Product Features Applications
•LGA: 5.5 mm x 5.3 mm x 0.85 mm Max
•Fully programmable MIPI RFFE control
•Fourteen low-insertion-loss TRx ports (five ultra-low loss) with enhanced linearity, for state-of-the-art 4G performance and GPS / WiFi compatibility
•High Efficiency (inclusive of coupler)
- GSM850/ GSM900 36%
- DCS1800/PCS1900 30%
• Tx harmonics below –40 dBm
• Current limiting and over-voltage protection for ruggedness and extended battery life
• Power control circuitry built-in for improved TRP variation
•Cellular handsets encompassing Quad-Band GSM/EDGE,Dual-Band TD-SCDMA, and TDD LTE
- Class 4 GSM850/900
- Class 1 DCS1800/PCS1900
- Class 12 GPRS multi-slot operation
- Linear EDGE operation
- TD-SCDMA Bands 34/39
- TDD LTE Band 34/39
•MIPI RFFE control with dual-standard support
- User-selectable register mappings
- Linear or VRAMP-based GMSK power
Functional Block Diagram
The HS8916-21 is a high-power, high-efficiency Front-End Module for GSM850/900, DCS1800, PCS1900 operation. The FEM supports Class.12 General Packet Radio Service (GPRS), EDGE multi-slot operation, and TD-SCDMA and TDD LTE linear transmission.
The module provides 50 ohm impedance at input and output ports, consists of a CMOS Controller, a SP16T RF switch, a power amplifier supporting GSM850/900, DCS1800/PCS1900, TD-SCDMA bands 34/39, andTDD LTE band 34/39. The module integrated Tx low pass harmonic filtering can achieve best harmonic performance.
The HS8916-21 provides high-power and high-efficiency Pout for GSM850/900, DCS1800, PCS1900 operation mode.
Selecting the linear-GMSK operation standard disables VRAMP input so all PA biasing depends only on MIPI mode selection. The transmitted envelope is a linear function of RF input.
Selecting VRAMP-enabled operation, the PA controller provides VRAMP control of the GMSK envelope and reduces sensitivity to input drive, temperature, power supply, and process variations. In EDGE and TD-SCDMA / TDD LTE linear modes, VRAMP voltage andMIPI-based bias settings optimize PA linearity and efficiency.