MAAD-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Features
Rev. V2
Functional Schematic
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
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 attenuation, very low power consumption and low costs are
required.
Pin Configuration1
Ordering Information
Pin No.
Function
Pin No.
Function
1
GND
17
NC
2
C4
18
NC
3
C3
19
NC
4
C2
20
NC
5
C1
21
NC
Part Number
Package
6
C5
22
NC
MAAD-008790-000100
Bulk Packaging
7
GND
23
NC
MAAD-008790-0001TR
1000 piece reel
8
NC
24
NC
Sample Test Board
9
NC
25
NC
2
MAAD-008790-0001TB
Note: Reference Application Note M513 for reel size
information.
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1.
2.
10
NC
26
GND
11
GND
27
RF2
12
RF1
28
GND
13
GND
29
NC2
14
NC
30
Vee
15
NC
31
NC
16
NC
32
+Vcc
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
1
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-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
Electrical Specifications: TA = 25°C, Z0 = 50, VCC = +5.0V, VEE = -5.0V
3.
4.
Parameter
Test Conditions
Frequency
Units
Min
Typ
Max
Operating Power
—
—
dBm
—
—
+20
Reference Insertion Loss
—
DC - 2.0 GHz
2.0 - 4.0 GHz
dB
dB
—
—
—
—
5.0
5.5
Attenuation Accuracy3
Relative to Reference Loss
State
Any Single Bit
Any Combination of Bits
DC - 4.0 GHz
DC - 4.0 GHz
Phase Accuracy
Relative to Reference Loss
State
Any Single Bit
Any Single Bit
Any Combination of Bits
Any Combination of Bits
DC - 2.0 GHz
2.0 - 4.0 GHz
DC - 2.0 GHz
2.0 - 4.0 GHz
deg
deg
deg
deg
—
—
—
—
—
—
—
—
±3º
±5º
±5º
±9º
VSWR
Full Range
DC - 4.0 GHz
Ratio
—
—
1.8:1
Switching Speed
Ton
Toff
Trise
Tfall
1.3 V Cntl to 90% RF
1.3 V Cntl to 10% RF
10% RF to 90% RF
90% RF to 10% RF
—
—
__
__
ns
ns
ns
ns
—
—
—
—
See Table
13
See Table
3
—
—
—
—
1 dB Compression4
Reference State
Reference State
0.05 GHz
0.5 - 4.0 GHz
dBm
dBm
—
—
>+27
>+27
—
—
Input IP3
Two-tone inputs
up to +5 dBm
0.05-4.0 GHz
dBm
—
See Table
—
Input IP2
Two-tone inputs
up to +5 dBm
0.05-4.0 GHz
dBm
—
See Table
—
Vcc
Vee
—
—
—
—
V
V
4.5
-8.0
5.0
-5.0
5.5
-4.5
VIL
VIH
LOW-level input voltage
HIGH-level input voltage
—
—
V
V
0.0
2.0
0.0
5.0
0.8
5.0
lin (Input Leakage Current)
Vin = VCC or GND
—
uA
-1
—
1
Icc
(Quiescent Supply Current)
Vcntrl = VCC or GND
—
uA
—
250
400
ΔIcc
(Additional Supply Current Per
TTL Input Pin)
VCC = Max
Vcntrl = VCC - 2.1 V
—
mA
—
—
1.5
IEE
VEE min to max
Vin = VIL or VIH
—
mA
-1.0
-0.2
—
Thermal Resistance θjc
—
—
°C/W
—
35
—
±(0.3 +3% of atten setting in dB)
±(0.3 +3% of atten setting in dB)
This attenuator is guaranteed monotonic.
1 dB Compression was measured up to +27 dBm, which is the absolute maximum rating for this device.
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-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Absolute Maximum Ratings 5,6
Parameter
Absolute Maximum
Max. Input Power
+27 dBm
VCC
-0.5V ≤ VCC ≤ +7.0V
VEE
-8.5V ≤ VEE ≤ +0.5V
VCC - VEE
-0.5V ≤ VCC - VEE ≤ 14.5V
7
Vin
-0.5V ≤ Vin ≤ VCC + 0.5V
Operating Temperature
-40ºC to +85ºC
Storage Temperature
-65ºC to +125ºC
Rev. V2
Recommended PCB Configuration 8
5. Exceeding any one or combination of these limits may cause
permanent damage to this device.
6. MACOM does not recommend sustained operation near these
survivability limits.
7. Standard CMOS TTL interface, latch-up will occur if logic
signal is applied prior to power supply.
8.
Handling Procedures
Please observe the following precautions to avoid
damage:
Application Note S2083 is available on line at
www.macom.com
Truth Table (Digital Attenuator)
C5
C4
C3
C2
C1
Attenuation
Static Sensitivity
0
0
0
0
0
Loss, Reference
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
0
1
1.0 dB
0
0
0
1
0
2.0 dB
0
0
1
0
0
4.0 dB
0
1
0
0
0
8.0 dB
Moisture Sensitivity
1
0
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
1
31.0 dB
0 = TTL Low; 1 = TTL High
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-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
Typical Performance Curves
Reference Loss vs. Frequency
Attenuation - 1 dB Bit vs. Frequency
7.00
1.20
-40ºC
Attenuation (dB)
Reference Loss (dB)
25ºC
6.00
85ºC
5.00
-40ºC
4.00
1.00
0.90
85ºC
0
1
2
3
4
Frequency (GHz)
5
0
6
1
2
3
4
6
5
6
Attenuation - 4 dB Bit vs. Frequency
2.75
4.75
Attenuation (dB)
2.50
-40ºC
25ºC
-40ºC
25ºC
2.25
2.00
4.50
4.25
4.00
85ºC
85ºC
3.75
1.75
0
1
2
3
4
Frequency (GHz)
5
0
6
Attenuation - 8 dB Bit vs. Frequency
1
2
3
4
Frequency (GHz)
Attenuation - 16 dB Bit vs. Frequency
8.75
17.50
25ºC
-40ºC
25ºC
17.00
Loss (dB)
8.50
8.25
8.00
85ºC
16.50
16.00
85ºC
-40ºC
7.75
15.50
0
4
5
Frequency (GHz)
Attenuation - 2 dB Bit vs. Frequency
Attenuation (dB)
25ºC
0.80
3.00
Attenuation (dB)
1.10
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
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
6
MAAD-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
Typical Performance Curves
Attenuation - 31 dB Attenuation vs. Frequency
Phase - 1 dB Bit vs. Frequency
Relative to Reference Loss State
32.50
6.00
-40ºC
25ºC
25ºC
Phase (Degrees)
Loss (dB)
32.00
31.50
31.00
4.00
2.00
0.00
85ºC
30.50
1
2
3
4
Frequency (GHz)
5
6
Phase - 2 dB Bit vs. Frequency
Relative to Reference Loss State
2
3
4
Frequency (GHz)
5
6
-40ºC
6.00
25ºC
2.00
0.00
-2.00
1
Phase - 4 dB Bit vs. Frequency
Relative to Reference Loss State
Phase (Degrees)
Phase (Degrees)
0
-40ºC
4.00
85ºC
25ºC
4.00
2.00
0.00
-2.00
85ºC
-4.00
-4.00
0
1
2
3
4
Frequency (GHz)
5
0
6
Phase - 8 dB Bit vs. Frequency
Relative to Reference Loss State
1
8.00
-40ºC
Phase (Degrees)
25ºC
3.00
2
3
4
Frequency (GHz)
5
6
Phase - 16 dB Bit vs. Frequency
Relative to Reference Loss State
6.00
Phase (Degrees)
85ºC
-2.00
0
-40ºC
0.00
-3.00
25ºC
-40ºC
4.00
0.00
-4.00
85ºC
85ºC
-8.00
-6.00
0
5
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
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
6
MAAD-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
Typical Performance Curves
Phase - 31 dB Attenuation vs. Frequency
Relative to Reference Loss State
25ºC
-40ºC
2.00
1.80
8.00
VSWR
Phase (Degrees)
12.00
VSWR - Reference State vs. Frequency
4.00
0.00
1.60
RF2
1.40
1.20
85ºC
RF1
1.00
-4.00
0
1
2
3
4
Frequency (GHz)
5
6
VSWR - 1 dB Bit vs. Frequency
0
2
3
4
Frequency (GHz)
5
6
5
6
1.80
RF2
VSWR
1.60
1.40
1.20
RF2
1.60
1.40
1.20
RF1
RF1
1.00
1.00
0
1
2
3
4
Frequency (GHz)
5
6
VSWR - 4 dB Bit vs. Frequency
0
1
2
3
4
Frequency (GHz)
VSWR - 8 dB Bit vs. Frequency
2.00
2.00
1.80
RF1
1.60
1.80
RF2
RF1
VSWR
VSWR
6
2.00
1.80
1.40
RF2
1.60
1.40
1.20
1.20
1.00
1.00
0
6
5
VSWR - 2 dB Bit vs. Frequency
2.00
VSWR
1
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
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-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
Typical Performance Curves
VSWR - 31 dB Attenuation vs. Frequency
VSWR - 16 dB Bit vs. Frequency
2.00
2.00
RF2
1.80
1.60
VSWR
VSWR
1.80
1.40
1.20
RF1
1.60
1.40
1.20
RF1
1.00
RF2
1.00
0
1
2
3
4
Frequency (GHz)
5
6
0
1
2
3
4
Frequency (GHz)
5
Typical Input IP2 and IP3 at Room Temperature9
Attenuation
IP2
IP3
Units
50 MHz
500 MHz
2 GHz
50 MHz
500 MHz
2 GHz
Reference State
50
68
70
39
43
42
dBm
1 dB
50
68
70
39
43
37
dBm
2 dB
50
68
70
39
43
37
dBm
4 dB
50
68
70
37
37
37
dBm
8 dB
50
68
70
37
37
37
dBm
16 dB
50
68
65
31
32
32
dBm
31 dB
50
50
50
31
30
29
dBm
9.
IP2 and IP3 are measured with two-tone inputs F1 and F2 up to +5 dBm with 1 MHz spacing.
Typical Switching Speed at Room Temperature
Testing Condition
Ton
Trise
Units
Ref. State ↔ 1 dB
3.6
3.6
μs
Ref. State ↔ 2 dB
3.6
3.6
μs
Ref. State ↔ 4 dB
3.7
3.7
μs
Ref. State ↔ 8 dB
3.3
3.3
μs
Ref. State ↔ 16 dB
4.5
4.5
μs
Ref. State ↔ 31 dB
30.5
30.5
μs
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
6
MAAD-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
CSP-1, 4 x 6 mm, 32-lead PQFN†
†
Reference Application Note M538 for lead-free solder reflow recommendations.
8
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-008790
Digital Attenuator, Constant Phase
31.0 dB, 5-Bit, TTL Driver, DC - 4.0 GHz
Rev. V2
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.
9
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