HMC540LP3ETR - ANALOG DEVICES

ATTENUATORS - SMT

5 - 170

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

Functional Diagram

Electrical Speci cations,

TA = +25° C, With Vdd = +5V & Vctl = 0/+5V (Unless Otherwise Noted)

The HMC540LP3 / HMC540LP3E is ideal for both RF

and IF applications:

• Cellular Infrastructure

• ISM, MMDS, WLAN, WiMAX, WiBro

• Microwave Radio & VSAT

• Test Equipment and Sensors

1 dB LSB Steps to 15 dB

± 0.2 dB Typical Step Error

Low Insertion Loss: 1 dB

High IP3: +50 dBm

Single Control Line Per Bit

TTL/CMOS Compatible Control

Single +5V Supply

3x3 mm SMT Package

The HMC540LP3 & HMC540LP3E are broadband

4-bit GaAs IC digital attenuators in low cost leadless

surface mount packages. This single positive control

line per bit digital attenuator utilizes off chip AC

ground capacitors for near DC operation, making it

suitable for a wide variety of RF and IF applications.

Covering DC to 5.5 GHz, the insertion loss is less

than 1 dB typical. The attenuator bit values are

1 (LSB), 2, 4 and 8 dB for a total attenuation of 15 dB.

Attenuation accuracy is excellent at ± 0.2 dB typical

step error. The attenuator also features a IIP3 of +50

dBm. Four TTL/CMOS control inputs are used to

select each attenuation state. A single Vdd bias of

+5V is required.

Parameter Frequency (GHz) Min. Typ. Max. Units

Insertion Loss

DC - 2.0 GHz

2.0 - 3.0 GHz

3.0 - 4.0 GHz

4.0 -5.5 GHz

0.8

1.0

1.3

2.2

1.1

1.3

1.6

2.6

Attenuation Range DC - 5.5 GHz 15 dB

Return Loss (RF1 & RF2, All Atten. States) DC - 3.5 GHz

3.5 - 5.5 GHz

Attenuation Accuracy:

(Referenced to Insertion Loss) All States

DC - 1.0 GHz

1.0 - 4.0 GHz

4.0 - 5.0 GHz

5.0 - 5.5 GHz

± (0.2 + 2% of Atten. Setting) Max.

± (0.2 + 3% of Atten. Setting) Max.

± (0.3 + 5% of Atten. Setting) Max.

± (0.4 + 8% of Atten. Setting) Max.

Input Power for 0.1 dB Compression 0.1 - 5.5 GHz 27 dBm

Input Third Order Intercept Point

(Two-Tone Input Power= 0 dBm Each Tone)

REF - 4 dB States

5 - 15 dB States 0.1 - 5.5 GHz 50

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

tON, tOFF (50% CTL to 10/90% RF)

DC -5.5 GHz

100

Typical Applications Features

General Discription

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

ATTENUATORS - SMT

5 - 171

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

Return Loss RF1, RF2

(Only Major States are Shown)

Insertion Loss

Normalized Attenuation

(Only Major States are Shown)

Bit Error vs. Frequency

(Only Major States are Shown)

Relative Phase vs. Frequency

(Only Major States are Shown)

Bit Error vs. Attenuation State

-3

-2.5

-2

-1.5

-1

-0.5

0123456

+25 C

+85 C

-40 C

INSERTION LOSS (dB)

FREQUENCY (GHz)

-1

-0.5

0.5

1.5

0 4 8 12 16

BIT ERROR (dB)

ATTENUATION STATE (dB)

5 GHz5.5 GHz

1 GHz 100 MHz

4 GHz

-20

-16

-12

-8

-4

0123456

NORMALIZED ATTENUATION (dB)

FREQUENCY (GHz)

-1

-0.5

0.5

1.5

0123456

BIT ERROR (dB)

FREQUENCY (GHz)

8 dB15 dB

1-4 dB

-40

-30

-20

-10

0123456

RELATIVE PHASE (deg)

FREQUENCY (GHz)

15 dB

8 dB

1-4 dB

-40

-30

-20

-10

0123456

RETURN LOSS (dB)

FREQUENCY (GHz)

1 dB 2 dB 4 dBI.L.dB 8 dB 15 dB

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

ATTENUATORS - SMT

5 - 172

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

Truth Table

Control Voltage

Bias Voltage & Current

Worst Case Step Error

Between Successive Attenuation States

Vdd = +5.0 Vdc ± 10%

Vdd

(VDC)

Idd (Typ.)

(mA)

+4.5 3.0

+5.0 3.2

+5.5 3.4

State Bias Condition

Low 0 to +0.8V @ -5 uA Typ.

High +2.0 to + 5.0 Vdc @ 40 uA Typ.

Note: Vdd = +5V

Control Voltage Input Attenuation

State

RF1 - RF2

8 dB

4 dB

2 dB

1 dB

High High High High Reference

I.L.

High High High Low 1 dB

High High Low High 2 dB

High Low High High 4 dB

Low High High High 8 dB

Low Low Low Low 15 dB

Any combination of the above states will provide an attenuation

approximately equal to the sum of the bits selected.

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0123456

STEP ERROR (dB)

FREQUENCY (GHz)

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

ATTENUATORS - SMT

5 - 173

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

Absolute Maximum Ratings

Outline Drawing

RF Input Power (DC - 5.5 GHz) +29 dBm (T = +85 °C)

Control Voltage Range (V1 to V4) -1V to Vdd +1V

Bias Voltage (Vdd) +7.0 Vdc

Channel Temperature 150 °C

Continuous Pdiss (T = 85 °C)

(derate 11.7 mW/°C above 85 °C) 0.769 W

Thermal Resistance 85 °C/W

Storage Temperature -65 to +150 °C

Operating Temperature -40 to +85 °C

NOTES:

1. LEADFRAME MATERIAL: COPPER ALLOY

2. DIMENSIONS ARE IN INCHES [MILLIMETERS]

3. LEAD SPACING TOLERANCE IS NON-CUMULATIVE

4. PAD BURR LENGTH SHALL BE 0.15mm MAXIMUM.

PAD BURR HEIGHT SHALL BE 0.05mm MAXIMUM.

5. PACKAGE WARP SHALL NOT EXCEED 0.05mm.

6. ALL GROUND LEADS AND GROUND PADDLE MUST BE

SOLDERED TO PCB RF GROUND.

7. REFER TO HITTITE APPLICATION NOTE FOR SUGGESTED

LAND PATTERN.

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

Part Number Package Body Material Lead Finish MSL Rating Package Marking [3]

HMC540LP3 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] 540

XXXX

HMC540LP3E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] 540

XXXX

[1] Max peak re ow temperature of 235 °C

[2] Max peak re ow temperature of 260 °C

[3] 4-Digit lot number XXXX

Package Information

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

ATTENUATORS - SMT

5 - 174

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

Pin Descriptions

Pin Number Function Description Interface Schematic

1Vdd Supply Voltage.

2, 11 RF1, RF2

This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required.

Select value based on lowest frequency of operation.

3, 7, 9, 10, 12 N/C These pins should be connected to PCB RF ground to

maximize performance.

4 - 6, 8 ACG1 - ACG4

External capacitor to ground is required. Select value for

lowest frequency of operation. Place capacitor as close

to pins as possible.

13 - 16 V1 - V4 See truth table and control voltage table.

GND Package bottom has an exposed metal paddle that must be

connected to RF/DC Ground.

Application Circuit

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

Recommended Component Values

C1 - C3 1,000 pF ± 10%

C4, C5 330 pF ± 10%

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D

ATTENUATORS - SMT

5 - 175

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:

20 Alpha Road, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373

Order On-line at www.hittite.com

Evaluation PCB

The circuit board used in the  nal application should

use RF circuit design techniques. Signal lines

should have 50 ohm impedance while the package

ground leads and exposed paddle should be con-

nected directly to the ground plane similar to that

shown. A sufficient number of via holes should be

used to connect the top and bottom ground planes.

The evaluation circuit board shown is available from

Hittite upon request.

List of Materials for Evaluation PCB 111315 [1]

Item Description

J1 - J2 PCB Mount SMA Connector

J3 - J8 DC Pin

C1 - C3 1000 pF Capacitor, 0402 Pkg.

C4, C5 330 pF Capacitor, 0402 Pkg.

U1 HMC540LP3 / HMC540LP3E

Digital Attenuator

PCB [2] 111291 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

HMC540LP3 / 540LP3E

1 dB LSB GaAs MMIC 4-BIT DIGITAL

POSITIVE CONTROL ATTENUATOR, DC - 5.5 GHz

v00.0605

OBSOLETE

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rights of third parties that may result from its use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks and registered trademarks are the property of their respective owners.

For price, delivery, and to place orders: Analog Devices, Inc.,

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106

Phone: 781-329-4700 • Order online at www.analog.com

Application Support: Phone: 1-800-ANALOG-D