SA9504 Description
The SA9504 is an integrated receiver front-end for 900 MHz Cellular (AMPS) and 1.9 GHz PCS (CDMA) phones. This dual-band receiver circuit has low noise amplifiers and downconverters for both bands, and provides an elegant solution for RF-to-IF conversion. The two cascode LNAs have been designed to provide high gain with very low noise figures and high linearity.
SA9504 Key Features
- Separate, selectable IF outputs to suit FM and CDMA bandwidths
- Buffered Cellular and PCS LO inputs
- Integrated frequency doubler for PCS mixer LO
- Differential (Tx) LO output buffer (can be switched on or off)
- Low voltage operation down to 2.7 volts
- Mixers current consumption with (Tx) LO buffer on
- Cellular FM: 17.4 mA
- PCS: 27.6 mA
- Low standby current in sleep mode: <50 µA
- Small LQFP32 package
SA9504 Applications
- LNAs for both Cellular (AMPS) and PCS (CDMA) bands