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Visit www.macomtech.com for additional data sheets and product information.

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changes to the product(s) or information contained herein without notice.

1

Surface Mount Low Power Step Recovery Diodes

Rev. V5

MA44700 Series

ADVANCED: Data Sheets contain information regarding a product M/A-COM Technology Solutions

is considering for development. Performance is based on target specifications, simulated results,

and/or prototype measurements. Commitment to develop is not guaranteed.

PRELIMINARY: Data Sheets contain information regarding a product M/A-COM Technology

Solutions has under development. Performance is based on engineering tests. Specifications are

typical. Mechanical outline has been fixed. Engineering samples and/or test data may be available.

Commitment to produce in volume is not guaranteed.

Features

• Surface Mount Packages (SOT-23,SC-79)

• Low transition times

• SPC Process for Superior C-V Repeatability

• Tape and Reel Packaging

• Designed for Commercial Wireless Applications

• Also Offering RoHS Compliant Equivalent Parts

Description

The MA44700 series of Step Recovery diodes is

designed for use in low power multipliers with output

frequencies of up to 5 GHz. These Step Recovery

diodes generate harmonics by storing a charge as

the diode is driven to forward conductance by the

positive voltage of the input signal. When the signal

reverses polarity, this charge is extracted. The Step

Recovery diode will appear as a low impedance cur-

rentsource until all the charge is extracted, then it

will “snap” to a higher impedance. This causes a

voltage

pulse

to

form

in

the

impulse

circuit of the multiplier. Step Recovery diodes make

excellent high order multipliers such as comb gen-

erators. They are also useful as efficient moderate

power X2-X4 multipliers.

Applications

The MA44700 series step recovery are useful for

surface mount low power applications.

Absolute Maximum Ratings

1,2

1. Operation of this device above any one of these parameters

may cause permanent damage.

2. Please refer to application note M538 for surface mounting

instructions

Parameter

Absolute Maximum

Operating Temperature

-65 °C to +125 °C

Storage Temperature

-65 °C to +125 °C

Reverse Voltage

30V

Forward Bias Current

50 mA

Power Dissipation

250 mW

Part Number

(non-RoHS)

1

RoHS Compliant

Part Numbers

1

2

Reverse

Voltage

Nominal

Carrier

Transition

Time

Nominal

Input

Nominal

Output

(pF)

(V)

(nS)

(pS)

(GHz)

f=1 MHz,

Ir =10 uA

Min.

Max.

Min.

Typical

Max

MA44767-287T

MAVR-044767-0287AT

MAVR-044767-12790T

3.0

4.5

30

250-500

600

0.05-5

0.5-1.5

MA44768-287T

MAVR-044768-0287AT

MAVR-044768-12790T

1.6

2.4

30

75-225

250

0.1-1

0.5-2.5

MA44769-287T

MA144769-287T

MAVR-044769-12790T

0.8

1.2

30

20-50

150

0.1-1

1-5

(GHz)

1.

The prefix defines package style, configuration and packaging information. Contact representative for complete part identification.

2.

Capacitance @ 1 MHz

Typical Capacitance vs. Bias (V) freq=1MHz

0

1

2

3

4

5

6

7

8

0

5

10

15

20

25

30

Bias(V)

MA44768

MA44769

MA44767