AT-242 Datasheet, PDF (2/2 Pages) Tyco Electronics – Digital Attenuator, 3 Bit, Single Control 28 dB, 0.5 - 2 GHz

Digital Attenuator, 3 Bit, Single Control, 28 dB, 0.5 - 2 GHz
AT-242
Truth Table
V1
V2
V3
1
1
1
1
0
1
1
1
0
1
0
0
0
1
1
0
0
1
0
1
0
0
0
0
Logic 1 = Vs ± 0.2 V
Logic 0 = 0 ± 0.2C
Attenuation (dB)
Reference I.L.
4
8
12
16
20
24
28
Functional Schematic^{1, 2, 3}
GND V3 GND RF2
8
7
6
5
4
16
8
1
RF1
2
3
4
V2 GND V1
1. V_s = -3 V_DC - 5 V_DC @ 50 µA max.
2. V_s can be applied to RF1 or RF2 through a 10KΩ pull-up resistor.
3. External DC blocking capacitors are required on all RF ports.
4. 39 pF used for data measurement.
Typical Performance Curves
Insertion Loss vs. Frequency
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.1
0.6
1.1
1.5
2.0
2.5
3.0
FREQUENCY (_(GG_Hhz_z)₎
VSWR vs Frequency
7.0
6.0
16 dB Atten.
5.0
4.0
28 dB Atten.
3.0
2.0
1.0
Ins. Loss
0.0
0.1
0.6
1.1
1.5
2.0
2.5
3.0
FREQUENCY (₍G_Gh_Hz_z)₎
Attenuation vs. Frequency
0
-2
-4
-6
-8
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
0.1
0.6
1.1
1.5
2.0
2.5
3.0
FREQUENCY (GHhz)
Attenuation Accuracy vs. Frequency
2.0
1.0
4 dB
0.0
-1.0
8 dB
-2.0
16 dB
-3.0
-4.0
28 dB
-5.0
-6.0
-7.0
0.1
0.6
1.1
1.5
2.0
2.5
3.0
FREQUENCY (₍G_Gh_Hz_z)₎
M/A-COM Division of AMP Incorporated 3 North America: Tel. [phone], Fax [phone] Asia/Pacific: Tel.[phone], Fax [phone]
3 Europe: Tel. [phone], Fax[phone]
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00