Programmable Attenuators
Model 4205
Digital Attenuator
TTL & USB Control, SMA Connectors
0.2 to 6 GHz
RoHS
MAXIMUM INSERTION LOSS (dB):
Frequency (GHz) 4205-31.5
0.2 - 3.0
3.0 - 6.0
MAXIMUM SWR:
Frequency (GHz) 4205-31.5
4205-63.5
1.80
1.50
1.50
4205-95.5
2.00
1.60
1.90
3.0
4.0
4205-63.5
4.5
6.0
4205-95.5
6.5
8.0
Features
o
Ideal for Automated Test Equipment (ATE), WiMAX,
LTE, WiFi, 3G/4G Fading Simulators, Engineering/
Production Test Lab environments
o
Excellent Solid-state Repeatability & Performance
o
Uninterrupted RF when changing attenuation
values
o
Ruggedized Construction
0.2 - 0.8
0.8 - 5.0
5.0 - 6.0
1.50
1.50
1.70
POWER RATING:
SWITCHING SPEED:
CONTROL LOGIC:
OPERATING VOLTAGE:
TEMPERATURE RANGE:
+23 dBm maximum
1
μsec
maximum
TTL or USB
+5 V @ 50 mA
0°C to + 70°C
Description
Aeroflex / Weinschel's New series of MMIC Digital
Attenuators operates over the 0.2 to 6 GHz frequency range
and is in a variety of attenuation ranges up to 95.5 dB in 0.5
dB steps. These units can be controlled using either
parallel TTL or USB interfaces.
TEST DATA:
Test data can be provided at additional cost.
CONNECTORS:
SMA female connectors - mates nonde-
structively with other SMA connectors per MIL-C-39012,
3.5mm and other 2.92mm connectors.
CONTROL CONNECTOR:
The TTL control connector is an
AMP-Latch 10 pin ribbon cable connector that mates with
AMP P/N 746285-1 (supplied with each unit). The USB is a
5-pin female series B mini socket and mates with most stan-
dard USB 5-pin male series B mini plug connectors.
WEIGHT:
83 g (2.92 oz)
Specifications
NOMINAL IMPEDANCE:
FREQUENCY RANGE:
CELL CONFIGURATIONS:
Model
Number
4205-31.5
4205-63.5
4205-95.5
Attenuation
Range/Steps
(dB)
0 -31.5 / 0.5
0-63.5 / 0.5
0-95.5 / 0.5
Attenuation
Increments
(dB)
0.5, 1, 2, 4, 8, 16
0.5, 1, 2, 4, 8, 16, 32
0.5, 1, 2, 4, 8, 16, 32, 32
50
Ω
0.2 to 6.0 GHz
Control Software Included
ATTENUATION ACCURACY (dB):
dB range
1 to 7.5 dB
8 to 11.5 dB
12 to 31.5
32 to 63.5
64 to 85 dB
86 to 95 dB
4205-31.5
+ 0.5
+ 1.0
+ 1.25
---
---
---
4205-63.5
+ 0.5
+ 1.0
+ 1.25
+ 1.25
---
---
4205-95.5
+ 0.5
+ 1.0
+ 1.25 or 4%
+ 1.25 or 4%
+ 1.25 or 4%
+5%
Aeroflex / Weinschel’s Labview based USB Control Center
Software (AUCS) can also be used in the operation of this
series of digital attenuators. The AUCS will allow the user to
setup, control and perform test and measurements using
these digital attenuators over a standard USB 2.0 commu-
nication interface.
239
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: 5/14/2014
Programmable Attenuators
CONTROL CONFIGURATION:
Units are supplied with both parallel-TTL and USB 2.0 inter-
faces. The mode of operation is determined by the source
of DC power to the unit. NOTE: Do not simultaneously con-
nect DC power to the J4 TTL connector while the USB is
connected.
USING TTL CONTROL:
Each unit is supplied with a
mating 10 pin connector (Amp 746285-1). Refer to Physical
Dimensions for mating connector pin/wiring details. Two
pins are specified for supply voltage and ground. The
remaining pins will accept TTL control signals to activate or
de-activate a particular attenuation cell. A TTL high will
energize a cell to the high attenuation state, whereas a TTL
low will maintain a cell in its zero attenuation state.
USING USB CONFIGURATION:
The USB interface is
compatible with standard USB 2.0 interfaces. In USB mode,
DC power to the attenuator is provided by the host USB
connection. The attenuator operates as a USB CDC device
and accepts simple ASCII text commands. This allows the
unit to be controlled from any system capable of sending
data via a standard COM port-style interface.
PHYSICAL DIMENSIONS:
2X 4-40 UNC-2B
9.0
[.36]
63.5
[2.50]
43.18
[1.700]
4.1[.16]
29.21
[1.150]
17.1
[.68]
8.4
[.33]
9.5
[.38]
10.2
[.40]
9.5
[.38]
5.6
[.22]
4X 2-56 UNC-2B
4.1[.16]
43.18
[1.700]
10.2
[.40]
SEE
VIEW
A
PIN 1
PIN 2
CAGE: 93459
MODEL: 4205-63.5
SERNO: XXXX
0.2-6GHz 0-63.5dB / 0.5dB
63.5
[2.50]
59.18
[2.330]
44.3
[1.75]
47.5
[1.87]
59.18
[2.330]
10.9
[.43]
9.0
[.36]
6.6
[.26]
4X 2-56 UNC-2B
4.1[.16]
2X 4-40 UNC-2B
4.1[.16]
10.9
[.43]
2.2
[.09]
2.2
[.09]
PIN 1
PIN 5
13.8
[.54]
17.1
[.68]
29.21
[1.150]
6.6
[.26]
VIEW
A
SCALE 4 : 1
USB Control Connector J3 Pin Locations:
USB Conn
PIN No. (J3)
1
2
3
4
5
Function
V BUS +5 V
Data-
Data+
ID (NC)
GND
TTL Control Connector J4 Pin Locations:
TTL Conn
PIN No. (J3)
1
2
3
4
5
6
7
8
9
10
4205-31.5
dB (Cell)
0.5
1
2
4
8
16
NC
NC
+5V
GND
4205-63.5
dB (Cell)
0.5
1
2
4
8
16
32
NC
+5V
GND
4205-95.5
dB (Cell )
0.5
1
2
4
8
16
32
32
+5V
GND
NC = Not Connected.
NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified.
240
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: 5/14/2014
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