MAAD-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Functional Schematic
Features
Rev. V5
Attenuation: 1.0dB Steps to 31dB
Single Positive Supply
Contains internal DC to DC converter
Low DC Power Consumption
Small Footprint, JEDEC Package
Integral TTL Driver
50 ohm Impedance
Lead-Free CSP-1 Package
100% Matte Tin Plating over Copper
Halogen-Free “Green” Mold Compound
260°C Reflow Compatible
RoHS* Compliant Version of AT90-1263
Description
The MAAD-007078 is a GaAs FET 5-bit digital
attenuator with integral TTL driver. Step size is
1.0 dB providing 31 dB total attenuation range. This
device is in an FQFP-N plastic surface mount
package. The MAAD-007078 is ideally suited for use
where accuracy, fast speed, very low power
consumption and low costs are required.
Pin Configuration
For dual supply designs without DC-DC converter
noise, use MAATCC0010.
Ordering Information
Part Number
Package
MAAD-007078-000100
Bulk Packaging
MAAD-007078-0001TR
1000 piece reel
MAAD-007078-0001TB
Sample Test Board
Note: Reference Application Note M513 for reel size
information.
1.
2.
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
3.
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
CP2
6
C1
22
NC
7
GND
23
CP1
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
Pins 10 & 29 must be isolated
The negative voltage Vee is produced internally and
requires a 0.1µF cap to GND. Generated noise is typical of
switching DC-DC Converters.
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-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V5
Electrical Specifications: TA = 25°C, Z0 = 50
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Insertion Loss
—
DC - 3.0 GHz
dB
—
3.5
3.8
Attenuation Accuracy
Individual Bits 1-2-4-8-16 dB
Any Combination of Bits 1 to 31 dB
DC - 3.0 GHz
DC - 3.0 GHz
dB
VSWR
Full Range
DC - 3.0 GHz
Ratio
Switching Speed
50% Cntl to 90%/10% RF
10% to 90% or 90% to 10%
1 dB Compression
—
Input IP3
Two-tone inputs up to +5 dBm
—
50 MHz
0.5 - 3.0 GHz
50 MHz
0.5-3.0 GHz
±(.3 +5% of atten setting)
±(.5 +7% of atten setting)
—
ns
—
dBm
—
dB
—
2.0:1
2.2:1
75
20
+21
+24
+35
+48
150
50
—
—
Vcc
—
—
V
4.75
5.0
5.25
VIL
VIH
LOW-level input voltage
HIGH-level input voltage
—
—
V
0.0
2.0
—
—
0.8
5.0
lin (Input Leakage Current)
Vin = VCC or GND
—
µA
-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
3.5 MHz
dBm
—
-93
—
—
°C/W
—
35
—
Switching Noise
Thermal Resistance θjc
Generated from
DC-DC Converter with
recommended capacitors
—
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.
Absolute Maximum Ratings 6,7
Parameter
Absolute Maximum
Input Power
0.05 GHz
0.5 - 3.0 GHz
+27 dBm
+34 dBm
VCC
-0.5V ≤ VCC ≤ +6.0V
8
Vin
-0.5V ≤ Vin ≤ VCC + 0.5V
Operating Temperature
-40ºC to +85ºC
Storage Temperature
-65ºC to +125ºC
Recommended PCB Configuration 9
6. Exceeding any one or combination of these limits may cause
permanent damage to this device.
7. MACOM 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
2
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-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V5
Handling Procedures
Truth Table (Digital Attenuator)
Please observe the following precautions to avoid
damage:
C16
C8
C4
C2
C1
Attenuation
0
0
0
0
0
Loss, Reference
Static Sensitivity
0
0
0
0
1
1.0 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
0
0
1
0
2.0 dB
0
0
1
0
0
4.0 dB
0
1
0
0
0
8.0 dB
1
0
0
0
0
16.0 dB
1
1
1
1
1
31.0 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.
Typical Performance Curves
VSWR @ Insertion Loss
Insertion Loss
Inp ut
3.0
2.0
2.00
1.00
1.0
0
1000
2000
3000
0
4000
1000
Fre que ncy (MHz )
2000
3000
4000
3000
4000
Frequency (MHz)
Attenuation Error, 1 dB Bit
Attenuation Error, 2 dB Bit
0.3
0.3
0.2
0.2
Error (dB)
Error (dB)
Out p ut
3.00
VSWR
Loss (dB)
4.0
0.1
0
0.1
0
-0.1
-0.1
0
1000
2000
Fre que ncy (MHz )
3000
4000
0
1000
2000
Fre que ncy (MHz )
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-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V5
Typical Performance Curves
Attenuation Error, 8 dB Bit
0.7
0.7
0.5
0.5
Error (dB)
Error (dB)
Attenuation Error, 4 dB Bit
0.3
0.1
0.3
0.1
-0.1
-0.1
0
1000
2000
3000
4000
0
1000
Fre que ncy (MHz )
Attenuation Error, 16 dB Bit
3000
4000
3000
4000
3000
4000
Attenuation Error, Max. Attenuation
1.5
Error (dB)
1.5
Error (dB)
2000
Fre que ncy (MHz )
0.5
-0.5
-1.5
0.5
-0.5
-1.5
0
1000
2000
3000
4000
0
1000
Fre que ncy (MHz )
2000
Fre que ncy (MHz )
VSWR, 1 dB Bit
VSWR, 2 dB Bit
Out p ut
Inp ut
Inp ut
1.8
Out p ut
1.6
1.6
VSWR
VSWR
1.4
1.4
1.2
1.2
1.0
1.0
0
1000
2000
Fre que ncy (MHz )
3000
4000
0
1000
2000
Fre que ncy (MHz )
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
MAAD-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V5
Typical Performance Curves
VSWR, 4 dB Bit
VSWR, 8 dB Bit
Inp ut
Out p ut
Inp ut
1.6
1.4
1.4
Out p ut
VSWR
VSWR
1.6
1.2
1.2
1.0
1.0
0
1000
2000
3000
4000
0
1000
Fre que ncy (MHz )
3000
4000
Fre que ncy (MHz )
VSWR, 16 dB Bit
VSWR, Maximum Attenuation
Inp ut
Inp ut
Out p ut
1.6
1.6
1.4
1.4
Out p ut
VSWR
VSWR
2000
1.2
1.2
1.0
0
1000
2000
Frequency (MHz)
3000
4000
1.0
0
1000
2000
3000
Fre que ncy (MHz )
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
4000
MAAD-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Rev. V5
CSP-1, Lead-Free 4 x 6 mm, 32-lead
†
Reference Application Note M538 for lead-free solder reflow recommendations.
6
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-007078
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 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.
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.
7
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