ALPHA AT006N3-93

GaAs 30 dB IC Voltage Variable Dual
Control Attenuator DC–8 GHz
AT006N3-93
Features
-93
■ Dual Control Voltages
0.160
■ Low Insertion Loss
0.140
■ Broadband DC–8 GHz
0.100
■ Small Low Cost “Chip on Board” Package
0.060
Description
0.020
0.000
0.140
0.056
0.000
The AT006N3-93 GHz GaAs FET IC non-reflective
bridged “T” attenuator provides up to 30 dB of “nonreflective” attenuation. The control voltage requirements
are 0 to -5 V.
This attenuator has two independent voltage controls,
which must be adjusted in a prescribed manner to obtain
the desired attenuation under non-reflective conditions.
Refer to the Application Notes section, “Dual Voltage
Controlled VVA.”
Applications for these fast attenuators are AGC circuits
and variable level control in various military and
telecommunications systems.
Electrical Specifications at 25°C
Parameter1
Insertion
Frequency4
Loss2
Min.
DC–2.0 GHz
DC–4.0 GHz
DC–6.0 GHz
DC–8.0 GHz
Attenuation Range
DC–2.0 GHz
DC–4.0 GHz
DC–6.0 GHz
DC–8.0 GHz
VSWR (I/O)
DC–2.0 GHz
DC–4.0 GHz
DC–8.0 GHz
30
29
26
24
Typ.
Max.
Unit
0.8
1.0
1.2
1.9
1.0
1.2
1.4
2.0
dB
dB
dB
dB
35
33
30
28
dB
dB
dB
dB
1.25:1
1.40:1
1.50:1
1.3:1
1.5:1
1.6:1
Typ.
Max.
Operating Characteristics at 25°C
Parameter
Condition
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
On, Off (50% CTL to 90/10% RF)
Video Feedthru3
Input Power for 1 dB Compression
For All Attenuation Levels
Control Voltages
VLow = 0 to -0.2 V @ 20 µA Max.
VHigh = -5 V @ 50 µA Max.
Frequency
0.5–6 GHz
0.05 GHz
Min.
Unit
7
10
20
ns
ns
mV
0
-3
dBm
dBm
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.
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
1
GaAs 30 dB IC Voltage Variable Dual Control Attenuator DC–8 GHz
AT006N3-93
Typical Transfer Curve
F = 1 GHz, VP1 = -3.5 V
50
-1.0
Attenuation (dB)
V1 V2 Control Voltages (V)
0
V1 (Series)
-2.0
-3.0
V2 (Shunt)
10
15
20
25
30
35
1
2
3
4
5
6
8
Frequency (GHz)
Relative Attenuation vs. Control Voltages
Attenuation (By State) vs. Frequency
Absolute Maximum Ratings
20
Characteristic
15
RF Input Power (RF In)
10
Control Voltage (VC)
5
Value
10 mW > 500 MHz
4 mW @ 50 MHz
+0.2 V, -10 V
Operating Temperature (TOP)
-40°C to +90°C
Storage Temperature (TST)
-65°C to +150°C
Thermal Resistance (ΘJC)
25°C/W
0
-5
0
5
10
15
20
25
30
-93
Attenuation (dB)
0.160
0.150
Attenuation vs. 1.0 dB Compression Point
0.130
0.140
0.112
0.110
0.090
Pin Out
0.070
GND
0.140
GND
0.121
V1
0.020
0.010
0.000
0.102
GND
0.038
V2
0.050
0.030
0.020
RF
0.048
0.000
GND
RF
Glass
2
7
Relative Attenuation (dB)
F = 50 MHz
PIN at 1.0 dB Compression (dBm)
20
0
DC
-5.0
5
30
10
-4.0
0
40
Pt/Pd/Au
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