HMC271ALP4E - ANALOG DEVICES - Datasheet.Directory

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

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

General Description

Features

Functional Diagram

1 dB LSB Steps to 31 dB

CMOS Compatible Serial Data Interface

SPI Compatible Serial Output

±0.4 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 HMC271ALP4(E) is a broadband 5-bit positive

control GaAs IC digital attenuator with CMOS com-

patible serial-to-parallel drivers in a low cost lead-

less QFN 4x4 mm SMT package. Covering 0.7 to

3.7 GHz, the insertion loss is typically less than 2.5

dB. The attenuator bit values are 1 (LSB), 2, 4, 8,

and 16 dB for a total attenuation of 31 dB. Accuracy

is excellent at ± 0.4 dB typical with an IIP3 of up to

+48 dBm. Five bit CMOS compatible 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 HMC271ALP4(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 - 3.7 GHz

1.9

2.3

2.6

2.8

2.4

2.8

3.1

3.3

Attenuation Range 0.7 - 3.7 GHz 31 dB

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

0.7 - 1.4 GHz

1.4 - 2.7 GHz

2.7 - 3.7 GHz

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States 0.7 - 0.9 GHz

0.9 - 2.2 GHz

2.2 - 3.7 GHz

± (0.4 + 5% of Atten. Setting) Max

± (0.4 + 4% of Atten. Setting) Max

± (0.4 + 6% of Atten. Setting) Max

Input Power for 0.1 dB Compression Vcc = 5V

Vcc = 3V 0.7 - 3.7 GHz 24

dBm

Input Third Order Intercept Point

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

Vcc = 5V

Vcc = 3V 0.7 - 3.7 GHz 48

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

tON, tOFF (Latch Enable to 10/90% RF) 0.7 - 3.7 GHz 750

830

HMC271ALP4 / 271ALP4E

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)

1 dB

16 dB 31 dB

2 dB

8 dB4 dB

I.L.

-35

-30

-25

-20

-15

-10

-5

0.5 1 1.5 2 2.5 3 3.5 4

NORMALIZED ATTENUATION (dB)

FREQUENCY (GHz)

-1

-0.5

0.5

1.5

0 4 8 12 16 20 24 28 32

BIT ERROR (dB)

ATTENUATION STATE (dB)

2.4 GHz

0.9 GHz 1.9 GHz

3.5 GHz

-1

0.5 1 1.5 2 2.5 3 3.5 4

BIT ERROR (dB)

FREQUENCY (GHz)

16 dB

31 dB

1, 2, 4 dB8 dB

-100

-75

-50

-25

100

0 0.5 1 1.5 2 2.5 3 3.5 4

RELATIVE PHASE (deg.)

FREQUENCY (GHz)

31 dB 16 dB

1, 2, 4, 8 dB

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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

Digital Control Voltages

Truth Table

Serial Data Input Attenuation

Setting

RF1 - RF2

C1 C2 C4 C8 C16

High High High High High Reference

I.L.

Low High High High High 1 dB

High Low High High High 2 dB

High High Low High High 4 dB

High High High Low High 8 dB

High High High High Low 16 dB

Low Low Low Low Low 31 dB

Max. Atten.

Any combination of the above states will provide an attenuation

approximately equal to the sum of the bits selected.

State Vcc = +5V Vcc = +3V

Low 0 to 1.3V 0 to 0.7V

High 3.5 to 5V 2.3 to 3V

-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)

Worst Case Step Error

Between Successive Attenuation States

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

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 C1

through C16

tpd - 30 - 70 ns

Setup time from

Reset to Shift Clock - 20 - 50 - ns

Clock Frequency

(1/tclk) fclk - 30 - 10 MHz

Timing

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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 1 dB Attenuation State

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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.

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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 - 3.7 GHz) +26 dBm

ESD Sensitivity (HBM) Class 1A

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 GHz

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

HMC271ALP4 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] H271A

XXXX

HMC271ALP4E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] H271A

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 sho-

uld have 50 Ohm impedance while the package

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 Corpora-

tion 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 HMC271ALP4(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]

HMC271ALP4 / 271ALP4E

v02.0311

1 dB LSB GaAs MMIC 5-BIT SERIAL

CONTROL DIGITAL ATTENUATOR, 0.7 - 3.7 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