Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Features
• Attenuation: 1.0dB Steps to 31dB
• Single Positive Supply
• Contains internal DC to DC converter
• Low DC Power Consumption
• Small Footprint, JEDEC Package
• Integral TTL Driver
• 50 ohm Impedance
• Lead-Free CSP-1 Package
• 100% Matte Tin Plating over Copper
• Halogen-Free “Green” Mold Compound
• 260°C Reflow Compatible
• RoHS* Compliant Version of AT90-1263
Description
M/A-COM's MAAD-007078-000100 is a GaAs FET
5-bit digital attenuator with integral TTL driver. Step
size is 1.0 dB providing 31 dB total attenuation
range. This device is in an FQFP-N plastic surface
mount package. The MAAD-007078-000100 is
ideally suited for use where accuracy, fast speed,
very low power consumption and low costs are
required. For dual supply designs without DC-DC
converter noise, use MAATCC0010.
Ordering Information
Part Number Package
MAAD-007078-000100 Bulk Packaging
MAAD-007078-0001TR 1000 piece reel
MAAD-007078-0001TB Sample Test Board
Note: Reference Application Note M513 for reel size
information.
Functional Schematic
Pin Configuration
Pin No. Function Pin No. Function
1 GND 17 NC
2 C16 18 NC
3 C8 19 Vcc
4 C4 20 NC
5 C2 21 CP2
6 C1 22 NC
7 GND 23 CP1
8 NC 24 NC
9 NC 25 Vee2
10 NC1 26 GND
11 GND 27 RF2
12 RF1 28 GND
13 GND 29 NC1
14 NC 30 Vee2
15 NC 31 NC
16 NC 32 Vcc
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1. Pins 10 & 29 must be isolated
2. The negative voltage Vee is produced internally and
requires a 0.1µF cap to GND. Generated noise is typical of
switching DC-DC Converters.
3. The exposed pad centered on the package bottom must be
connected to RF and DC ground. (For PQFN Packages)
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
2
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Electrical Specifications: TA = 25°C, Z0 = 50 Ω
Parameter Frequency Units Min Typ Max
Insertion Loss DC - 3.0 GHz dB — 3.5 3.8
Attenuation Accuracy DC - 3.0 GHz
DC - 3.0 GHz
dB
dB
—
—
—
—
±(.3 +5% of atten setting)
±(.5 +7% of atten setting)
VSWR DC - 3.0 GHz Ratio — 2.0:1 2.2:1
Switching Speed —
—
ns
ns
—
—
75
20
150
50
1 dB Compression 50 MHz
0.5 - 3.0 GHz
dBm
dBm
—
—
+21
+24
—
—
Input IP3 50 MHz
0.5-3.0 GHz
dB
dB
—
—
+35
+48
—
—
Vcc — V 4.75 5.0 5.25
VIL
VIH
—
—
V
V
0.0
2.0
—
—
0.8
5.0
lin (Input Leakage Current) — uA -1.0 — 1.0
Test Conditions
—
Individual Bits 1-2-4-8-16 dB
Any Combination of Bits 1 to 31 dB
Full Range
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
Two-tone inputs up to +5 dBm
—
LOW-level input voltage
HIGH-level input voltage
Vin = VCC or GND
Icc4 Vcc min to max,
Logic “0” or “1”
— mA — 6 10
Turn-on Current5 For guaranteed start-up — mA — — 125
Switching Noise Generated from
DC-DC Converter with
recommended capacitors
3.5 MHz dBm — -93 —
Thermal Resistance θjc — — °C/W — 35 —
ΔIcc
(Additional Supply Current
Per TTL Input Pin)
VCC = Max, Vcntrl = VCC - 2.1 V — mA — — 1.0
4. During turn-on, the device requires an initial start up current (Icc)
specified as “Turn-on Current”. Once operational, Icc will drop to the
specified levels.
5. The DC-DC converter is guaranteed to start in 100 µs as long as the
power supplies have the maximum turn-on current available for start
up.
Absolute Maximum Ratings 6,7
Parameter Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 3.0 GHz
+27 dBm
+34 dBm
VCC -0.5V ≤ VCC ≤ +6.0V
Vin8 -0.5V ≤ Vin ≤ VCC + 0.5V
Operating Temperature -40ºC to +85ºC
Storage Temperature -65ºC to +125ºC
6. Exceeding any one or combination of these limits may cause
permanent damage to this device.
7. M/A-COM does not recommend sustained operation near
these survivability limits.
8. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
Recommended PCB Configuration 9
9. Application Note S2083 is available on line at www.macom.com
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
3
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
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.
Moisture Sensitivity
The MSL rating for this part is defined as Level 2
per IPC/JEDEC J-STD-020. Parts shall be stored
and/or baked as required for MSL Level 2 parts.
Truth Table (Digital Attenuator)
C16 C8 C4 C2 C1 Attenuation
0 0 0 0 0 Loss, Reference
0 0 0 0 1 1.0 dB
0 0 0 1 0 2.0 dB
0 0 1 0 0 4.0 dB
0 1 0 0 0 8.0 dB
1 0 0 0 0 16.0 dB
1 1 1 1 1 31.0 dB
0 = TTL Low; 1 = TTL High
VSWR @ Insertion Loss
Attenuation Error, 1 dB Bit Attenuation Error, 2 dB Bit
Typical Performance Curves
Insertion Loss
1. 0
2.0
3.0
4.0
0 1000 2000 3000 4000
Freq uency (M Hz)
Loss (dB)
1. 0 0
2.00
3.00
0 1000 2000 3000 4000
Fre que ncy (MHz )
VSWR
Input Output
-0.1
0
0.1
0.2
0.3
0 1000 2000 3000 4000
Frequency (MHz)
Er ror ( d B)
-0.1
0
0.1
0.2
0.3
0 1000 2000 3000 4000
Frequency (MHz)
Er ror ( d B)
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
4
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
Attenuation Error, 8 dB Bit
Attenuation Error, 16 dB Bit Attenuation Error, Max. Attenuation
Typical Performance Curves
VSWR, 1 dB Bit VSWR, 2 dB Bit
Attenuation Error, 4 dB Bit
-0.1
0.1
0.3
0.5
0.7
0 1000 2000 3000 4000
Frequency (M Hz)
Er ror ( d B)
-0.1
0.1
0.3
0.5
0.7
0 1000 2000 3000 4000
Frequency (M Hz)
Er ror ( d B)
-1.5
-0.5
0.5
1. 5
0 1000 2000 3000 4000
Fre quency (MHz )
Er ror ( d B)
-1.5
-0.5
0.5
1. 5
0 1000 2000 3000 4000
Fre quency (MHz )
Er ror ( d B)
1. 0
1. 2
1. 4
1. 6
1. 8
0 1000 2000 3000 4000
Freq uency (M Hz)
VSWR
InputOutput
1. 0
1. 2
1. 4
1. 6
0 1000 2000 3000 4000
Freq uency (M Hz)
VSWR
Input Output
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
5
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
VSWR, 8 dB Bit
VSWR, 16 dB Bit VSWR, Maximum Attenuation
Typical Performance Curves
VSWR, 4 dB Bit
1. 0
1. 2
1. 4
1. 6
0 1000 2000 3000 4000
Freq uency (M Hz)
VSWR
Input Output
1. 0
1. 2
1. 4
1. 6
0 1000 2000 3000 4000
Frequency (MHz)
VSWR
Input Output
1. 0
1. 2
1. 4
1. 6
0 1000 2000 3000 4000
Frequency (M Hz)
VSWR
Input Output
1. 0
1. 2
1. 4
1. 6
0 1000 2000 3000 4000
Frequency (MHz)
VSWR
Input Output
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V4
MAAD-007078-000100
• North America Tel: 800.366.2266 • Europe Tel: +353.21.244.6400
• India Tel: +91.80.4155721 • China Tel: +86.21.2407.1588
Visit www.macomtech.com for additional data sheets and product information.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
changes to the product(s) or information contained herein without notice.
6
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
Commitment to produce in volume is not guaranteed.
CSP-1, Lead-Free 4 x 6 mm, 32-lead PQFN†
† Reference Application Note M538 for lead-free solder reflow
recommendations.
