AT002N5-00 Datasheet, PDF (1/2 Pages) Alpha Industries – GaAs 50 dB IC Voltage Variable Dual Control Attenuator DC-3 GHz

GaAs 50 dB IC Voltage Variable
Dual Control Attenuator DC–3 GHz
AT002N5-00
Features
s 50 dB Range
s Low Insertion Loss
s Fast Switching
s Meets MIL-STD-883 Screening
Requirements
Description
The AT002N5-00 attenuator provides up to 50 dB variable
attenuation from DC–3 GHz under non-reflective
conditions. Attenuation can be controlled by varying each
of the two control bias voltages from 0 to -5 V. The control
current is less than 100 µA and the attenuator will operate
at 0 dBm with switching time, typically 10 ns. The chip is
configured using two “T” attenuators in the series and two
in parallel. This device may be used with a single bias
(V₁ = 0) but with reduced attenuation and match.
Applications include fast response AGC circuits requiring
high attenuation, such as for radar processing,
instrumentation, and levelers in RF equipment.
Electrical Specifications at 25°C
Insertion Loss
Parameter¹
Attenuation Range
VSWR (I/O)
Chip Outline
1.230
GND
1.076
V1 (ALT.)
V2 (ALT.) GND
0.614 ^J1
0.152
0.000
GND V1
V2
GND
Dimensions indicated in mm.
All bonding pads are 0.1 x 0.1 mm.
Chip thickness = 0.2 mm.
Frequency²
Min.
DC–1.0 GHz
DC–2.0 GHz
DC–3.0 GHz
DC–1.0 GHz
50
DC–2.0 GHz
48
DC–3.0 GHz
45
DC–1.0 GHz
DC–2.0 GHz
DC–3.0 GHz
Typ. Max.
1.2
1.4
1.6
1.8
1.8
2.0
52
50
48
1.3:1
1.5:1
1.8:1
Operating Characteristics at 25°C
Parameter
Condition
Frequency
Min.
Typ.
Max.
Switching Characteristics
Rise, Fall (10/90% or 90/10% RF)
10
On, Off (50% CTL to 90/10% RF)
15
Video Feedthru
20
Attenuation Flatness
0–10
11–20
21–30
31–40
41–50
DC–3 GHz
±0.25
±0.50
±1.00
±2.00
±4.00
Compression Point for all
Attenuation Levels
1.0 dB
> 500 MHz
50 MHz–3 GHz
-4
0
Control Voltages
V_Low = 0 to -0.2 V @ 20 µA Max.
V_High = -5 V @ 100 µA Max.
1. All measurements made in a 50 Ω system, unless otherwise specified.
2. DC = 300 kHz.
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
Specifications subject to change without notice. 3/99A
1.072
J2
0.157
Unit
dB
dB
dB
dB
dB
dB
Unit
ns
ns
mV
dB
dB
dB
dB
dB
dBm
dBm
1