PMB2402 Datasheet, PDF (1/21 Pages) Siemens Semiconductor Group – GSM Receiver Circuit

GSM Receiver Circuit
PMB 2402
Preliminary Data
Bipolar IC
Features
q Heterodyne receiver with demodulator
q Down mixing from 900 MHz receiver band to the base
band
q Demodulation and generation of I/Q-baseband
components
q Low mixer noise 10 dB (SSB)
q Input high intercept point + 2 dB
q Integrated 0˚ and 90˚ phase shifter
q 82 dB AGC-range
q On-chip second LO-oscillator with external tuning circuit
q Two differential operational amplifiers
q Low power consumption due to highly flexible power-
down capability
q Wide input frequency range up to 1 GHz
q Wide IF-range from 35 MHz to 100 MHz
q Wide output frequency range up to 13.5 MHz
q P-DSO-28-4 shrink package
q Temperature range – 25 ˚C to 85 ˚C
P-DSO-28-4
Applications
q Digital mobile cellular systems as GSM, DAMPS, JDC
q Various demodulation schemes, such as PM, PSK, FSK, QAM, QPSK, GMSK
q Space and power saving optimizations of existing discrete demodulator circuits
Type
PMB 2402S
PMB 2402S
Version
V 2.1
V 2.1
Ordering Code
Q67000-A6072
Q67006-A6072
Package
P-DSO-28-4
(Shrink, SMD))
P-DSO-28-4 (Shrink,
SMD, Tape + Reel)
Functional Description
The PMB 2402 is a single-chip single-conversion heterodyn PM-receiver with phase shifting
circuitry for the I/Q-phase baseband demodulation on chip. It also includes the second local
oscillator, a gain controlled second IF-amplifier, two differential operational amplifiers for baseband
filtering purposes and power down circuitry.
The PMB 2402 is designed for digital mobile telephones according to the GSM-standard and other
digital systems.
Semiconductor Group
1
01.94