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Broadband Receiver/Vector Demodulator
PMB 2402
General Description The PMB 2402 is a single-chip single-conversion heterodyne receiver with phase shifting circuitry for the l/Q phase local baseband demodulation on chip. It also includes the second oscillator, a gain controlled second IF amplifier, two differential operational amplifiers for baseband fitering purposes and power-down circuitry. The PMB 2402 is designed for digital mobile telephones according to the GSM standard and other digital systems. Applications * Digital wideband systems as CATV, Satellite, DBS, WLAN * Various demodulation schemes, such as PM PSK, FSK, QAM, QPSK, GM * Space and power saving optimization of existing discrete demodulator circuit
Type PMB 2402-S Features
Package P-DSO-28-1 (SMD)
* Heterodyne receiver with demodulators * Down mixing from 900 MHz receiver band to the base band * Demodulation and generation of I/Q-baseband components * Low mixer noise 10 dB (SSB) * Input high intercept point + 2 dBm * Integrated 0 and 90 phase shifter * 82 dB AGC range * On-chip second LO oscillator with external tuning circuit * Low power consumption due to highly flexible power-down capability * Wide input frequency range up to 1 GHz * Wide IF range from 35 MHz to 100 MHz * Wide output frequency range up to 13.5 MHz * Temperature range - 25 C to 85 C
MO MO IFI IFI
OUTI OUTI + Diff. Op. Amp. INI INI Output Driver SOI SOI 0 Divider by two Divider by two 90 SOQ SOQ Second Mixer Q + Output Driver Diff. Op. Amp. INQ INQ Divider by two LO 2B LO 2E
First Mixer SI SI LO-Buffer Amp. LO 1 LO 1
AGC
Second Mixer I
Standby RF
Standby IF
V S GND
Block Diagram
PD 1
PD 2
GC LO 2O OUTQ OUTQ
ITB03903
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