MAX19712集成電路（IC）的模擬前端（AFE）規(guī)格書PDF中文資料

General Description

The MAX19712 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, 22Msps receive (Rx) ADC; dual 10-bit, 22Msps 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 50.4mW at a 22MHz clock frequency.

The Rx ADCs feature 54.7dB SINAD and 75.6dBc SFDR at 5.5MHz input frequency with a 22MHz 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, 22Msps Rx ADC and Dual 10-Bit,

?? 22Msps Tx DAC

? Ultra-Low Power

?? 50.4mW at fCLK = 22MHz, FD Mode

?? 39.9mW at fCLK = 22MHz, Slow Rx Mode

?? 33.9mW at fCLK = 22MHz, 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 = 54.8dB at fIN = 5.5MHz (Rx ADC)

?? SFDR = 72.9dBc 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

? Excellent Gain/Phase Match

?? ±0.01° 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 56-Pin Thin QFN Package

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

Applications

?? WCDMA Handsets

?? 801.11a/b/g WLAN

?? RFID Readers

?? VoIP Terminals

?? Portable Communication Equipment