Digital Attenuator, 50 dB, 6-Bit, T T L Driv er
DC - 2 .4 G H z
AT 9 0-1 1 06
V 1 1
Features
CSP-1
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Attenuation: 1 dB Steps to 50 dB
Single Positive Supply
Contains Internal DC to DC Converter
Low DC Power Consumption
Small Footprint, JEDEC Package
Integral TTL Driver
50 ohm Impedance
Description
M/A-COM's AT90-1106 is a GaAs FET 6-bit digital
attenuator with integral TTL driver. Step size is 1 dB
providing a 50 dB total attenuation range. This
device is in a FQFP-N plastic surface mount
package. The AT90-1106 is ideally suited for use
where accuracy, fast speed, very low power con-
sumption and low costs are required. For dual
supply designs without switching noise, use AT90-
0106.
Ordering Information
Pin Configuration
Part Number
Package
Pin No.
Function
Pin No.
Function
AT90-1106
Bulk Packaging
1
2
C16
C8
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
NC
NC
AT90-1106TR
AT90-1106-TB
Tape and Reel (1K Reel)
Units Mounted on Test Board
3
C4
+Vcc2
4
C2
NC
Note: Reference Application Note M513 for reel size
information.
5
C1
CP4
6
C32
GND
NC
NC
Truth Table
7
CP4
C32 C16 C8
C4
C2
C1
Attenuation
8
NC
9
NC
-Vee3
GND
RF2
GND
NC1
0
0
0
0
0
0
0
0
0
0
0
1
Loss, Reference
1.0 dB
10
11
12
13
14
15
16
NC1
GND
RF1
GND
NC
0
0
0
0
1
1
0
0
0
1
0
1
0
0
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
1
0
0
0
0
0
0
2.0 dB
4.0 dB
-Vee 3,5
8.0 dB
NC
NC
16.0 dB
32.0 dB
50.0 dB
NC
+Vcc 2,6
1. Pins 10 & 29 must be isolated
2. Pin 19 must be connected to Pin 32
3. Pin 25 must be connected to Pin 30
4. .01µF cap must be connected between Pins 21 and 23
5. -Vee is produced internally and requires a .1µF cap to
GND. Generated noise is typical of switching DC-DC Converters.
6. +Vcc requires a .1µF cap to GND
0 = TTL Low; 1 = TTL High
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.