WIRELESS COMMUNICATIONS DIVISION
TQ3632
C2
Control
Logic
C2
L1
DATA SHEET
VDD
GND
GND
Low Current, 3V PCS
Band CDMA LNA IC
RF
IN
LNA
gnd
RF 50 ohm
OUT RF Out
Control
Logic
C3
Features
Small size: SOT23-8
Single 3V operation
Low-current operation
Product Description
The TQ3632 is a low current, 3V, RF LNA IC designed specifically for PCS band
CDMA applications. It’s RF performance meets the requirements of products
designed to the IS-95 specifications. The TQ3632 is designed to be used with the
TQ5631 or TQ5633 (CDMA mixer) which provides a complete CDMA receiver for
1900MHz phones.
The LNA incorporates on-chip switches which determine high, low and bypass mode
select. When used with the TQ5631 or TQ5633 (CDMA RFA/mixer), four gain steps
are available for use which provide low current/high IP3 and gain. The RF output
port is internally matched to 50
Ω
, greatly simplifying the design and minimizing the
number of external components. The TQ3632 achieves excellent RF performance
with low current consumption, supporting long standby and talk times in portable
applications. Coupled with the very small SOT23-8 package, the part is ideally suited
for PCS band mobile phones.
Electrical Specifications
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Parameter
Frequency
Gain
Noise Figure
Input 3
rd
Order Intercept
DC supply Current
Min
Typ
1960
12.5
1.5
7.0
7.5
Max
Units
MHz
dB
dB
dBm
mA
Gain Select
High IP3 performance
Few external components
Applications
IS-95 CDMA PCS Mobile Phones
Note 1: Test Conditions: Vdd=2.8V, RF=1960MHz, Tc=25C, CDMA High Gain state.
For additional information and latest specifications, see our website:
www.triquint.com
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