MAAD-008790-000100
Constant Phase Digital Attenuator
32 dB, 2-Bit, TTL Driver, DC-3.0 GHz
Features
•
•
•
•
•
•
•
•
Attenuation: 1.0 dB Steps to 31.0 dB
Phase error: ± 3º Typical at 2 GHz
Low DC Power Consumption
Small Footprint, PQFN Package
Integral TTL Driver
50 ohm Impedance
Test Boards are Available
RoHS* Compliant
Rev. V1
Functional Schematic
Description
M/A-COM's MAAD-008790-000100 is a GaAs
pHEMT 5-bit digital attenuator with integral TTL
driver. This attenuator was designed to minimize
phase variation over attenuation. Step size is 1.0 dB
providing a 31.0 dB total attenuation range. This
device is in an PQFN plastic surface mount
package. MAAD-008790-000100 is ideally suited for
use where accuracy, constant phase over attenua-
tion, very low power consumption and low costs are
required.
Pin Configuration
1
Pin No.
1
2
3
4
Function
GND
C4
C3
C2
C1
C5
GND
NC
NC
NC
2
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
NC
NC
NC
NC
NC
NC
NC
GND
RF2
GND
NC
2
Vee
NC
+Vcc
Ordering Information
Part Number
MAAD-008790-000100
MAAD-008790-0001TR
MAAD-008790-0001TB
5
6
Package
Bulk Packaging
1000 piece reel
Sample Test Board
7
8
9
10
11
12
13
14
15
16
1.
Note: Reference Application Note M513 for reel size
information.
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
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-008790-000100
Constant Phase Digital Attenuator
32 dB, 2-Bit, TTL Driver, DC-3.0 GHz
Electrical Specifications: T
A
= 25°C, Z
0
= 50Ω, V
CC
= +5.0V, V
EE
= -5.0V
Parameter
Operating Power
Reference Insertion Loss
Attenuation Accuracy
3
Relative to Reference Loss State
Phase Accuracy
Relative to Reference Loss State
VSWR
Switching Speed
Ton
Toff
Trise
Tfall
1 dB Compression
4
Input IP3
Input IP2
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.
4.
Rev. V1
Test Conditions
—
—
Any Single Bit
Any Combination of Bits
Any Single Bit
Any Single Bit
Any Combination of Bits
Any Combination of Bits
Full Range
Frequency
—
DC - 2.0 GHz
2.0 - 4.0 GHz
DC - 4.0 GHz
DC - 4.0 GHz
DC - 2.0 GHz
2.0 - 4.0 GHz
DC - 2.0 GHz
2.0 - 4.0 GHz
DC - 4.0 GHz
Units
dBm
dB
dB
Min
—
—
—
Typ
—
—
—
Max
+20
5.0
5.5
±(0.3 +3% of atten setting in dB)
±(0.3 +3% of atten setting in dB)
deg
deg
deg
deg
Ratio
—
—
—
—
—
—
—
—
—
—
±3º
±5º
±5º
±9º
1.8:1
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
Two-tone inputs
up to +5 dBm
—
—
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
—
—
—
__
__
0.05 GHz
0.5 - 4.0 GHz
0.05-4.0 GHz
0.05-4.0 GHz
—
—
—
—
—
ns
ns
ns
ns
dBm
dBm
dBm
dBm
V
V
V
V
uA
—
—
—
—
—
—
—
—
4.5
-8.0
0.0
2.0
-1
See Table
13
See Table
3
>+27
>+27
See Table
See Table
5.0
-5.0
0.0
5.0
—
—
—
—
—
—
—
—
—
5.5
-4.5
0.8
5.0
1
—
uA
—
250
400
—
mA
—
—
1.5
—
—
mA
°C/W
-1.0
—
-0.2
35
—
—
This attenuator is guaranteed monotonic.
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-008790-000100
Constant Phase Digital Attenuator
32 dB, 2-Bit, TTL Driver, DC-3.0 GHz
Rev. V1
Recommended PCB Configuration
8
Absolute Maximum Ratings
5,6
Parameter
Max. Input Power
V
CC
V
EE
V
CC
- V
EE
Vin
7
Operating Temperature
Storage Temperature
5.
6.
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.
8.
Application Note S2083 is available on line at
www.macom.com
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)
C5
0
0
0
0
0
1
1
C4
0
0
0
0
1
0
1
C3
0
0
0
1
0
0
1
C2
0
0
1
0
0
0
1
C1
0
1
0
0
0
0
1
Attenuation
Loss, Reference
1.0 dB
2.0 dB
4.0 dB
8.0 dB
16.0 dB
31.0 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
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-008790-000100
Constant Phase Digital Attenuator
32 dB, 2-Bit, TTL Driver, DC-3.0 GHz
Typical Performance Curves
Reference Loss vs. Frequency
Attenuation - 1 dB Bit vs. Frequency
Rev. V1
7.00
25ºC
1.20
-40ºC
Reference Loss (dB)
6.00
85ºC
Attenuation (dB)
1.10
1.00
0.90
85ºC
25ºC
5.00
-40ºC
4.00
3.00
0
1
2
3
4
Frequency (GHz)
5
6
0.80
0
1
2
3
4
5
6
Frequency (GHz)
Attenuation - 2 dB Bit vs. Frequency
Attenuation - 4 dB Bit vs. Frequency
2.75
2.50
2.25
2.00
85ºC
4.75
Attenuation (dB)
25ºC
-40ºC
25ºC
-40ºC
Attenuation (dB)
4.50
4.25
4.00
85ºC
1.75
0
1
2
3
4
Frequency (GHz)
5
6
3.75
0
1
2
3
4
Frequency (GHz)
5
6
Attenuation - 8 dB Bit vs. Frequency
8.75
Attenuation (dB)
8.50
8.25
8.00
85ºC
25ºC
-40ºC
Attenuation - 16 dB Bit vs. Frequency
17.50
25ºC
17.00
Loss (dB)
85ºC
16.50
16.00
-40ºC
7.75
0
1
2
3
4
Frequency (GHz)
5
6
15.50
0
1
2
3
4
Frequency (GHz)
5
6
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-008790-000100
Constant Phase Digital Attenuator
32 dB, 2-Bit, TTL Driver, DC-3.0 GHz
Typical Performance Curves
Attenuation - 31 dB Attenuation vs. Frequency
Phase - 1 dB Bit vs. Frequency
Relative to Reference Loss State
6.00
25ºC
-40ºC
Rev. V1
32.50
32.00
Loss (dB)
31.50
31.00
85ºC
25ºC
-40ºC
Phase (Degrees)
4.00
2.00
0.00
-2.00
85ºC
30.50
0
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
5
6
Phase - 2 dB Bit vs. Frequency
Relative to Reference Loss State
4.00
2.00
0.00
-2.00
-4.00
0
1
2
3
4
Frequency (GHz)
5
6
-40ºC
25ºC
Phase - 4 dB Bit vs. Frequency
Relative to Reference Loss State
6.00
4.00
2.00
0.00
-2.00
-4.00
0
1
2
3
4
Frequency (GHz)
5
6
85ºC
-40ºC
25ºC
Phase (Degrees)
85ºC
Phase - 8 dB Bit vs. Frequency
Relative to Reference Loss State
6.00
-40ºC
Phase - 16 dB Bit vs. Frequency
Relative to Reference Loss State
8.00
25ºC
-40ºC
Phase (Degrees)
Phase (Degrees)
3.00
0.00
-3.00
85ºC
25ºC
Phase (Degrees)
4.00
0.00
-4.00
-8.00
85ºC
-6.00
0
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
5
6
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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