MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Functional Schematic
Features
Rev. V5
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
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 package. 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.
Ordering Information
Part Number
Package
MAAD-007077-000100
Bulk Packaging
MAAD-007077-0001TR
1000 piece reel
MAAD-007077-0001TB
Sample Test Board
Note: Reference Application Note M513 for reel size
information.
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
Pin Configuration
Pin No.
Function
Pin No.
Function
1
GND
17
NC
2
C8
18
NC
3
C4
19
Vcc
4
C2
20
N/C
5
C1
21
Cp
6
GND
22
NC
7
GND
23
Cp
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
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)
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Rev. V5
Electrical Specifications: TA = 25°C, Z0 = 50
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Insertion Loss
—
DC-2.5 GHz
DC-4.0 GHz
dB
dB
—
—
2.0
2.5
2.5
3.0
Attenuation
Accuracy
Individual Bits or
Combination of Bits
DC-2.5 GHz
DC-4.0 GHz
dB
dB
—
—
—
—
±(0.3+4% of atten setting)
±(0.3+6% of atten setting)
VSWR
Full Attenuation Range
DC-2.5 GHz
DC-4.0 GHz
Ratio
Ratio
—
—
1.5:1
1.8:1
1.8:1
2.0:1
Switching Speed
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
ns
ns
—
—
25
4
—
—
1 dB Compression
—
50 MHz
0.5-4.0 GHz
dBm
dBm
—
—
+21
+27
—
—
Input IP3
Two-tone Inputs up to +5 dBm
50 MHz
0.5-4.0 GHz
dBm
dBm
—
—
+35
+48
—
—
Vcc
—
—
V
4.75
5.0
5.25
VIL
VIH
LOW-level input voltage
HIGH-level input voltage
—
—
V
V
0.0
2.0
—
—
0.8
5.0
lin (Input Leakage Current)
Vin = VCC or GND
—
uA
-1.0
—
1.0
Icc4
Vcc min to max, Logic “0” or “1”
—
mA
—
6
10
For guaranteed start-up
—
mA
—
—
125
ΔIcc
(Additional Supply Current
Per TTL Input Pin)
VCC = Max, Vcntrl = VCC - 2.1 V
—
mA
—
—
1.5
Switching Noise
Generated from
DC-DC Converter with
recommended capacitors
3.5 MHz
dBm
—
-93
—
Thermal Resistance θjc
—
—
°C/W
—
15
—
Turn-on Current
5
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 startup.
Recommended PCB Configuration9
Absolute Maximum Ratings 6,7
Parameter
Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 4.0 GHz
+27 dBm
+34 dBm
VCC
-0.5V ≤ VCC ≤ +6.0V
8
2
Vin
-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.
9. Application Note S2083 is available on line at www.macom.com
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Rev. V5
Handling Procedures
Please observe the following precautions to avoid
damage:
Truth Table (Digital Attenuator)
C8
C4
C2
C1
Attenuation
0
0
0
0
Loss, Reference
0
0
0
1
1.0 dB
0
0
1
0
2.0 dB
0
1
0
0
4.0 dB
1
0
0
0
8.0 dB
1
1
1
1
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
0 = TTL Low; 1 = TTL High
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.
Typical Performance Curves
Reference Loss vs. Frequency
Attenuation - 1 dB Bit vs. Frequency
1.3
4.0
3.0
25ºC
85ºC
Attenuation (dB)
Reference Loss (dB)
-40ºC
1.2
2.0
1.0
25ºC
1.1
1.0
0.9
-40ºC
85ºC
0.8
0.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0.0
4.0
0.5
1.0
Attenuation - 2 dB Bit vs. Frequency
2.0
2.5
3.0
3.5
4.0
3.0
3.5
4.0
Attenuation - 4 dB Bit vs. Frequency
2.6
4.6
85ºC
-40ºC
2.4
Attenuation (dB)
Attenuation (dB)
1.5
Frequency (GHz)
Frequency (GHz)
2.2
2.0
-40ºC
4.4
25ºC
4.2
4.0
85ºC
25ºC
1.8
3.8
0.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
3.0
3.5
4.0
0.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
3
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Rev. V5
Typical Performance Curves
Attenuation - 15 dB Attenuation vs. Frequency
Attenuation - 8 dB Bit vs. Frequency
8.6
16.5
-40ºC
25ºC
25ºC
16.0
8.4
Attenuation (dB)
Attenuation (dB)
-40ºC
8.2
85ºC
8.0
15.5
15.0
85ºC
14.5
7.8
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
14.0
4.0
0.0
Frequency (GHz)
1.0
2.0
2.5
3.0
3.5
4.0
VSWR - 1 dB Bit vs. Frequency
2.0
2.0
1.8
1.8
RF1
VSWR
1.6
1.4
1.6
RF1
1.4
RF2
1.2
1.2
RF2
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
1.0
3.5
0.0
4.0
0.5
1.0
VSWR - 2 dB Bit vs. Frequency
2.0
1.8
1.8
VSWR
RF2
RF1
1.4
2.0
2.5
3.0
3.5
4.0
VSWR - 4 dB Bit vs. Frequency
2.0
1.6
1.5
Frequency (GHz)
Frequency (GHz)
VSWR
1.5
Frequency (GHz)
VSWR vs. Frequency
Reference Loss State
VSWR
0.5
1.2
1.6
RF2
1.4
RF1
1.2
1.0
1.0
0.0
0.5
1.0
1.5
2.0
2.5
Frequency (GHz)
3.0
3.5
4.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Frequency (GHz)
4
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
4.0
MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Rev. V5
Typical Performance Curves
VSWR - 15 dB Attenuation vs. Frequency
2.0
2.0
1.8
1.8
1.6
RF1
VSWR
VSWR
VSWR - 8 dB Bit vs. Frequency
RF2
1.4
1.2
1.6
RF2
1.4
RF1
1.2
1.0
1.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Frequency (GHz)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Frequency (GHz)
CSP-1, Lead-Free 4 x 6 mm, 32-lead PQFN†
†
Reference Application Note M538 for lead-free solder reflow
recommendations.
5
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support
4.0
MAAD-007077
Digital Attenuator
15 dB, 4-Bit, TTL Driver, DC-4.0 GHz
Rev. V5
M/A-COM Technology Solutions Inc. All rights reserved.
Information in this document is provided in connection with M/A-COM Technology Solutions Inc ("MACOM")
products. These materials are provided by MACOM as a service to its customers and may be used for
informational purposes only. Except as provided in MACOM's Terms and Conditions of Sale for such products or
in any separate agreement related to this document, MACOM assumes no liability whatsoever. MACOM
assumes no responsibility for errors or omissions in these materials. MACOM may make changes to
specifications and product descriptions at any time, without notice. MACOM makes no commitment to update
the information and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future
changes to its specifications and product descriptions. No license, express or implied, by estoppels or otherwise,
to any intellectual property rights is granted by this document.
THESE MATERIALS ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, RELATING TO SALE AND/OR USE OF MACOM PRODUCTS INCLUDING LIABILITY OR
WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, CONSEQUENTIAL OR
INCIDENTAL DAMAGES, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR
OTHER INTELLECTUAL PROPERTY RIGHT. MACOM FURTHER DOES NOT WARRANT THE ACCURACY
OR COMPLETENESS OF THE INFORMATION, TEXT, GRAPHICS OR OTHER ITEMS CONTAINED WITHIN
THESE MATERIALS. MACOM SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING WITHOUT LIMITATION, LOST REVENUES OR LOST PROFITS,
WHICH MAY RESULT FROM THE USE OF THESE MATERIALS.
6
MACOM products are not intended for use in medical, lifesaving or life sustaining applications. MACOM
customers using or selling MACOM products for use in such applications do so at their own risk and agree to
fully indemnify MACOM for any damages resulting from such improper use or sale.
M/A-COM Technology Solutions Inc. (MACOM) and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice.
Visit www.macom.com for additional data sheets and product information.
For further information and support please visit:
https://www.macom.com/support