TQ9203 Datasheet, PDF (1/12 Pages) TriQuint Semiconductor – Low-Current Cellular Band Downconverter IC

WIRELESS COMMUNICATIONS DIVISION
Mixer
LO In
LNA
IN0
Select
LNA
IN1
VDD
Mixer
IF out
Mixer
RF In
LNA
out
TQ9203
DATA SHEET
Low-Current Cellular
Band Downconverter IC
GND
LO Tune
Product Description
The TQ9203 RFIC Downconverter is a multifunction RF front end designed for the
high dynamic range cellular communications standards. The design of the TQ9203
provides a 2.5dB system noise figure for excellent sensitivity, and a good signal
range with –10dBm input IP3. Its low current consumption, single +5V operation and
small, plastic surface-mount package are ideally suited for cost-competitive, space-
limited and portable applications. In addition, two selectable RF inputs simplify
implementation of “antenna diversity”in applications such as CDPD. The TQ9203 is
specified over a RF frequency range of 800 to 1000MHz, and therefore may be used
for any of the cellular and cordless telephony standards.
Electrical Specifications¹
Features
§+5-V single supply
§Internal buffer amplifier on mixer
LO port
§On-chip matching to 50Ω
§Two selectable RF inputs
§Low-cost SO-14 plastic package
§21dB system gain
§-10dBm typical input intercept point
§2.5dB typ. system noise figure
§10.5mA typ. operating current
Parameter
Frequency
Min
Typ
Max
Units
800
1000
MHz
Gain
21.0
dB
Noise Figure
2.5
dB
Input 3^rd Order Intercept
-10.0
dBm
DC supply Current
10.5
mA
Note 1. Test Conditions: Vdd=5V, Ta=25C, filter IL=3.0dB, RF=881MHz, LO=966MHz, IF=85MHz,
LO input=-6dBm
2. Specified with external noise-matching circuit elements, with image-stripping BPF IL=3dB
3. Frequency separation of the two signals is 500KHz; BPF IL=3dB
Applications
§Cellular Communications
§Spread-Spectrum Receivers
§Cordless Phones
Electrical Characteristics
For additional information and latest specifications, see our website: www.triquint.com
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