ADF4156BRUZ-RL Analog Devices Inc, ADF4156BRUZ-RL Datasheet

ADF4156BRUZ-RL

Manufacturer Part Number

ADF4156BRUZ-RL

Description

IC,FREQUENCY SYNTHESIZER,CMOS,TSSOP,16PIN,PLASTIC

Manufacturer

Analog Devices Inc

Type

Fractional N Synthesizer (RF)r

Datasheet

1.ADF4156BCPZ.pdf (24 pages)

Specifications of ADF4156BRUZ-RL

Design Resources

Low-Noise Microwave fractional-N PLL using active loop filter and RF prescaler (CN0174)

Pll

Yes

Input

CMOS

Output

Clock

Number Of Circuits

Ratio - Input:output

2:1

Differential - Input:output

Yes/No

Frequency - Max

6GHz

Divider/multiplier

Yes/Yes

Voltage - Supply

2.7 V ~ 3.3 V

Operating Temperature

-40°C ~ 85°C

Mounting Type

Surface Mount

Package / Case

16-TSSOP

Frequency-max

6GHz

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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PCN

PCN #: 08_0105

Title:

ADF4156 Redesign : Improve Phase Noise performance when using reference doubler and reduce power down current.

Date Published:

October 22, 2008

Type:

Device

Part Number:

ADF4156

Proposed Change:

1) Tie unused PFD/CP blocks power supplies to GND to reduce power down current from 4mA to <10uA.

2) Invert reference clock path from the output of reference doubler to reduce phase noise when Reference Doubler is enabled resulting

in 10-12dBc/Hz In Band phase noise improvement.

These changes will have no effect on the part in normal operation if the doubler is not being used.

This change will have no effect on the form, fit, function, quality or reliability of the device other that doubler operation as outlined

above.

Samples of the changed product are available now.

Reason for Change:

1) To reduce power-down current to <10uA

2) To allow reference doubler operation without phase noise degradation (Current silicon exhibits a 6dBc/Hz phase noise degradation

when doubler is enabled).

This change is only relevant where the reference double operation is used.

Summary of Supporting Information:

Edits were verified in bench characterization.

Planned Date Change Effective:

October 22, 2008

EIA Date Code:

0850

Contact:

Peadar Forbes

Application Engineer

Phone: 353 61 495745

Fax: 353 61 304094

Email: peadar.forbes@analog.com

Analog Devices, Inc.

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ADF4156BRUZ-RL Summary of contents

Page 1

PCN #: 08_0105 Title: ADF4156 Redesign : Improve Phase Noise performance when using reference doubler and reduce power down current. Date Published: October 22, 2008 Type: Device Part Number: ADF4156 Proposed Change: 1) Tie unused PFD/CP blocks power supplies ...

Page 2

ADI Confidential -- ...

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