TQ5638

Features:

`KPCS-CDMA and GPS operation
`Excellent Cross Modulation Performance
`Low current consumption
`9.0 dBm PCS LNA IIP3
`11.0 dBm PCS Mixer IIP3
`Excellent Noise and Gain performance
`Adjustable third order intercept on LNA stage
`Flexible IF frequency range from 80 230 MHz
`TX LO Buffer included
`Small 4x4 Package
`Full ESD Protection
`Few external components


Application

·KPCS band/A-GPS CDMA (IS-95/98) based mobile phones


Specifications

Symbol	Parameter	Absolute Maximum Value	Units
VCC_LNA, VCC_LO_Tx, VCC_MIX, ICC_DIG	Power Supply Voltage	-0.5 to 4.0	VDC
PCS_ON, LIN/GPS, BUFFEN	Logic Control Lines	-0.5 to 4.0	VDC
ICC_LNA, ICC_LO_Tx, ICC_MIX, ICC_DIG	Supply Currents	50	mA
PLO_IN, GLO_IN	LO Input Levels	+5.0	dBm
PLNA_IN, GPS_LNA_IN	LNA Input	+5.0	dBm
ISET_PCS	LNA IP3 Adjustment Input	1	mA
TC	Case Temperature, Survival	-40 to +100
TSTG	Storage Temperature	-40 to +150

Note: The part may not survive all maximums applied simultaneously.


Description

The TQ5638 is a CDMA Rx Receiver designed for KPCS-Band, Dual-Mode operation. The device supports KPCS CDMA and GPS. The IF range is from 80 MHz to 230MHz with external tuning. The Low Noise Amplifiers have an adjustable third order intercept (IP3) to minimize inter-modulation and cross-modulation effects. The mixers TQ5638 are designed for differential IF outputs (single-ended or differential IF for GPS modes), and they feature excellent linearity and low noise figure. This device is available in a 4X4 mm MLF package with 24 pins. The TQ5638 frontend receiver is capable of meeting all electrical requirements in accordance with the TIA/EIA 98-C Wireless Communication standard.