WIRELESS COMMUNICATIONS DIVISION
GND
RF
IN
TQ5631
DATA SHEET
GND
VDD
3V PCS Band CDMA
RFA/Mixer IC
IF
out
VDD
GIC
LO
IN
Features
Small size: SOT23-8
Single 3V operation
Low-current operation
Product Description
The TQ5631 is a 3V, RFAmplifier/Mixer IC designed specifically for PCS band CDMA
applications. It鈥檚 RF performance meets the requirements of products designed to
the IS-95 standards. The TQ5631 is designed to be used with the TQ3631 (CDMA
LNA) which provides a complete CDMA receiver for 1900MHz phones.
The RFA/Mixer incorporates on-chip switches which determine gain select states.
When used with the TQ3631 (CDMA LNA), four gain steps are available. The RF
input port is internally matched to 50
鈩?/div>
, greatly simplifying the design and keeping
the number of external components to a minimum. The TQ5631 achieves good RF
performance with low current consumption, supporting long standby times in portable
applications. Coupled with the very small SOT23-8 package, the part is ideally suited
for PCS band mobile phones.
Electrical Specifications
1
Parameter
Frequency
Gain
Noise Figure
Input 3
rd
Order Intercept
DC supply Current
Min
Typ
1960
15.0
5.7
1.0
20.0
LO input 鈥?dBm, CDMA High Gain state.
Gain Select
High IP3 performance
Few external components
Applications
IS-95 CDMA Mobile Phones
Max
Units
MHz
dB
dBm
mA
Note 1: Test Conditions: Vdd=2.8V, RF=1960MHz, LO=1750MHz, IF=210MHz, Ta=25C,
For additional information and latest specifications, see our website:
www.triquint.com
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