AT90-1233 Datasheet, PDF (1/5 Pages) Tyco Electronics – Digital Attenuator, 30 dB, 4-Bit, TTL Driver, DC - 2.5 GHz

AT90-1233
Digital Attenuator
30.0 dB, 4-Bit, TTL Driver, DC-2.5 GHz
Rev. V8
Features
• Attenuation: 2 dB Steps to 30 dB
• Single Positive Supply
• Contains Internal DC to DC Converter
• Integral TTL Driver
• 50 Ohm Impedance
• Test Boards Available
• Tape and Reel Packaging Available
• CSP-1 Package
Functional Schematic
Description
M/A-COM’s AT90-1233 is a GaAs FET 4-Bit digital
attenuator with integral driver. Step size is 2 dB pro-
viding a 30 dB attenuation range. This device is in
an FQFP-N plastic surface mount package. The
AT90-1233 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 AT90-0233.
Pin Configuration³
Ordering Information
Part Number
AT90-1233
AT90-1233TR
AT90-1233-TB
Package
Bulk Packaging
1000 piece reel
Sample Test Board
Note: Reference Application Note M513 for reel size
information.
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Function
GND
C16
C8
C4
C2
GND
GND
NC
NC
NC¹
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
Cp
NC
Cp
NC
VEE²
GND
RF2
GND
NC¹
VEE²
NC
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)
1
ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions • North America Tel: [phone] • Europe Tel: [phone]
is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology
• India Tel: [phone]
• China Tel: [phone]
Visit www.macomtech.com for additional data sheets and product information.
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.