TQ5635 Datasheet, PDF (1/25 Pages) TriQuint Semiconductor – 3 V PCS LNA/Mixer Receiver IC

WIRELESS COMMUNICATIONS DIVISION
GND/LNA
Gain
GND/LNA
Gain
LNA Out
Mixer
Vdd
1
GND
Active
Bias
MXR In
TQ5635
DATA SHEET
3 V PCS LNA/Mixer
Receiver IC
RF In
GND
LNA
Bias
LNA
active
bias
Mixer
IF Amp
LO Buffer
GND
LO
Vdd
LO
In
LNA Vdd
GND
IF Out
GIC
Product Description
The TQ5635 is an LNA-Downconverter optimized for use in the Korea CDMA
PCS bands. The integrated LNA has a single high gain mode that provides over
15 dB of gain, and features very low NF and excellent IP3. An external resistor
controls LNA bias, making LNA Idd adjustable. The integrated mixer features
very high IP3 and provision for external adjustment of gain, IP3, and Idd.
Because of the external LO tuning inductor, IF’s in the range of 85 to 200Mhz
can be used. The excellent RF performance with low current coupled with very
small lead-less plastic package is ideally suited for PCS band mobile phone.
Electrical Specifications¹
Parameter
Min
Typ
Max
Units
RF Frequency
Conversion Gain
1855
MHz
24.5
dB
Noise Figure
2.3
dB
Input 3^rd Order Intercept
DC supply Current
-4.75
dBm
23.4
mA
Note 1. Test Conditions: Vdd=+2.8V, TC=+25C, RF=1855MHz, RF in =-30dBm LO=1635MHz,
LO input=-4dBm, IF=220MHz
2. Data includes image reject filter (Sawtek P/N: 356083) insertion loss of 1.7 dB
Features
?? Single 3.0 V Operation
?? Adjustable Gain/IP3/Current
?? Low Current Operation
?? Few external components
?? QFN 3x3 mm, 16 Pin Leadless Plastic
Package
?? High Input IP3
?? Low Noise Figure
Applications
?? PCS band CDMA mobile Applications
?? Wireless data applications
For additional information and latest specifications, see our website: www.triquint.com
1