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PDF HD155121F Data sheet ( Hoja de datos )
| Número de pieza | HD155121F | |
| Descripción | RF Transceiver IC for GSM and PCN Dual band cellular systems | |
| Fabricantes | Hitachi Semiconductor | |
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HD155121F
RF Transceiver IC for GSM and PCN Dual band cellular systems
ADE-207-265A (Z)
2nd Edition
May 1999
Description
The HD155121F is a RF transceiver IC for GSM and PCN dual band cellular systems, and integrates most
of the low power silicon functions of a transceiver. The HD155121F incorporates two bias circuits for RF
LNAs, two first mixers, a second mixer, a programmable gain amplifier, and an IQ demodulator for the
receiver, and an IQ modulator and offset PLL for the transmitter. Also, on chip are dividers for the phase
splitter. Moreover the HD155121F 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 HD155121F can form a small size transceiver handset for dual band by adding a dual PLL
frequency synthesizer IC, power amplifiers and some external components.
The HD155121F is fabricated using a 0.6 µm double-polysilicon Bi-CMOS process.
Functions
Receiver(Rx)
• Low Noise Amplifier (LNA) bias circuit
• First mixer
• IF amplifier and second mixer
• Programmable Gain Amplifier (PGA)
• IQ demodulator with 90 degree phase splitter
Transmitter(Tx)
• IQ modulator with 90 degree phase splitter
• Offset PLL
Down converter
Phase comparator
TXVCO driver
Others
• IF dividers
• Power saving control circuit
• IFVCO
1 page  
Pin Description (cont)
Pin No.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
Pin Name
BAND
IFLO
GNDDIV
VCCDIV
RFLOIN
GNDMIX1
VCCMIX1
MIX1OUT
MIX1OUTB
POONRX1
POONRX2
POONTX
MIX1INB2
MIX1IN2
HD155121F
Description
Band control (Low: GSM, High: PCN)
Output of IFVCO or Input of IF Local
GND for Divider and IFVCO
VCC for Divider and IFVCO
Input for RF Local
GND for Mixer1
VCC for Mixer1
Positive output for Mixer1 (GSM/PCN)
Negative output for Mixer1 (GSM/PCN)
Power save control for LNA and Mixer1
Power save control for Mixer2, PGA and demodulator
Power save control for modulator and OPLL
Negative input for Mixer1 (PCN)
Positive input for Mixer1 (PCN)
5
5 Page 
HD155121F
Absolute Maximum Ratings
Any stress in excess of the absolute maximum ratings can cause permanent damage to the HD155121F.
Item
Power supply voltage (VCC)
Power supply voltage (VCCCOMP)
Pin voltage
Maximum power dissipation
Operating temperature
Storage temperature
Symbol
VCC
VCCCOMP
VT
PT
Topr
Tstg
Rating
–0.3 to +4.0
–0.3 to +5.5
–0.3 to VCC+0.3 (4.0 Max)
400
–20 to +75
–55 to +125
Unit
V
V
V
mW
°C
°C
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet HD155121F.PDF ] | |
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