MAAD-007079-000100
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Features
•
•
•
•
•
•
•
•
•
•
•
•
Attenuation: 2 dB Steps to 30 dB
Single Positive Supply
Contains Internal DC to DC Converter
Integral TTL Driver
50 Ohm Impedance
Test Boards Available
Tape and Reel Packaging Available
Lead-Free CSP-1 Package
100% Matte Tin Plating over Copper
Halogen-Free “Green” Mold Compound
260°C Reflow Compatible
RoHS* Compliant Version of AT90-1233
Rev. V4
Functional Schematic
Description
M/A-COM’s MAAD-007079-000100 is a GaAs FET
4-Bit digital attenuator with integral driver. Step size
is 2 dB providing a 30 dB attenuation range. This
device is in an FQFP-N plastic surface mount pack-
age. The MAAD-007079-000100 is suited for single
supply applications where accuracy, fast speed, low
power consumption and low costs are required. For
dual supply designs without switching noise, use
MAATCC0012.
Pin Configuration
3
Pin No.
1
2
3
4
5
6
Function
GND
C16
C8
C4
C2
GND
GND
NC
NC
NC
1
GND
RF1
GND
NC
NC
NC
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
NC
NC
V
CC
NC
Cp
NC
Cp
NC
V
EE
2
GND
RF2
GND
NC
1
V
EE
2
NC
V
CC
Ordering Information
Part Number
MAAD-007079-000100
MAAD-007079-0001TR
MAAD-007079-0001TB
7
8
Package
Bulk Packaging
1000 piece reel
Sample Test Board
9
10
11
12
13
Note: Reference Application Note M513 for reel size
information.
14
15
16
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
1. Pins 10 and 29 must be isolated.
2. V
EE
is produced internally and requires a .1 µF 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)
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MAAD-007079-000100
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Electrical Specifications: T
A
= 25°C, Z
0
= 50Ω
Parameter
Insertion Loss
Attenuation Accuracy
VSWR
Switching Speed
1 dB Compression
Input IP
3
Vcc
V
IL
V
IH
lin (Input Leakage Current)
Icc
4
Turn-on Current
5
ΔIcc
(Additional Supply Current
Per TTL Input Pin)
Switching Noise
Rev. V4
Test Conditions
—
Individual Bits or Combination of Bits
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 = V
CC
or GND
Vcc min to max,
Logic “0” or “1”
For guaranteed start-up
V
CC
= Max, Vcntrl = V
CC
- 2.1 V
Frequency
DC - 2.5 GHz
DC - 2.5 GHz
DC - 2.5 GHz
—
—
50 MHz
0.5 - 2.5 GHz
50 MHz
0.5 - 2.5 GHz
—
—
—
—
—
—
—
Units
dB
dB
Ratio
nS
nS
dBm
dBm
dB
dB
V
V
V
uA
mA
mA
mA
Min
—
—
—
—
—
—
—
—
—
4.75
0.0
2.0
-1.0
—
—
—
Typ
2.7
—
1.5:1
75
20
+21
+29
+35
+48
5.0
—
—
—
6
—
—
Max
3.0
±(.3 +5% of atten setting)
1.8:1
150
50
—
—
—
—
5.25
0.8
5.0
1.0
10
125
1.0
Generated from
DC-DC Converter with
recommended capacitors
—
3.5 MHz
dBm
—
-93
—
Thermal Resistance
θjc
—
°C/W
—
15
—
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.
Recommended PCB Configuration
9
Absolute Maximum Ratings
6,7
Parameter
Max. Input Power
0.05 GHz
0.5 - 2.5 GHz
V
CC
Vin
8
Operating Temperature
Storage Temperature
Absolute Maximum
+27 dBm
+34 dBm
-0.5V
≤
V
CC
≤
+6.0V
-0.5V
≤
Vin
≤
V
CC
+ 0.5V
-40ºC to +85ºC
-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 sig-
nal is applied prior to power supply.
2
9. Application Note C2083 is available on line at www.macom.com
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MAAD-007079-000100
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Handling Procedures
Please observe the following precautions to avoid
damage:
Rev. V4
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)
C16
0
0
0
0
1
1
C6
0
0
0
1
0
1
C4
0
0
1
0
0
1
C2
0
1
0
0
0
1
Attenuation
Loss, Reference
2.0 dB
4.0 dB
8.0 dB
16.0 dB
30.0 dB
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.
0 = TTL Low; 1 = TTL High
Typical Performance Curves
Insertion Loss
3.00
VSWR @ Insertion Loss
O ut p ut
1.60
Inp ut
Attenuation (dB)
2.50
1.40
1.50
VSWR
1.20
0
500
1000
1500
2000
2500
2.00
1.00
1.00
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
Fre que ncy (MHz )
Attenuation Error, 2 dB Bit
0.30
0.20
Attenuation Error, 4 dB Bit
0.40
Attenuation (dB)
0.10
0.00
-0.10
-0.20
-0.30
0
500
1000
1500
2000
2500
Attenuation (dB)
0.20
0.00
-0.20
-0.40
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
3
Fre que ncy (MHz )
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MAAD-007079-000100
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Typical Performance Curves
Attenuation Error, 8 dB Bit
0.40
Rev. V4
Attenuation Error, 16 dB Bit
0.00
Attenuation (dB)
0.00
Attenuation (dB)
0
500
1000
1500
2000
2500
0.20
-0.20
-0.40
-0.20
-0.60
-0.40
-0.80
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
Fre que ncy (MHz )
Attenuation Error, Max. Attenuation
0.50
VSWR, 2 dB Bit
Out p ut
1.60
Inp ut
Attenuation (dB)
0.00
-1.00
VSWR
1.20
-0.50
1.40
-1.50
0
500
1000
1500
2000
2500
1.00
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
Fre que ncy (MHz )
VSWR, 4 dB Bit
O ut p ut
1.60
I np ut
VSWR, 8 dB Bit
Out p ut
1.60
I np ut
1.40
1.40
VSWR
VSWR
1.20
1.20
1.00
0
500
1000
1500
2000
2500
1.00
0
500
1000
1500
2000
2500
Fre que ncy (MHz)
4
Fre que ncy (MHz )
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MAAD-007079-000100
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Typical Performance Curves
VSWR, 16 dB Bit
Out p ut
1.60
I np ut
1.60
Rev. V4
VSWR, Maximum Attenuation
Out p ut
I np ut
1.40
1.40
VSWR
VSWR
1.20
1.20
1.00
0
500
1000
1500
2000
2500
1.00
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
Fre que ncy (MHz )
CSP-1, Lead-Free
4 x 6 mm, 32-lead PQFN
†
†
Reference Application Note M538 for lead-free solder reflow
recommendations.
5
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
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.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
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