AT90-1283 Datasheet, PDF (1/6 Pages) Tyco Electronics – Digital Attenuator, 15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz

AT90-1283
Digital Attenuator
15.5 dB, 5-Bit, TTL Driver, DC-3.5 GHz
Rev. V11
Features
• Attenuation: 0.5 dB Steps to 15.5 dB
• 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
Schematic with Off-Chip Components
Description
M/A-COM's AT90-1283 is a GaAs FET 5-bit digital
attenuator with integral TTL driver. Step size is 0.5
dB providing a 15.5 dB total attenuation range. This
device is in an PQFN plastic surface mount
package. The AT90-1283 is ideally suited for use
where accuracy, fast speed, very low power
consumption and low costs are required. For dual
supply designs without switching noise, use AT90-
0283.
Pin Configuration³
Pin No. Function
Pin No. Function
1
GND
17
NC
2
C8
18
NC
3
C4
19
Vcc
Ordering Information
4
C2
20
NC
5
C1
21
Cp
Part Number
AT90-1283
AT90-1283TR
AT90-1283-TB
Package
Bulk Packaging
1000 piece reel
Sample Test Board
6
C0.5
7
GND
8
NC
9
NC
10
NC¹
22
NC
23
Cp
24
NC
25
V_EE2
26
GND
Note: Reference Application Note M513 for reel size
information.
11
GND
12
RF1
13
GND
14
NC
27
RF2
28
GND
29
NC¹
30
V_EE2
15
NC
31
NC
16
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)
1
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is considering for development. Performance is based on target specifications, simulated results,
and/or prototype measurements. Commitment to develop is not guaranteed.
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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.