ST HMC335G16 User Manual

查询HMC335G16供应商

MICROWAVE CORPORATION

Typical Applications

The HMC335G16 is ideal for:

• T elecom Infrastructure

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• Military Radios, Radar & ECM

• Space Applications

• T est Instrumentation

Functional Diagram

ATTENUATORS - SMT

v00.1102

HMC335G16

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

Features

1 dB LSB Steps to 31 dB
Single Control Line Per Bit
+/- 0.5 dB Typical Bit Error
16 Lead Hermetic SMT Package

General Description

The HMC335G16 is a broadband 5-bit GaAs IC
digital attenuator in a 16 lead glass/metal (hermetic)
surface mount package. Cov ering DC to 3 GHz, the
insertion loss is less than 2.3 dB typical. The attenu­ator bit values are 1 (LSB), 2, 4, 8, and 16 dB for
a total attenuation of 31 dB. Attenuation accuracy
is excellent at ±0.5 dB typical with an IIP3 of up to
+44 dBm. Five bit control voltage inputs, toggled
between 0 and -5V, are used to select each attenua­tion state at less than 70 µA each. A single V ee bias
of -5V allows operation down to DC.

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Electrical Specifi cations, T

Parameter Frequency Min. Typical Max. Units

Insertion Loss DC - 1.5 GHz

Attenuation Range DC - 3.0 GHz 31 dB
Return Loss (RF1 & RF2, All Atten. States) DC - 3.0 GHz 13 dB
Attenuation Accuracy: (Referenced to Insertion Loss)

1 - 31 dB States
1 - 27 dB States
28 - 31 dB States
1 - 23 dB States
24 - 27 dB States
28 - 31 dB States

Input Power for 0.1 dB Compression 0.5 - 3.0 GHz 24 dBm
Input Third Order Intercept Point

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

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

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

= +25° C, Vee = -5V & Vctl = 0/Vee

A

1.5 - 3.0 GHz

DC - 1.0 GHz

1.0 - 2.0 GHz

1.0 - 2.0 GHz

2.0 - 3.0 GHz

2.0 - 3.0 GHz

2.0 - 3.0 GHz

0.5 - 3.0 GHz 44 dBm

DC - 3.0 GHz

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± 0.3 + 5% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 8% of Atten. Setting Max
± 0.3 + 5% of Atten. Setting Max
± 0.3 + 8% of Atten. Setting Max

± 0.5 + 10% of Atten. Setting Max

2.0

2.3

140
160

2.5

2.8

dB
dB

dB
dB
dB
dB
dB
dB

ns
ns

MICROWAVE CORPORATION

Insertion Loss

v00.1102

HMC335G16

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

Return Loss RF1, RF2

(Only Major States are Shown)

0

-1

-2

-3

-4

INSERTION LOSS (dB)

-5

-6
0 0.5 1 1.5 2 2.5 3 3.5 4

+25C
+85C

-40C

FREQUENCY (GHz)

Normalized Attenuation

(Only Major States are Shown)

0

-5

-10

-15

-20

-25

-30

NORMALIZED ATTENUATION (dB)

-35
0 0.5 1 1.5 2 2.5 3 3.5 4

1 dB
2 dB
4 dB
8 dB
16 dB
31 dB

FREQUENCY (GHz)

0

-5

-10

-15

-20

-25

RETURN LOSS (dB)

-30

-35
0 0.5 1 1.5 2 2.5 3 3.5 4

FREQUENCY (GHz)

1 dB
2 dB
4 dB

8 dB
16 dB
31 dB

Bit Error
vs. Attenuation State

3

2

1

0

-1

BIT ERROR (dB)

-2

-3
0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32

0.12 GHz

1.0 GHz

2.0 GHz

3.0 GHz

ATTENUATION STATE (dB)

9

ATTENUATORS - SMT

Bit Error vs. Frequency

(Only Major States are Shown)

5
4
3
2
1
0

-1

BIT ERROR (dB)

-2

-3

-4

-5
0 0.5 1 1.5 2 2.5 3 3.5 4

1 dB
2 dB
4 dB

8 dB
16 dB
31 dB

FREQUENCY (GHz)

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

Relative Phase vs. Frequency

(Only Major States are Shown)

100

80

60

40

20

RELATVIE PHASE (deg)

0

-20
0 0.5 1 1.5 2 2.5 3 3.5 4

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1 dB
2 dB
4 dB
8 dB
16 dB
31 dB

FREQUENCY (GHz)

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MICROWAVE CORPORATION

v00.1102

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

Worst Case Step Error

Between Successive Attenuation States

3

HMC335G16

9

Bias Voltage & Current

ATTENUATORS - SMT

Control V oltage

Note: Vee = -5V

Absolute Maximum Ratings

Control Voltage (V1 - V5) Vee - 0.5 Vdc
Bias Voltage (V ee) -7.0 Vdc
Storage Temperature -65 to +150 °C
Operating Temperature -40 to +85 °C
RF Input Power (0.5 - 3 GHz) +26 dBm

2

1

0

-1

STEP ERROR (dB)

-2

-3
0 0.5 1 1.5 2 2.5 3 3.5 4

Vee Range = -5.0 Vdc ± 10%

Vee (VDC) lee (Typ.) (mA) lee (Max.) (mA)

-5.0 3 6

State Bias Condition

Low 0 to -2V @ 70 µA Typ.

High Vee to Vee + 0.8V @ 5 µA Typ.

± 10%

FREQUENCY (GHz)

T ruth T able

16 dBV28 dBV34 dBV42 dBV51 dB

Any combination of the above states will provide an attenuation
approximately equal to the sum of the bits selected.

Control Voltage Input

V1

Low Low Low Low Low Reference I.L.
Low Low Low Low High 1 dB
Low Low Low High Low 2 dB
Low Low High Low Low 4 dB
Low High Low Low Low 8 dB

High Low Low Low Low 16 dB

High High High High High

Attenuation

State

RF1 - RF2

31 dB

Max. Atten.

9 - 58

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

Order Online at www.hittite.com

MICROWAVE CORPORATION

Outline Drawing

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HMC335G16

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

9

NOTES:

1. PACKAGE MATERIAL: ALUMINA LOADED BOROSILICATE GLASS.

2. LEADS, BASE, COVER MATEIRAL: KOVARTM (#7052 CORNING).

3. PLATING: ELECTROLYTIC GOLD 50 MICROINCHES MIN.,
OVER ELECTROLYTIC NICKEL 75 MICROINCHES MIN.

4. ALL DIMENSIONS ARE IN INCHES [MILLIMETERS].

5. TOLERANCES: 0.005 [.013] UNLESS OTHERWISE SPECIFIED.

6. CHARACTERS TO BE HELVETICA MEDIUM .030 HIGH,
BLACK INK, LOCATED APPROX. AS SHOWN.

7. ALL GROUND LEADS AND GROUND PADDLE MUST BE SOLDERED
TO PCB RF GROUND.

Pin Descriptions

Pin Number Function Description Interface Schematic

1 V ee Supply Voltage -5V ±10%

2, 4-9, 11 GND Package bottom must also be connected to RF ground.

3, 10 RF1, RF2

12-16 V1-V5 See truth table and control voltage table.

These pins are DC coupled and matched to 50 Ohm.

Blocking capacitors are required.

ATTENUATORS - SMT

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

Order Online at www.hittite.com

9 - 59

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MICROWAVE CORPORATION

Application Circuit

v00.1102

HMC335G16

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

DC Blocking Capacitors C1 & C2 are required on RF1 & RF2. Choose C1 = C2 = 100 pF ~ 0.1 uF to allow lowest customer

ATTENUATORS - SMT

specifi c frequency to pass with minimal loss. R1= 5K Ohm is required to supply voltage to the circuit through either Pin 3 or
Pin 10.

Suggested Driver Circuit

(One Circuit Required Per Bit Control Input)

Simple driver using inexpensive standard logic ICs pro vides f ast s witching using minimum DC current. * Recommended value
to suppress unwanted RF signals at V1 - V5 control lines.

9 - 60

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

Order Online at www.hittite.com

MICROWAVE CORPORATION

Evaluation PCB

v00.1102

HMC335G16

1dB LSB GaAs MMIC 5-BIT DIGITAL

ATTENUATOR, DC - 3 GHz

9

List of Material

Item Description
J1 - J2 PC Mount SMA Connector
J3 DC Connector
R1 5k Ohm Resistor 0402 Pkg.
R2 - R6 100 Ohm Resistor, 0402 Pkg.

C1, C2

C3 1000pF Capacitor, 0603 Pkg.
U1 HMC335G16 Digital Attenuator
PCB* 106467 Evaluation PCB
*Circuit Board Material: Rogers 4350

0402 Chip Capacitor,
Select Value for Lowest Frequency of Operation

* R2 - R6 = 100 Ohm.
These resistors are optional and may be
used to enhance decoupling of the RF
path from the control inputs.

ATTENUATORS - SMT

The circuit board used in the fi nal application should use RF cir­cuit design techniques. Signal lines should have 50 ohm imped­ance while the package ground leads and package bottom
should be connected directly to the ground plane similar to that
shown. A suffi cient 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.

For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
12 Elizabeth Drive, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]

Order Online at www.hittite.com

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