TQ5121

WIRELESS COMMUNICATIONS DIVISION TQ5121 N/C N/C Vdd MXR 1 2 3 16 15 14 13 12 11 10 9 Optional GND N/C Mixer IF/ Vdd GND MXR RF GND LNA Out N/C DATA SHEET MXR LO 4 VDD LNA GND RF IN GND 5 6 7 8 3V Cellular TDMA/AMPS LNA/mixer Receiver IC Features §Pin compatible with TQ9222 (dual-band TDMA receiver) §Single 3V operation §Low-current operation §50 Ω matched inputs §QSOP-16 plastic package Product Description The TQ5121 is a 3V, RF receiver IC designed specifically for Cellular band TDMA applications. It’ s RF performance meets the requirements of products designed to the IS-136 and AMPS standards. The TQ5121 is pin compatible with TQ9222, which enables handset designers to use strategic board platform strategy. The TQ5121 contains LNA+Mixer circuits to handle the 800MHz cellular band. The mixer uses a high-side LO frequency, with the IF covering a range of 70 to 140MHz. Most RF ports are internally matched to 50 Ω , greatly simplifying the design and keeping the number of external components to a minimum. The TQ5121 achieves good RF performance with low current consumption, supporting long standby times in portable applications. Coupled with the very small QSOP-16 package, the part is ideally suited for Cellular band mobile phones. Electrical Specifications1 Parameter Frequency Gain Noise Figure Input 3rd Order Intercept DC supply Current Min 869 17.5 2.7 -8.5 10.0 Typ Max 894 Units MHz dB dB dBm mA Applications §IS-136 Mobile Phones §AMPS Mobile Phones §ISM 900MHz Note...