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AT90-1283_1

更新时间： 2024-11-25 04:33:19
品牌 Logo 应用领域
泰科 - TE 驱动衰减器
页数 文件大小 规格书
4页 222K
描述
Digital Attenuator, 15.5dB, 5-Bit, TTL Driver DC - 3.5 GHz

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AT90-1283_1 数据手册

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Digital Attenuator, 15.5 dB, 5-Bit, T T L Driv er  
DC - 3 .5 G H z  
AT 9 0 -12 8 3  
V 9  
Features  
CSP-1  
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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  
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 FQFP-N 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.  
Ordering Information  
Pin Configuration  
Part Number  
Package  
Pin No.  
Function  
Pin No.  
Function  
AT90-1283  
Bulk Packaging  
1
2
GND  
C8  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
NC  
NC  
AT90-1283TR  
AT90-1283-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
C0.5  
GND  
NC  
NC  
Truth Table  
7
Cp4  
8
NC  
C8 C4  
C2 C1 C0.5  
Attenuation  
9
NC  
-Vee3  
GND  
RF2  
GND  
NC1  
0
0
0
0
0
Loss, Reference  
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
1
0
1
0
0
0
1
1
0
0
0
0
1
0.5 dB  
1.0 dB  
2.0 dB  
4.0 dB  
8.0 dB  
15.5 dB  
-Vee 3,5  
NC  
NC  
NC  
+Vcc 2,6  
1. Pins 10 and 29 must be isolated.  
2. Pin 19 must be connected to Pin 32.  
3. Pin 25 must connect to Pin 30.  
4. A .01 µF cap must be connected between Pins 21 and 23.  
5. -VEE is produced internally and requires a .1 µF cap to GND.  
Generated noise is typical of switching DC-DC Converters.  
6. +VCC requires a .1 µF 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.  
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