CX77304-16 Datasheet | Skyworks Solutions

DATA SHEET CX77304-16 PA Module for Tri-Band EGSM DCS PCS / GPRS Applications - Tri-band cellular handsets enpassing - Class 4 EGSM900 - Class 1 DCS1800 - PCS1900, and - Up to Class 10 GPRS multislot operation Description The CX77304-16 Power Amplifier Module (PAM) is designed in a pact form factor for tri-band cellular handsets prising EGSM900, DCS1800, and PCS1900 operation. It also supports Class 10 General Packet Radio Service (GPRS) multislot operation. The PAM consists of separate Heterojunction Bipolar Transistor (HBT) PA blocks for EGSM900 and DCS1800/PCS1900 PA bands, interface circuitry, and RF input and output ports internally matched to 50 W to reduce the number of external ponents. The PA blocks are fabricated on a single Gallium Arsenide (Ga As) die. Optimized for lithium ion battery operation, both PA blocks share mon power supply pins to distribute current. Extremely low leakage current (2 µA, typical) of the dual PAM maximizes handset standby time. The CX77304-16 also contains band-select switching circuitry to select EGSM (logic 0) and DCS/PCS (logic 1) as determined from the Band Select (BS) signal. In the block diagram shown below, the BS pin selects the PA output (DCS/PCS OUT or EGSM OUT) while the Analog Power Control (APC) controls the level of output power. A custom CMOS integrated circuit provides the internal interface circuitry including a current amplifier that minimizes the required power control current (IAPC) to 10 µA, typical. The Ga As die, the Silicon (Si) die, and passive ponents are mounted on a multi-layer laminate substrate and the assembly encapsulated with plastic overmold. Features - High efficiency - EGSM 55% - DCS 50% - PCS 45% - Input/output internally matched to 50 Ω - Small outline - 9.1 mm × 11.6 mm - Low profile - 1.5 mm - Low APC current - 10 µA typical - Gold plated, lead-free contacts Figure 1. Functional Block Diagram Skyworks Solutions, Inc. - Phone [781] 376-3000 - Fax [781] 376-3100 -...