AT-266_1 Datasheet, PDF (1/3 Pages) Tyco Electronics – Digital Attenuator, 1-Bit, 10dB Step, DC-2.0 GHz

Digital Attenuator, 1 Bit, 10 dB Step
DC - 2.0 GHz
Features
• Single 10 dB Step
• Low Loss: 0.3 dB @ 900 MHz
• Low Cost SOT-25 Package
Description
M/A-COM’s AT-266 is a 1 bit, 10 dB step GaAs
MMIC digital attenuator in a low cost SOT-25
surface mount plastic package. The AT-266 is
ideally suited for use where high accuracy, very low
power consumption and low intermodulation
products are required. Typical applications include
radio, wireless LANs, GPS equipment and other
gain/level control circuits.
The AT-266 is fabricated using a mature GaAs
MMIC process featuring full chip passivation for
increased performance and reliability.
Ordering Information
Part Number
AT-266
AT-266TR
Package
Bulk Packaging
1000 piece reel
Note: Reference Application Note M513 for reel size
information.
Absolute Maximum Ratings ^1,2
Parameter
Absolute Maximum
Input Power
50 MHz
500 - 2000 MHz
+27 dBm
+34 dBm
Control Voltage
-8.5 V < Vc < +8 V
Operating Temperature
-40°C to +85°C
Storing Temperature
-65°C to +150°C
1. Exceeding any one or combination of these limits may cause
permanent damage to this device.
2. M/A-COM does not recommend sustained operation near
these survivability limits.
Functional Block Diagram
AT-266
V4
Pin Configuration
Pin No.
1
2
3
4
5
Function
RF1
GND
RF2
V1
V2
Description
RF In/Out
RF Ground
RF In/Out
Control Voltage
Control Voltage
Truth Table ^3,4,5
V1
V2
0
1
1
0
Attenuation State
10 dB
Insertion Loss
3. For positive voltage control, external DC blocking capacitors
are required on all RF ports (pins 1, 2 and 3).
4. Differential voltage, V(state 1) - V(state 0), must be +2.8 V
minimum and less than 8 V.
5. 0 = -8 V to 0.2 V, 1 = -0.2 V to 8 V
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: [phone] / Fax: [phone]
• Europe Tel: [phone] / Fax: [phone]
• Asia/Pacific Tel: [phone] / Fax: [phone]
Visit www.macom.com for additional data sheets and product information.