150-15-3 - Weinschel Corp.

5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116

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152

4/30/02

Model 150 dc to 18.0 GHz

Model 151 dc to 4.0 GHz

Model 152 dc to 26.5 GHz

Programmable Step Attenuators

For OEM & System Use

Description

The Model 150, 151 and 152 Programmable Step

Attenuators represent the widest variety of programmable

attenuators available. This attenuator design is the result of

an extensive development program and offers long reliable

operation with exceptional accuracy and repeatability.

These attenuators can provide programmable adjustments

of RF signal levels in precise steps of 1 dB, 5 dB, 10 dB, or

with custom steps available. Each attenuator consists of a

cascaded assembly of

switched attenuator cells

(Figure 1). The attenua-

tor elements located in

the attenuator cell are

created by a thin-film

process which provides

exceptional long-term

stability, low power and

temperature coefficients.

This series of uses a reed

switching structure that

provides rapid switching

together with low inser-

tion loss. Other features

include:

o3, 4, and 5 Cell Configurations

oBroadband Frequency Coverage

oHigh Accuracy and Repeatability

oLong Life, 5 Million Cycles Per Cell

PROGRAMMABILITY: In each programmable step

Attenuator, solenoids are used to switch the internal resistor

card of each cell into and out of the circuit. The switching is

activated by the application of a negative control voltage to

the desired pin located in the control connector. Once the

cell is switched, the solenoid is magnetically latched into

position and is able to withstand extreme shock and vibra-

tion. Internal circuitry is included to interrupt the coil current

after switching is complete. This reduces power dissipation

even if power is continuously applied. The switching time for

each cell is rated at 20 msec maximum which includes the

contact settling time.

BROADBAND ACCURACY & LOW SWR: The use of

Weinschel Corporation's proprietary thin-film resistor

process provides these programmable step attenuators with

a high degree of accuracy and the lowest possible SWR

uncertainty (refer to specifications for actual values). This

thin film process permits the construction of circuits which

are truly distributed and without stray reactances, even at

the higher microwave frequencies.

RELIABILITY: Each programmable step attenuator is

composed of 3 to 5 (4 in most models) cells. As with all

mechanical designs, usable life becomes a primary concern

to the user. With this in mind Weinschel Corporation backs

all these attenuators with a rated switch life of 5 million

operations per cell. Standardized testing is also performed

on each programmable step attenuator over its operating

frequency range by a computer controlled Weinschel

Corporation Attenuation Measurement System which is

traceable to NIST standards.

ENVIRONMENTAL: These Model 150 Programmable Step

Attenuators have undergone an extensive environmental

qualification program and have been subjected to

temperature, shock, vibration, and humidity conditions per

MIL-STD-202F. These programmable step attenuators

operate within these specifications at an ambient

temperature of -20° to +75°C. Operating beyond these

limits will adversely affect the accuracy and could damage

the internal circuitry.

For additional information on the 150 Series, visit our website @ www.weinschel.com/programmable.htm

Figue 1. Cell Schematic

5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116

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VOLTAGE MODEL(S)

+ 24 V with 150-XX, 151-XX, 152-XX,

Viking Connector 152A-XX

+ 24 V with 150-XX-1, 151-XX-1, 152-XX-1

Ribbon Cable 152A-XX-1

+ 5 V with 150-XX-2, 151-XX-2, 152-XX-2

Viking Connector 152A-XX-2

+ 5 V with 150-XX-3, 151-XX-3, 152-XX-3

Ribbon Cable 152A-XX-3

Cell 1 Cell 2 Cell 3 Cell 4 Cell 5

ATTN Cells ATTN ATTN ATTN ATTN ATTN

Value No. Bypass Element Bypass Element Bypass Element Bypass Element Bypass Element

11 dB 4 0 dB 1 dB 0 dB 4 dB 0 dB 2 dB 0 dB 4 dB - - - - - -

15 dB 4 0 dB 1 dB 0 dB 8 dB 0 dB 2 dB 0 dB 4 dB - - - - - -

31 dB 5 0 dB 1 dB 0 dB 8 dB 0 dB 2 dB 0 dB 16 dB 0 dB 4 dB

55 dB 4 0 dB 5 dB 0 dB 10 dB 0 dB 20 dB 0 dB 20 dB - - - - - -

62 dB 5 0 dB 2 dB 0 dB 32 dB 0 dB 4 dB 0 dB 16 dB 0 dB 8 dB

70 dB 4 0 dB 10 dB 0 dB 20 dB 0 dB 20 dB 0 dB 20 dB - - - - - -

3 0 dB 10 dB 0 dB 40 dB 0 dB 20 dB - - - - - - - - - - - -

75 dB 4 0 dB 5 dB 0 dB 40 dB 0 dB 20 dB 0 dB 10 dB - - - - - -

90 dB 4 0 dB 10 dB 0 dB 30 dB 0 dB 20 dB 0 dB 30 dB - - - - - -

110 dB 4 0 dB 10 dB 0 dB 40 dB 0 dB 20 dB 0 dB 40 dB - - - - - -

Conn Round 5 6 9 10 7 8 11 12 3 4

PIN # Ribbon 13 2 3 9 11 5 4 10 8 7

Wire Round Violet Yellow Orange Blue Black Green Brown White - - - - - -

Color 3/4 Cell

Round Black White Green Orange Blue WHT/BLK RED/BLK GRN/BLK ORN/BLK BLU/BLK

5 Cell

Ribbon Orange Yellow Blue Brown Purple Black Gray White Orange yellow

Table provides standard attenuation ranges, increments, and cell configurations for all Weinschel Corporation Programmable Step

Attenuators (Models 150, 151, 152, & 152A)

150 Series Cell Configurations...

Specifications

NOMINAL IMPEDANCE: 50 Ω

FREQUENCY RANGE: Model 151: dc to 4 GHz

Model 150: dc to 18 GHz

Model 152: dc to 26.5 GHz

OPERATIONAL VOLTAGE: + 24V Nominal (+20V mini-

mum to +30V maximum) or +5V Nominal (+4V minimum* to

+7V maximum)

*Minimum operating voltage derated to +4.25 V @ 55°C and further

derated to +4.5 V @ 75°C

POWER RATING: 1 watt average, 100 watts peak

TEMPERATURE: -20° to +75°C operating

-55° to +85°C nonoperating

TEMPERATURE COEFFICIENT: < 0.0001 dB/dB/°C

POWER SENSITIVITY: < 0.001 dB/dB/ Watt

RATED SWITCH LIFE: 5 million cycles per cell

RF INPUT CONNECTORS: Rugged female 3.5 mm

connectors which mate nondestructively with SMA male

connectors per MIL-STD-39012.

CONTROL CONNECTOR: 12 pin Viking TKP12-101

connector with 5' cable or 14 conductor 16" ribbon cable

with connector (shown below):

SWITCHING SPEED: 20 msec (includes settling time)

CONTROL PULSE WIDTH: 20 msec (minimum)

SWITCHING CURRENT: 125 mA @ +24V per cell

300 mA @ +5V per cell

REPEATABILITY: +0.01 typical to 18 GHz

+0.05 dB typical to 26.5 GHz

VIBRATION: MIL-STD-202F, Method 204D Cond B

ALTITUDE: MIL-STD-202F, Method 105C Cond B,

50,000 Ft.

SHOCK: MIL-STD -202F, Method 213B Cond B,

except 10G, 6 msec

HUMIDITY: MIL-STD-202F, Method 103B,

Cond. B (96 Hrs. @ 95%, RH)

EMC: Radiated interference is within the requirements of

MIL-STD-461 method RE02, VDE 0871 and CISPR

Publication II.

VOLTAGE/CONNECTOR OPTIONS:

Ribbon Cable Models Round (Viking) Cable Models

5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116

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Frequency Attenuation Setting (dB)

Range (GHz) 5 10 15 20 25 30 35 40 45 50 55

dc-4 0.2 0.3 0.4 0.4 0.4 0.6 0.6 0.7 0.7 0.8 1.0

4-12.4 0.3 0.4 0.5 0.5 0.5 0.7 0.8 0.9 0.9 1.0 1.3

12.4-18 0.4 0.4 0.5 0.5 0.5 0.8 1.0 1.1 1.1 1.2 1.6

18-26.5 0.5 0.5 0.6 0.6 0.6 0.9 1.2 1.4 1.4 1.5 2.0

Model 152-55:

Frequency Attenuation Setting (dB)

Range (GHz) 2 4 6 81012 14161820222426 28 3032

dc-4 0.3 0.3 0.3 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6

4-12.4 0.4 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8

12.4-18 0.5 0.5 0.5 0.6 0.6 0.6 0.8 0.8 0.8 0.8 0.8 1.0 1.0 1.0 1.2 1.2

Model 150/151-62:

Frequency Attenuation Setting (dB)

Range (GHz)343638 404244 46485052545658 60 62

dc-4 0.6 0.6 0.7 0.7 0.7 0.8 0.8 0.8 0.9 0.9 0.9 1.0 1.0 1.0 1.2

4-12.4 1.0 1.0 1.1 1.1 1.3 1.4 1.4 1.4 1.5 1.6 1.6 1.6 1.8 1.8 1.8

12.4-18 1.4 1.4 1.6 1.6 1.8 1.8 2.0 2.0 2.0 2.2 2.2 2.2 2.4 2.4 2.4

Frequency Attenuation Setting (dB)

Range (GHz) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

dc-4 0.2 0.2 0.3 0.3 0.3 0.3 0.4 0.4 0.4 0.4 0.5 0.5 0.5 0.5 0.5

4-12.4 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7

12.4-18 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8

18-26.5 0.5 0.6 0.7 0.8 0.9 0.9 0.9 1.0 1.1 1.1 1.1 1.1 1.1 1.1 1.1

Model 150/151/152-11 & 150/151/152-15:

Frequency Attenuation Setting (dB)

Range (GHz) 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75

dc-4 0.2 0.2 0.4 0.4 0.5 0.5 0.7 0.7 0.9 0.9 1.1 1.1 1.2 1.2 1.4

4-12.4 0.3 0.3 0.6 0.6 0.9 0.9 1.2 1.2 1.5 1.5 1.8 1.8 2.1 2.1 2.1

12.4-18 0.4 0.4 0.8 0.8 1.2 1.2 1.6 1.6 2.0 2.0 2.4 2.4 2.8 2.8 2.8

Model 150/151-75:

Frequency Attenuation Setting (dB)

Range (GHz)102030 405060 708090

dc-4 0.3 0.5 0.6 0.7 0.8 1.0 1.1 1.1 1.2

4-12.4 0.4 0.5 0.7 0.9 1.0 1.3 1.5 1.6 1.7

12.4-18 0.5 0.6 0.8 1.1 1.2 1.4 1.7 1.8 2.1

18-26.5 0.5 0.6 0.9 1.4 1.5 1.8 2.3 2.4 2.8

Model 152-70 & 152-90:

Frequency Attenuation Setting (dB)

Range (GHz) 10 20 30 40 50 60 70 80 90 100 110

dc-4 0.2 0.3 0.5 0.7 0.9 1.0 1.2 1.4 1.6 1.7 1.9

4-12.4 0.4 0.7 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.0

12.4-18 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0 4.0

18-26.5 0.6 0.7 0.9 1.5 1.6 2.2 2.9 --- --- --- ---

Model 150/151-70, 150/151-110, 152A-70:

Frequency Attenuation Setting (dB)

Range (GHz) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

dc-4 0.2 0.2 0.3 0.3 0.3 0.3 0.4 0.4 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.5

4-12.4 0.3 0.3 0.4 0.4 0.5 0.5 0.6 0.6 0.7 0.6 0.7 0.7 0.7 0.7 0.7 0.7

12.4-18 0.5 0.5 0.6 0.6 0.6 0.6 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.

Model 150/151-31:

Frequency Attenuation Setting (dB)

Rang(GHz)171819 202122 23242526272829 30 31

dc-4 0.5 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.8 0.8

4-12.4 0.8 0.8 0.9 0.9 0.9 0.9 0.9 0.9 1.1 1.0 1.0 1.0 1.0 1.1 1.1

12.4-18 0.9 0.9 1.0 1.0 1.0 1.0 1.1 1.1 1.2 1.2 1.2 1.2 1.2 1.3 1.3

MAXIMUM SWR (50 ΩΩCharacteristic Impedance):

Frequency (GHz)

APPLICABLE MODELS dc-4 4-18 18-26.5

151-11, 151-15, 151-31, 151-62, 1.50 - - - - - -

151-75, 151-110

150-11, 150-15, 150-31, 150-62, 1.50 1.90 - - -

150-75, 150-110

151-70 (3 cell) 1.35 - - - - - -

150-70 (3 cell) 1.35 1.70 - - -

152A-70 (3 cell) 1.40 1.70 1.80

152-55, 152-70, 152-90 1.40 1.60 1.80

ATTENUATION ACCURACY (+dB with respect to 0 dB reference):

MAXIMUM INSERTION LOSS (dB):

Frequency (GHz)

APPLICABLE MODELS dc-4 4-18 18-26.5

151-11, 151-15, 151-75, 151-110 0.90 - - - - - -

150-11, 150-15, 150-75, 150-110 0.90 2.20 - - -

151-31, 151-62 (5 cell) 1.10 - - - - - -

150-31, 150-62 (5 cell) 1.10 2.60* - - -

151-70 (3 cell) 0.70 - - - - - -

150-70 (3 cell) 0.70 1.60 - - -

152A-70 (3 cell) 0.90 2.00 2.98

152-55, 152-70, 152-90 0.90 2.00 2.98

*4-12.4 is 1.80, 12.4-18 is 2.60

5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116

web: www.weinschel.com email: sales@weinschel.com

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PHYSICAL DIMENSIONS:

Models 150, 151, & 152:

NOTE: All dimensions are given in mm (inches) and are maximum, unless otherwise specified.

DIM A B C

3 cell 82.6 (3.25) 76.2 (3.0) 104.6 (4.12)

4 cell 110.7 (4.36) 103.6 (4.06) 133.6 (5.25)

5 cell 136.9 (5.39) 129.8 (5.11) 159.5 (6.28)

5305 Spectrum Drive, Frederick, MD 21703-7362 TEL: 301-846-9222, 800-638-2048 Fax: 301-846-9116

web: www.weinschel.com email: sales@weinschel.com

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Frequency Range/ NO. Attenuator Range/Step Size

Voltage/Connector Cells 11/1 dB 15/1 dB 55/5 dB 31/1 dB 62/2 dB 70/10 dB 75/5 dB 90/10 dB 110/10 dB

dc-4 GHz/+24 V/ 4 151-11 151-15 N/A 151-75 N/A 151-110

Viking Connector 3 151-70

5 151-31 151-62

dc-18 GHz/+24 V/ 4 150-11 150-15 N/A 150-75 N/A 150-110

Viking Connector 3 150-70

5 150-31 150-62

dc-26.5 GHz/+24 V/ 4 N/A N/A 152-55 NA 152-70 N/A 152-90 N/A

Viking Connector 3 152A-70-2

dc-4 GHz/+24 V/ 4 151-11-1 151-15-1 N/A 151-75-1 N/A 151-110-1

Ribbon Cable 3 151-70-1

5 151-31-1 151-62-1

dc-18 GHz/+24 V/ 4 150-11-1 150-15-1 N/A 150-75-1 N/A 150-110-1

Ribbon Cable 3 150-70-1

5 150-31-1 150-62-1

dc-26.5 GHz/+24 V/ 4 152-11-1 152-15-1 152-55-1 N/A N/A 152-70-1 N/A 152-90-1 N/A

Ribbon Cable 3 152A-70-1

dc-4 GHz/+5 V/ 4 151-11-2 151-15-2 N/A 151-75-2 N/A 151-110-2

Viking Connector 3 151-70-2

5 151-31-2 N/A

dc-18 GHz/+5 V/ 4 150-11-2 150-15-2 N/A 150-75-2 N/A 150-110-2

Viking Connector 3 150-70-2

5 N/A N/A

dc-26.5 GHz/+5 V/ 4 N/A N/A 152-55-2 N/A N/A 152-70-2 N/A 152-90-2 N/A

Viking Connector 3 152A-70-2

dc-4 GHz/+5 V/ 4 151-11-3 151-15-3 N/A N/A 151-75-3 N/A 151-110-3

Ribbon Cable 3 151-70-3

5 N/A

dc-18 GHz/+5 V/ 4 150-11-3 150-15-3 N/A 150-75-1 N/A 150-110-3

Ribbon Cable 3 150-70-3

5 N/A N/A

dc-26.5 GHz/+5 V/ 4 N/A N/A N/A N/A N/A 152-70-3 N/A 152-90-3 N/A

Ribbon Cable 3 152A-70-3

150 Series Ordering Guide...

OPTIONAL CALIBRATION DATA: Calibration Data is

available at an additional cost for all programmable step

attenuator models. This calibration data is generated using a

computer controlled Weinschel Attenuation Measurement

System. Standard calibration data can be provided in 250

MHz steps for all dc-4 GHz models and in 500 MHz steps for

dc-18 and dc-26.5 GHz models. The measurements are

traceable to NIST Standards.

MODELS WITH BUILT-IN TTL/CMOS INTERFACE\

DRIVER CIRCUIT: Weinschel Corporation now offers new

versions of the 150 series with built-in TTL/CMOS interfaces.

This new generation of intelligent attenuators will greatly sim-

plify as well as provide an economical solution to 150 series

driver problems. Refer to Model 150T, 151T, and 152T data

sheet for more information.

ACCESSORIES