ALPHA AT002N5-10, AT002N5-01 Datasheet
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com 1
Specifications subject to change without notice. 9/99A
GaAs 50 dB IC Voltage Variable
Dual Control Attenuator DC–3 GHz
Features
■ Dual Control Voltages
■ Low Insertion Loss
■ 7 Lead Hermetic Package
■ Capable of Meeting MIL-STD
Requirements
5
-01
AT002N5-01, AT002N5-10
Description
The AT002N5-01 is a GaAs IC FET absorptive attenuator.
It provides up to 50 dB variable attenuation from
DC–3 GHz under non-reflective conditions. This
attenuator is recommended for fast response AGC circuits
for commercial and high reliability applications. The
AT002N5-10 is the gullwing version of this device for
surface mount applications.
Parameter
1
Frequency
4
Min. Typ. Max. Unit
Insertion Loss
2
DC–1.0 GHz 1.2 1.4 dB
DC–2.0 GHz 1.4 1.8 dB
DC–3.0 GHz 1.7 2.0 dB
Attenuation Range DC–1.0 GHz 50 55 dB
DC–2.0 GHz 48 52 dB
DC–3.0 GHz 45 48 dB
VSWR (I/O) DC–1.0 GHz 1.2:1 1.3:1
DC–2.0 GHz 1.4:1 1.5:1
DC–3.0 GHz 1.6:1 1.8:1
Electrical Specifications at 25°C
0.130 (3.30 mm) TYP.
0.063 (1.60 mm) TYP.
0.45 (1.14 mm) TYP.
0.130 (3.30 mm) TYP.
0.220 (5.59 mm)
0.210 (5.33 mm)
0.268
(6.81 mm)
0.252
(6.40 mm)
0.013 (0.33 mm)
0.007 (0.18 mm)
0.007 (0.18 mm)
0.003 (0.08 mm)
0.065
(1.65 mm)
MAX.
0.160
(4.06 mm)
0.120
(3.05 mm)
0.031
(0.79 mm)
MAX.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. Insertion loss changes by 0.003 dB/°C.
3. Video feedthru measured with 1 ns risetime pulse and 500 MHz bandwidth.
4. DC = 300 kHz.
5. See Quality/Reliability section.
Parameter Condition Frequency Min. Typ. Max. Unit
Switching Characteristics Rise, Fall (10/90% or 90/10% RF) 10 ns
On, Off (50% CTL to 90/10% RF) 15 ns
Video Feedthru
3
20 mV
Input Power for 1 dB Compression For All Attenuation Levels 0.5–3 GHz 0 dBm
0.05 GHz -3 dBm
Control Voltages V
Low
= 0 to -0.2 V @ 20 µA Max.
V
High
= -5 V @ 100 µA Max.
Operating Characteristics at 25°C
GaAs 50 dB IC Voltage Variable Dual Control Attenuator DC–3 GHz AT002N5-01, AT002N5-10
2 Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email sales@alphaind.com • www.alphaind.com
Specifications subject to change without notice. 9/99A
Attenuation (By State) vs. Frequency
Frequency (GHz)
10
DC 1 2 3
20
30
40
50
Attenuation (dB)
60
50 dB ± 4 dB
40 dB ± 2 dB
30 dB ± 1 dB
20 dB ± 0.5 dB
10 dB ± 0.2 dB
Relative Attenuation vs. Control Voltages
Relative Attenuation (dB)
-5.0
DC 2010 30 5040 60
-4.0
-3.0
-2.0
-1.0
V
1
V
2
Control Voltages (V)
0
V1 (Series)
V2 (Shunt)
F = 1 GHz, V
P
1
= 3.5 V
Typical Transfer Curve
Pin Out
J
1
GND
GND
GND
V
2V1
J
2
-10
0.215 (5.46 mm)
0.080 (2.03 mm)
TYP.
0.345 (8.76 mm)
± 0.010 (0.25 mm)
0.268 (6.81 mm)
0.252 (6.40 mm)
0.385 (9.78 mm)
± 0.010 (0.25 mm)
0.060 (1.52 mm) TYP.
0.045 (1.14 mm)
TYP.
0.063
(1.60 mm)
TYP.
0.130 (3.30 mm) TYP.
0.013 (0.33 mm)
0.007 (0.18 mm)
0.030 (0.76 mm)
0.015 (0.038 mm)
0.029
(0.74 mm)
TYP.
0.065 (1.65 mm) MAX.
0.007
(0.18 mm)
0.003
(0.08 mm)
Attenuation vs. 1.0 dB Compression Point
Attenuation (dB)
-5
0105152520 30
0
5
10
15
P
IN
at 1.0 dB Compression (dBm)
20
F = 500 MHz
1. VP= FET pinchoff voltage
Characteristic Value
RF Input Power (RF In) 10 mW > 500 MHz 0/-8 V Control
4 mW 50 MHz -8 V Control
Control Voltage (VC) +0.2 V, -10 V
Operating Temperature (TOP) -55°C to +125°C
Storage Temperature (TST) -65°C to +150°C
Thermal Resistance (ΘJC)25°C/W
Absolute Maximum Ratings
Loading...