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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-Pfull-scale signals. Typical I/Q channel matching is ±0.01° phase and ±0.01dB gain.

Features

1. Dual 10-Bit, 7.5Msps Rx ADC and Dual 10-Bit, 7.5Msps Tx DAC
2. Ultra-Low Power
 (1) 30mW at fCLK= 7.5MHz, FD Mode
 (2) 21.3mW at fCLK= 7.5MHz, Slow Rx Mode
 (3) 21.9mW at fCLK= 7.5MHz, Slow Tx Mode
 (4) Low-Current Standby and Shutdown Modes
3. Programmable Tx DAC Common-Mode DC Level and I/Q Offset Trim
4. Excellent Dynamic Performance
 (1) SNR = 54.9dB at fIN = 3.3MHz (Rx ADC)
 (2) SFDR = 73.8dBc at fOUT= 620kHz (Tx DAC)
5. Three 12-Bit, 1μs Aux-DACs
6. 10-Bit, 333ksps Aux-ADC with 4:1 Input Mux and Data Averaging
7. Excellent Gain/Phase Match ±0.01° Phase, ±0.01dB Gain (Rx ADC) at fIN = 1.8MHz
8. Multiplexed Parallel Digital I/O
9. Serial-Interface Control
10. Versatile Power-Control Circuits Shutdown, Standby, Idle, Tx/Rx Disable