SA1638 Description
The SA1638 is a bined Rx and Tx IF I/Q circuit. The receive path contains an IF amplifier, a pair of quadrature down-mixers, and a pair of baseband filters and amplifiers. A second pair of mixers in the transmit path transposes a quadrature baseband input up to the IF frequency.
SA1638 Key Features
- Fully patible with SA1620 GSM RF front-end (see Figure 9)
SA1638 Applications
- Direct supply: 3.3V to 7.5V