WIRELESS COMMUNICATIONS DIVISION

For additional information and latest specifications, see our website:

www.triquint.com

1

Electrical Characteristics

TQ9203

DATA SHEET

Low-Current Cellular

Band Downconverter IC

Features

§+5-V single supply

§Internal buffer amplifier on mixer

LO port

§On-chip matching to 50

Ω

§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

Applications

§Cellular Communications

§Spread-Spectrum Receivers

§Cordless Phones

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.

Parameter

Min

Typ

Max

Units

Frequency

800

1000

MHz

Gain

21.0

dB

Noise Figure

2.5

dB

-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

Mixer

LO In

LNA

IN0

Mixer

IF out

Mixer

RF In

LNA

out

VDD

GND

LO Tune

Select

LNA

IN1