HMC305ALP4ETR - ANALOG DEVICES

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 1

General Description

Features

Functional Diagram

0.5 dB LSB Steps to 15.5 dB

CMOS Compatible Serial Data Interface

SPI Compatible Serial Output

±0.3 dB Typical Bit Error

24 Lead 4x4mm QFN Package: 16mm

Included in the HMC-DK004 Designer’s Kit

Electrical Specications, TA = +25° C, Vcc = +3V to +5V

Typical Applications

The HMC305ALP4(E) is a broadband 5-bit positive

control GaAs IC digital attenuator with CMOS com-

patible serial-to-parallel driver package in a leadless

QFN 4x4 mm SMT package. Covering 0.7 to 3.8 GHz,

the insertion loss is typically less than 1.5 to 2 dB.

The attenuator bit values are 0.5 (LSB), 1, 2, 4, and

8 dB for a total attenuation of 15.5 dB. Attenuation

accuracy is excellent at ±0.25 dB typical with an IIP3

of up to +52 dBm. Five bit serial control words are

used to select each attenuation state. A single

Vcc bias of +3V to +5V applied through an external

5 kOhm resistor is required.

The HMC305ALP4(E) is ideal for:

• Cellular/3G Infrastructure

• Fixed Wireless, WiMax & WiBro

• Test Instrumentation

Parameter Frequency Min. Typical Max. Units

Insertion Loss

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.8 GHz

1.2

1.5

1.8

2.0

1.5

2.0

2.3

2.5

Attenuation Range 0.7 - 3.8 GHz 15.5 dB

Return Loss (RF1 & RF2, All Atten. States)

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

2.7 - 3.8 GHz

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States

0.7 - 0.9 GHz

0.9 - 2.2 GHz

2.2 - 3.8 GHz

± (0.5 +5% of Atten. Setting) Max

± (0.3 +4% of Atten. Setting) Max

± (0.5 +5% of Atten. Setting) Max

Input Power for 0.1 dB Compression Vcc = 5V

Vcc = 3V 0.7 - 3.8 GHz 25

dBm

Input Third Order Intercept Point

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

Vcc = 5V

Vcc = 3V 0.7 - 3.8 GHz 52

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

tON, tOFF (Latch Enable to 10/90% RF) 0.7 - 3.8 GHz 750

830

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

HMC305ALP4 / 305ALP4E

v02.0311

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 2

Bit Error

vs. Attenuation State

Return Loss RF1, RF2

(Only Major States are Shown)

Insertion Loss

Normalized Attenuation

(Only Major States are Shown)

Note: All Data Typical Over Voltage (+3V to +5V) & Temperature (-40°C to +85°C).

Bit Error vs. Frequency

(Only Major States are Shown)

Relative Phase vs. Frequency

(Only Major States are Shown)

-4

-3.5

-3

-2.5

-2

-1.5

-1

-0.5

0.5 1 1.5 2 2.5 3 3.5 4

+25C

+85C

-40C

INSERTION LOSS (dB)

FREQUENCY (GHz)

-30

-25

-20

-15

-10

-5

0.5 1 1.5 2 2.5 3 3.5 4

RETURN LOSS (dB)

FREQUENCY (GHz)

I.L.

4 dB

8 dB2 dB 15.5 dB0.5 dB

1 dB

-16

-14

-12

-10

-8

-6

-4

-2

0.5 1 1.5 2 2.5 3 3.5 4

NORMALIZED ATTENUATION (dB)

FREQUENCY (GHz)

-0.5

-0.25

0.25

0.5

0.75

0 2 4 6 8 10 12 14 16

BIT ERROR (dB)

ATTENUATION STATE (dB)

2.4 GHz

0.9 GHz1.9 GHz

3.5 GHz

-1

0.5 1 1.5 2 2.5 3 3.5 4

BIT ERROR (dB)

FREQUENCY (GHz)

8 dB

15.5 dB

0.5, 1, 2, 4 dB

-60

-40

-20

0 0.5 1 1.5 2 2.5 3 3.5 4

RELATIVE PHASE (deg.)

FREQUENCY (GHz)

15.5 dB

0.5, 1, 2, 4, 8 dB

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 3

Truth Table

Serial Control Input Attenuation

Setting

RF1 - RF2

C 0.5 C 1 C 2 C 4 C 8

High High High High High Reference

I.L.

Low High High High High 0.5 dB

High Low High High High 1 dB

High High Low High High 2 dB

High High High Low High 4 dB

High High High High Low 8 dB

Low Low Low Low Low 15.5 dB

Max. Atten.

Any combination of the above states will provide an attenuation

approximately equal to the sum of the bits selected.

Worst Case Step Error

Between Successive Attenuation States

-1.2

-0.8

-0.4

0.4

0.8

1.2

0.5 1 1.5 2 2.5 3 3.5 4

STEP ERROR (dB)

FREQUENCY (GHz)

Digital Control Voltages

State Vcc = +5V Vcc = +3V

Low 0 to 1.3V 0 to 0.7V

High 3.5 to 5V 2.3 to 3V

Parameter Symbol Vcc = +5V Vcc = +3V Units

Min. Max. Min. Max.

Serial Input Setup

Time ts 20 - 100 - ns

Hold time from Serial

Input to Shift Clock th 0 - 5 - ns

Setup time from

Shift Clock to Latch

Enable

tlsup 40 - 100 - ns

Propagation delay,

Latch Enable to C0.5

through C8

tpd - 30 - 70 ns

Setup time from

Reset to Shift Clock - 20 - 50 - ns

Clock Frequency

(1/tclk) fclk - 30 - 10 MHz

Timing

Timing Diagram

Serial Input Truth Table

Latch

Enable

Shift

Clock Reset Function

X X L Shift register cleared

XáH Shift register clocked

áX H

Contents of shift register

transferred to Digital

Attenuator

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 4

Logic / Functional Diagram

Programming Example to Select 0.5 dB Attenuation State

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 5

Pin Number Function Description Interface Schematic

1, 3, 4, 6, 10, 12, 13,

15, 16, 18 N/C

These pins are not connected internally. However, all data

shown herein was measured with these pins connected

to RF/DC Ground.

2, 17 RF1, RF2

This pin is DC coupled and matched to 50 Ohms

Blocking capacitors are required. Select value based on

lowest frequency of operation.

5 Serial Output Serial data output. Serial input data

delayed by 8 clock cycles

7Reset

See truth table, control voltage table and timing diagram.

8 Shift Clock

9 Latch Enable

11 Serial Input

14 Vcc Supply Voltage.

19 - 24 GND Package bottom has an exposed metal paddle that

must also be connected to RF/DC Ground.

Pin Descriptions

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 6

Application Circuit

DC blocking capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 ~ 300 pF to allow lowest customer specic

frequency to pass with minimal loss. R1 = 5 kOhm is required to supply voltage to the circuit through either PIN 2 or PIN 17.

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 7

Absolute Maximum Ratings

Outline Drawing

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

Package Information

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.

Digital Inputs (Reset, Shift Clock,

Latch Enable & Serial Input) -0.5 to (Vcc + 0.5) V

Digital Outputs (Serial Output) -0.5 to (Vcc + 0.5) V

DC Current on Serial Output ±35 mA

Bias Voltage (Vcc) +5.6 V

Storage Temperature -65 to +150 °C

Operating Temperature -40 to +85 °C

RF Input Power (0.7 - 3.8 GHz) +26 dBm

ESD Sensitivity (HBM) Class 1A

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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

HMC305ALP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H305A

XXXX

HMC305ALP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H305A

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

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

For price, delivery and to place orders: Hittite Microwave Corporation, 20 Alpha Road, Chelmsford, MA 01824

Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com

Application Support: Phone: 978-250-3343 or apps@hittite.com

ATTENUATORS - DIGITAL - SMT

8 - 8

Evaluation Circuit Board

The circuit board used in the application should

use RF circuit design techniques. Signal lines

should have 50 Ohm impedance while the pack-

age ground leads and exposed ground paddle

should be connected directly to the ground plane

similar to that shown below. A sufficient number

of via holes should be used to connect the top and

bottom ground planes. The evaluation circuit board

as shown is available from Hittite Microwave Corpo-

ration upon request.

Item Description

J1 - J2 PCB Mount SMA Connector

J3 18 Pin DC Connector

J6, J7 DC Pin

C1, C2 100 pF Capacitor, 0402 Pkg.

C3 0.01 µF Capacitor, 0402 Pkg.

R1 5 kOhm Resistor, 0402 Pkg.

U1 HMC305ALP4(E) Digital Attenuator

PCB [2] 108780 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

List of Materials for Evaluation PCB 108782 [1]

HMC305ALP4 / 305ALP4E

v02.0311

0.5 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.8 GHz

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