CX74063
RF Transceiver With Power Ramping Controller and Integrated Crystal Oscillator With 13 MHz Output for Multi-Band GSM, GPRS and EDGE Applications

The CX74063 transceiver is a highly integrated device for multiband Global System for Mobile Communications (GSM) or General Packet Radio Service (GPRS) applications. The device requires a minimal number of external components to complete a GSM radio subsystem. The CX74063 supports GSM850, EGSM900, DCS1800, and PCS1900 applications. The receiver also supports Enhanced Data for GSM Evolution (EDGE) downlink applications.

The receive path implements a direct down-conversion architecture that eliminates the need for Intermediate Frequency (IF) components. The CX74063 receiver consists of three integrated Low Noise Amplifiers (LNAs), a quadrature demodulator, tunable receiver baseband filters, and a DC Offset Correction (DCOC) sequencer.

In the transmit path, the device consists of an In-phase and Quadrature (I/Q) modulator within a frequency translation loop designed to perform frequency up-conversion with high output spectral purity. This loop also contains a phase-frequency detector, charge pump, mixer, programmable dividers, and high power transmit Voltage Controlled Oscillators (VCOs) with no external tank required. With the integrated gain controller (and an integrator ), the device realizes the Power Amplifier Control (PAC) functionality when combined with a coupler, a Radio Frequency (RF) detector, and a Power Amplifier (PA).

The CX74063 also features an integrated, fully programmable, sigma-delta fractional-N synthesizer suitable for GPRS multi-slot operation. Except for the loop filter, the frequency synthesizer function, including a wideband VCO, is completely on-chip. The reference frequency for the synthesizer is supplied by the integrated crystal oscillator circuitry.

The CX74063 is available as a 56-pin, RFLGA 8 x 8 mm package with either a circular ground pad or a four-quadrant ground pad.

Features

  • Direct down-conversion receiver eliminates the image reject/IF filters
  • Three separate LNAs with single-ended inputs
  • RF gain range: GSM = 20 dB, DCS/PCS = 22 dB. Baseband gain range = 100 dB
  • Gain selectable in 2 dB steps
  • Integrated receive baseband filters with tunable bandwidth
Product Summary CX74063:RF Transceiver With Power Ramping Controller and Integrated Crystal Oscillator With 13 MHz Output for Multi-Band GSM,GPRS,and EDGE Applications 103008C.pdf (147 KB)
Last Time Buy Product Discontinuance Notification RFS 09-20-2007 RFS_ProductDiscontinuance_9-20-07.pdf (22 KB)
ProductName : CX74063
Description : RF Transceiver With Power Ramping Controller
and Integrated Crystal Oscillator With 13 MHz Output
for Multi-Band GSM, GPRS, and EDGE Applications
Package (mm) : RFLGA™ 56-pin, 8 x 8
Product Information:
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