TQ9222 Datasheet, PDF (1/16 Pages) TriQuint Semiconductor – Dual-Band TDMA LNA/Downconverter IC

WIRELESS COMMUNICATIONS DIVISION
LNA OUT
1900
Vdd
MXR 1900
MXR LO
1900
Vdd LNA
1900
LNA IN
1900
Vdd LNA
800
LNA IN
800
MXR RF
1900
MXR IF
1900
MXR IF
800
TQ9222
DATA SHEET
Dual-Band TDMA
LNA/Downconverter IC
LNA OUT Vdd MXR LO
800 MXR 800 800
Product Description
MXR RF
800
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 ½-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 50Ω, 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.
Features
§Pin compatible with TQ5121
§Single 3 V operation
§Low-current operation
§Low-frequency IF capability
§Excellent ½ IF rejection
§IF output combining
§50 Ω matched inputs (most ports)
§QSOP-24 plastic package
Applications
Electrical Specifications¹
Parameter
Gain
Typ
Units
800 band
17.5
MHz
1900 band
17.5
MHz
§IS-136 dual-band Mobile Phones
§Tri-Mode Phones
§GSM dual-band Mobile Phones
§Wireless local loop
Noise Figure
800 band
2.7
dB
1900 band
3.0
dB
Input 3^rd Order Intercept
800 band
-9.0
dBm
1900 band
-9.0
dBm
DC supply Current
800 band
10.0
mA
1900 band
22.0
mA
Note 1: Test Conditions: Vdd=2.8V, Ta=25C, filter IL=2.5dB, RF¹=881MHz, RF ²=1960MHz,
LO¹=991MHz, LO²= 2070MHz, IF=110MHz, LO Input=-7dBm; unless otherwise specified
For additional information and latest specifications, see our website: www.triquint.com
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