20-50 GHz GaAs Surface Mount LO Driver Amplifier

AMM-6702SM

1. Device Overview
1.1 General Description
The AMM-6702SM is a surface-mount LO driver amplifier that isdesigned to provide sufficient LO drive for an H diode mixer suchas the MM1-1850HSM or MM1-1850SSM across temperature
with input power from 0-10 dBm. This ferritic package offers
improved resilience to radiative feedback and oscillatory behavior
over the bare-die package option, providing the customer with acompact, high gain, wideband LO driver amplifier.

1.2 Features▪
▪
▪
▪

High gainBroadband performance+19 dBm output power
Compact package▪
▪
▪

Surface
Mount
KFN

Radar and satellite
communications
5G transceivers
Optimal LO driver amp for Marki
S-diode mixers

1.3 Applications▪ Mobile test and measurement
equipment

1.4 Functional Block Diagram

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1.5 Part Ordering Options1
Part
NumberDescription

Package

Green Status

Product
Lifecycle

ExportClassification

AMM-6702SM

4x4 mm Surface
Mount

KFN

RoHS

Active

EAR99

EVAL-AMM6702SM

Connectorized
Evaluation Fixture

EVALRoHS

ActiveEAR99

3.2 Package Information ....................... 4

Table of Contents
1.

3.3 Recommended Operating Conditions . 4
3.4 Sequencing Requirements ............... 5Device Overview ............................... 1

3.5 Electrical Specifications .................. 5

1.1 General Description ........................ 1

3.6 Typical Performance Plots ............... 6

1.2 Features ....................................... 1
1.3 Applications ................................... 1

4.

4.1 Preventing oscillatory behavior ......... 8

1.4 Functional Block Diagram ................ 1

4.2 Bypass Capacitance ....................... 8

1.5 Part Ordering Options ..................... 22.

2.2 Port Functions ............................... 33.

4.3 Example Application Circuit .............. 8Port Configurations and Functions ...... 3
2.1 Port Diagram ................................. 3Specifications ................................... 4

Application Information ...................... 85.

Mechanical Data ............................... 95.1 SMT Package Outline Drawing ......... 9
5.2 EVAL Package Outline Drawing ...... 10

3.1 Absolute Maximum Ratings .............. 4

Revision History
Revision Code-1

Revision Date
October 2019

CommentDatasheet Initial Release

Refer to our website for a list of definitions for terminology presented in this table.

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AMM-6702SM

2. Port Configurations and Functions
2.1 Port Diagram
A top-down (left) and bottom-up (right) view of the AMM-6702’s KFN package outline
drawing is shown below. The pin functions are detailed in section 2.2 of this datasheet.

2.2 Port Functions
PortFunction

Description

Pin 1

Positive DC
Supply Vd

Pin 1 provides +2V to +4V DC voltage
and drain current to the amplifier.
Negative voltage must be supplied to Pin 4
before turning on the positive supplyvoltage.

Pin 2RF Input

Pin 2 is the RF input of the amplifier. It isinternally DC blocked.

Pin 3

RF Output

Pin 3 is the RF output of the amplifier. Itis internally DC blocked.

Pin 4

Negative DC
Supply Vg

Pin 2 provides -0.4V to -0.6V of DCvoltage. This must be turned on before
turning on the positive supply voltage toPin 1.

GroundBottom side must be connected to a
DC/RF ground potential with high thermaland electrical conductivity.

GNDCopyright © 2019 Marki Microwave, Inc.

Equivalent Circuitfor Package

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3. Specifications
3.1 Absolute Maximum Ratings
The Absolute Maximum Ratings indicate limits beyond which damage may occur to thedevice. If these limits are exceeded, the device may be inoperable or have a reduced
lifetime.
Parameter

Maximum Rating

Units

Positive Bias Voltage (Pin 1)

5

V

Positive Bias Current (Pin 1)

400mA

Negative Bias Voltage (Pin 4)-2

V

Negative Bias Current (Pin 4)

100µA

RF Input Power+24

dBm

Operating Temperature-40 to +125

ºC

Storage Temperature-65 to +150

ºC

3.2 Package Information
ParameterDetails

RatingESD

Human Body Model (HBM), per MIL-STD-750, Method 10200Weight

EVAL Package

24.4g

3.3 Recommended Operating Conditions
The Recommended Operating Conditions indicate the limits, inside which the device shouldbe operated, to guarantee the performance given in Electrical Specifications (3.5).
Operating outside these limits may not necessarily cause damage to the device, but theperformance may degrade outside the limits of the Electrical Specifications. For limits,
above which damage may occur, see Absolute Maximum Ratings (3.1).
MinNominalMax

UnitsTA, Ambient Temperature-55+25+125°C

Positive DC Voltage+2+3+4V

Positive DC Current

100180350mA

Negative DC Voltage

-0.4

-0.5

-0.6

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3.4 Sequencing Requirements
Turn-on Procedure:
1) Apply <-0.4V to Vg (Pin 4)
2) Apply Vd (Pin 1)

Turn-off Procedure:
1) Turn off Vd (Pin 1)
2) Turn off Vg (Pin 4)

3.5 Electrical Specifications
The electrical specifications apply at TA=+25°C in a 50Ω system.
Min and Max limits apply only to our connectorized units and are guaranteed at TA=+25°C.

Parameter
Saturated Output PowerTest Conditions

Min2

TypicalUnits

3V/-0.5V bias, +5 dBm Input
Power1718dBm

1924

Small Signal Gain
Input Return Loss
Output Return Loss

83V/-0.5V bias, -25 dBm Input
PowerNoise Figure45
3V/-0.6V
3V/-0.5V

130
180

3V/-0.5V bias, -25 dBm Input
Power

321

3V/-0.5V bias

14.8

Bias Requirements3

Output IP3 (OIP3)

dB

6.5

Reverse Isolation

Input IP3 (IIP3)

9P1dBmAdBm

2

Minimum test specifications are verified up to 44 GHz within an EVAL fixture due to the highinsertion loss of the fixture above 45 GHz.
3Bias conditions tested with no RF input power. See section 3.6 for DC current vs. RF power

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3.6 Typical Performance Plots

4Temperature-controlled output power measurements were performed in the EVAL-AMM-6702SM test

fixture with 3V/-0.5V bias and +10 dBm RF input power

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AMM-6702SM

5Noise Figure measurement was performed on AMM-6702UC connectorized module.

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AMM-6702SM

4. Application Information
4.1 Preventing oscillatory behavior
The AMM-6702SM contains a multi-stage MMIC amplifier with very high small signal
gain. This MMIC can be susceptible to oscillatory behavior if it is mounted in anenvironment which allows for output power from the AMM-6702SM to radiate back tothe DC drain voltage supply line. We have created a special ferritic KFN package togreatly reduce the susceptibility to this behavior, but oscillations are still possible if theenvironment is conducive to radiative feedback or cavity resonances.
The AMM-6702SM is designed to be driven in saturation/gain compression as an LO
driver amplifier, and will be more susceptible to oscillations when driven in small signal
operation. In the case that the amplifier oscillates in your application circuit, packing
additional ferrite and absorber around the KFN is an effective tool to combat it. We
advise our customers to experiment with the AMM-6702SM in their planned application
circuit and to contact support@markimicrowave.com if they have any questions or need
advice for avoiding oscillations.

4.2 Bypass Capacitance
It is recommended that customers use sufficient shunt capacitance to ground
distributed along the gate and drain supply rails to prevent uncontrolled reactive loadingfrom being presented to the DC supply ports of the AMM-6702SM. Customers
observing oscillatory behavior in the amplifier may benefit from placing a small resistor inseries with a large capacitor along the drain supply line close to the KFN.

4.3 Example Application Circuit
Below is an example of an application circuit using the AMM-6702SM to drive the LO portof an MM1-1850HSM. It is recommended that the customer use a small amount attenuation
between the amplifier and the mixer to prevent a standing wave pattern from forming, which canharm the performance of the mixer. There are bypass capacitors connected internally in the SM
package, but we also recommend using additional surface mount capacitors on the drain and gate
supply lines to ensure predictable performance.

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5. Mechanical Data
5.1 SMT Package Outline Drawing

Notes:
1) Substrate and lid material is ceramic2) I/O Leads and Groud Paddle plating is TiWNiAu, 20 µ-inches max Au over 30 to 60 µ-inches
Ni

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5.2 EVAL Package Outline Drawing

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