F1358中文资料High Frequency-band DPD Demodulator with Integrated DSA and RF Switch数据手册Renesas规格书

描述 Description

The IDT F1358 is a highly linear complex IF digital pre-distortion (DPD) demodulator with built-in digital step attenuator (DSA) and single-pole-double-throw switches (SP2Ts). It receives the signal coming out of the PA so that the I&Q data at Baseband can be pre-distorted before being sent to the Tx DAC to counteract the distortion inherent in the downstream PA. The signal coupled from the PA is adjusted via a DSA to a lower level and then sub-sampled at an IF frequency of ~200 MHz which necessitates the need for a highly linear demodulator to downmix to quadrature IF from the Transmit frequency. By sampling IF_I and IF_Q independently and then digitally combining these signals, an effective doubling of the sample rate can be achieved. Any distortion in this path will degrade the performance of the DPD algorithm. By utilizing an ultra-linear demodulator with integrated DSA such as the IDT F1320/F1370, the ACLR and/or power consumption of the full Tx system can be improved significantly.

特性 Features

Wide flat performance IF BW
Wide RF and LO BWs (~ 800 MHz)
Ideal for Multi-Carrier Systems
Drives ADC directly
Ultra linear +42 dBm IP3O
Excellent ACLR performance
200 Ω output impedance
Fully integrated DPD demodulator
6x6mm 36-pin package
Standby Mode with Fast Recovery
ICC:  230 mA