MAAD-008789-000100
Digital Attenuator
32.0 dB, 2-Bit, TTL Driver, DC-4.0 GHz
Functional Schematic
Features
•
•
•
•
•
•
•
Attenuation: Two 16 dB bits
Low DC Power Consumption
Small Footprint, PQFN Package
Integral TTL Driver
50 ohm Impedance
Test Boards are Available
RoHS* Compliant
Rev. V1
Description
M/A-COM's MAAD-008789-000100 is a GaAs FET
2-bit digital attenuator with two 16 dB steps and 32
dB total attenuation with integral TTL driver. This
device is in a RoHS compliant PQFN plastic surface
mount package. MAAD-008789-000100 is ideally
suited for use where accuracy, 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.
Environmental screening is
available. Contact the factory for information.
Pin Configuration
1
Pin No.
1
2
3
4
Function
GND
GND
C2
C1
GND
GND
GND
NC
NC
NC
2
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
RF2
GND
NC
2
Vee
NC
+Vcc
Ordering Information
Part Number
MAAD-008789-000100
MAAD-008789-0001TR
MAAD-008789-0001TB
5
6
Package
Bulk Packaging
1000 piece reel
Sample Test Board
7
8
9
10
11
GND
RF1
GND
NC
NC
NC
Note: Reference Application Note M513 for reel size
information.
12
13
14
15
16
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
1.
2.
The exposed pad centered on the package bottom must be
connected to RF and DC ground. (For PQFN Packages)
Pins 10 & 29 must be isolated
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-008789-000100
Digital Attenuator
32.0 dB, 2-Bit, TTL Driver, DC-4.0 GHz
Electrical Specifications: T
A
= 25°C, Z
0
= 50Ω, V
CC
= +5.0V, V
EE
= -5.0V
Parameter
Operating Power
Insertion Loss
Attenuation Accuracy
Relative to Reference Loss State
Rev. V1
Test Conditions
—
—
16 dB Bit (C1 Control)
32 dB Attenuation
Reference Loss
Frequency
—
DC - 4.0 GHz
DC - 4.0 GHz
DC - 4.0 GHz
DC - 4.0 GHz
DC - 4.0 GHz
Units
dBm
dB
Min
—
—
Typ
—
—
Max
+20
0.9
±(0.2 +3% of atten setting in dB)
±(0.2 +3% of atten setting in dB)
Ratio
Ratio
—
—
—
—
1.5:1
1.8:1
VSWR
16 dB Bit (C1 Control)
or 32 dB Attenuation
1.3 V Cntl to 90% RF
1.3 V Cntl to 10% RF
10% RF to 90% RF
90% RF to 10% RF
Reference State
Reference State
Two-tone inputs up to
+5 dBm at reference state
—
—
LOW-level input voltage
HIGH-level input voltage
Vin = V
CC
or GND
Vcntrl = V
CC
or GND
V
CC
= Max
Vcntrl = V
CC
- 2.1 V
V
EE
min to max
Vin = V
IL
or V
IH
—
Switching Speed
Ton
Toff
Trise
Tfall
1 dB Compression
3
Input IP3
Vcc
Vee
V
IL
V
IH
lin (Input Leakage Current)
Icc
(Quiescent Supply Current)
ΔIcc
(Additional Supply Current Per
TTL Input Pin)
I
EE
Thermal Resistance
θjc
3.
—
—
__
__
50 MHz
0.5 - 4.0 GHz
50 MHz
0.5-4.0 GHz
—
—
—
—
—
—
ns
ns
ns
ns
dBm
dBm
dBm
dBm
V
V
V
V
uA
uA
—
—
—
—
—
—
—
—
4.75
-8.0
0.0
1.8
-1
—
190
15
190
6
+25
>+27
+40
+40
5.0
-5.0
0
2.0
—
250
—
—
—
—
—
—
—
—
5.25
-4.75
0.8
5.0
1
400
—
mA
—
—
1.5
—
—
mA
°C/W
-1.0
—
-0.2
15
—
—
1 dB Compression was measured up to +27 dBm, which is the absolute maximum rating for this device.
2
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-008789-000100
Digital Attenuator
32.0 dB, 2-Bit, TTL Driver, DC-4.0 GHz
Rev. V1
Absolute Maximum Ratings
4,5
Parameter
Max. Input Power
V
CC
V
EE
V
CC
- V
EE
Vin
6
Operating Temperature
Storage Temperature
4.
5.
6.
Recommended PCB Configuration
7
Absolute Maximum
+27 dBm
-0.5V
≤
V
CC
≤
+7.0V
-8.5V
≤
V
EE
≤
+0.5V
-0.5V
≤
V
CC
- V
EE
≤
14.5V
-0.5V
≤
Vin
≤
V
CC
+ 0.5V
-40ºC to +85ºC
-65ºC to +125ºC
Exceeding any one or combination of these limits may cause
permanent damage to this device.
M/A-COM does not recommend sustained operation near
these survivability limits.
Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
7.
Application Note S2083 is available on line at
www.macom.com
Handling Procedures
Please observe the following precautions to avoid
damage:
Truth Table (Digital Attenuator)
8
C2
0
0
1
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.
C1
0
1
1
Attenuation
Loss, Reference
16.0 dB
32.0 dB
0 = TTL Low; 1 = TTL High
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.
8.
C1 is specified as the control for the 16 dB bit. We show
data for the performance with the C2 control - note that the
electrical performance of the 16 dB bit controlled by C2 is
not specified.
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-008789-000100
Digital Attenuator
32.0 dB, 2-Bit, TTL Driver, DC-4.0 GHz
Typical Performance
Reference Loss vs. Frequency
2.0
Rev. V1
Attenuation - 16 dB bit (C1) Bit vs. Frequency
18.0
Reference Loss (dB)
1.5
Reference Loss (dB)
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
17.0
1.0
16.0
0.5
15.0
0.0
14.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
Attenuation - 16 dB Bit (C2) vs. Frequency
18.0
Reference Loss (dB)
Attenuation - 32 dB Attenuation vs. Frequency
34.0
33.0
32.0
31.0
30.0
29.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
17.0
16.0
15.0
14.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
VSWR - Reference Loss State vs. Frequency
2.0
VSWR - 16 dB Bit (C1) vs. Frequency
2.0
1.8
VSWR
1.8
1.6
1.4
1.2
VSWR
1.6
1.4
1.2
1.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
1.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
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.
Reference Loss (dB)
MAAD-008789-000100
Digital Attenuator
32.0 dB, 2-Bit, TTL Driver, DC-4.0 GHz
Typical Performance
VSWR - 16 dB Bit (C2) vs. Frequency
2.0
Rev. V1
VSWR - 32 dB Attenuation vs. Frequency
2.0
1.8
1.8
1.6
1.4
1.2
1.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
VSWR
VSWR
1.6
1.4
1.2
1.0
0.0
1.0
2.0
3.0
Frequency (GHz)
4.0
5.0
6.0
Typical IP2 and IP3 at Room Temperature
9
IP2
Attenuation
50 MHz
Reference State
16 dB
32 dB
9.
59
48
47
IP3
Units
2 GHz
80
60
54
500 MHz
80
60
54
50 MHz
40
33
33
500 MHz
45
35
30
2 GHz
42
33
30
dBm
dBm
dBm
IP2 and IP3 are measured with two-tone inputs F1 and F2 up to +5 dBm with 1 MHz spacing.
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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