UTF-025 - Teledyne Cougar

Attenuator
5 to 2500 MHz
Technical Data
UTF-025
Features
Description
Pin Configuration
• 35 dB Attenuation Range
The UTF-025 is a thin-film voltagecontrolled RF attenuator that
operates from 5 to 2500 MHz.
Utilizing PIN diodes, attenuation
over frequency typically has ±0.4
to ±0.6 dB flatness over the
complete control voltage range.
On the average, the attenuation
will change roughly 5 dB per 2volt increment. The UTF-025 is
available in either the TO-8
hermetic case or connectorized
TC-1 package.
TO-8F
• < 1.5:1 VSWR
Applications
• Open and Closed Loop Gain
Control
• AGC Circuits
Schematic
RFIN
GROUND
RF
IN
RF
OUT
V+
CONTROL
TC-1
RF IN
RF OUT
V+
Maximum Ratings
RFOUT
Parameter
DC Voltage
Continuous RF Input Power
Operating Case Temperature
Storage Temperature
“R” Series Burn-In Temperature
Weight: (typical) 2.1 grams
Maximum
+18 Volts
+23.0 dBm
–55 to +125°C
–62 to +150°C
+125°C
2
Electrical Specifications
(Measured in 50 Ω system @ +15 VDC nominal)
Symbol
BW
—
—
—
—
—
—
—
—
—
—
Characteristic
Typical
Guaranteed Specifications
TC = 25°C TC = 0 to 50°C TC = –55 to +85°C
Frequency Range
5-2500
Attenuation, Min. (VC = 0 V)
5-500 MHz
33.0
500-1000 MHz
28.0
1000-2000 MHz
23.0
2000-2500 MHz
17.0
Insertion Loss, Max. (VC = +15 V)
5-1000 MHz
2.0
1000-2000 MHz
2.8
2000-2500 MHz
3.5
VSWR (Worst Case In Attenuation
Range)
5-1000 MHz
1.5:1
1000-2000 MHz
1.8:1
Intercept Point
+30
Flatness Over Frequency (Min. to 15 dB)
5-1000 MHz
± 0.4
1000-2000 MHz
± 0.6
(Min. to 20 dB)
5-1000 MHz
± 0.8
Switching Speed (10% to 90%)
75
(ON to OFF or OFF to ON)
Bias Voltage
+15
Bias Current
15
Control Voltage
1 to +15
Control Current
0 to 7
Unit
5-2000
5-2000
MHz
—
—
—
—
—
—
—
—
dB
dB
dB
dB
—
—
—
—
—
—
dB
dB
dB
—
—
—
—
—
—
—
—
dBm
—
—
—
—
dB
dB
—
—
—
—
dB
µs
—
—
—
—
—
—
—
—
VDC
mA
VDC
mA
3
Typical Performance At 25°C Temperature (at +15 VDC unless otherwise noted)
Phase
2.5
0V
2.6V
3.0V
3.5V
50
5V
30
20
7V
15V
10
8
2.0
VSWR
100
Control
Voltage
1.5
5
15V
0V
2.6V
3
2
1
0
500
1000
1500
Frequency, MHz
2000
1.0
2500
0
500
1000
Output VSWR
3.5V
2.6V
1.5
5V
7V 0V
15V
0
500
1000
1500
2000
Attenuation, dB
VSWR
2.0
1.0
15V
7V
5V
3.5V
2.6V
0V
10
20
30
40
50
2500
0
500
1000
Frequency, MHz
0
Attenuation, dB
10
20
30
4
6
8
10 12
Control Voltage, Volts
14
0
2500
2
4
6
8
12
16
Ic
10
Vc
20
30
16
0
4
8
Control Voltage, Volts
Due to RS vs. IF differences in pin diodes used in this product, internal
drive compensation is done to optimize VSWR. This correction can
affect the Attenuation vs. Control Voltage from unit to unit to the extent
shown in the graph.
Switching Time
Control Pulse 0 to –10V
Output Power and Loss
(Input Signal 0 dBm)
Output Power, mW
2
2000
Attenuation
Control Current, mA
0
0
1500
Frequency, MHz
Variations of Attenuation
From Unit-to-Unit at Various
Control Voltages at 1000 MHz
2
0.6
fIN = 5 MHz
0.4
4
0.2
7
0
ON
4
8
12
Control Voltage, Volts
20
16
Distortion Products
(Input Signal 0 dBm)
f = 1000 MHz
–40
50 Microseconds
per Division
OFF
Power Output, mW
Attenuation, dB
Control
Voltage
Attenuation
0
Control
Voltage
Detected RF
2000
Frequency, MHz
2.5
40
1500
5V
3V
3.5V
2500
Loss, dB
Phase, Degrees
Input VSWR
Control
Voltage
200
–50
2nd Harmonic
3rd Order IMD (2 tone)
–70
–80
–90
Sweep Time, microseconds
fIN = 5 MHz
–60
3rd Harmonic
0
10
20
Attenuation Setting, dB
30
4
Product Options
UTF – 025 R
Model Number Prefix
UTFPPF-
Model Number
Screening Option
blank = No Screening required
R = R-Series Screening
For more information on R-Series screening,
see Reliability Screening, Pub. 5963-3240E.
UTFC – 025 – 1
Model Number Prefix
UTFC-
Model Number
Connector Option
For TC-1 case, the only connector option available
is the -1. The -1 option consists of an SMA Female
connector on both the input and output (see note).
Note: No R-Series screening is available in the
TC-1 case as the case is non-hermetic.
5
Case Drawings
TC-1
.820
1.000
RFOUT
RF IN
V+
.460
.890
PRODUCT MARKING
AREA
AGC (IF REQUIRED)
.38
(2) PL
.460
DC INPUT
.500
.350
.310
.890
.350
SMA JACK (FEMALE)
(2) PL
.310
.19
.100
GND
.24
.640
.180
.905
2-56 UNC-2B x .15 DEEP
THREADED INSERT
(4) PL
.250
.095
.570
TYPICAL WEIGHT WITH CONNECTORS = 21.5 GRAMS
NOTES: 1. THE TC-1 CASE IS A NON-HERMETIC CASE.
2. THE ONLY CONNECTOR OPTION AVAILABLE FOR THE TC-1 CASE IS THE –1, SMA FEMALE CONNECTORS AT BOTH INPUT AND OUTPUT PORTS.
NOTES (UNLESS OTHERWISE SPECIFIED):
1. DIMENSIONS ARE SPECIFIED IN INCHES
2. TOLERANCES: xx ± .02
xxx ± .010
Case Drawings
TO-8F
.300
TYP
.175
.017
+.002
- 001
.150
TYP
GROUND
RF OUT
3
4
.150
TYP
1
45
.031
.031
GLASS RING
.060 DIA TYP
(4X)
2
.50
.450
DIA DIA MAX
0.185
±0.015
RF IN
5
CASE
GROUND
CONTROL
V+
.075
APPROXIMATE WEIGHT 2.1 GRAMS
NOTES (UNLESS OTHERWISE SPECIFIED):
1. DIMENSIONS ARE SPECIFIED IN INCHES
2. TOLERANCES: xx ± .02
xxx ± .010
Contact Teledyne Microwave Solutions:
650-691-9800
650-962-6845 fax
Check for updates:
www.teledynemicrowave.com