RoHS
Compliant
Digital Attenuator
3 0 .0 d B , 4 -B it, T T L Driv er, DC -2 .5 G H z
M AAD-0 0 7 0 7 9 -0 0 0 1 0 0
V 2
Functional Schematic
Features
ñ Attenuation: 2 dB Steps to 30 dB
ñ Single Positive Supply
ñ Contains Internal DC to DC Converter
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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 pack-
age. 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.
Pin Configuration3
Pin No.
Function
GND
C16
C8
Pin No.
17
Function
NC
1
2
18
NC
3
19
VCC
4
C4
20
NC
Cp
NC
Cp
NC
5
C2
21
6
GND
GND
NC
22
Ordering Information
7
23
8
24
Part Number
Package
2
9
NC
25
VEE
MAAD-007079-000100
Bulk Packaging
10
11
12
13
14
15
16
NC1
GND
RF1
GND
NC
26
GND
RF2
MAAD-007079-0001TR
MAAD-007079-0001TB
1000 piece reel
27
Sample Test Board
28
GND
29
NC1
Note: Reference Application Note M513 for reel size
information.
Note: Die quantity varies.
2
30
VEE
NC
31
NC
NC
32
VCC
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)
* Restrictions on Hazardous Substances, European Union
Directive 2002/95/EC.
1
M/A-COM Inc. and its affiliates reserve the right to make changes to the
product(s) or information contained herein without notice. M/A-COM makes
no warranty, representation or guarantee regarding the suitability of its
products for any particular purpose, nor does M/A-COM assume any liability
whatsoever arising out of the use or application of any product(s) or
information.
• North America Tel: 800.366.2266 / Fax: 978.366.2266
• Europe Tel: 44.1908.574.200 / Fax: 44.1908.574.300
• Asia/Pacific Tel: 81.44.844.8296 / Fax: 81.44.844.8298
Visit www.macom.com for additional data sheets and product information.