TQ3631 Datasheet | TriQuint Semiconductor

Features Small size: SOT23-8 Single 3V operation Low-current operation Product Description The TQ3631 is a 3V, RF LNA IC designed specifically for PCS band CDMA applications. It’s RF performance meets the requirements of products designed to the IS-95 specifications. The TQ3631 is designed to be used with the TQ5631 (CDMA mixer) which provides a plete CDMA receiver for 1900MHz phones. The LNA incorporates on-chip switches which determine high, low and bypass mode select. When used with the TQ5631 (CDMA RFA/mixer), four gain steps are available for use which provide low current/high IP3 and gain. The RF output port is internally matched to 50 Ω, greatly simplifying the design and minimizing the number of external ponents. The TQ3631 achieves excellent RF performance with low current consumption, supporting long standby and talk times in portable applications. Coupled with the very small SOT23-8 package, the part is ideally suited for PCS band mobile phones. Electrical Specifications1 Parameter Frequency Gain Noise Figure Input 3rd Order Intercept DC supply Current Min Typ 1960 13.0 1.5 10.0 11.0 Max Units MHz d B d B d Bm m A Gain Select High IP3 performance Few external ponents Applications IS-95 CDMA PCS Mobile Phones Note 1: Test Conditions: Vdd=2.8V, RF=1960MHz, Tc=25C, CDMA High Gain state. For additional information and latest specifications, see our website: .triquint. TQ3631 Data Sheet Electrical Characteristics Parameter RF Frequency Conditions PCS band Min. 1810 Typ/Nom 1960 Max. 1990 Units MHz CDMA Mode-High Gain Gain Noise Figure Input IP3 Input Return Loss (with external matching) Output Return Loss Supply Current 7.0 10 10 11.0 13.0 12.0 13.0 1.5 10.0 2.2 d B d B d Bm d B d B m A CDMA Mode-High Gain-Low Linearity Gain Noise Figure Input IP3 Input Return Loss (with external matching) Output Return Loss Supply Current 2.0 10 10 4.5 5.5 10.0 11.5 1.6 5.0 2.8 d B d B d Bm d B d B m A Bypass Mode Gain Noise Figure Input IP3 Input Return Loss (with external...