Datasheet AH3-PCB, AH3 Datasheet (WJ Company)

WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:[phone] • e-mail:[e-mail] • Web site: www.wj.com February 2002

AH3

Product Description

The AH3 is a high dynamic range amplifier for
IF requirements. The product achieves low
noise figure and high output IP3 at the same
bias point, making it ideal for receiver and
transmitter applications. In addition, the device
is internally matched for 50 ohms in a low cost
SOT-89 package. The AH3 is manufactured
using GaAs MESFET technology and boasts an
MTBF of >100 years

3

at a mounting temperature
of 85˚C. The package is a SOT-89. All devices
are 100% RF and DC tested.

Product Features

•

50-450 MHz

• +40 dBm Output IP3

• No Matching Elements Required

• 3.0 dB Noise Figure

•

13.5 dB Gain

• +20 dBm P1dB

• MTBF >100 Years

• SOT-89 SMT Package

• Single Bias Supply (+5 V )

Functional Diagram

Absolute Maximum Ratings

Parameter Rating

Operating Case Temperature -40 to +85°C
Storage Temperature -55 to +125°C
Supply Voltage +6.0 V
Input RF Power (continuous) +10 dBm

Operation of this device above any of these parameters may cause permanent damage.

Ordering Information

Part No. Description

AH3 High Dynamic Range Amplifier

(Available in tape and reel)

AH3WB-PCB Fully Assembled Application Circuit

4

123

Function Pin No.

Input 1

Ground 2

Output/Bias 3

Ground 4

High Dynamic Range Gain Block

Specifications

Parameter Units Minimum Typical Maximum Condition

Frequency Range MHz 50-450
S21 - Gain dB 12 13.5 16
S11 - Input Return Loss

1

dB -10
S22 - Output Return Loss dB -20
Output IP3 dBm +37 +40
Output P1dB dBm +20
Noise Figure

1

dB 4.5 50 MHz
Noise Figure dB 3.0 450 MHz

Operating Current Range mA 120 150 180 Vdd = 5.0 V
Supply Voltage V 5

Test conditions unless otherwise noted, T = 25˚C, Vdd = 5.0 V, 50 Ω system, 800 MHz.

1. S11 and Noise Figure can be improved using an optional input matching network.

2. OIP3 measured with 2 tones at an output power of 5 dBm/tone separated by 10 MHz.The suppression on the largest IM3 product is used to calculate OIP3 using a 2:1 slope rule.

3. MTBF calculated with ground lead temperature at 85˚C.

The Communications Edge

™

Actual Size

WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:[phone] • e-mail: [e-mail] • Web site: www.wj.com

February 2002

AH3

Performance Charts (Vds = 5 V. Ids = 150 mA, T = 22°C, unmatched device in a 50 ohm system)

10

9

10

8

10

7

10

6

10

5

50 75 100 125 150 175 200

Temperature (°C)

MTBF (hours)

MTBF vs. Temperature

Junction

Ground Tab

Gain and Return Loss (dB)

Frequency (MHz)

50 150 250 350 500450

Gain and Return Loss vs. Frequency

20

10

0

-10

-20

-40

-30

Gain

Vd = 5.0, I = 150 mA

Input Return Loss

Output Return Loss

Application Circuit: 50 to 450 MHz

Frequency (MHz)

Magnitude (dB)

0 200 400 600 1000800

S-Parameters

20

10

0

-10

-20

-30

Typical Specifications

Frequency 50 MHz 450 MHz
Magnitude S21 13.7 dB 13.7 dB
Magnitude S11 -8.3 dB -13.3 dB
Magnitude S22 -18.0 dB -15.2 dB
OIP3 36 dBm 40 dBm
Noise Figure 3.6 dB 2.7 dB
Bias Vds = 5.0 V, Id = 150 mA

FR4 Board Layout (T = 14 Mils)

Schematic

S21

S11

S22

Z = 50 ohm

100 mil

AH3

C = 1000 pF

RF OUT

RF IN

DC+5.0 V

C = 560 pF

L = 390 nH

L = 12 nH

100 mil

SOURCE

0603 Package

C = 1000 pF

0603 Package

C = 560 pF

Package 1008

L = 390 nH

Coilcraft

0603 Package

L = 12 nH

+5.0 V

GATE DRAIN

3 or more Via
Grounds req.

All Trans. Lines Z = 50 Ohm

SOURCE

AH3

NOTE: The application circuit is designed for wide bandwidth. For narrow band applications,

S11 and S21 can be improved with an input shunt microstrip element to ground.

Thermal Specifications

Parameter Rating

Operating Case Temperature -40 to +85°C
Thermal Resistance (Maximum) 59°C/W
Junction Temperature +155°C

(Recommended Maximum)

Notes:

1.Thermal Resistance determined at Maximum Tab Temperature and Maximum Power
Dissipation.

2. Recommended Maximum Junction Temperature insures a MTBF of 1 million hours.

3. Refer to WJ Application Note “AH3 Temperature Effects on Reliability” for more information.

WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:[phone] • e-mail: [e-mail] • Web site: www.wj.com February 2002

AH3

Caution! ESD sensitive device.

Specifications and information are subject to change without notice.

Outline Drawing

Land Pattern

Mounting Configuration

WJ Communications, Inc. • Phone: 1-800-WJ1-4401 • FAX:[phone] • e-mail: [e-mail] • Web site: www.wj.com

February 2002

AH3

T ypical Test Data

S-Parameters (Vds = +5 V, Ids = 150 mA, Vds = +5 V,T = 22°C, unmatched device in a 50 ohm system)

Freq (MHz) S11 (dB) S11 (Ang) S21 (dB) S21 (Ang) S12 (dB) S12 (Ang) S22 (dB) S22 (Ang)

10 -2.530 -27.743 18.006 165.650 -24.219 47.465 -7.854 -41.178
20 -5.360 -34.617 16.548 164.710 -21.904 28.449 -11.561 -57.965
30 -7.146 -33.940 15.878 166.540 -21.304 19.597 -14.429 -64.686
40 -8.272 -31.787 15.564 167.950 -21.056 14.734 -16.616 -67.287
50 -8.913 -29.549 15.389 168.780 -20.936 11.417 -18.343 -69.016
60 -9.323 -28.201 15.282 169.330 -20.881 9.429 -19.736 -69.098
70 -9.627 -27.238 15.207 169.600 -20.852 7.568 -20.943 -69.025
80 -9.813 -26.483 15.173 169.600 -20.843 6.415 -21.935 -68.672

90 -9.961 -26.149 15.137 169.540 -20.802 5.182 -22.729 -68.056
100 -10.046 -26.190 15.118 169.360 -20.793 4.339 -23.484 -67.324
110 -10.128 -26.224 15.102 169.040 -20.786 3.538 -24.103 -66.366
120 -10.184 -26.163 15.074 168.700 -20.764 2.903 -24.634 -66.106
130 -10.242 -26.641 15.070 168.310 -20.768 2.329 -25.055 -64.929
140 -10.226 -27.245 15.059 167.860 -20.752 1.733 -25.426 -65.650
150 -10.294 -28.086 15.036 167.360 -20.735 1.163 -25.889 -65.519
160 -10.269 -28.741 15.019 166.910 -20.751 0.987 -26.221 -65.007
170 -10.257 -29.077 15.007 166.490 -20.763 0.413 -26.613 -64.748
180 -10.310 -29.991 14.995 166.070 -20.752 0.005 -26.830 -64.337
190 -10.301 -30.544 14.981 165.590 -20.760 -0.451 -27.101 -64.336
200 -10.272 -31.453 14.965 165.070 -20.766 -0.838 -27.295 -65.225
210 -10.290 -32.422 14.954 164.590 -20.776 -1.054 -27.595 -64.672
220 -10.289 -33.275 14.953 163.990 -20.786 -1.431 -27.783 -65.233
230 -10.340 -34.491 14.915 163.590 -20.752 -1.523 -28.024 -67.769
240 -10.265 -35.226 14.930 162.990 -20.763 -2.062 -28.402 -66.306
250 -10.301 -36.310 14.928 162.510 -20.761 -2.114 -28.556 -65.739
260 -10.289 -37.198 14.920 161.780 -20.766 -2.567 -28.724 -66.872
270 -10.280 -38.284 14.910 161.380 -20.746 -2.924 -28.899 -66.403
280 -10.267 -39.078 14.912 160.760 -20.742 -3.082 -29.125 -67.517
290 -10.269 -40.329 14.896 160.110 -20.731 -3.442 -29.270 -67.635
300 -10.247 -41.322 14.893 159.560 -20.751 -3.708 -29.315 -66.567
310 -10.244 -42.477 14.877 159.060 -20.739 -3.997 -29.553 -67.442
320 -10.234 -43.257 14.869 158.480 -20.739 -4.204 -29.668 -67.745
330 -10.211 -44.361 14.848 157.900 -20.750 -4.549 -29.642 -68.462
340 -10.209 -45.284 14.830 157.400 -20.740 -4.737 -29.770 -68.852
350 -10.190 -46.406 14.835 156.850 -20.756 -5.043 -29.860 -69.355
360 -10.190 -47.389 14.818 156.300 -20.730 -5.115 -29.972 -70.060
370 -10.096 -48.510 14.813 155.630 -20.736 -5.669 -30.217 -70.769
380 -10.125 -49.505 14.809 155.070 -20.731 -5.639 -30.176 -71.251
390 -10.069 -50.448 14.804 154.520 -20.706 -5.940 -30.147 -71.839
400 -10.037 -51.503 14.799 153.880 -20.726 -6.180 -30.320 -72.002
410 -10.009 -52.645 14.772 153.220 -20.731 -6.471 -30.463 -72.484
420 -10.042 -53.633 14.769 152.630 -20.703 -6.842 -30.488 -73.831
430 -10.003 -54.608 14.755 151.990 -20.727 -7.052 -30.490 -74.433
440 -9.981 -55.914 14.749 151.430 -20.723 -7.190 -30.626 -75.605
450 -9.999 -56.888 14.724 150.780 -20.749 -7.483 -30.629 -76.007
460 -9.945 -57.864 14.712 150.230 -20.736 -7.717 -30.691 -77.373
470 -9.897 -58.974 14.701 149.610 -20.733 -7.927 -30.690 -78.350
480 -9.902 -59.988 14.667 149.060 -20.743 -8.242 -30.789 -80.021
490 -9.856 -61.009 14.664 148.480 -20.725 -8.424 -30.891 -80.993
500 -9.812 -62.011 14.652 147.990 -20.754 -8.530 -30.973 -81.750