MAAD-007077-000100
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Features
•
•
•
•
•
•
•
•
•
•
•
•
Attenuation: 1 dB Steps to 15 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 AT90-1413
Rev. V5
Functional Schematic
Description
M/A-COM’s MAAD-007077-000100 is a GaAs FET
4-Bit digital attenuator with integral driver. Step size
is 1 dB providing a 15 dB attenuation range. This
device is in an PQFN plastic surface mount pack-
age. The MAAD-007077-000100 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
MAADCC0006.
Pin Configuration
Pin No.
1
2
3
4
Function
GND
C8
C4
C2
C1
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
Vcc
N/C
Cp
NC
Cp
NC
Vee
2
GND
RF2
GND
NC
1
Vee
2
NC
Vcc
Ordering Information
Part Number
MAAD-007077-000100
MAAD-007077-0001TR
MAAD-007077-0001TB
5
6
Package
Bulk Packaging
1000 piece reel
Sample Test Board
7
8
9
10
11
12
13
14
15
16
Note: Reference Application Note M513 for reel size
information.
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
1. Pins 10 & 29 must be isolated.
2. Vee 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-007077-000100
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 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. V5
Test Conditions
—
Individual Bits or
Combination of Bits
Full Attenuation 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-4.0 GHz
DC-2.5 GHz
DC-4.0 GHz
DC-2.5 GHz
DC-4.0 GHz
—
—
50 MHz
0.5-4.0 GHz
50 MHz
0.5-4.0 GHz
—
—
—
—
—
—
—
Units
dB
dB
dB
dB
Ratio
Ratio
ns
ns
dBm
dBm
dBm
dBm
V
V
V
uA
mA
mA
mA
Min
—
—
—
—
—
—
—
—
—
—
—
—
4.75
0.0
2.0
-1.0
—
—
—
Typ
2.0
2.5
—
—
1.5:1
1.8:1
25
4
+21
+27
+35
+48
5.0
—
—
—
6
—
—
Max
2.5
3.0
±(0.3+4% of atten setting)
±(0.3+6% of atten setting)
1.8:1
2.0:1
—
—
—
—
—
—
5.25
0.8
5.0
1.0
10
125
1.5
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 - 4.0 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 S2083 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-007077-000100
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Handling Procedures
Please observe the following precautions to avoid
damage:
Rev. V5
Truth Table (Digital Attenuator)
C8
0
0
0
0
1
1
C4
0
0
0
1
0
1
C2
0
0
1
0
0
1
C1
0
1
0
0
0
1
Attenuation
Loss, Reference
1.0 dB
2.0 dB
4.0 dB
8.0 dB
15.0 dB
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.
0 = TTL Low; 1 = TTL High
Typical Performance Curves
Reference Loss vs. Frequency
4.0
Attenuation - 1 dB Bit vs. Frequency
1.3
-40ºC
Reference Loss (dB)
85ºC
2.0
25ºC
Attenuation (dB)
3.0
1.2
25ºC
1.1
1.0
0.9
0.8
1.0
-40ºC
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
85ºC
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
Attenuation - 2 dB Bit vs. Frequency
2.6
Attenuation - 4 dB Bit vs. Frequency
4.6
Attenuation (dB)
2.2
Attenuation (dB)
2.4
-40ºC
85ºC
4.4
-40ºC
25ºC
4.2
2.0
4.0
25ºC
1.8
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
3.8
0.0
0.5
1.0
1.5
85ºC
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
3
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-007077-000100
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Typical Performance Curves
Attenuation - 8 dB Bit vs. Frequency
Attenuation - 15 dB Attenuation vs. Frequency
Rev. V5
8.6
16.5
-40ºC
Attenuation (dB)
8.4
25ºC
16.0
Attenuation (dB)
15.5
15.0
-40ºC
25ºC
8.2
8.0
85ºC
85ºC
14.5
7.8
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
14.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
VSWR vs. Frequency
Reference Loss State
2.0
1.8
1.6
1.4
1.2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
VSWR - 1 dB Bit vs. Frequency
2.0
1.8
RF1
VSWR
VSWR
1.6
1.4
1.2
RF1
RF2
RF2
3.0
3.5
4.0
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
VSWR - 2 dB Bit vs. Frequency
VSWR - 4 dB Bit vs. Frequency
2.0
1.8
1.6
1.4
1.2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
2.0
1.8
1.6
VSWR
VSWR
RF2
RF1
RF2
1.4
1.2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
RF1
4
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-007077-000100
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Typical Performance Curves
VSWR - 8 dB Bit vs. Frequency
VSWR - 15 dB Attenuation vs. Frequency
Rev. V5
2.0
1.8
1.6
1.4
1.2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
2.0
1.8
1.6
1.4
1.2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
VSWR
RF1
RF2
VSWR
RF2
RF1
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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