RF2721 Datasheet | RF Micro Devices

Description The RF2721 is a monolithic integrated quadrature demodulator intended for use in digital mobile radio receivers. In this application it is used to recover the inphase and quadrature baseband signals from the amplified and filtered IF. The RF2721 is intended for IF systems where the IF frequency ranges from 100k Hz to 500MHz, and the LO frequency is two times the IF. The IC contains all of the required ponents to implement the demodulation function of the receiver and contains a digital divider type 90° phase shifter, two double-balanced mixers, and baseband amplifiers designed to interface with analog to digital converters. The output DC offset may be slaved to the reference of the ADCs to maintain DC accuracy. Optimum Technology Matching® Applied 0.156 0.148 .018 .014 0.010 0.004 0.347 0.339 0.050 0.252 0.236 0.059 0.057 8° MAX 0° MIN 0.0500 0.0164 0.010 0.007 Package Style: SOIC-14 üSi Bi-CMOS IF1+ 1 GND 2 OSCB 3 OSCE 4 GND 5 Si BJT Ga As HBT Si Ge HBT Ga As MESFET Si CMOS Features - 5V Power Supply - On-Chip Active Device for Oscillator 14 IF IN13 VCC 12 PD 11 GND 10 I OUT 5 kΩ 9 REF IN 5 kΩ 8 Q OUT - ADC patible Outputs - Low LO Power Requirement - Digitally Controlled Power Down Mode - 100k Hz to 500MHz IF Operation POWER CONTROL LO2- 6 LO2+ 7 QUAD DIV. BY 2 Ordering Information RF2721 RF2721 PCBA Quadrature Demodulator Fully Assembled Evaluation Board Functional Block Diagram RF Micro Devices, Inc. 7628 Thorndike Road Greensboro, NC 27409, USA Tel (336) 664 1233 Fax (336) 664 0454 http://.rfmd. Rev A2 010509 2-27 QUADRATURE DEMODULATORS Absolute Maximum Ratings Parameter Supply Voltage Power Down Voltage (VPD) IF Input Level LO Input Power Operating Ambient Temperature Storage Temperature Preliminary...