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參數(shù)資料
| 型號(hào)： | AT-246TR |
| 英文描述： | Digital Attenuator， 1Bit， Variable Step 10-20dB， DC-3000MHz |
| 中文描述： | 數(shù)字衰減器，變步10 1位為- 20dB，直流3000MHz |
| 文件頁(yè)數(shù)： | 1/2頁(yè) |
| 文件大?。?/td> | 66K |
| 代理商： | AT-246TR |
Digital Attenuator, 1 Bit, Variable Step, 10 - 20 dB, DC - 3000 MHz
AT-246
AT-246
M/A-COM Division of AMP Incorporated
Q
North America: Tel. (800) 366-2266, Fax (800) 618-8883
Q
Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
Q
Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Features
Variable Step (10 - 20 dB) with an External Resistor
Matched Input and Output
Low Intermodulation Product: +53 dBm IP
3
Low DC Power Consumption: 50 μW
Low Cost, Low Profile MSOP 8 Plastic Package
Tape and Reel Packaging Available
MSOP-8
1
Electrical Specifications: T
A
= +25°C
Parameter
Reference Insertion Loss
Attenuation Flatness
1, 2
Digital Attenuator, 1 Bit, Variable Step
10 - 20 dB, DC - 3000 MHz
Test Conditions
Units
dB
dB
dB
Min.
Typ.
0.8
±0.5
±1.5
1.3:1
24
30
20
23
25
54
73
45
55
Max.
1.0
±1.0
±2.0
DC - 3.0 GHz
DC - 1.5 GHz
1.5 - 3.0 GHz
DC - 3.0 GHz
Input Power 50 MHz
Input Power 500 MHz
10% to 90% RF, 90% to 10% RF
50% Control to 90% RF, Control to 10% RF
In-band
Measured Relative 50 MHz
to Input Power
2
500 MHz
Measured Relative 50 MHz
to Input Power
2
500 MHz
VSWR
1 dB Compression
dBm
dBm
μ
S
μ
S
mV
dBm
dBm
dBm
dBm
T
rise
,
T
fall
T
on
,
T
off
T
ransients
IP
2
IP
3
Description
M/A-COM’s AT-246 is a GaAs MMIC matched 1 bit attenuator
in a low cost plastic MSOP-8 package. It is designed to be a
building block for a single step attenuator by placing a resistor
across RF1-RF2. Attenuation levels of 10 to 20 dB with flat
response are achievable from DC to 3 GHz. The AT-246 is
ideally suited for circuits where fast switching, very low power
consumption and low intermodulation products are required.
Typical applications include gain/level and sensitivity control in
radio and cellular equipment, wireless LAN’s, GPS equipment
and other gain/level control circuits.
The AT-246 is fabricated using a mature 1-micron gate length
GaAs MESFET process. The process features full chip passiva-
tion for increased performance and reliability.
Ordering Information
Part Number
AT-246 PIN
AT-246TR
Package
MSOP-8 Lead Plastic
Forward Tape and Reel
1
1. If specific reel size is required, consult factory for part number
assignment.
1.
2.
All measurements in a 50
system unless otherwise specified. Loss varies at 0.003 dB/°C.
For two-tone Input Power up to +5 dBm.
ID PIN
0.193
.010
R
0.118
.020
.020
0.0256
0.118
12°
4X
0.034
0.040
0.008
0.013
12°
4X
0.007
0.0215
3°
1.
Dimensions are in inches.
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