8767K-015 - Agilent / Hewlett-Packard

Features and description

• Exceptional reliability, long life

(5,000,000 cycles minimum)

• Excellent repeatability

• Compact

• Easy GPIB implementation for

ATE applications

• Single-pole, multiple-throw models

available:

three-throw (8766K)

four-throw (8767K)

five-throw (8768K)

six-throw (8769K)

This Agilent Technologies family of

single-pole, multiple-throw switches

utilizes the same proven technology as

the well known Agilent 849X family

of step attenuators. These products

offer the same rugged reliability, excel-

lent repeatability (typically 0.01 dB to

18 GHz and 0.05 dB to 26.5 GHz), long

life (greater than 5 million switching

cycles), compactness, and broadband

performance as the 849X family. Each

product consists of 2 to 5 solenoid

driven switching sections connected

in series. The solenoid armatures are

held in place with permanent magnets

able to withstand shocks over 10 g’s.

The sections switch within 20 mil-

liseconds, including contact settling

time, which is of importance for auto-

matic test applications. The switches

include self-interrupting contacts

which minimize power consumption

and simplify the driver circuit design

(figure 1). Each model is available

with a wide range of solenoid voltage

choices (24 volts, standard, or option-

ally 5 or 15 volts) to match your prod-

uct or system’s requirements.

Section switching

Figure 1 shows one switching section

schematic. Each section utilizes one

solenoid with dual coil windings, one

coil to switch in the RF connector, and

one coil to switch in the thru line.

With a positive voltage applied to the

common pin, the state (RF connector

or thru line) of a particular section is

determined by connecting its RF con-

nector pin or thru pin to a negative

voltage or ground. Tables 1 through 4

define the pin assignments for the

different switches.

As a section is switched, the internal

contacts of the activated coil open,

thus shutting off current flow. At the

same time, the internal contacts for

the other coil close so that it can be

activated when desired. Figure 1 shows

a section that has been switched to

the RF connector position (note the

closed thru line coil contact). The

switching is “break-before-make” type,

thus a momentary interruption of

the RF signal occurs at switching.

Although all sections can be switched

simultaneously, the attenuator drive

must not allow both pins of the same

section (e.g., section 1, pins 5 and 6)

to be activated concurrently, or else

that section would cycle rapidly. All

terminals are “floating,” so bipolar or

unipolar power supplies may be used.

Agilent 8766/7/8/9K

Microwave Single-Pole Multi-Throw

Switches

Product Overview

dc to 18, 26.5 GHz

Typical driver circuit

Figure 1 shows an economical TTL

compatible driver circuit for a single

switching section utilizing an IC relay

driver and an inverter. A TTL “HI”

input to the driver switches in the RF

connector, while a “LO” will activate

the thru line for that section. This

provides a complementary driver for

the section which assures that only

one solenoid of the pair is activated

at a time. Diode protection is required

to protect the IC from the solenoid

voltage flyback.

Switch position can be indicated

remotely by utilizing the open and

closed states of the internal coil con-

tacts. Figure 1 displays two indicator

circuits, one providing a TTL output

and one that activates an LED. These

circuits will output a TTL “HI” (LED

lamp “ON”) if the RF connector is in

the RF circuit, and will output a TTL

“LO” (LED lamp “OFF”) if the thru

line is in the RF circuit. Since current

is drawn through the coil for these

circuits, inadvertent switching is pre-

vented by limiting the current to 5 mA.

Agilent assumes no responsibility

for the use of any circuits described

herein and makes no representation

or warranties, express or implied,

that such circuits are free from patent

infringement.

GPIB attenuator/switch driver

Employing programmable Agilent

step attenuators and switches in an

automatic test system becomes an

easy task when the Agilent 11713A or

87130A attenuator/switch driver is

specified into the system. The 11713A

has all of the necessary features to

provide GPIB control of up to ten

switching sections of the 8766/7/8/9

series switches (e.g., five 8766s, two

8769s, etc.).

The 11713A includes an integral power

supply (with short circuit protection)

that can simultaneously provide 125

milliamps at 24 volts to all contacts

for control of the atten-uators and

switches, so no external power supply

is needed. Each 11713A is provided

with two (2) plug-in drive cables for

the programmable switches to simplify

connection to the driver.

The 11713A also features convenient

front panel keys so the user can man-

ually activate the individual switch

sections when in the “local” mode.

Switching time for the drivers is less

than 10 milliseconds.

The 87130A is a 3.5 inch high, full

width system II attenuator/switch

driver capable of driving up to 248

bistatic electromechanical switches

or attenuator sections. The 87130A

is controlled over GPIB via standard

commands for programmable instru-

ments (SCPI) commands. The 87130A

has been designed for use in both

ATE switching systems and computer

controlled bench top applications.

More configuration details are available

on the Agilent 11713A and 87130A in

literature number 5963-2038E.

Figure 2

Figure 1

RF Connector

Drive Pin

Internal

Coil Contacts

Thru Line

+Voltage

RF Input

to next

Section

RF to

next Section

or Output

Typical

External

Driver

(e.g., pin 6)

(e.g., pin 5)

(pin 1)

0.13K

+5V

LED Inductor Circuit Attenuator Section

0.62K

4.22K

Drive

Cable

Thru Line

Drive Pin

Internal

Coil

Contacts

Thru Line

To next Section

RF In

Connector

Drive Pin

RF to next

Section

or Output

LED

+5V +24V

TTL Input

Switch Drive Circuit

Inverter

TTL Output

TTL Indicator Circuit

4.22K

0.62K

Inverter

IC Relay Driver

5082-4880 (DM7406N*)

(DM7404N*)

* National Semiconductor

part numbers, also supplied

by other vendors.

Note: Additional circuit

design information may

be required from the

component manufacturers.

(DS75451N*)

Driver

Isolation and insertion loss

Isolation and insertion loss vary with

frequency and depend on the port

selected, as shown in the chart and

tables below. The input connector “C”

is always defined as the connector at

the opposite end of the switch from

the dc drive cable.

The output ports are numbered

sequentially from the input connec-

tor. For example, if an 8768K is being

used, use the 8768K table to read iso-

lation to each port. If port three (the

third connector from the input) is

selected, the isolation to ports 1 and

2 will follow curve A. Isolation to port

4 will follow curve B and isolation to

port 5 will follow curve C. Reading

from figure 3 at 8 GHz, the worst case

isolation to ports 1 and 2 will be 30

dB; to port 4, 45 dB; and to port 5, 65

dB. Note that in selecting ports 1 or

2, isolation to disconnected ports can

be varied by choosing the position of

each section to “thru” or “on.” The

important thing to note is that,

depending on the user’s application,

port assignments can be important to

optimize performance at higher

frequencies.

All isolation tables refer to figure 3.

Specifications

Frequency range: dc to 26.5 GHz all

models or dc to 18 GHz for Option 876xK-002

(SMA connectors)

Maximum SW

Frequency (GHz): dc to 8 8 to 12.4 12.4 to 18 18 to 26.5

8766/7/8K 1.3 1.5 1.6 1.8

8769K 1.3 1.55 1.8 2.05

Figure 3. Isolation curves

Table 1. Agilent 8766K with switch profile and connector and pin assignments

X = Activated viking Isolation curve

cable pin/wire # and Section (see table 3)

color of ribbon pin # ( ) status for port #

Port selected Section 1 Section 2 1 2 1 2 3

6 (2) 5 (13) 8 (5) 7 (11)

YEL VIO GRN VLK

Conn. Thru Conn. Thru

1X X On On – B D

X X On Off – C B

2X X Off On A – B

3X X Off Off A A –

Note: Red wire, pin(1) of viking cable, or brown wire, pin(6) of ribbon cable must be

connected to + 24 voc.

Isolation (dB)

120

100

20 0 2 4 6 8 10 12

Frequency (GHz)

14 16 18 20 22 24

26.5

Table 2. Agilent 8767K with switch profile and connector and pin assignments

X = Activated viking cable pin/wire # Isolation curve

and color or ribbon pin # ( ) Section status (see table 3) for port #

Port selected Section 1 Section 2 Section 3 1 2 3 1 2 3 4

18 (5) 7 (11) 10 (9) 9 (3) 6 (2) 5 (13)

GRN BLK BLU ORN YEL V/0

Conn. Thru Conn. Thru Conn. Thru

X X X On On On – B D E

X X X On On Off – B E D

X X X On Off On – C B C

X X X On Off Off – C C B

2X X X Off On On A – B C

X X X Off On Off A – C B

3X X X Off Off On A A – A

4X X X Off Off Off A A A –

Note: Red wire, pin(1) of viking cable, or brown wire, pin(6) of ribbon

cable must be connected to + 24 voc.

Table 3. Agilent 8768K with switch profile and connector and pin assignments

X = Activated viking cable pin/wire #

and color or ribbon pin # ( ) Section status Isolation curve for port #

Port

selected Section 1 Section 2 Section 3 Section 4 1 2 3 4 1 2 3 4 5

12 (10) 11 (4) 8 (5) 7 (11) 10 (9) 9 (3) 6 (2) 5 (13)

WHT BRN GRN BLK BLU ORN YEL VIO

Conn. Thru Conn. Thru Conn. Thru Conn. Thru

1X X X X On On On On – B D E F

X X X X On On Off On – B E D E

X X X X On Off On On – C B D E

X X X X On Off Off On – C C B C

2X X X X Off On On On A – B D E

X X X X Off On Off On A – C B C

3X X X X Off Off On On A A – B C

4X X X X Off Off Off On A A A – A

5X X X X Off Off Off Off A A A A –

Note: Red wire, pin(1) of viking cable, or brown wire, pin(6) of ribbon

cable must be connected to + 24 voc.

Table 4. Agilent 8769K with switch profile and connector and pin assignments

X = Activated viking cable pin/wire # and Isolation curve

color or ribbon pin # ( ) Section status for port #

Port

selected Section 1 Section 2 Section 3 Section 4 Section 5 1 2 3 4 5 1 2 3 4 5 6

12 (10) 11 (4) 8 (5) 7 (11) 10 (9) 9 (3) 6 (2) 5 (13) 3 (8) 4 (7)

WHT BRN GRN BLK BLU ORN YEL VIO GRY WT/RD

Conn. Thru Conn. Thru Conn Thru Thru Thru Thru Thru

1X X X X On On On On On – B D E F G

X X X X X X On On On Off On – B D F E F

X X X X On On Off On On – B E D E F

X X X X X On Off On On On – C B D E F

X X X X X On Off Off On On – C C B C E

X X X X X X On Off Off Off On – C C C B D

X X X X X On Off Off Off Off – C C C C B

2X X X X X Off On On On On A – B D E E

X X X X X Off On Off On On A – C B C F

X X X X X Off On Off Off Off A – C C C B

3X X X X X Off Off On On On A A – B C E

X X X X X Off Off On Off On A A – A B D

X X X X X Off Off On Off Off A A – C C A

4X X X X X X Off Off Off Off Off A A A – A C

5X X X X X Off Off Off Off Off A A A A – B

6X X X X Off Off Off Off Off A A A A A –

Note: Red wire, pin(1) of viking cable, or brown wire, pin(6) of ribbon cable

must be connected to + 24 voc.

Specifications, continued

Maximum insertion loss

Port 1 0.2 dB +0.05 dB/GHz

Port 2 0.2 dB +0.06 dB/GHz

Port 3 0.2 dB +0.08 dB/GHz

Port 4 0.25 dB +0.095 dB/GHz

Port 5 0.25 dB +0.108 dB/GHz

Port 6 0.25 dB +0.12 dB/GHz

RF input power (max):

1 watt average, 100 watts peak

(10 µs pulse width)

Life (min):

5 million cycles per section

Repeatability:

0.01 dB, typ. to 18 GHz, 0.05 dB, typ. to

26.5 GHz (up to 5,000,000 cycles)

Environmental capabilities

Temperature, operating:

–20°C to +75°C

Temperature, non-operating:

–55°C to +85°C

Altitude, operating:

15,000 ft (4,570 meters)

Altitude, non-operating:

50,000 ft (13,700 meters)

Humidity:

Cycling 5 days, 40°C at 95% RH with

condensation

Shock, operating:

10 g’s, 6 ms, on six sides, three blows

Shock, non-operating:

500 g’s, 1.8 ms, in six directions

Vibration, operating:

5 g’s, 34 to 2000 Hz

EMC:

Radiated interference is within the require-

ments of MIL-STD-461B method RE02,

VDE 0871, and CTSPR Publication 11.

Ordering information

Microwave single-pole multi-throw

switches

8766K Single-pole, three-throw

8767K Single-pole, four-throw

8768K Single-pole, five-throw

8769K Single-pole, six-throw

Options

To add options to a product, use the follow-

ing scheme:

Model: 876xK (x = 6, 7, 8, 9)

Model

options: 876xK-Option 001

876xK-Option 002

Supply voltage (must choose one)

876xK-011 5 V solenoid

876xK-015 15 V solenoid

876xK-024 24 V solenoid (standard option)

RF connectors (must choose one)

876xK-002 SMA female connectors

876xK-004 3.5 mm female (standard option)

DC connectors (must choose one)

876xK-016 16 inch ribbon cable

876xK-060 5 foot dc control cable; 12 pin

“viking” (standard option)

Calibration documentation (optional)

876xK-UK6 SWR and insertion loss data

measured with an automatic

network analyzer with very

small uncertainties; directly

traceable to NIST standards.

Calibration frequencies: 1.5 to

26.5 GHz, every 0.25 GHz.

Other combinations can be created

for your applications; refer to Agilent

Application Note 332-1.

52.83

(2.088)

25.40

(1.00)

19.43

(0.765)

59.94

(2.360)

45.59

(1.795)

8.89 (0.35)

19.43 (0.765)

44.20 (1.740)

8766K

81.53

(3.210)

131.32

(5.170)

30.48

(1.20)

8769K

160.02

(8.300)

76.2

(3.000)

52.83

(2.088)

22.9

(0.90)

11.4

(0.45)

11.4

(0.45)

11.4

(0.45)

7.4 (0.29

8766/7/8

44.5

(1.75)

8769

49.5

(1.95)

25.40

(1.00)

42.80

(1.685)

16.64

(0.655)

83.31

(3.280)

68.96

(2.715)

8.89 (0.35)

8767K

104.9

(4.13)

96.47

(3.798)

70.31

(2.768)

138.38

(5.448)

122.61

(4.827)

8.89 (0.35)

16.64 (0.655)

103.73

(4.084)

25.40

(1.00)

8768K

132.3

(5.21)

68.96

(2.715)

42.80

(1.685)

110.87

(4.365)

95.12

(3.745)

Mechanical information

Net weight: 8766K 8767K 8768K 8769K

178 grams 235 grams 292 grams 349 grams

(6.3 oz) (8.3 oz) (10.3 oz) (12.3 oz)

Mounting position: For any orientation, holes are threaded for a metric screw

(m 3 x 0.5 x 5.1 deep).A

RF connectors: 3.5 mm female (SMA compatible)

Option 876xK-002 SMA (for use only to 18 GHz)

Switching speed: Maximum 20 msec including settling time

Switching Nominal coil

Solenoids Coil voltage currentBimpedance

Standard 24 V 130 mA 185 Ohms

(20 to 30 V) (at 24 V)

Option 876xK-015 15 V 187 mA 80 Ohms

(13 to 22 V) (at 15 V)

Option 876xK-011 5 V 332 mA 17 Ohms

(4 to 7 V) (at 5 V)

B. Current per section; approximately 8 msec duration before internal contacts open the coil circuit.

Accessory provided (except Option 008 and 016): Solenoid drive plug on 5-foot cable included.

(Replacement plug and cable assembly available as part number 8120-2178, except 8769K p/n 5061-0969.)

C. This dimension applies to connectore

on each end of the switch. Connectors

between the ends are 0.05 inches taller.

Figure 4. Dimensions in

millimeters and (inches)

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Product specifications and descriptions in

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Printed in USA, May 30, 2002

5959-7831

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