Digital Attenuator, 0.5 dB LSB, 6-Bit,
Consistent Phase 31.5 dB, DC - 18 GHz
MAAD-011045
Rev. V3
Features
Functional Schematic
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6-Bit, 0.5 dB LSB, 31.5 dB Range
Consistent Phase over All Attenuation States
Integrated CMOS/TTL Compatible Driver
Compatible with 1.8 V, 2.5 V, 3.3 V, 5.0 V CMOS
and 5.0 V TTL Logic Input
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Parallel or Serial (P/S) Control
Low DC Power Consumption
Attenuation Accuracy:
+/-(0.3 + 4% of attenuation setting) dB
Lead-Free 3 mm 20-Lead Package
RoHS* Compliant
1
1
15
1
D1/SERIN
P/S
SEROUT
LLEV
1
2
1
14
1
3
1
13
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VSS
RFIN
VDD
1
4
1
12
RFOUT
GND
51
1
11
GND
Applications
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ISM
Multi Market
Description
The MAAD-011045 is a wide band 6-bit, 0.5 dB step
MMIC digital attenuator in a lead-free 3 mm, 20 lead
surface mount plastic package. The phase is
consistent across all attenuation states. This device
is ideally suited for use where high accuracy, very
low power consumption, and low intermodulation
products are required.
Pin Configuration3
Pin #
1
Pin Name
D1 or SERIN
P/S
Function
0.5 dB Bit or Serial In
Parallel/Serial Selection
Negative Supply
RF Input
2
This attenuator is controlled with either a SPI
compatible serial interface or a 6 bit parallel word.
SEROUT is the SERIN delayed by 6 clock cycles
which can be used in daisy-chain operation.
3
VSS
4
RFIN
5-11
12
13
14
15
16
17
18
19
20
GND
Ground
RFOUT
VDD
RF Output
Positive Supply
Logic Level
LLEV
SEROUT
D6
Serial Output
16 dB Bit Control
8 dB Bit Control
4 dB Bit Control
2 dB Bit or LE
1 dB Bit or Clock
Ordering Information1,2
D5
D4
D3 or LE
D2 or CLK
MAAD-011045-TR0500
MAAD-011045-SMB
500 Piece Reel
Sample Board
1. Reference Application Note M513 for reel size information.
2. All sample boards include 5 loose parts.
3. The exposed pad centered on the package bottom must be
connected to RF, DC, and thermal ground. MACOM
recommends connecting all GND and NC pins to ground.
* Restrictions on Hazardous Substances, compliant to current RoHS EU directive.
1
MACOM 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
DC-0023618