8764C [AVAGO]

RF Coaxial Relay,;


型号：	8764C
厂家：	AVAGO TECHNOLOGIES LIMITED
描述：	RF Coaxial Relay,
文件：	总8页 (文件大小：399K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

Agilent 8762/3/4A,B,C

Coaxial Switches

Product Overview

> 90 dB at 18 GHz for the B model

and > 50 dB at 26.5 GHz for the C

model. All models terminate the

unused port with 50 Ω, a key feature

The 8763A, 8763B, and 8763C

High performance switches for

microwave and RF instrumentation

and systems

(Figure 2) have 4 RF ports with one

internal 50 Ω termination designed

for applications requiring a transfer

for your applications where low SWR switch or a cross switching element.

is required on all ports.

Agilent Technologies offers a versatile

line of multiport coaxial switches. These

50 Ω mechanical-latching switches

come with the performance and relia-

bility that you have come to expect in

Agilent microwave accessories.

Offering excellent electrical and

mechanical performance with broad-

band operation, high isolation, low

SWR, long life, and exceptional

repeatability, these switches are

designed with your applications in

mind. Frequency ranges are available

to 4 GHz and 18 GHz for the A and B

models with SMA connectors and to

26.5 GHz for the C models with APC-

3.5 connectors.

The 8762A, 8762B, and 8762C

(Figure 1) are single-pole double-

throw switches with high isolation,

> 100 dB at 4 GHz for the A model,

Figure 1. Agilent 8762

Figure 2. Agilent 8763

The 8764A, 8764B, and 8764C

(Figure 3) round out the family with

5 RF ports, giving you flexibility to

configure the switch for your specific

needs.

Transfer switching

Reverse signal path

For applications requiring a “transfer

switch,” as shown in Figure 5, an

8763A, B, or C is the ideal choice to

insert a component, such as a filter or

Figure 6 shows how an 8762 and

8764 may be used to provide a

“transceiver” configuration. This

example illustrates how one amplifier

mixer, into a signal path. Another pop- can be used to transmit or receive.

ular use is to switch between a device

under test and a through path for

system calibration. The 8763A,B,C’s

internal load can terminate the device

under test when in the through mode

(up to 1 watt).

Any application where the signal

path direction needs to be reversed

could use this configuration.

Solenoid

Common

drive pin

(+)

drive pin #2

drive pin #1

(-)

Pivot

armature

Signal

out

Signal

Port 4

Port 5

Port 1 Port 2 Port 3

Device

Figure 3. Agilent 8764

Figure 5. Agilent 8763 used as a transfer

switch (equivalent circuit action)

Applications

Multi-source switching

8762

8764

The 8762A, 8762B or 8762C is an

excellent choice for applications

where you require selection of

multiple signal sources, frequency

counters, or signal control devices

such as modulators or filters, or

routing signals from multiple

sources as shown in Figure 4.

Solenoid

drive pin #2

(-)

Solenoid

Common

drive pin

(+)

Solenoid

Common

drive pin

(+)

drive pin #1

drive pin #2

drive pin #1

(-)

Pivot

armature

Pivot

armature

Signal

source A

8762B

Signal

source B

50Ω

To receiver

Figure 4. Multi-source switching

Figure 6. Signal reversal

In addition, the built-in firmware

makes it possible to define often used

switch paths. With the path com-

mand, macros can be designed which

open and close the right solenoids to

select the desired switch port, and

the path may be given a meaningful

name. Remember that only one select

pin should be activated at one time to

prevent rapid cycling of the switch.

Portable and remote applications

Due to their small package size, light

weight, low power consumption, and

high reliability, these switches are

ideal for your portable or remote

applications. The light weight and

repeatability make them well suited

for portable spectrum analyzers and

other portable microwave test equip-

ment. Their 1,000,000 cycle life make

them the ideal candidate for system

design, such as communications

repeaters or remote monitoring sta-

tions that demand minimal mainte-

nance. The switch’s automatic coil

disconnect feature and low current

drain during switching minimize the

amount of power needed for operat-

ing the switches.

Both the 87130A and 70611A provide

position monitoring and reporting,

which make it possible for a program

to determine if all the switches are in

their proper state (position) before the

program continues with testing. A

programmable wake up condition

makes it possible to ensure that the

matrix or switching system starts up

in a predetermined state, to prevent

damage to delicate equipment from

excessive power. This would also be

the state that the system returns to

after a power interruption.

Dedicated switching

For larger switching systems, where

many switches will be used to provide

complex signal routing, a switch driv-

er such as the 87130A or 70611A is

recommended. The 87130A rack-and-

stack switch driver and the MMS-

based 70611A are convenient, flexible

interface bus (GPIB) or modular sys-

tems interface bus (MS-IB) switch

controllers, providing driver circuitry,

indicator readback circuitry and

firmware that makes it easy to

integrate switch components into

a switching system. Controlling the

87130A is simple using either a PC or

workstation based GPIB controller

and Agilent Interactive Test

Accessory cables and adapters make

it easy to quickly get the 8762/3/4

working with the 87130A or 70611A.

Reference literature number 5963-

2038E, Switch Attenuator Driver

Configuration Guide.

For smaller switching needs, the

11713A attenuator/switch controller

provides simple GPIB control for up

to ten 8762/3/4 switches. Connecting

cables can be ordered which make it

easy to connect the switches to the

11713A.

Generator (Agilent-ITG) or Agilent

Visual Engineering Environment

(Agilent VEE). The 70611A gives

manual control via the MMS user

interface or can also be controlled

via an GPIB equipped PC or

workstation.

Since current is drawn through the

solenoid for these indicator circuits,

inadvertent switching is prevented by

limiting the current to 5 mA. Additional

design information may be required

from the component manufacturer for

the circuits described in Figure 7,

depending upon specific applications.

Agilent Technologies assumes no

responsibility for use of any circuits

described herein, and makes no repre-

sentations or warranties, expressed or

implied, that such circuits are free

from patent infringements.

Remote indication (TTL options excluded)

The position of the switch may be

determined by utilizing the open and

closed states of the internal coil con-

tacts. Figure 7 displays two indicator

circuits, one to provide a TTL output

and one that directly activates an

LED. The circuits will output a TTL

“HI” and LED “on” if the switch is in

the state shown in Figure 7. When

drive pin 1 contact is closed (as

shown), RF port 2 is connected to

common port. For the Agilent 8763/4,

see Figures 2, 3, and Table 1 for cor-

responding RF port connections. The

circuits shown are designed to oper-

ate with coil voltage of 24 V. If other

voltage switches are used, the circuit

components must be modified to

accommodate that voltage.

Operation and use

How the switch works

All the switches are “break before

make;” the switched ports are not

connected to each other preventing

possible damage to sensitive circuits.

The standard configuration switch

uses 24 Vdc for the switching voltage,

Option 876xx-011¹specifies a voltage

of 5 Vdc, and Option 876xx-015 speci-

fies 15 Vdc. Options 876xx-T15 and

876xx-T24 are TTL/5V CMOS compati-

ble with 15 Vdc and 24 Vdc drive

respectively.

Driving the switch

For standard, Options 876xx-011 and

876xx-015 switches, switching is

accomplished by applying the supply

voltage to pin “C” and grounding the

appropriate pin to actuate the switch-

ing mechanism. Avoid grounding both RF

path select pins as rapid cycling may

occur. After the switch is fully latched

(30 ms), the drive current is automat-

ically disconnected. If the drive cir-

cuit is pulsed, the pulse duration

must be at least 30 ms to ensure that

the switch will fully latch. For TTL/5

volt CMOS compatible drive (Options

876xx-T24 and 876xx-T15), apply the

supply voltage to pin “C,” and ground

to pin #1. Switch positions by apply-

ing a TTL “high” or TTL “low” to pin

#2 as needed. See Table 1.

Figure 7. TTL and LED remote indicator circuits

1. Where xx = 2A, 3A, 4A, 2B, 3B, 4B, 2C, 3C, or 4C.

Standard drive

TTL drive¹

Model number

8762A/B/C

Pin 1

Pin 2

Pin 2²

RF path

Ground

Open

TTL high

1 to C closed

2 terminated

Ground

Open

TTL low

TTL high

TTL low

2 to C closed

1 terminated

8763A/B/C

8764A/B/C

Ground

Open

1 to 2 closed

3 to 4 closed

Ground

1 terminated

2 to 3 closed

4 open

Ground

Open

TTL high

TTL low

1 open

2 to 3 closed

4 to 5 closed

Ground

1 to 2 closed

3 to 4 closed

5 open

Table 1. Switching logic table

7.0V

Absolute max input

HIGH

LOW

Minimum on state

Maximum off state

3.0V

0.4V

0.0V

Figure 8. Control voltage states

1. Pin 1 is always at ground.

2. See Figure 8 for control voltage states.

Specifications

Agilent model numbers

8762A

8763A

8764A

8762B

8763B

8764B

8762C

8763C

8764C

Frequency range

Insertion loss

dc to 4 GHz

dc to 18 GHz

dc to 26.5 GHz

< 0.20 dB, dc to 2 GHz

< 0.25 dB, 2 to 4 GHz

< 0.20 dB, dc to 2 GHz

< 0.50 dB, 2 to 18 GHz

< 0.25 dB, dc to 2 GHz

< 0.50 dB, 2 to 18 GHz

< 1.25 dB, 18 to 26.5 GHz

Isolation

between ports

> 100 dB, dc to 4 GHz

> 90 dB, dc to 18 GHz

> 50 dB, 18 to 26.5 GHz

SWR through line

< 1.10, dc to 2 GHz

< 1.20, 2 to 4 GHz

< 1.10, dc to 2 GHz

< 1.20, 2 to 12.4 GHz

< 1.30, 12.4 to 18 GHz

< 1.15, dc to 2 GHz

< 1.25, 2 to 12.4 GHz

< 1.40, 12.4 to 18 GHz

< 1.80, 18 to 26.5 GHz

Into internal

50Ω load

(8762s and 8763s)

< 1.10, dc to 2 GHz

< 1.20, 2 to 4

< 1.10, dc to 2 GHz

< 1.20, 2 to 12.4 GHz

< 1.15, dc to 2 GHz

< 1.25, 2 to 12.4 GHz

< 1.30, 12.4 to 18 GHz

< 1.80, 18 26.5 GHz

Connectors

SMA (f)

3.5 mm (f)

Insertion loss repeatability

dc to 18 GHz

18 to 26.5 GHz

0.03 dB maximum

0.5 dB maximum

(Up to 1,000,000 cycles measured at 25 °C)

General operating data

Maximum power rating

Life

1 watt average; 100 watts peak (not to exceed average power rating); +7 Vdc

1,000,000 cycles minimum

Switching solenoid

Switching speed 30 ms maximum

Switch drive data

Parameter

Test conditions

Minimum

Nominal

Maximum

Units

Supply voltage

Option 876xx-024 or 876xx-T24

Options 876xx-015/876xx-T15

Option 876xx-011

4.5

Supply current

Option 876xx-024 or 876xx-T24 @ Vcc = 24 Vdc

Switching; pulse width ≥ 30 ms maximum

120

182

400

Option 876xx-015/876xx-T15 @ Vcc = 15 Vdc

Option 876xx-011

@ Vcc = 5 Vdc

Impedance

Option 876xx-024 or 876xx-T24

200

127

ohm

Option 876xx-015, Option 876xx-T15

Option 876xx-011

Options 876xx-T15 and 876xx-T24

High-level input

Low-level input

0.4

Max high input current

Vcc = Max

300

µA

V_input= 7.0 Vdc

V_input= 0.0

V_input= 7.0

Supply current (quiescent)

2.0

µA

Environmental

Operating

temperature

–25 to +75 °C

Humidity

95% RH, 40 °C,

5 days

Vibration

0.05”,

10 to 55 Hz

Shock

50 g's,

3 ms

Physical specifications

Dimensions:

Weight:

Per Figure 9

245 g (9 oz.)

Dimensions in millimeters and (inches)

Figure 9. Product outlines

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8764C [AVAGO]

相关型号：

8764C-011

8764C-024

87654-301

87654-302

87654-302LF

87654-303

87654-303LF

87655-0004

87655-0005

87655-0007

87655-302

87655-303