WIRELESS COMMUNICATIONS DIVISION
TQ5633
RF
INPUT
RF
IN
VDD RF Amplifier
Vdd
LO
IN
LO Input
RF amplifier
Control
DATA SHEET
GND
IF Common
Mode Tune
3V PCS Band CDMA
RFA/Mixer IC
Tune
GND
Mixer
Vdd
VDD
IF
out
IF
OUTPUT
Features
Small size: SOT23-8
Single 3V operation
Low-current operation
Product Description
The TQ5633 is a 3V, RF Amplifier/Mixer IC designed specifically for PCS band
CDMA applications. It’s RF performance meets the requirements of products
designed to the IS-95 standard. The TQ5633 is designed to be used with an IF
frequency of 110MHz, and uses a balanced mixer to achieve �½ IF rejection. When
used with the TQ3631 or TQ3632 (CDMA LNAs) it provides a complete CDMA
receiver for 1900MHz phones.
The RF Amplifier/Mixer incorporates on-chip switches which determine two gain
select states. The RF and LO input ports are internally matched to 50
Ω
, greatly
simplifying the design and keeping the number of external components to a
minimum. The TQ5633 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
16.0
5.8
-0.5
23.0
LO input –4dBm, CDMA High Gain state.
Gain Select
High IP3 performance
Few external components
Excellent �½ IF rejection
110MHz IF Frequency
50
Ω
RF and LO inputs
Applications
IS-95 CDMA Mobile Phones
Wireless Local Loop
PCS Micro-cell
Max
Units
MHz
dB
dB
dBm
mA
Note 1: Test Conditions: Vdd=2.8V, RF=1960MHz, LO=2070MHz, IF=110MHz, Ta=25C,
For additional information and latest specifications, see our website:
www.triquint.com
1
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