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TQ9222 Datasheet

  • TQ9222

  • Dual-Band TDMA LNA/Downconverter IC

  • 16頁

  • TRIQUINT

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WIRELESS COMMUNICATIONS DIVISION
Vdd
LNA OUT
MXR LO
MXR 1900
1900
1900
MXR RF
1900
TQ9222
DATA SHEET
MXR IF
1900
Vdd LNA
1900
LNA IN
1900
Vdd LNA
800
LNA IN
800
Dual-Band TDMA
LNA/Downconverter IC
MXR IF
800
MXR RF
800
LNA OUT Vdd
800
MXR 800
MXR LO
800
Features
摟
Pin compatible with TQ5121
摟
Single 3 V operation
摟
Low-current operation
摟
Low-frequency IF capability
摟
Excellent 錕?frac12; IF rejection
摟
IF output combining
摟
50
鈩?/div>
matched inputs (most ports)
摟
QSOP-24 plastic package
Product Description
The TQ9222 is a 3-V, RF receiver IC designed specifically for dual-band TDMA
applications. Its RF performance meets the requirements of products designed to
the IS-136 and GSM standards. The TQ9222 is pin compatible with TQ5121 (cellular
band LNA/Mixer) which enables handset designers to use strategic board platform
strategy.
The TQ9222 contains two separate LNA+Mixer circuits to handle both the 800 MHz
cellular band and the 1900 MHz PCS band. The mixers use a high-side LO
frequency, with the IF covering a range of 70-140 MHz. IF frequencies below 120
MHz are possible due to the 錕?frac12;-IF spurious signal rejection in the 1900 MHz
LNA+Mixer. The IF outputs are designed for use of a common IF frequency. Most
RF ports are internally matched to 50鈩? greatly simplifying the design and keeping
the number of external components to a minimum. Separate supply voltage
connections provide the required flexibility for dual-band operation. The TQ9222
achieves good RF performance with low current consumption, supporting long
standby times in portable applications. Coupled with the very small QSOP-24
package, the part is ideally suited for dual-band mobile phones.
Electrical Specifications
1
Parameter
Gain
Noise Figure
Input 3
rd
Order Intercept
DC supply Current
800 band
1900 band
800 band
1900 band
800 band
1900 band
800 band
1900 band
Typ
17.5
17.5
2.7
3.0
-9.0
-9.0
10.0
22.0
Units
MHz
MHz
dB
dB
dBm
dBm
mA
mA
Applications
摟
IS-136 dual-band Mobile Phones
摟
Tri-Mode Phones
摟
GSM dual-band Mobile Phones
摟
Wireless local loop
Note 1: Test Conditions: Vdd=2.8V, Ta=25C, filter IL=2.5dB, RF
1
=881MHz, RF
2
=1960MHz,
LO
1
=991MHz, LO
2
= 2070MHz, IF=110MHz, LO Input=-7dBm; unless otherwise specified
For additional information and latest specifications, see our website:
www.triquint.com
1

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