MAAD-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Functional Schematic
Features
Rev. V4
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
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 package. 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.
Ordering Information
Pin No.
Function
Pin No.
Function
1
GND
17
NC
2
C16
18
NC
3
C8
19
VCC
4
C4
20
NC
5
C2
21
Cp
6
GND
22
NC
7
GND
23
Cp
8
NC
24
NC
Part Number
Package
9
NC
25
VEE2
MAAD-007079-000100
Bulk Packaging
10
NC1
26
GND
MAAD-007079-0001TR
1000 piece reel
11
GND
27
RF2
Sample Test Board
12
RF1
28
GND
13
GND
29
NC1
14
NC
30
VEE2
15
NC
31
NC
16
NC
32
VCC
MAAD-007079-0001TB
Note: Reference Application Note M513 for reel size
information.
1
Pin Configuration3
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1. Pins 10 and 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-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V4
Electrical Specifications: TA = 25°C, Z0 = 50
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Insertion Loss
—
DC - 2.5 GHz
dB
—
2.7
3.0
Attenuation Accuracy
Individual Bits or Combination of Bits
DC - 2.5 GHz
dB
—
—
±(.3 +5% of atten setting)
VSWR
Full Range
DC - 2.5 GHz
Ratio
—
1.5:1
1.8:1
Switching Speed
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
—
—
nS
nS
—
—
75
20
150
50
1 dB Compression
—
—
50 MHz
0.5 - 2.5 GHz
dBm
dBm
—
—
+21
+29
—
—
Input IP3
Two-tone inputs up to +5 dBm
50 MHz
0.5 - 2.5 GHz
dB
dB
—
—
+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
Turn-on Current5
For guaranteed start-up
—
mA
—
—
125
ΔIcc
(Additional Supply Current
Per TTL Input Pin)
VCC = Max, Vcntrl = VCC - 2.1 V
—
mA
—
—
1.0
Switching Noise
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 Configuration9
Absolute Maximum Ratings 6,7
Parameter
Absolute Maximum
Max. Input Power
0.05 GHz
0.5 - 2.5 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 C2083 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-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V4
Handling Procedures
Please observe the following precautions to avoid
damage:
Truth Table (Digital Attenuator)
Static Sensitivity
C16
C6
C4
C2
Attenuation
0
0
0
0
Loss, Reference
0
0
0
1
2.0 dB
0
0
1
0
4.0 dB
0
1
0
0
8.0 dB
Moisture Sensitivity
1
0
0
0
16.0 dB
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.
1
1
1
1
30.0 dB
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.
0 = TTL Low; 1 = TTL High
Typical Performance Curves
Insertion Loss
VSWR @ Insertion Loss
O ut p ut
3.00
Inp ut
2.50
1.40
2.00
VSWR
Attenuation (dB)
1.60
1.50
1.20
1.00
0
500
1000
1500
2000
2500
1.00
Fre que ncy (MHz )
0
1000
1500
2000
2500
Fre que ncy (MHz )
Attenuation Error, 2 dB Bit
Attenuation Error, 4 dB Bit
0.30
0.40
0.20
Attenuation (dB)
Attenuation (dB)
500
0.10
0.00
-0.10
0.20
0.00
-0.20
-0.20
-0.40
-0.30
0
3
500
1000
1500
Fre que ncy (MHz )
2000
2500
0
500
1000
1500
2000
Fre que ncy (MHz )
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
2500
MAAD-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V4
Typical Performance Curves
Attenuation Error, 16 dB Bit
Attenuation Error, 8 dB Bit
0.00
Attenuation (dB)
Attenuation (dB)
0.40
0.20
0.00
-0.20
-0.40
-0.20
-0.40
-0.60
-0.80
0
500
1000
1500
2000
2500
0
500
1000
Fre que ncy (MHz )
1500
2000
2500
Fre que ncy (MHz )
Attenuation Error, Max. Attenuation
VSWR, 2 dB Bit
Out p ut
0.50
Inp ut
0.00
1.40
-0.50
VSWR
Attenuation (dB)
1.60
-1.00
1.20
-1.50
0
500
1000
1500
2000
2500
1.00
Fre que ncy (MHz )
0
VSWR, 4 dB Bit
1000
1500
Fre que ncy (MHz )
2000
2500
2000
2500
VSWR, 8 dB Bit
Out p ut
Out p ut
Inp ut
1.60
1.40
1.40
Inp ut
VSWR
VSWR
1.60
1.20
1.20
1.00
1.00
0
4
500
500
1000
1500
Fre que ncy (MHz )
2000
2500
0
500
1000
1500
Fre que ncy (MHz )
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-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V4
Typical Performance Curves
VSWR, 16 dB Bit
VSWR, Maximum Attenuation
Out p ut
Out p ut
Inp ut
1.60
1.40
1.40
VSWR
VSWR
1.60
Inp ut
1.20
1.20
1.00
1.00
0
500
1000
1500
2000
2500
Fre que ncy (MHz )
0
500
1000
1500
2000
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
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
2500
MAAD-007079
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V4
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