Datasheet ATF-46171 Datasheet (HP)

2 – 10 GHz Medium Power
Gallium Arsenide FET

Technical Data

ATF-46171

Features

• High Output Power:

27.0␣ dBm Typical P

• High Gain at 1 dB
Compression:

11.0␣ dB Typical G

• High Power Efficiency:

38% Typical at 4␣ GHz

• Hermetic Metal-Ceramic
Stripline Package

1 dB

at 4␣ GHz

1 dB

at 4␣ GHz

Description

The ATF-46171 is a gallium
arsenide Schottky-barrier-gate
field effect transistor designed for
medium power, linear amplifica­tion in the 2 to 10 GHz frequency

Electrical Specifications, T

Symbol Parameters and Test Conditions Units Min. Typ. Max.

P

G

η

g

I

V

1 dB

1 dB

add

m

DSS

P

Power Output @ 1 dB Gain Compression: f = 4.0 GHz dBm 25.0 27.0
VDS = 9 V, IDS = 125 mA f = 8.0 GHz 26.5

1 dB Compressed Gain: VDS = 9 V, IDS = 125 mA f = 4.0 GHz dB 10.0 11.0

Efficiency @ P

Transconductance: VDS = 2.5 V, IDS = 125 mA mmho 100

Saturated Drain Current: VDS = 2.5 V, VGS = 0 V m A 200 330 450

Pinch-off Voltage: VDS = 2.5 V, IDS = 5 mA V -5.4 -3.5 -2.0

1dB

: V

range. This nominally 0.5␣ micron
gate length GaAs FET is an
interdigitated four-cell structure
using airbridge interconnects
between drain fingers. Total gate
periphery is 1.25␣ millimeters.
Proven gold based metallization
systems and nitride passivation
assure a rugged, reliable device.

This device is suitable for applica­tions in space, airborne, military
ground and shipboard, and
commercial environments. It is
supplied in a hermetic high
reliability package with low
parasitic reactance and minimum
thermal resistance.

= 25° C

A

= 9 V, I

DS

= 125 mA f = 4.0 GHz % 38

DS

70 mil Flange Package

f = 8.0 GHz 6.0

5-101

5965-8729E

ATF-46171 Absolute Maximum Ratings

Absolute

Symbol Parameter Units Maximum

V

DS

V

GS

V

GD

I

DS

P

T

T

CH

T

STG

Thermal Resistance: θjc = 75°C/W; T
Liquid Crystal Measurement: 1␣ µm Spot Size

Drain-Source Voltage V +14
Gate-Source Voltage V -7
Gate-Drain Voltage V -16

Drain Current mA I
Power Dissipation

[2,3]

W 2.0

Channel Temperature °C 175
Storage Temperature °C -65 to +175

= 150°C

CH

[4]

DSS

[1]

Notes:

1. Permanent damage may occur if
any of these limits are exceeded.

2. T

CASE TEMPERATURE

= 25°C.

3. Derate at 13 mW/° C for

> 25°C.

T

CASE

4. The small spot size of this tech­nique results in a higher, though

more accurate determination of θ

than do alternate methods. See
MEASUREMENTS section for
more information.

jc

ATF-46171 Typical Performance, T

28

P

27

(dBm)

26

1 dB

P

25

24

2.0 6.04.0 8.0 10.0 12.0

1 dB

G

1 dB

FREQUENCY (GHz)

Figure 1. Power Output @ 1 dB Gain
Compression and 1 dB Compressed
Gain vs. Frequency.
VDS = 9V, IDS = 125 mA.

20

15

10

5

0

30

25

20

15

(dBm)

(dBm)

OUT

1 dB

P

G

10

5

0

0 5 10 15

Figure 2. Output Power and Power
Added Efficiency vs. Input Power.
VDS = 9 V, IDS = 125 mA, f = 4.0 GHz.

= 25° C

A

PIN (dBm)

20 25

25

20

40

30

20

10

0

15

10

GAIN (dB)

(%)

add

5

η

0

1.0 2.0 4.0 6.0 8.0

MSG

2

|S21|

FREQUENCY (GHz)

Figure 3. Insertion Power Gain,
Maximum Available Gain and
Maximum Stable Gain vs. Frequency.
VDS = 9 V, IDS = 125 mA.

MAG

MAG

16.012.0

5-102

Typical Scattering Parameters, Common Emitter, Z

Freq. S

11

S

21

= 50 Ω, TA=25°C, V

O

S

12

=9 V, I

DS

=␣ 125 mA

DS␣

S

GHz Mag. Ang. dB Mag. Ang. dB Mag. Ang. Mag. Ang.

1.0 .95 -54 12.7 4.30 138 -29.4 .034 63 .71 -22

2.0 .84 -106 11.0 3.56 99 -26.7 .046 30 .60 -44

3.0 .81 -145 8.9 2.80 67 -25.7 .052 13 .52 -71

4.0 .81 -172 6.6 2.14 40 -25.0 .056 2 .52 -101

5.0 .80 171 4.6 1.70 18 -24.4 .060 -3 .58 -122

6.0 .79 159 3.1 1.44 1 -24.0 .063 -6 .63 -135

7.0 .78 141 2.2 1.29 -18 -23.5 .067 -10 .63 -147

8.0 .77 123 1.4 1.17 -36 -23.0 .071 -14 .64 -164

9.0 .79 108 -0.1 .99 -58 -22.5 .075 -17 .67 171

10.0 .79 100 -1.4 .85 -73 -22.0 .079 -21 .74 152

11.0 .78 93 -2.5 .75 -86 -21.6 .083 -24 .76 142

12.0 .76 85 -3.5 .67 -97 -20.6 .093 -32 .79 133

13.0 .73 67 -4.3 .61 -118 -19.5 .106 -49 .80 119

14.0 .71 47 -5.8 .51 -138 -19.0 .112 -66 .83 98

15.0 .73 35 -7.5 .42 -157 -18.6 .118 -71 .85 83

16.0 .75 26 -8.9 .36 -157 -18.3 .121 -78 .90 72

A model for this device is available in the DEVICE MODELS section.

70 mil Flange Package

.270 MIN

6.86 MIN

22

.070

1.78

SOURCE

SOURCE

4

.26

6.7

.003 ± .002

.08 ± .05

Package marking code is 461

.015
.381

GATE

1

.034

.86

2

DRAIN

.05

1.3

.08

2.0

3

.02
.50

Notes:
(unless otherwise specified)

1. Dimensions are

2. Tolerances
in .xxx = ± 0.005
mm .xx = ± 0.13

.24

6.0

in

mm

5-103