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RF210A

Conexant Systems
Part Number RF210A
Manufacturer Conexant Systems
Description (RF210A / RF210B) Image-Reject Downconverters
Published Jan 10, 2007
Detailed Description www.DataSheet4U.com Do not use for new designs. Use the RF212 device instead (Data Sheet No. 100780) RF210A and RF210B...
Datasheet PDF File RF210A PDF File

RF210A
RF210A

Overview
www.
DataSheet4U.
com Do not use for new designs.
Use the RF212 device instead (Data Sheet No.
100780) RF210A and RF210B Dual-Band, Image-Reject Downconverters For GSM Applications The RF210A and RF210B devices are available as a dual-band front end for Global System for Mobile Communications (GSM) handset applications.
Both of these highly integrated, monolithic devices are optimized for dual-band use in GSM900/DCS1800 or GSM 900/PCS1900 applications.
The devices include two Low Noise Amplifiers (LNAs), two image-reject mixers, and two Local Oscillator (LO) buffer amplifiers.
The main advantage of the RF210A and RF210B is their ability to provide 30 dB of image rejection for both the GSM900 and the DCS1800 (or PCS1900) bands without requiring the use of a post-LNA image reject filter.
A block diagram of the RF210(A/B) is shown in Figure 1.
The device package and pin configuration are shown in Figure 2.
Features • LNA/image-reject mixer for RF to IF conversion • 10 dB (RF210A) or 20 dB (RF210B) switchable gain for GSM • 8 dB (RF210A) or 16 dB (RF210B) switchable gain for DCS/PCS • 30 dB of image rejection.
No post-LNA filtering required • High isolation LO input buffer • Differential IF output • High dynamic range • Three-cell battery operation (2.
7 to 5 V) • 20-pin Thin Shrink Small Outline Package (TSSOP) Applications • Dual-band digital cellular mobile telephony (GSM900/DCS 1800 or GSM900/PCS1900) NC LNA900GND LNA900IN 0 90 90 IFOUT 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 MIXVCC MIXGND BYP900 IFOUT+ IFOUTBYP1800 BANDSEL LOIN LOGND ADJMIX C067 BIASGND LNA900IN GAINSEL BIASVCC IRM LNAVCC 0 LNA1800IN 90 LOIN GAINSEL LNA1800IN LNA1800GND BANDSEL BYP900 BIAS ENA BYP1800 C069 Figure 1.
RF210(A/B) Block Diagram Figure 2.
RF210(A/B) Pin Configuration – 20-Pin TSSOP Data Sheet Conexant Proprietary Information and Specifications are Subject to Change Doc.
No.
100775A October 20, 1999 RF210(A/B) Image-Reject Downconverter Technical Descripti...


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