SPST Switches | Series 91 and 92

Application Notes for RF Switches

SERIES 91 and 92

Series 91 and 92 switches provide high performance characteristics over a multi-octave range. Series 91 models cover the frequency range of 1 to 18 GHz, while Series 92 models cover the range from 0.2 to 4.0 GHz. These miniature switches measure only 0.75 x 0.69 x 0.38 inches.

Both series use an integrated circuit assembly of up to four PIN diodes mounted in a microstrip transmission line. The circuit configuration is shown below.

RF Schematic Diagram Series 91 and 92 SPST Switches

Application of a positive current to the bias terminal switches the unit OFF since the diodes are biased to a low resistance value. With zero or negative voltage at the bias terminal, the diodes are biased to high resistances and the unit is switched ON. Maximum rise and fall times are less than 10 ns.

SERIES F91 AND F92

The Series F91 and F92 switches are the same as the corresponding Series 91 and 92 models except the units are equipped with integrated drivers, and the dimensions of the units are 0.75 x 0.75 x 0.38 inches. The proper current required to switch the unit ON or OFF is provided by the integral driver which requires +5 and -12 to -15 volt power supplies and is controlled by an external logic signal.

Frequency range (Series 91): 1 to 18 GHz
Frequency range (Series 92): 0.2 to 4 GHz
Low VSWR and Insertion loss
Up to 80 dB isolation
Less than 10 ns rise and fall time
Miniature size, light weight

UNITS With INTEGRATED DRIVERS

Miniature Broadband SPST Switch with Integrated Driver Model F9114A — F9114A

Miniature Broadband SPST Switch with Integrated Driver Model F9214A — F9214A

DRIVERLESS UNITS

Miniature Broadband SPST Switch Model 9114 — 9114

Miniature Broadband SPST Switch Model 9112 — 9112

PERFORMANCE CHARACTERISTICS

FREQUENCY (GHz)

MODEL NO.⁽¹⁾

CHARACTERISTIC

0.2 to 0.5

0.5 to 1.0

1.0 to 2.0

2.0 to 4.0

4.0 to 8.0

8.0 to 12.4

12.4 to 18.0

9112*, F9112A*

Min. Isolation (dB)
Max. Insertion Loss (dB)
Max. VSWR (ON)

—
—
—

36
0.8
1.3

40
0.8
1.3

45
0.9
1.6

45
1.1
1.75

45
1.8
1.75

9114, F9114A

Min. Isolation (dB)
Max. Insertion Loss (dB)
Max. VSWR (ON)

—
—
—

60
0.9
1.4

74
0.9
1.4

80
1.0
1.75

80
1.6
1.75

80
2.5
2.0

9214*, F9214A

Min. Isolation (dB)
Max. Insertion Loss (dB)
Max. VSWR (ON)

40
1.0
1.5

45
1.0
1.5

50
1.0
1.5

—
—
—

*Special-order product. Consult factory before ordering.

9112, F9112A, 9114, F9114A
Switching Speed⁽²⁾
Rise Time ……………………………………..	10 ns max.
Fall Time ………………………………………	10 ns max.
ON Time⁽⁴⁾…………………………………….	20 ns max.
OFF Time⁽⁴⁾…………………………………..	20 ns max.
Repetition Rate⁽⁴⁾……………………………	20 MHz max.

9214, F9214A Switching Speed⁽²⁾
Rise Time ……………………………………..	10 ns max.
Fall Time ………………………………………	10 ns max.
ON Time⁽⁴⁾……………………………………..	40 ns max.
OFF Time⁽⁴⁾……………………………………	40 ns max.
Repetition Rate⁽⁴⁾……………………………	10 MHz max.

Power Supply Requirements

Driverless Units

For rated isolation………………………… +35 mA

For rated Insertion loss…………………. -10V

Units With Integrated Drivers…………….. +5V ±5%, 65 mA

-12 to -15V, 20 mA

Power Handling Capability

Without Performance Degradation

Without integrated drivers……………..

With integrated drivers ………………….

1W cw or peak⁽³⁾

^{1W cw or peak}

Survival Power…………………………………

2W average, 75W peak (1 µsec max. pulse width)

Control Characteristics

Control Input Impedance………………….

TTL, two-unit load. (A unit load is 1.6 mA sink current and 40 µA source current)

Control Logic …………………………………

Logic “0” (-0.3 to +0.8V) for switch ON

Logic “1” (+2.0to +5.0V) for switch OFF

NOTES
(1) Models prefixed with ‘F” are equipped with integrated TTL-compatible drivers; models without the ‘F” prefix are current-controlled units and are furnished without drivers.
(2) For driverless units, shaped current pulses must be provided by the user.
(3) 2W cw or peak with -20V back bias.
(4) ON and OFF time and repetition rate specifications are only applicable to Series F91 and F92 units.

ENVIRONMENTAL RATINGS
Operating Temperature Range
Series 91 and 92……..………………… Series F91 and F92 ……………………	-54°C to +110°C -55°C to +110°C
Non-Operating Temperature Range..	-65°C to +125°C
Humidity ……………………………………..	MIL-STD-202F, Method 103B, Cond. B (96 hrs. at 95%)
Shock ………………………………………….	MIL-STD-202F, Method 213B, Cond. B (75G, 6 msec)
Vibration………………………………………	MIL-STD-202F, Method 204D, Cond. B (.06″ double amplitude or 15G, whichever is less)
Altitude…………………………………………	MIL-STD-202F, Method 105C, Cond. B (50,000 ft.)
Temp. Cycling………………………………..	MIL-STD-202F, Method 107D, Cond. A, 5 cycles

AVAILABLE OPTIONS

Option No.

Description

SMA female bias/control connector

Two SMA male RF connectors

Inverse control logic; logic “0” for
switch OFF, logic “1” for switch ON
(Not applicable to Series 91/92)

One SMA male (J1) and one SMA female (J2)
RF connectors

EMI filter solder-type bias/control terminal

41⁽¹⁾

Internal video filter, port J1 only

42⁽¹⁾

Internal video filter, port J2 only

43⁽¹⁾

Internal video filter, both ports

55⁽²⁾

Frequency operation 0.5 to 18 GHz

64A

SMB male bias/control connector

G09

Meeting the specified Environmental Ratings

G12

RoHS Compliant

G18

REACH Compliant

NOTES
(1) Not applicable to models 9214 & F9214. See Video Filter Options on Switches Applications Notes.
(2) Applicable only to 1 to 18 GHz switches. See impact of Option 55 on specifications

SERIES 91 and 92

SERIES F91 AND F92

UNITS With INTEGRATED DRIVERS

DRIVERLESS UNITS

PERFORMANCE CHARACTERISTICS

DIMENSIONS AND WEIGHTS

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Series 91 and 92 Miniature Broadband SPST Switches

SERIES 91 and 92

SERIES F91 AND F92

UNITS With INTEGRATED DRIVERS

DRIVERLESS UNITS

PERFORMANCE CHARACTERISTICS

DIMENSIONS AND WEIGHTS

Need a Custom Microwave Solution?