Column Control DTX

TC283P, DC – 26.5 GHz HBT Amplifier

Data Sheets

Description

 

The TC283 is a DC – 26.5 GHz, 17 dB gain feedback amplifier designed to be used as a cascadable gain block for a variety of applications. The device consists of a modified Darlington feedback pair which reduces the sensitivity to process variations and provides 50 ohm input/output port matches. Furthermore, this amplifier is fabricated using HFTC’s HB2B InP HBT process which provides excellent process uniformity, reliability and 1/f noise performance. The device requires a single positive supply voltage and generally operates Class-A for good distortion performance. DC power dissipation is less than 0.165 Watts.

 

Package geometries

 

Attribute 

Dimension

Package type

12-lead quad flat no-lead (QFN) plastic with heat sink 2 х 2 mm (79 х 79 mils)

Package size

0.90 mm (23 mils)

Package thickness

0.25 х 0.50 mm (10 х 20 mils) width  pitch

Package leads

12-lead quad flat no-lead (QFN) plastic with heat sink 2 х 2 mm (79 х 79 mils)

 

Absolute Maximum Ratings

 

Symbol

Parameters / Conditions

Min.

Max.

Units

Vcc

Collector Pad Voltage

 

4

volts

Iout

Maximum Collector Current

 

30

mA

Pin

CW Input Power

 

10

dBm

Tj

Maximum Junction Temperature

 

150

°C

TA [2]

Ambient Temperature

-55

75

°C

Tstg

Storage Temperature

-65

165

°C

Tmax [3]

Maximum Assembly Temperature

 

260

°C

 

 

Symbol

Parameters / Conditions

Min.

Typical

Max.

Units

Vout

Output Pad Voltage

2.3

2.6

2.9

volts

Vin

Input Pad Voltage

1.4

1.6

1.8

Volts

Ic1

Stage One Supply Current

22

25

28

mA

Ic2

Stage Two Supply Current

 

26

 

mA

 

 

Biasing

 

The TC283 can be operated from a single positive supply. This supply must be connected to two pins on the IC, namely the VCC pin and the OUT pin. The supply voltage may be directly connected to the VCC pin as long as the voltage is between +3.0 to +4.0 Volts. However, if the supply is higher than +4 Volts, a series resistor (RCC) should be used to reduce the voltage to the VCC pad. See the biasing diagram below for the equation used to set RCC. In the case of the OUT pin, the sup- ply voltage must be connected to the output transmission line through a resistor (ROUT) and an inductor. See the biasing diagram for the equation used to set ROUT. If ROUT is greater than 300 ohms, the inductor may be omitted; however, the amplifiers gain may be reduced by ~0.5 dB.

The voltage at the In and OUT pins of the IC will be approximately 1.6 and 2.6 Volts respectfully; therefore, DC blocking caps should be used at the input and output of the device.

 

Assembly Techniques

 

The TC283 is fabricated using an InP-based HBT semiconductor material structure which limits the maximum assembly temperature to 150 °C. Due to the fact AuSn solder die-attach temperatures exceed this limit, only epoxy-based die attach materials and processes (such as 84-1LMI) should be employed during TC283 assembly.

GaAs and InP MMICs are ESD sensitive. ESD preventive measures must be employed in all aspects of storage, handling, and assembly.

Keysight application note, “GaAs MMIC ESD, Die Attach, and Bonding Guidelines" provides basic information on the subjects.

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Column Control DTX