AT-242 Tyco Electronics, AT-242 Datasheet - Page 2

• Manufacturer Part Number: AT-242
• Description: Digital Attenuator/ 3 Bit/ Single Control 28 dB/ 0.5 - 2 GHz
• Manufacturer: Tyco Electronics

Digital Attenuator, 3 Bit, Single Control, 28 dB, 0.5 - 2 GHz
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
Truth Table
Logic 1 = Vs ± 0.2 V
Logic 0 = 0 ± 0.2C
Typical Performance Curves
V1
1
1
1
1
0
0
0
0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.1
0.1
Insertion Loss vs. Frequency
VSWR vs Frequency
V2
1
0
1
0
1
0
1
0
0.6
0.6
16 dB Atten.
28 dB Atten.
FREQUENCY (Ghz)
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
FREQUENCY (Ghz)
1.1
1.1
V3
1
1
0
0
1
1
0
0
1.5
1.5
(GHz)
(GHz)
Attenuation (dB)
Reference I.L.
2.0
2.0
Ins. Loss
12
16
20
24
28
4
8
2.5
2.5
3.0
3.0
Functional Schematic
1. V
2. V
3. External DC blocking capacitors are required on all RF ports.
4. 39 pF used for data measurement.
-1.0
-2.0
-3.0
-4.0
-5.0
-6.0
-7.0
2.0
1.0
0.0
-10
-12
-14
-16
-18
-20
-22
-24
-26
-28
-30
-2
-4
-6
-8
s
s
0
0.1
= -3 V
can be applied to RF1 or RF2 through a 10K
0.1
Attenuation vs. Frequency
Attenuation Accuracy vs. Frequency
DC
- 5 V
0.6
RF1
0.6
GND
DC
8
1
@ 50 µA max.
8
FREQUENCY (Ghz)
1.1
1.1
FREQUENCY (Ghz)
V2
V3
7
2
4
GND
GND
1, 2, 3
1.5
1.5
6
3
28 dB
4 dB
16
(GHz)
(GHz)
V1
5
4
RF2
2.0
2.0
8 dB
pull-up resistor.
2.5
2.5
16 dB
AT-242
3.0
3.0
V2.00