PIN Diode Attenuators
- Frequency Range 2 to 18 GHz
- High Levels of Attenuation
- Low Insertion Loss
- Fast Switching Speeds
- Military Screening Options Available
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Rodelco's PIN diode attenuator product line has developed over the past twenty years to allow our customers the option to select their optimum component performance. These PIN diode attenuators cover the frequency range from 2 to 18 GHz with custom products spanning the range from 100 MHz to greater than 26 GHz. Attenuators are available with either voltage controlled or digitally controlled interfaces. These attenuators are available with many different options to allow a certain degree of customization while maintaining the cost advantages of standard products. This line of attenuators has been rigidly qualified under the most demanding military environment.
RODELCO ATTENUATOR PRODUCTS
DIGITALLY CONTROLLED ATTENUATORS - 10 BIT TTL |
| MODEL |
FREQUENCY RANGE (GHz) |
INSERTION LOSS (dB MAX) |
VSWR (MAX) |
FLATNESS AT PROGRAMMED ATTENUATION (+/- dB) |
| |
|
|
|
10 dB |
20 dB |
40 dB |
60 dB |
| DCA 24 |
2.0-4.0 GHz |
2.0 dB |
2.0:1 |
0.3 |
1.0 |
1.7 |
1.8 |
| DCA 48 |
4.0-8.0 GHz |
2.5 dB |
2.0:1 |
0.3 |
1.0 |
1.7 |
1.8 |
| DCA 818 |
8.0-18.0 GHz |
4.0 dB |
2.0:1 |
0.7 |
1.2 |
1.7 |
1.8 |
| ATTENUATION ACCURACY |
0 to 20 dB |
20 to 30 dB |
30 to 40 dB |
40 to 50 dB |
50 to 60 dB |
| DCA 24 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| DCA 48 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| DCA 818 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| SWITCHING SPEED |
ON TIME |
OFF TIME |
| DCA 24 |
500 nsec |
500 nsec |
| DCA 48 |
500 nsec |
500 nsec |
| DCA 818 |
500 nsec |
500 nsec |
| POWER HANDLING |
WITHOUT DEGRADATION |
SURVIVAL |
| DCA 24 |
+13 dBm |
1 Watt CW |
| DCA 48 |
+20 dBm |
1 Watt CW |
| DCA 818 |
+20 dBm |
1 Watt CW |
| POWER SUPPLY |
+12 V TO +15 V |
-12 V TO -15 V |
| DCA 24 |
120 mA |
60 mA |
| DCA 48 |
120 mA |
60 mA |
| DCA 818 |
120 mA |
60 mA |
| TEMPERATURE COEFICIENT OF ATTENUATION= +/- 0.025 dB PER DEGREE C |
| J3 PIN OUTS |
PIN NUMBER |
FUNCTION |
| |
1 |
0.06 dB LSB |
| |
2 |
0.13 dB |
| |
3 |
N/C |
| |
4 |
GROUND |
| |
5 |
0.25 dB |
| |
6 |
0.5 dB |
| |
7 |
1.0 dB |
| |
8 |
2.0 dB |
| |
9 |
4.0 dB |
| |
10 |
8.0 dB |
| |
11 |
16.0 dB |
| |
12 |
32.0 dB |
| |
13 |
+12 TO +15 V |
| |
14 |
-12 TO 15 V |
| |
15 |
N/C |
| CONTROL LOGIC |
TTL LOW IS LOW ATTENUATION
TTL HIGH IS ATTENUATION LEVEL ENABLED |
| VOLTAGE CONTROLLED ATTENUATORS |
| MODEL |
FREQUENCY RANGE (GHz) |
INSERTION LOSS (dB MAX) |
VSWR (MAX) |
FLATNESS AT PROGRAMMED ATTENUATION (+/- dB) |
| |
|
|
|
10 dB |
20 dB |
40 dB |
60 dB |
| VCA 24 |
2.0-4.0 GHz |
2.0 dB |
2.0:1 |
0.3 |
1.0 |
1.7 |
1.8 |
| VCA 48 |
4.0-8.0 GHz |
2.5 dB |
2.0:1 |
0.3 |
1.0 |
1.7 |
1.8 |
| VCA 818 |
8.0-18.0 GHz |
4.0 dB |
2.0:1 |
0.7 |
1.2 |
1.7 |
1.8 |
| ATTENUATION ACCURACY |
0 to 20 dB |
20 to 30 dB |
30 to 40 dB |
40 to 50 dB |
50 to 60 dB |
| VCA 24 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| VCA 48 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| VCA 818 |
|
+/- 0.5 dB |
+/- 0.5 dB |
+/- 1.0 dB |
+/- 1.0 dB |
+/- 1.5 dB |
| SWITCHING SPEED |
ON TIME |
OFF TIME |
| VCA 24 |
500 nsec |
500 nsec |
| VCA 48 |
500 nsec |
500 nsec |
| VCA 818 |
500 nsec |
500 nsec |
| POWER HANDLING |
WITHOUT DEGRADATION |
SURVIVAL |
| VCA 24 |
+13 dBm |
1 Watt CW |
| VCA 48 |
+20 dBm |
1 Watt CW |
| VCA 818 |
+20 dBm |
1 Watt CW |
| POWER SUPPLY |
+12 V TO +15 V |
-12 V TO -15 V |
| VCA 24 |
120 mA |
60 mA |
| VCA 48 |
120 mA |
60 mA |
| VCA 818 |
120 mA |
60 mA |
| TEMPERATURE COEFICIENT OF ATTENUATION= +/- 0.025 dB PER DEGREE C |
| ENVIRONMENTAL |
OPERATING TEMPERATURE: -40° C to +85°C |
| |
STORAGE TEMPERATURE: -54°C TO +125°C |
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HUMIDITY PER MIL-STD-202F, METHOD 103 COND. B |
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TEMPERATURE CYCLING PER MIL-STD-202F, METHOD 107, COND. A |
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ALTITUDE PER MIL-STD-202F, METHOD 105, COND. B |
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VIBRATION PER MIL-STD-202F, METHOD 204, COND. B |
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SHOCK PER MIL-STD-202F, METHOD 213, COND. B |
| OUTLINE DRAWING |
| VOLTAGE CONTROLLED ATTENUATORS |
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|
|
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|
|
|
| MODEL |
DIM "A" |
DIM "B" |
DIM "C" |
DIM "D" |
DIM "E" |
DIM "F" |
DIM "G" |
DIM "H" |
| VCA 24 |
1.67 |
1.80 |
1.475 |
1.200 |
0.10 |
0.30 |
0.44 |
1.23 |
| VCA 48 |
1.40 |
1.30 |
0.800 |
1.140 |
0.30 |
0.08 |
0.50 |
0.95 |
| VCA 818 |
1.25 |
1.25 |
0.650 |
1.050 |
0.30 |
0.10 |
0.50 |
0.75 |
| OUTLINE DRAWING |
| DIGITALLY CONTROLLED ATTENUATORS |
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|
|
|
| MODEL |
DIM "A" |
DIM "B" |
|
|
|
|
| DCA 24 |
0.50 |
1.29 |
|
|
|
|
| DCA 48 |
0.75 |
1.19 |
|
|
|
|
| DCA 818 |
0.75 |
1.00 |
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