TQ3131 Datasheet | TriQuint Semiconductor

Features Small size: SOT23-8 Single 3V operation Low-current operation Product Description The TQ3131 is a 3V, RF LNA IC designed specifically for Cellular band CDMA/AMPS applications. It’s RF performance meets the requirements of products designed to the IS-95 and AMPS standards. The TQ3131 is designed to be used with the TQ5131 (CDMA/AMPS mixer) which provides a plete CDMA receiver for 800MHz dual-mode phones. The LNA incorporates on-chip switches which determine CDMA, AMPS, and bypass mode select. When used with the TQ5131 (CDMA RFA/mixer), four gain states are available. The RF output port is internally matched to 50 Ω, greatly simplifying the design and keeping the number of external ponents to a minimum. The TQ3131 achieves good RF performance with low current consumption, supporting long standby times in portable applications. Coupled with the very small SOT23-8 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 832 13.0 1.4 10.0 10.5 Typ Max 894 Units MHz d B d B d Bm m A Gain Select Mode Select High IP3 performance Few external ponents Applications IS-95 CDMA Mobile Phones AMPS Mobile Phones Dual Mode CDMA Cellular applications 832-870MHz CDMA applications Note 1: Test Conditions: Vdd=2.8V, Tc=25C, RF frequency=881MHz, CDMA High Gain state. For additional information and latest specifications, see our website: .triquint. TQ3131 Data Sheet Electrical Characteristics Parameter RF Frequency Conditions Min. 832 Typ/Nom 881 Max. 894 Units MHz CDMA Mode-High Gain Gain Noise Figure Input IP3 LNA IN Return Loss (with external matching) LNA OUT Return Loss Supply Current 8.0 10 10 10.5 13.5 11.5 13.0 1.4 10.0 2.0 d B d B d Bm d B d B m A Bypass Mode Gain Noise Figure Input IP3 LNA IN Return Loss (with external matching) LNA OUT Return Loss Supply Current 18.0 10 10 1.2 2.5 -3.0 -2.0 2.0 30.0 3.0 d B d B d Bm d B d B m A AMPS Mode Gain Noise...