TQ9203

WIRELESS COMMUNICATIONS DIVISION VDD TQ9203 Mixer IF out Mixer RF In Mixer LO In DATA SHEET LNA IN0 Select LNA IN1 Low-Current Cellular Band Downconverter IC LNA out GND LO Tune Features §+5-V single supply §Internal buffer amplifier on mixer LO port 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, spacelimited 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 Parameter Frequency Gain Noise Figure Input 3rd Order Intercept DC supply Current Note §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 Min 800 Typ 21.0 2.5 -10.0 10.5 Max 1000 Units MHz dB dB dBm mA Applications §Cellular Communications §Spread-Spectrum Receivers §Cordless Phones 1. Test Conditions: Vdd=5V, Ta=25C, filte...