ADF4150(Rev0) Просмотр технического описания (PDF) - Analog Devices

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производитель

ADF4150
(Rev.:Rev0)

Fractional-N/Integer-N PLL Synthesizer

Analog Devices 

ADF4150

Pin No.

22

23

24

25

Mnemonic

SDVDD

SDGND

RSET

EP

Description

Power Supply Pin for the Digital Sigma-Delta (Σ-Δ) Modulator. This pin should be the same voltage as AVDD.

Decoupling capacitors to the ground plane are to be placed as close as possible to this pin.

Digital Σ-Δ Modulator Ground. Ground return path for the Σ-Δ modulator.

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

bias at the RSET pin is 0.48 V. The relationship between ICP and RSET is

ICP

=

23.9

RSET

where:

RSET = 5.1 kΩ.

ICP = 5 mA.

The exposed pad must be connected to GND.

Rev. 0 | Page 8 of 28

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