rx ADC and Dual, 10-Bit,

?? 45Msps Tx DAC

? Ultra-Low Power

?? 84.6mW at fCLK = 45MHz, Fast Mode

?? 77.1mW at fCLK = 45MHz, Slow Mode

?? Low-Current Standby and Shutdown Modes

? Programmable Tx DAC Common-Mode DC Level

?? and I/Q Offset Trim

? Excellent Dynamic Performance

?? SNR = 54.2dB at fIN = 5.5MHz (Rx ADC)

?? SFDR = 73.2dBc at fOUT = 2.2MHz (Tx DAC)

? Three 12-Bit, 1?s Aux-DACs

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

?? Data Averaging

? Excellent Gain/Phase Match

?? ¡À0.03¡ã Phase, ¡À0.01dB Gain (Rx ADC) at

?? fIN = 5.5MHz

? Multiplexed Parallel Digital I/O

? Serial-Interface Control

? Versatile Power-Control Circuits

?? Shutdown, Standby, Idle, Tx/Rx Disable

? Miniature 48-Pin Thin QFN Package

?? (7mm x 7mm x 0.8mm)

Applications

?? WiMAX CPEs

?? 802.11a/b/g WLAN

?? VoIP Terminals

?? Portable Communication Equipment