HMMC-5646 2-26.5GHz High Power Output Amplifier

HMMC-5646 2-26.5GHz High Power Output Amplifier

Data Sheets

HMMC-5646

 

Description

 

The HMMC-5646 TC765 is a broadband GaAs MMIC Traveling Wave Amplifier designed for high output power and moderate gain over the full 2 to 26.5 GHz frequency range. Seven MESFET cascode stages provide a flat gain response, making the HMMC-5646 an ideal wideband power block. The HMMC-5646 incorporates advanced MBE technology, Ti–Pt–Au gate metallization, silicon nitride passivation, and polyimide for scratch protection.

 

DC specifications/physical properties1

 

 

Symbol

Parameters/conditions

Min.

Typ.

Max.

Units

IDSS

Saturated drain current

(VDD = 11.0 V, VG1 = 0.0 V, VG2 = open circuit)

470

710

940

mA

VP

First gate pinch-off voltage

(VDD = 11.0 V, IDD = 80 mA, VG2 = open circuit)

-3.5

-1.7

-0.5

Volts

VG2

Second gate self-bias voltage

(VDD = 11.0 V, VG1 = 0.0 V)

1.0

2.1

3.0

Volts

IDSOFF(VG1)

First gate pinch-off current

(VDD = 11.0 V, VG1 = -3.5 V, VG2 = open circuit)

 

2.8

45

mA

IDSOFF(VG2)

Second gate pinch-of current

(VDD = 11.0 V, VG1 = 0 V, VG2 = -3.5 V)

 

3.7

45

mA

Θch-bs

Thermal resistance  (Tbackside = 25 °C)

 

22.5

 

°C/W

 

 

RF specifications3

 

 

 

 

2.0-20.0 GH

z

 

2.0-26.5 GH

z

 

 

HMCM-5646

 

 

HMMC-5646

 

Symbol

Parameters/conditions

Min.

Typ.

Max.

Min.

Typ.

Max.

Units

BW

Guaranteed bandwidth2

2

-

20

2

-

26.5

GHz

S21

Small signal gain

6.0

8.0

-

5.5

7.5

-

dB

ΔS21

Small signal gain flatness (> 4 GHz)

-

±0.8

±1.5

-

±1.0

±1.8

dB

RLin

Input return loss

-

-18

-10

-

-17

-10

dB

RLout

Output return loss

-

-14

-10

-

-14

-10

dB

S12

Reverse isolation

-

-30

-20

-

-27

-20

dB

P-1dB

Output power at 1 dB gain compression

22.5

26

-

19.5

23

-

dBm

Psat

Saturated output power

25.5

28.5

-

22.5

26

-

dBm

H2

2nd Harm. (2<fo<20)

[Po(fo) = 24 dBm or P-1dB whichever is less]

-

-20

-14

-

-20

-14

dBc

H3

3rd Harm. (2<fo<20)

[ Po(fo) = 24 dBm or P-1dB whichever is less]

-

-30

-14

-

-30

-14

dBc

NF

Noise figure

 

10

--

-

11

-

dB

 

 

Applications

 

The HMMC-5646 series of traveling wave amplifiers are designed for use as general purpose wideband power stages in communication systems and microwave instrumentation. They are ideally suited for broadband applications requiring high output power and excellent port matches over a 2 to 26.5 GHz frequency range. Dynamic gain control and low-frequency extension capabilities are designed into these devices.

 

It is characteristic of traveling wave amplifiers that S22 tends to 0 dB and greater out of band. This is the design trade–off for the broadband performance of TWAs. As a consequence, TWAs are not necessarily unconditionally stable out of band. This means that if a TWA is followed by a reflective low–pass filter, oscillations can occur. This phenomenon is exacerbated by low temperature where the gain is higher.

 

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