ADF4193

Rev. B | Page 7 of 28

Pin No.

Mnemonic

Description

23

Connecting a resistor between this pin and GND sets the charge pump output current. The nominal voltage bias at

24

capacitor to ground should be placed as close as possible to this pin.

25

AIN−

Differential Amplifier’s Negative Input Pin.

26

Differential Charge Pump’s Negative Output Pin. Should be connected to AIN− and the loop filter.

27

SW2

28

Common for SW1 and SW2 Switches. Should be connected to the ground plane.

29

SW1

30

Differential Charge Pump’s Positive Output Pin. Should be connected to AIN+ and the loop filter.

31

AIN+

Differential Amplifier’s Positive Input Pin.

32

Power Supply Pin for the Differential Amplifier. This can range from 5.0 V to 5.5 V. A 0.1 μF decoupling capacitor to

ground should be placed as close as possible to this pin. Also requires a 10 μF decoupling capacitor to ground.