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Hitachi Semiconductor - RF Single-chip Linear IC for PCN Cellular Systems

Numéro de référence HD155111F
Description RF Single-chip Linear IC for PCN Cellular Systems
Fabricant Hitachi Semiconductor 
Logo Hitachi Semiconductor 





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HD155111F fiche technique
HD155111F
RF Single-chip Linear IC for PCN Cellular Systems
ADE-207-257 (Z)
1st Edition
August 1998
Description
The HD155111F was developed for PCN (DCS1800) cellular systems, and integrates most of the functions
of a transceiver. The HD155111F incorporates the bias circuit for a RF LNA, a 1st mixer, 1st-IF amplifier,
2nd mixer, AGC amplifier and an IQ quadrature demodulator for the receiver, and an IQ quadrature
modulator and offset PLL for the transmitter. Also, on chip are the dividers for the 1st & 2nd local
oscillator signals and 90˚ phase splitter. Moreover the HD155111F includes control circuits to implement
power saving modes. These functions can operate down to 2.7 V and are housed in a 48-pin LQFP SMD
package.
Hence the HD155111F can form a small size transceiver handset for PCN by adding a PLL frequency
synthesizer IC, a power amplifier and some external components. See page 7 “Configuration”.
The HD155111F is fabricated using a 0.6 µm double-polysilicon Bi-CMOS process.
Functions
Receiver (RX)
Low Noise Amplifier (LNA) bias circuit
1st mixer
IF amplifier
2nd mixer
Automatic gain control amplifier (AGC)
IQ demodulator with 90° phase splitter
Transmitter (TX)
IQ modulator with 90° phase splitter
Offset PLL
Down converter
Phase comparator
TX VCO driver

PagesPages 30
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