3404T-15

Programmable Attenuators
Models 3404T, 3406T & 3408T
SmartStep® Programmable Attenuators
dc to 6.0 GHz
1 Watt
with built-in Microprocessor-Based Driver
For Use with Weinschel 8210A Controller
CELL CONFIGURATIONS:
Model
Number
Features
o Higher Frequency range to 6 GHz.
o Wide Selection of Attenuation Ranges
& Step Sizes
- 0 to 15 dB in 1 dB steps
- 0 to 55 dB in 1 dB steps
- 0 to 55.75 in 0.25 dB steps
- 0 to 103 dB in 1 dB steps
- 0 to 70 dB in 10 dB steps
o High Quality Construction & Connectors
o Built-In TTL\CMOS Interface Driver Circuitry
o Special Configurations Available Upon Request
Description
This line of intelligent programmable step attenuators with a
built-in digital interface are designed to simplify the control
and integration of these devices into subsystem and bench
applications. This series of Programmable Step Attenuators
is designed for use in automatic test equipment and OEM
systems operating in the dc to 6 GHz frequency range.
These models are available in many standard attenuation
ranges and cell configurations. Each cell contains a doublepole, double-throw relay that provides a minimum loss or
attenuated path for the RF signal.
Microstrip circuitry and special compensation techniques
produce flat attenuation versus frequency characteristics.
The microstrip construction, using thick-film circuit
elements, ensures product uniformity. To minimize RF leakage, the 3400T Series Attenuators are provided with
gold-plated contact areas and feedthrough filters at each
control terminal.
Specifications
NOMINAL IMPEDANCE: 50 Ω
FREQUENCY RANGE: dc to 6.0 GHz
MAXIMUM SWR:
Frequency Range (GHz)
dc - 3
3-6
222
SWR
1.30
1.45
NO. Attenuation
Cells Range/Steps
(dB)
Cell
Increments
(dB)
3404T-15
4
15/1
1, 2, 4, 8
3404T-55
4
55/5
5, 10, 20, 20
3404T-70
4
70/10
10, 20, 20, 20
3406T-55
6
55/1
1, 2, 4, 8, 16, 24
3408T-55.75
8
55.75/0.25
3408T-103
8
103/1
0.25, 0.5, 1, 2, 4, 8,
16, 24
1, 2, 4, 8, 16, 24, 48*
*48 dB cell comprised of two 24 dB cells
INCREMENTAL ATTENUATION ACCURACY:
Frequency
Range (GHz)
dc - 3
3-6
Accuracy
+0.3 dB or 2% whichever is greater
+0.4 dB or 3% whichever is greater
MAXIMUM INSERTION LOSS (dB):
Frequency
Range (GHz)
dc - 3
3-6
3404T-15
3404T-55
3404T-70
3406T-55
3408T-55.75
3408T-103
1.80
2.60
2.60
3.80
3.40
5.00
MONOTONICITY: dc to 6.0 GHz (minimum 1 dB change)
POWER RATING: 1 watt average to 25°C ambient
temperature, derated linearly to 0.25 watt @ 70°C. 50 watts
peak (5 μsec pulse width; 1% duty cycle)
POWER COEFFICIENT: <0.005 dB/dB/watt
RATED SWITCH LIFE: 5 million cycles operations per cell
@ 0 dBm
SWITCHING TIME: 6 msec. maximum at nominal rated
voltage
RELEASE TIME: 5 msec maximum
SWITCHING SPEED: 5 Hz maximum per relay
OPERATING VOLTAGE: +12V (+13V maximum; +9V minimum)
OPERATING CURRENT: 17 mA typical per cell @ +12V
TEMPERATURE RANGE (Operating): -30°C to +70°C
5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116
web: www.aeroflex.com/weinschel s email: weinschel-sales@aeroflex.com
Revision Date: 9/30/2012
Programmable Attenuators
Specifications - Con’t
DRIVER INTERFACE:
Parameter
VIL
Low-level input V:
Specification
-0.5V min, 0.8V max
VIH
IPU
VIN
High-level input V:
2.0V min, 5.25V max
Pullup current:
50 μA min, 400 μA max
Supply Voltage:
+12.0 to +15.0V
IIN
Supply current:
25 mA
ICELL
(digital section)
Supply current:
16.6 mA @ 12V
TEST DATA: Test data is available at additional cost.
CONNECTORS: SMA female connectors per MIL-STD-348
interface dimensions - mate nondestructively with
MIL-C-39012 connectors.
INTERFACE CONNECTOR: 14 pin .025 square post
header on .1 center. Mates with Amp connector 746285-2 or
equivalent.
CONSTRUCTION:
Housing:
Connectors:
Aluminum
Stainless steel body and beryllium
copper contacts.
Control terminals: Brass/Copper, Silver plated
WEIGHT (Typical): 3406T-X:
99 g (3.5 oz)
3408T-X:
135 g (4.8 oz)
PHYSICAL DIMENSIONS:
“A”
“B”
49.9
(1.93)
“C”
“D”
Model No.
3408-X
No. Cells
8
A
136.1 (5.36)
3406-X
6
105.7 (3.66)
93.0 (3.66)
5 EQ SPCS @ 15.20 (.60) = 76.0 (3.00)
98.0 (3.86)
3404-X
4
75.18 (2.96)
62.48 (2.46
3 EQ SPCS @ 15.20 (.60) = 45.72 (1.80)
67.56 (2.66)
NOTE:
B
123.4 (4.86)
C
7 EQ SPCS @ 15.20 (.60) = 106.7 (4.20)
D
128.5 (5.06)
All dimensions are given in mm (inches) and are nominal, unless otherwise specified.
223
5305 Spectrum Drive, Frederick, MD 21703-7362 s TEL: 301-846-9222, 800-638-2048 s Fax: 301-846-9116
web: www.aeroflex.com/weinschel s email: weinschel-sales@aeroflex.com
Revision Date: 9/30/2012