RMDA20420 データシートの表示（PDF） - Fairchild Semiconductor

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RMDA20420

20–42 GHz Broadband Driver Amplifier

Fairchild Semiconductor 

Electrical Characteristics1

Parameter

Min

Frequency Range

20

Drain Supply Voltage (Vd)

2

Gate Supply Voltage (Vg)2

-2

Small Signal Gain3

(f = 20-22GHz)

18

(f = 22-42GHz)

20

Gain Variation vs.Frequency

Power Output at 1dB Compression

Power Output Saturated4

22

Drain Current at P1dB Compression

Drain Current at Psat

Input Return Loss

(Pin = -20dBm)

Output Return Loss

(Pin = -20dBm)

Notes:

1. Operated at 25°C, 50Ω system, Vd = +3.5V, quiescent current (Idq) = 350mA.

2. Typical range of the negative gate voltage is -0.9 to -0.15V to set typical Idq of 350mA.

3. Production measurements for small signal gain are made over a frequency range of 20 to 40GHz.

4. Saturated power measurements are not 100% tested, but guaranteed by design.

Typ

3.5

-0.6

20

22

±2.5

21

23

355

362

12

10

RF IN

DRAIN SUPPLY

(1st Stage)

DRAIN SUPPLY

(2nd-4th Stages)

MMIC Chip

Vd1 Vg2 alt

Vd2

Vd3

Vd4

Vg1

Vg2

Vg3

Vg4

Max

42

5

-0.15

Units

GHz

V

V

dB

dB

dB

dBm

dBm

mA

mA

dB

dB

RF OUT

GATE SUPPLY

(1st Stage)

GATE SUPPLY GROUND

(2nd-4th Stages) (Back of Chip)

Figure 1. Functional Block Diagram

©2004 Fairchild Semiconductor Corporation

RMDA20420 Rev. D

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