SKY77604 Overview
Skyworks SKY77604 is a hybrid multi-mode, multi-band Power Amplifier Module (PAM) that supports 2.5G and 3G handsets, and operates efficiently in GSM, EGPRS, EDGE WCDMA modes. The PAM consists of a GSM800/EGSM900 PA block, a DCS1800/PCS1900 PA block, separate WCDMA blocks for low and high bands, RF input / output ports internally matched to 50 Ω to reduce the number of external ponents, and a MultiFunction Control...
SKY77604 Key Features
- Hybrid architecture: separate GSM and WCDMA paths
- Separate single-ended GSM and WCDMA outputs, bined single-ended GSM and WCDMA inputs, all AC-coupled
- Multiplexed voltage detector for GMSK, EDGE modes; coupler output for 3G bands provided to transceiver for power control
- Fully programmable serial bus interface
- Final VCC stage for 2.5G/3G can attach to battery or buck DC/DC
- Driver stage for 3G can attach to battery or buck DC/DC
- 2.5G features
- EGPRS Class 12 multi-slot operation
- Linear power detector
- Linear PA with bias optimization for efficiency/linearity tradeoff in 8-PSK mode