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参数资料
| 型号： | AA280-25 |
| 元件分类： | 衰减器 |
| 英文描述： | 0.3 MHz - 2000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 2 dB INSERTION LOSS-MAX |
| 封装： | PLASTIC, SOIC-16 |
| 文件页数： | 1/5页 |
| 文件大小： | 467K |
| 代理商： | AA280-25 |
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 11/00A
GaAs IC 5 Bit Digital Attenuator
0.5 dB LSB DC–2 GHz
Features
I Attenuation 0.5 dB Steps to 15.5 dB
with High Accuracy
I Low DC Power Consumption
I Low Cost SOIC-16 Plastic Package
SOIC-16
AA280-25
(Previously AD280-25)*
0.158 (4.00 mm)
0.150 (3.80 mm)
0.068
(1.73 mm) MAX.
0.244 (6.20 mm)
0.228 (5.80 mm)
0.049 (1.24 mm)
0.016 (0.41 mm)
0.016 MAX.
(0.41 mm)
x 45
CHAMFER
0.020 (0.51 mm)
0.013 (0.33 mm)
0.050
(1.27 mm) BSC
PIN 16
PIN 1
INDICATOR
0.394 (10.00 mm)
0.386 (9.80 mm)
0.010 (0.25 mm)
0.004 (0.10 mm)
0.0098 (0.25 mm)
0.0075 (0.19 mm)
8 MAX.
Description
The AD280-25 is a 5 bit, GaAs IC FET digital attenuator
in a low cost SOIC-16 package. This attenuator has an
LSB of 0.5 dB and a total attenuation of 15.5 dB.
The AD280-25 is particularly suited where high
attenuation accuracy, low insertion loss and low
intermodulation products are required. Typical applications
include cellular radio, wireless data, wireless local loop and
other gain level control circuits.
Parameter1
Condition
Frequency2
Min.
Typ.
Max.
Unit
Insertion Loss3
DC–0.5 GHz
1.1
1.3
dB
DC–1.0 GHz
1.4
1.7
dB
DC–2.0 GHz
1.7
2.0
dB
Attenuation Range
15.5
dB
Attenuation Accuracy3
DC–1.0 GHz
± (0.2 + 3% of
Attenuation Setting in dB)
dB
DC–2.0 GHz
± (0.4 + 3% of
Attenuation Setting in dB)
dB
VSWR (I/O)4
DC–2.0 GHz
1.4:1
1.8:1
Switching Characteristics5
Rise, Fall (10/90% or 90%/10% RF)
15
nS
On, Off (50% CTL to 90%/10% RF)
25
nS
Video Feedthru
25
mV
Input Power for 1 dB Compression
0.5–2.0 GHz
+24
+29
dBm
0.05 GHz
+17
+22
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0.5–2.0 GHz
+44
+50
dBm
0.05 GHz
+35
+40
dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 A Max.
VHigh = -5 V @ 300 A Max.
Electrical Specifications at -40°C to +85°C (0, -5 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. DC = 300 kHz.
3. Attenuation referenced to insertion loss.
4. Input/Output
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
*Due to conflict with another company’s product numbering system, Alpha’s attenuator products starting with the letters “AD” are being changed to “AA”.
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