MAATCC0008 - M/A-COM Technology Solutions

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

1

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

1

Features

 Attenuation: 1.0 dB steps to 15 dB

 Low DC Power Consumption

 Integral TTL Driver

 50 Ohm Impedance

 Temperature Stability: ±0.18 dB from –40°C to

+85°C Typ.

 Lead-Free SO-16 Package

 100% Matte Tin Plating over Copper

 Halogen-Free ―Green‖ Mold Compound

 260°C Reflow Compatible

 RoHS* Compliant Version of AT65-0413

Description

M/A-COM’s MAATCC0008 is a GaAs FET 4-bit

digital attenuator with a 1.0 dB minimum step size

and a 15 dB total attenuation range. This device is in

a SOIC-16 plastic surface mount package. The

MAATCC0008 is ideally suited for use where

accuracy, fast speed, very low power consumption

and low costs are required. Typical applications

include dynamic range setting in precision receiver

circuits and other gain/leveling control circuits.

Ordering Information

Part Number Package

MAATCC0008 Bulk Packaging

MAATCC0008TR 1000 piece reel

MAATCC0008-TB Sample Test Board

Note: Reference Application Note M513 for reel size

information.

Schematic with Off-Chip Components or

Functional Block Diagram

Pin Configuration

Pin No. Function Pin No. Function

1 GND 9 C2

2 RF1 10 C1

3 GND 11 GND

4 NC1 12 GND

5 Vee 13 NC1

6 Vcc 14 GND

7 C4 15 RF2

8 C3 16 GND

* Restrictions on Hazardous Substances, European Union Directive 2002/95/EC.

1. NC = No Connection

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

2

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

2

Electrical Specifications: TA = 25°C

Parameter Test Conditions Frequency Units Min Typ Max

Insertion Loss — DC - 0.5 GHz

DC - 2.0 GHz

DC - 3.0 GHz

dB

—

1.5

1.8

2.1

1.9

2.2

2.6

Attenuation Accuracy Any Bit or Combination of Bits DC - 3.0 GHz dB ± (.25 + 3% of attenuation) or ± .55 dB,

Whichever is greater

VSWR Full Range DC - 3.0 GHz Ratio — — 1.6:1

Trise, Tfall

Ton, Toff

Transients

10% to 90%

50% Cntl to 90%/10% RF

In-Band

10% to 90%

50% Cntl to 90%/10% RF

In-Band

nS

mV

—

10

30

35

50

150

—

Switching Speed 50% Cntl to 90%/10% RF

10% to 90% or 90% to 10%

—

ns

—

25

4

—

1 dB Compression — 50 MHz

0.5 - 3.0 GHz

dBm

—

+21

+27

—

Input IP3 Two-tone Inputs up to +5 dBm 50 MHz

0.5 - 3.0 GHz

dBm

—

+35

+48

—

Input IP2 Two-tone inputs up to +5 dBm 0.05 GHz

0.5 - 3.0 GHz

dBm

—

+43

+73

—

Vcc

VEE

— —

—

V

4.5

-8.0

5.0

-5.0

5.5

-4.75

VIL

VIH

LOW-level input voltage

HIGH-level input voltage

—

V

0.0

2.0

—

0.8

5.0

lin (Input Leakage Current) Vin = VCC or GND — uA -1.0 — 1.0

Icc

(Quiescent Supply Current)

Vcntrl = VCC or GND — uA — 250 400

ΔIcc

(Additional Supply Current Per

TTL Input Pin)

VCC = Max, Vcntrl = VCC - 2.1 V — mA — — 1.0

IEE VEE min to max, Vin = VIL or VIH — mA -1.0 -0.2 —

Absolute Maximum Ratings 2,3

Parameter Absolute Maximum

Max. Input Power

0.05 GHz

0.5 - 3.0 GHz

+27 dBm

+34 dBm

VCC -0.5V ≤ VCC ≤ +7.0V

VEE -8.5V ≤ VEE ≤ +0.5V

VCC - VEE -0.5V ≤ VCC - VEE ≤ 14.5V

Vin4 -0.5V ≤ Vin ≤ VCC + 0.5V

Operating Temperature -40ºC to +85ºC

Storage Temperature -65ºC to +125ºC

2. Exceeding any one or combination of these limits may

cause permanent damage to this device.

3. M/A-COM does not recommend sustained operation near

these survivability limits.

4. Standard CMOS TTL interface, latch-up will occur if logic

signal is applied prior to power supply.

Recommended PCB Configuration

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

3

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

3

Handling Procedures

Please observe the following precautions to avoid

damage:

Static Sensitivity

Gallium Arsenide Integrated Circuits are sensitive

to electrostatic discharge (ESD) and can be

damaged by static electricity. Proper ESD control

techniques should be used when handling these

devices.

Truth Table (Digital Attenuator)

C1 C2 C3 C4 Attenuation

0 0 0 0 Loss, Reference

1 0 0 0 1.0 dB

0 1 0 0 2.0 dB

0 0 1 0 4.0 dB

0 0 0 1 8.0 dB

1 1 1 1 15.0 dB

0 = TTL Low; 1 = TTL High

Typical Performance Curves

Reference Loss vs. Frequency Attenuation - 1 dB Bit vs. Frequency

Attenuation - 2 dB Bit vs. Frequency Attenuation - 4 dB Bit vs. Frequency

0.0

1.0

2.0

3.0

4.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Reference Loss (dB)

85ºC 25ºC

-40ºC

0.8

0.9

1.0

1.1

1.2

1.3

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Attenuation (dB)

85ºC

25ºC

-40ºC

1.8

2.0

2.2

2.4

2.6

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Attenuation (dB)

85ºC

25ºC

-40ºC

3.8

4.0

4.2

4.4

4.6

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Attenuation (dB)

85ºC

25ºC

-40ºC

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

4

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

4

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

7.8

8.0

8.2

8.4

8.6

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Attenuation (dB)

14.5

15.0

15.5

16.0

16.5

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

Attenuation (dB)

Attenuation - 15 dB Attenuation

vs. Frequency

VSWR vs. Frequency

Reference Loss State VSWR - 1 dB Bit vs. Frequency

Typical Performance Curves

VSWR - 2 dB Bit vs. Frequency VSWR - 4 dB Bit vs. Frequency

Attenuation - 8 dB Bit vs. Frequency

RF2

RF1

RF2

RF1

RF2 RF1

RF2

RF1

85ºC

25ºC -40ºC

85ºC

25ºC

-40ºC

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

5

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

5

VSWR - 15 dB Attenuation vs. Frequency

Typical Performance Curves

VSWR - 8 dB Bit vs. Frequency

Lead-Free, SOIC-16†

† Reference Application Note M538 for lead-free solder reflow

recommendations.

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

1.0

1.2

1.4

1.6

1.8

2.0

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0

Frequency (GHz)

VSWR

RF2 RF1 RF2 RF1

Digital Attenuator

15.0 dB, 4-Bit, TTL Driver, DC-3.0 GHz

Rev. V5

MAATCC0008

6

M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.

Visit www.macom.com for additional data sheets and product information.

For further information and support please visit:

https://www.macom.com/support

6

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