HMC274QS16E - Analog Devices

ATTENUATORS - SMT

5 - 28

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

HMC274QS16 / 274QS16E

1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

v01.0505

General Description

Features

Functional Diagram

1 dB LSB Steps to 31 dB

Single Positive Control (+3 to +5V) Per Bit

±0.5 dB Typical Bit Error

Small QSOP16 Plastic Package

Included in the HMC-DK004 Designer’s Kit

Typical Applications

The HMC274QS16 / HMC274QS16E is ideal for:

• Cellular/PCS/3G Infrastructure

• 2.4 GHz ISM Radios

• Wireless Data

The HMC274QS16 & HMC274QS16E are broadband

5-bit positive control GaAs IC digital attenuators in

16 lead QSOP plastic packages. Covering 0.7 to 2.7

GHz the insertion loss is typically less than 2.3 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 ± 0.5 dB typical with an IIP3 of up to

+50 dBm. Five bit control voltage inputs, toggled

between 0 and +3 to +5 volts, are used to select

each attenuation state. A single Vdd bias of +3 to +5

volts applied through an external 5K Ohm resistor is

required.

Electrical Speci cations, TA = +25° C, Vdd = +3V to +5V & Vctl = 0/Vdd

Parameter Frequency Min. Typical Max. Units

Insertion Loss

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

2.0

2.3

2.5

2.4

2.7

3.1

Attenuation Range 0.7 - 2.7 GHz 31 dB

Return Loss (RF1 & RF2, All Atten. States) 0.7 - 1.4 GHz

1.4 - 2.7 GHz

Attenuation Accuracy: (Referenced to Insertion Loss)

All Attenuation States

0.7 - 1.4 GHz

1.4 - 2.3 GHz

2.3 - 2.7 GHz

± 0.35 + 5% of Atten. Setting Max

± 0.25 + 3% of Atten. Setting Max

± 0.30 + 5% of Atten. Setting Max

Input Power for 0.1 dB Compression Vdd = 5V

Vdd = 3V 0.7 - 2.7 GHz 29

dBm

Input Third Order Intercept Point

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

Vdd = 5V

Vdd = 3V 0.7 - 2.7 GHz 54

dBm

Switching Characteristics

tRISE, tFALL (10/90% RF)

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

0.7 - 2.7 GHz 560

600

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

OBSOLETE

ATTENUATORS - SMT

5 - 29

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

HMC274QS16 / 274QS16E

Return Loss RF1, RF2

(Only Major States are Shown)

Insertion Loss

Normalized Attenuation

(Only Major States are Shown)

v01.0505 1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

Note: All Data Typical Over Voltage (+3V to +5V).

Bit Error vs. Attenuation State

Bit Error vs. Frequency

(Only Major States are Shown)

Relative Phase vs. Frequency

(Only Major States are Shown)

-5

-4

-3

-2

-1

0.5 1 1.5 2 2.5 3

+25 C

+85 C

-40 C

INSERTION LOSS (dB)

FREQUENCY (GHz)

-1.5

-1

-0.5

0.5

1.5

0 4 8 12 16 20 24 28 32

0.9 GHz

1.9 GHz

2.4 GHz

BIT ERROR (dB)

ATTENUATION STATE (dB)

-35

-30

-25

-20

-15

-10

-5

0.5 1 1.5 2 2.5 3

NORMALIZED ATTENUATION (dB)

FREQUENCY (GHz)

-100

-50

100

150

0.5 1 1.5 2 2.5 3

1 dB

2 dB

4 dB

8 dB

16 dB

31 dB

RELATIVE PHASE (deg)

FREQUENCY (GHz)

-2

-1

0.5 1 1.5 2 2.5 3

1 dB

2 dB

4 dB

8 dB

16 dB

31 dB

BIT ERROR (dB)

FREQUENCY (GHz)

-30

-25

-20

-15

-10

-5

0.5 1 1.5 2 2.5 3

I.L.

1 dB

2 dB

4 dB

8 dB

16 dB

31 dB

RETURN LOSS (dB)

FREQUENCY (GHz)

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

OBSOLETE

ATTENUATORS - SMT

5 - 30

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

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 = 5K Ohm is required to supply

voltage to the circuit through either PIN 9

or PIN 16.

Control Voltage Input Attenuation

Setting

RF1 - RF2

16 dB

8 dB

4 dB

2 dB

1 dB

High High High High High Reference I.L.

High High High High Low 1 dB

High High High Low High 2 dB

High High Low High High 4 dB

High Low High High High 8 dB

Low High High High High 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.

Compression Point & IP3

Attenuation

State (dB)

Control

Voltage (V)

Input P1dB (dBm) Input P0.1dB (dBm) Input IP3 (dBm)

+25C +85C -40C +25C +85C -40C +25C +85C -40C

1 5 32.3 31.8 32.9 29.4 28.8 29.8 54.7 49.1 52.2

2 5 32.3 31.8 32.8 29.2 28.6 29.4 52.2 49.1 52.2

4 5 32.8 32.1 33.3 29.4 28.7 29.3 54.1 48.65 52.7

1 3 24.8 25.7 25.2 19.7 18.6 21.1 52.2 48.1 52.5

2 3 24.7 24.1 25.1 19.7 18.3 21.0 52.2 48.1 52.2

4 3 26.0 25.6 26.6 19.6 18.6 21.1 53.1 47.65 53.2

HMC274QS16 / 274QS16E

v01.0505 1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

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

OBSOLETE

ATTENUATORS - SMT

5 - 31

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

Control Voltages

Absolute Maximum Ratings

Outline Drawing

State Bias Condition

Low 0 to +0.2 V @ 20 uA Max

High Vdd ± 0.2V @ 100 uA Max

Note: Vdd = +3V to 5V ± 0.2V

Control Voltage (V1 - V5) Vdd + 0.5 Vdc

Bias Voltage (Vdd) +8.0 Vdc

Storage Temperature -65 to +150 °C

Operating Temperature -40 to +85 °C

RF Input Power (0.7 - 2.7 GHz) +30 dBm

ELECTROSTATIC SENSITIVE DEVICE

OBSERVE HANDLING PRECAUTIONS

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

HMC274QS16 Low Stress Injection Molded Plastic Sn/Pb Solder MSL1 [1] HMC274

XXXX

HMC274QS16E RoHS-compliant Low Stress Injection Molded Plastic 100% matte Sn MSL1 [2] HMC274

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

HMC274QS16 / 274QS16E

v01.0505 1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

NOTES:

1. LEADFRAME MATERIAL: COPPER ALLOY

2. DIMENSIONS ARE IN INCHES [MILLIMETERS].

3. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.15mm PER SIDE.

4. DIMENSION DOES NOT INCLUDE MOLDFLASH OF 0.25mm PER SIDE.

5. ALL GROUND LEADS MUST BE SOLDERED TO PCB RF GROUND.

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

OBSOLETE

ATTENUATORS - SMT

5 - 32

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

1, 2, 8, 10 - 15 GND This pin must be DC grounded.

3 - 7 V1 - V5 See truth table and control voltage table.

9RF1

This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required.

16 RF1 This pin is DC coupled and matched to 50 Ohm.

Blocking capacitors are required.

HMC274QS16 / 274QS16E

v01.0505 1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

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

OBSOLETE

ATTENUATORS - SMT

5 - 33

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 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 Corporation upon request.

List of Materials for Evaluation PCB 104976 [1]

* R2 - R6 = 100 Ohm.

These resistors are optional

and may be used to enhance

decoupling of the RF path

from the control inputs.

Item Description

J1 - J2 PCB Mount SMA Connector

J3 - J11 DC Pin

R1 5k Ohm Resistor, 0402 Chip

R2 - R6 100 Ohm Resistor, 0402 Chip

C1, C2 0402 Chip Capacitor, Select for Lowest

Frequency of Operation

U1 HMC274QS16 / HMC274QS16E

Digital Attenuator

PCB [2] 104931 Evaluation PCB

[1] Reference this number when ordering complete evaluation PCB

[2] Circuit Board Material: Rogers 4350

HMC274QS16 / 274QS16E

v01.0505 1 dB LSB GaAs IC 5-BIT DIGITAL

ATTENUATOR, 0.7 - 2.7 GHz

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

OBSOLETE