6

30 A Low-Side RF MOSFET Driver

IXRFD631

Fig. 22 Timing Diagram

Fig. 21 Test Circuit Diagram

Symbol

Function

Description

Vcc

Supply Voltage

Positive power supply voltage input. These leads provide power to

the entire device.

IN

Input

Input signal-TTL or CMOS compatible.

OUT

Output

Driver Output. For application purposes, this lead is connected

directly to the Gate of a MOSFET

GND

Power Ground

System ground leads. Internally connected to all circuitry, these

leads provide ground reference for the entire device and

should be connected to a low noise analog ground plane for

optimum performance.

IN GND

Input Ground

Input Kelvin ground connection

Fig. 20 Pin Description

Note: If required, a common mode choke can be added to further stabilize the input. Usually a few nano-henries on a small core will

be sufficient to eliminate threshold variations due to ground bounce.