ADF4196 datasheet(7/28 Pages) AD

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Data Sheet

ADF4196

Pin No.

Mnemonic

Description

SET

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

the R

SET pin is 0.55 V. The relationship between ICP and RSET is

SET

Therefore, with R

SET = 2.4 kΩ, ICP = 104 µA.

Power Supply Pin for the Charge Pump. Nominally 5 V, V

P2 should be at the same voltage as VP1. Place a 0.1 µF

decoupling capacitor to the ground plane as close as possible to this pin.

AIN−

Negative Input Pin for the Differential Amplifier.

OUT−

Differential Charge Pump Negative Output Pin. Connect this pin to AIN− and the loop filter.

SW2

Fast Lock Switch 2. This switch is closed to SW

GND when the SW1/SW2 timeout counter is active.

GND

Ground for SW1 and SW2 Switches. Connect this pin to the ground plane.

SW1

Fast Lock Switch 1. This switch is closed to SW

GND when the SW1/SW2 timeout counter is active.

OUT+

Differential Charge Pump Positive Output Pin. Connect this pin to AIN+ and the loop filter.

AIN+

Positive Input Pin for the Differential Amplifier.

Power Supply Pin for the Differential Amplifier. Ranges from 5.0 V to 5.5 V. Place a 0.1 µF decoupling capacitor to

the ground plane as close as possible to this pin. V

P3 also requires a 10 µF decoupling capacitor to the ground plane.

Exposed Paddle. The exposed paddle must be connected to the ground plane.

Rev. D | Page 7 of 28

ADF4196 Datasheet(PDF) 7 Page - Analog Devices