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參數資料
| 型號： | CX74002 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Silicon Germanium CDMA Transmit/Dual PLL RFlC |
| 中文描述： | 硅鍺CDMA的發射/雙鎖相環RFlC |
| 文件頁數： | 1/2頁 |
| 文件大?。?/td> | 204K |
| 代理商： | CX74002 |
w i r e l e s s c o m m u n i c a t i o n s p r o d u c t s
Distinguishing Features
Best-in-class current consumption
Tri-mode, dual-band functionality
I/Q to RF integration
Image-reject mixer
Three battery-cell operation (2.7V < VCC < 3.6V)
Split-band PCS drivers to improve Rx Band
noise performance
Tx power control with 90dB dynamic range
Variable-gain RF block to meet in-band signal-
to-noise ratio (SNR)
6mm x 6mm land grid array (LGA)
chipscale package
Silicon Germanium CDMA
Transmit/Dual PLL RFlC
CX74002
Conexant Delivers RF Chipsets
for 2G and 3G CDMA Applications
The CX74002 device offers the highest level of integration a tri-
mode, dual-band CDMA transmit RFIC. The device is designed to
meet the needs of both 2G and 3G CDMA systems. Specifically
targeting the cdmaOne, cdma2000, and AMPS markets in the U.S.
and Korean cellular, Japan cellular, Korean PCS and U.S. PCS bands.
The CX74002 is also designed to be suitable for wideband CDMA
(WCDMA) applications in the IMT-2000 band. The device is built
using Conexant
’
s advanced silicon germanium (SiGe) bipolar
complementary metal oxide semiconductor (BiCMOS) process
technology. This process results in best-in-class current consumption
performance, hence increasing cellular phone talk time.
The CX74002 is a highly integrated super-heterodyne transmitter
(Tx) that incorporates all the active functional blocks up to the antenna:
an In-phase and Quadrature (I/Q) modulator that accepts the analog
I and Q outputs from the baseband analog processor and converts
them to intermediate frequency (IF) signals; a voltage controlled
oscillator (VCO) and very high-frequency (VHF) synthesizer to generate
the local oscillator (LO) signal for the quadrature demodulators for the
cellular and PCS bands; a UHF synthesizer to control the UHF oscilla-
tor; and a variable gain amplifier (VGA), which is required in CDMA
systems to provide linear variable output power at the antenna.
The output of the VGA is fed to the image reject mixer. The output
of the image reject mixer is fed directly to the PA pre-driver without
the need for external SAW filters, resulting in a reduction of overall
cellular phone bill-of-material cost.
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| CXA-0338 | 8W DUAL OUTPUTS |
| CXA1033P | CXA1033P |
| CXA1298 | equalizer AMP |
| CXA1298AP | equalizer AMP |
| CXA1360Q | READ/WRITE AMPLIFIER FOR FLOPPY DISK DRIVE WITH BUILT-IN FILTER |
相關代理商/技術參數 |
參數描述 |
|---|---|
| CX74005 | 制造商:SKYWORKS 制造商全稱:SKYWORKS 功能描述:VGA + I/Q Demodulator Rx ASIC for Portable Phone Applications |
| CX74016 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF MODULATOR/DEMODULATOR|BIPOLAR|LLCC|72PIN|CERAMIC |
| CX74017 | 制造商:SKYWORKS 制造商全稱:SKYWORKS 功能描述:On the Direct Conversion Receiver |
| CX74036 | 制造商:CONEXANT 制造商全稱:CONEXANT 功能描述:IS-136 Receive RF IC for TDMA and AMPS Applications |
| CX74037 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:RF MODULATOR|BIPOLAR|LLCC|48PIN|CERAMIC |
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