F1451EVSK Renesas

TX Digital VGA F1451 Datasheet 450MHz to 1100MHz Description Features The F1451 is a High Gain / High Linearity 450MHz to 1100MHz TX Broadband 450MHz to 1100MHz Digital Variable Gain Amplifier used in transmitter applications. 32dB maximum gain 3.6dB NF at maximum gain (900MHz) The F1451 TX DVGA provides 32dB maximum gain with +41.5dBm 29.5dB total gain control range, 0.5dB step OIP3 and 3.6dB noise figure. Up to 29.5dB gain control is achieved using the combination of a digital step attenuator (DSA) and a < 2dB overshoot between gain transitions TM K RF Digital Gain Amplifier. This device uses a single 5V LIN Maintains flat +23dBm OP1dB for more than 13dB gain supply and 185mA of I . CC adjustment range Maintains flat +41dBm OIP3 for more than 15dB gain This device is packaged in a 6 6 mm, 28-pin VFQFPN with 50 adjustment range single-ended RF input and RF output impedances for ease of SPI interface for DSA control integration into the signal-path. Single 5V supply voltage Competitive Advantage I = 185mA CC Up to +105C T operating temperature CASE In typical Base Stations, RF VGAs are used in the TX traffic paths to drive the transmit power amplifier. The F1451 TX DVGA offers 50 input and output impedance very high reliability due to its construction from a monolithic silicon Standby mode for power savings die in a QFN package. The F1451 is configured to provide an Pin compatible 2100MHz and 2700MHz versions optimum balance of noise and linearity performance consisting of 6 6 mm, 28-VFQFPN package TM a K RF amplifier, digital step attenuator (DSA) and a PA driver LIN TM amplifier. The K amplifier maintains the OIP3 and output P1dB LIN performance over an extended attenuation range when compared Block Diagram to competitive devices. Figure 1. Block Diagram Typical Applications Multi-mode, Multi-carrier Transmitters KLIN Constant TM WiMAX and LTE Base Stations High Linearity TM PA Driver K DVGA DSA UMTS/WCDMA 3G Base Stations LIN PHS/PAS Base Stations RF IN RF OUT Public Safety Infrastructure SPI & Bias 6 mm x 6 mm Decoder 28-pin 3 Digital CTL /STBY 2020 Renesas Electronics Corporation 1 January 15, 2020 F1451 Datasheet Pin Assignments Figure 2. Pin Assignments for 6 6 0.9 mm QFN Package Top View 1 21 CSb GND 2 20 DATA NC F1451 19 3 NC CLK 18 4 RSET NC Exposed Pad (GND) 17 5 GND GND 16 6 RFIN RFOUT 15 7 GND GND 2020 Renesas Electronics Corporation. 2 January 15, 2020 28 8 VCC NC 27 9 GND NC 26 10 NC NC 25 11 NC NC 24 12 NC NC 23 13 GND NC 22 14 NC /STBY