AA280
器件描述：GaAs IC 5 Bit Digital Attenuator 0.5 dB LSB DC-2 GHz
器件厂商：ALPHA [Alpha Industries]
文件大小：467.24KB，共5页
Sponsor by e络盟器件资料摘要：
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
a73 Attenuation 0.5 dB Steps to 15.5 dB
with High Accuracy
a73 Low DC Power Consumption
a73 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) BSCPIN 16
PIN 1
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.
Parameter
1
Condition Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
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 Accuracy
3
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 Characteristics
5
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 V
Low
= 0 to 0.2 V @ 20 µA Max.
V
High
= -5 V @ 300 µA Max.
Electrical Specifications at -40°C to +85°C (0, -5 V)
1. All measurements made in a 50 Ω 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”.
Specifications subject to change without notice. 11/00A
GaAs IC 5 Bit Digital Attenuator
0.5 dB LSB DC–2 GHz
Features
a73 Attenuation 0.5 dB Steps to 15.5 dB
with High Accuracy
a73 Low DC Power Consumption
a73 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) BSCPIN 16
PIN 1
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.
Parameter
1
Condition Frequency
2
Min. Typ. Max. Unit
Insertion Loss
3
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 Accuracy
3
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 Characteristics
5
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 V
Low
= 0 to 0.2 V @ 20 µA Max.
V
High
= -5 V @ 300 µA Max.
Electrical Specifications at -40°C to +85°C (0, -5 V)
1. All measurements made in a 50 Ω 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”.