AT90-1263
Digital Attenuator
31.0 dB, 5-Bit, TTL Driver, DC-3.0 GHz
Features
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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
CSP-1 Package
Rev. V14
Functional Schematic
Description
M/A-COM's AT90-1263 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 AT90-1263 is ideally suited for use
where accuracy, fast speed, very low power
consumption and low costs are required. For dual
supply designs without DC-DC converter noise, use
AT90-0263.
Pin Configuration
Pin No.
1
2
3
4
5
6
Function
GND
C16
C8
C4
C2
C1
GND
NC
NC
NC
1
GND
RF1
GND
NC
NC
NC
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
Function
NC
NC
Vcc
NC
CP2
NC
CP1
NC
Vee
2
GND
RF2
GND
NC
1
Vee
2
NC
Vcc
Ordering Information
Part Number
AT90-1263
AT90-1263TR
AT90-1263-TB
7
8
Package
Bulk Packaging
1000 piece reel
Sample Test Board
9
10
11
12
13
14
15
16
1.
2.
3.
Note: Reference Application Note M513 for reel size
information.
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)
1
ADVANCED:
Data Sheets contain information regarding a product M/A-COM Technology Solutions
•
North America
Tel: 800.366.2266 •
Europe
Tel: +353.21.244.6400
is considering for development. Performance is based on target specifications, simulated results,
•
India
Tel: +91.80.4155721
•
China
Tel: +86.21.2407.1588
and/or prototype measurements. Commitment to develop is not guaranteed.
Visit www.macomtech.com for additional data sheets and product information.
PRELIMINARY:
Data Sheets contain information regarding a product M/A-COM Technology
Solutions has under development. Performance is based on engineering tests. Specifications are
typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.
M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make
Commitment to produce in volume is not guaranteed.
changes to the product(s) or information contained herein without notice.
MA-COM [ M/A-COM TECHNOLOGY SOLUTIONS, INC. ]
