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F1375 Datasheet(PDF) 1 Page - Renesas Technology Corp |
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F1375 Datasheet(HTML) 1 Page - Renesas Technology Corp |
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1 / 27 page  DPD Demodulator for PA Linearization 1300MHz to 2900MHz F1375 Datasheet Zero-DistortionTM, Glitch-FreeTM DPD Receiver 1 February 7, 2022 DESCRIPTION This document describes the preliminary specification for the F1375 Digital Pre-Distortion Demodulator for PA linearization. This series of devices is offered in two frequency variants to cover common UTRA bands. COMPETITIVE ADVANTAGE In typical basestation transmitters digital pre-distortion is employed to improve the Transmitter performance. The signal out of the PA is sampled and the incoming Tx chain I&Q data is pre-distorted to counteract the distortion inherent in the PA. The PA signal is adjusted via a digital step attenuator 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 w/integrated DSA such as the F1375, the ACLR and/or power consumption of the full Tx system can be improved significantly. D DP PD D ffu ullll p pa atth h A AC CL LR R:: ⇓ ⇓ 11 d dB B IIcccc:: D DP PD D ffu un nc cttiio on n P Po ow we err C Co on ns su um mp pttiio on n ⇓ ⇓ 4400% % Z Ze erro o--D Diis stto orrttiio on nTTM M D De em mo od d e elliim miin na atte es s 2 2 IIF F a am mp ps s IIn ntte eg grra atte es s 2 2 B BP PF Fs s,, 2 2 B Ba allu un ns s,, S SP P2 2T T R RF F s sw wiittc ch h G Glliittc ch h--F Frre ee eTTM M g ga aiin n c co on nttrro oll PART# MATRIX Part# RF range UTRA bands IF freq range Typ. Gain Injection F F1 13 32 25 5 5 55 50 0 -- 1 11 15 50 0 5 5,,6 6,,8 8,,1 12 2,,1 13 3,, 1 14 4,,1 17 7 2 20 0 -- 3 35 50 0 8 8..2 2 H Hiig gh h S Siid de e o orr L Lo ow w S Siid de e F F1 13 37 75 5 1 13 30 00 0 -- 2 29 90 00 0 1 1,,2 2,,3 3,,4 4,,9 9,,1 10 0 7 7,,2 21 1,, 2 24 4,, 3 38 8 2 20 0 -- 5 50 00 0 9 9 H Hiig gh h S Siid de e o orr L Lo ow w S Siid de e FEATURES (I OR Q PATH) • Wide flat performance IF BW • Wide RF and LO BWs (~ 1.6 GHz) • Ideal for Multi-Carrier Systems •• D Drriiv ve es s A AD DC C d diirre ec cttlly y • Ultra linear + +4 40 0 d dB Bm m IIP P3 3O O • Low Noise Figure • Excellent ACLR performance • 100 Ω output impedance • Fully integrated DPD demodulator •• 6 6 x x 6 6 m mm m 3 36 6--p piin n p pa ac ck ka ag ge e • Standby Mode w/Fast Recovery • ICC: 2 27 70 0 m mA A DEVICE BLOCK DIAGRAM ORDERING INFORMATION IFI IBIAS Bias Control STBY IFQ 90 O DEC CLK SPI CSb SDI RFIN_X RFIN_Y . SPLIT LOIN ISET 2 RF_SEL RF VCO F1375NBGI8 0.8 mm height package Green Industrial Temp range RF product Line Tape & Reel Glitch-FreeTM Glitch-FreeTM |
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