RF2948B RF Micro Devices, RF2948B Datasheet - Page 7

• Manufacturer Part Number: RF2948B
• Description: 2.4GHz SPREAD-SPECTRUM TRANSCEIVER
• Manufacturer: RF Micro Devices

Rev A6 040930
Base
Pkg
Pin
31
32
Function
RX VGC
VREF 1
ESD
Description
This is a bypass pin for the bias circuits of the GmC filter amps and for
I/Q inputs. No current should be drawn from this pin (<10µA). 1.7V
nominal.
Receiver IF and baseband amp gain control voltage. Negative slope.
Ground for all circuitry in the device. A very low inductance from the
base to the PCB groundplane is essential for good performance. Use
an array of vias immediately underneath the device.
This diode structure is used to provide electrostatic discharge protec-
tion to 3kV using the Human body model. The following pins are pro-
tected: 1-4, 7, 8, 10, 19-32.
Interface Schematic
RF2948B
V
CC
11-245