SKY74068-11 Description
The SKY74068-11 transmitter is a highly integrated device for dual-band Code Division Multiple Access (CDMA) handsets in the cellular CDMA, Advanced Mobile Phone System (AMPS), and Personal munications System (PCS) modes. The device requires a minimum number of external ponents to plete a CDMA radio subsystem. Included on-chip are the baseband filter, direct upconversion In-Phase and Quadrature (I/Q) mixers,...
SKY74068-11 Key Features
- Low power consumption in all operating modes
- Direct upconversion architecture
- Device controlled using a three-wire read/write serial bus interface with independent supply voltage
- Baseband RC filter to reject receive band noise
- Fully integrated VCO with auto-tuning
- Dual-mode fractional-N/integer-N PLL
- Variable gain PA drivers
- Differential cellular driver output matched to 200 Ω
- Single-ended PCS driver output matched to 50 Ω
- Transmit power control with >85 dB dynamic range