参数资料
型号: AD260-85
元件分类: 衰减器
英文描述: 0.3 MHz - 2000 MHz RF/MICROWAVE VARIABLE ATTENUATOR, 2.5 dB INSERTION LOSS-MAX
封装: PLASTIC, SSOP-20
文件页数: 1/3页
文件大小: 61K
代理商: AD260-85
Alpha Industries, Inc. [781] 935-5150
Fax [617] 824-4579 Email sales@alphaind.com www.alphaind.com
1
Specifications subject to change without notice. 10/99A
Parameter
Condition
Frequency
Min.
Typ.
Max.
Unit
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
+27
dBm
0.05 GHz
+20
dBm
Intermodulation Intercept Point (IP3)
For Two-tone Input Power +5 dBm
0.5–2.0 GHz
+45
dBm
0.05 GHz
+33
dBm
Control Voltages
VLow = 0 to 0.2 V @ 20 A Max.
VHigh = -5 V @ 300 A Max.
GaAs IC 5 Bit Digital Attenuator
1 dB LSB DC–2 GHz
Features
I Attenuation 1.0 dB Steps to 31 dB
with High Accuracy
I Low DC Power Consumption
I Low Cost SSOP-20 Plastic Package
SSOP-20
AD260-85
0.012
(0.30 mm)
REF.
0.0256
(0.65 mm)
BSC
0.069
(1.75 mm)
±0.004
(0.10 mm)
0.008 (0.20 mm) MAX.
0.002 (0.05 mm) MIN.
0.010 (0.25 mm)
0.004 (0.090 mm)
8 MAX.
0.030 (0.75 mm)
±0.008 (0.10 mm)
0.078
(2.00 mm)
MAX.
0.283 (7.20 mm)
±0.012 (0.30 mm)
PIN 20
PIN 1
0.209 (5.30 mm)
±0.012 (0.30 mm)
0.307 (7.80 mm)
±0.016 (0.307 mm)
PIN 1
INDICATOR
Description
The AD260-85 is a 5 bit, GaAs IC FET digital attenuator
in a low cost SSOP-20 package. This attenuator has an
LSB of 1 dB and a total attenuation of 31 dB.
The AD260-85 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
Frequency2
Min.
Typ.
Max.
Unit
Insertion Loss3
DC–0.5 GHz
1.5
1.8
dB
DC–1.0 GHz
1.8
2.2
dB
DC–2.0 GHz
2.2
2.5
dB
Attenuation Range
31
dB
Attenuation Accuracy4
DC–1.0 GHz
± (0.2 + 3% of
Attenuation Setting in dB)
dB
DC–2.0 GHz
± (0.4 + 5% of
Attenuation Setting in dB)
dB
VSWR (I/O)
DC–2.0 GHz
1.5:1
1.8:1
Electrical Specifications at 25°C (0, -5 V)
Operating Characteristics at 25°C (0, -5 V)
1. All measurements made in a 50
system, unless otherwise specified.
2. DC = 300 kHz.
3. Insertion loss changes by 0.003 dB/°C.
4. Attenuation referenced to insertion loss.
5. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
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