High-band DPD Demodulator with Integrated DSA and RF Switch

The IDT F1370 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, the ACLR and/or power consumption of the full Tx system can be improved significantly.

Features

  • Wide flat performance IF BW
  • Wide RF and LO BWs (~ 1.6 GHz)
  • Ideal for Multi-Carrier Systems
  • Drives ADC directly
  • Ultra linear +41 dBm IP3O
  • Low Noise Figure
  • Excellent ACLR performance
  • 200 Ω output impedance
  • Fully integrated DPD demodulator
  • 6x6 36 pin package
  • Standby Mode with Fast Recovery
  • ICC:  275 mA

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
F1370NBGI Active NBG36P1 VFQFPN 36 I Yes Tray Availability
F1370NBGI8 Active NBG36P1 VFQFPN 36 I Yes Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
F1370 Datasheet Rev4 Datasheet PDF 1.32 MB Jan 15, 2014
PCNs & PDNs
PCN# : TB1602-01 Alternate Test Location for Select Devices Product Change Notice PDF 39 KB Mar 14, 2016
PCN# : A1406-01R1 Add Alternate Assembly Product Change Notice PDF 35 KB Oct 13, 2015
PCN# : A1406-01 Alternate Assembly Locations for Selective Package Product Change Notice PDF 33 KB Apr 5, 2015
Other
F1370 S-Parameters Model - S-Parameter ZIP 168 KB Sep 21, 2016

Evaluation Boards

Part Number Title Sort ascending
F1370EVBI Evaluation Board for F1370 DPD Demodulator