MAX19706

19-3867; Rev 0; 10/05 KIT ATION EVALU E L B A AVAIL 10-Bit, 22Msps, Ultra-Low-Power Analog Front-End General Description Features ♦ Dual, 10-Bit, 22Msps Rx ADC and Dual, 10-Bit, 22Msps Tx DAC ♦ Ultra-Low Power 49.5mW at fCLK = 22MHz, Fast Mode 39.3mW at fCLK = 22MHz, Slow Mode Low-Current Standby and Shutdown Modes ♦ Programmable Tx DAC Common-Mode DC Level and I/Q Offset Trim ♦ Excellent Dynamic Performance SNR = 54.6dB at fIN = 5.5MHz (Rx ADC) SFDR = 72.6dBc at fOUT = 2.2MHz (Tx DAC) ♦ Three 12-Bit, 1µs Aux-DACs ♦ 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and Data Averaging Mode ♦ Excellent Gain/Phase Match ±0.12° Phase, ±0.01dB 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) MAX19706 The MAX19706 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, 22Msps receive (Rx) ADC; dual, 10-bit, 22Msps transmit (Tx) DAC; three fast-settling 12-bit auxDAC 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 49.5mW at a 22MHz clock frequency. The Rx ADCs feature 54.6dB SNR and 75.6dBc SFDR at a 5.5MHz input frequency with a 22MHz clock frequency. The analog I/Q input am...