I've got a task of cramming in a GPS receiver with I2C interface to an existing small board. The receiver is rather power hungry (50uA) even in sleep mode compared to the target of 3uA at 2.8V.
I was planning on isolating the GPS receiver from the system with a P-fet in the power line and analog dual switch on the I2C lines. These being controlled PCA9570 or similar I2C GPIO extender.
All these should be crammed to 10x15mm PCB space with low cost.
Any other ideas or recommendations for the components ?