TQ5638 Datasheet, PDF (1/11 Pages) TriQuint Semiconductor – 2.8V SIGE DUALl-MODE CDMA Rx RECEIVER

WIRELESS COMMUNICATIONS DIVISION
`
Iset
Logic Control
PM_OUT+
TQ5638
PRELIMINARY DATA SHEET
2.8V SiGe Dual-Mode CDMA
Rx Receiver
PLNA_IN
PM_OUT-
Features
VDD_LNA
GLNA_IN
TQ5638
MIX_GND
Vdd_MIX
ƒ KPCS-CDMA and GPS operation
ƒ Excellent Cross Modulation Performance
ƒ Low current consumption
GPS_GND
GM_OUT+
ƒ 9.0 dBm PCS LNA IIP3
VDD_LO
GM_OUT-
ƒ 11.0 dBm PCS Mixer IIP3
ƒ Excellent Noise and Gain performance
ƒ Adjustable third order intercept on LNA
stage
Product Description:
ƒ Flexible IF frequency range from 80 – 230
MHz
ƒ TX LO Buffer included
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 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 front-
end receiver is capable of meeting all electrical requirements in accordance with the
TIA/EIA 98-C Wireless Communication standard.
Selected Cascade Electrical Specifications:
Operating Mode (Cascade)
PCS-Band, High-Gain, High Linearity
A-GPS
Cascade
Gain
(dB)
26
37
Cascade
NF
(dB)
2.2
1.7
Cascade
IP3
(dBm)
-2.0
-17.5
Current
(mA)
28
19
ƒ Small 4x4 Package
ƒ Full ESD Protection
ƒ Few external components
System Advantage
ƒ Most compact integrated receiver for KPCS
CDMA and A-GPS applications
ƒ IS-98 IMD requirements met with 2 gain
states simplifying calibration procedures
ƒ High mixer linearity eliminates potential call
drop issues associated with gain switching
ƒ Enhanced PCS linearity enables use of
FBAR or SAW PCS duplexers
ƒ Best I in class A-GPS cascade gain for
maximum takeover
Note 1: Test Conditions CDMA Mode: VCC=2.75VDC, Tc=25°C, IS-95/98 Modulation, Data includes the
following image reject filters (PCS – SAWTEK P/N 856080, GPS – SAWTEK P/N 856135)
Package Pin-out:
Applications
ƒ KPCS band/A-GPS CDMA (IS-95/98) based
mobile phones
For additional information and latest specifications, see our website: www.triquint.com
1