0.5 W, 2.4 GHz Power Amplifier

AM52

-
0024

Functional Schematic

V 1.4

Features

Ideal for 802.11b ISM Applications

Single Positive Supply

Output Power 27.5 dBm

57% Typical Power Added Efficiency

Downset MSOP-8 Package

Description

M/A-COM's AM52-0024 is a 0.5 W, 2.4 GHz GaAs
MMIC, power amplifier in a low-cost MSOP-8 package. It
employs some external matching to obtain optimum input
return loss and output power performance. The AM52-
0024 may be operated with supply voltages of +3.3 V to
+5.5 V.

The AM52-0024 may be used in a wide variety of applica-
tions including WLAN, WDECT, and Bluetooth.

The AM52-0024 is fabricated using M/A-COM's Self-
Aligned MSAG MESFET process to realize high power
efficiency, single supply voltage, and small size. The proc-
ess features full passivation for increased performance and
reliability.

Electrical Specifications

1,2

: T

= +37°C

(temperature measured at the soldering point of the downset paddle)

Characteristic

Min

Typ

Max

Unit

Test Conditions

Output Power

25.5

27.5

dBm

F = 2450 MHz, P

= -2 dBm

Power Added Efficiency

F = 2450 MHz, P

= -2 dBm

Current Under Drive

300

F = 2450 MHz, P

= -2 dBm

Current Under Linear Operation

130

230

300

F = 2450 MHz, P

OUT

= +20 dBm

Small Signal Gain

29.0

F = 2450 MHz, P

OUT

= +20 dBm

Harmonics

-40

dBc

F = 2450 MHz, P

= -2 dBm

Input VSWR

1.4:1

2.0:1

F = 2450 MHz, P

= -2 dBm

Off Isolation

F = 2450 MHz, V

= 0 V

Thermal Resistance, junction to package bottom

°C/W

F = 2450 MHz, P

= -2 dBm

Third Order Intercept Point

dBm

F1 = 2450 MHz, P

= -20 dBm

F2 = 2451 MHz, P

= -20 dBm

Load Mismatch

No Degradation in Power

Output

= 5.5 V, VSWR = 8:1, P

= 0 dBm

Stability

= -2 to +2 dBm, V

= 0 to 5.5 V,

Load VSWR = 6:1, all phases

All non-harmonically re-

lated outputs more than 60

dB below desired signal

Frequency

2.4

2.5

GHz

PIN 1

PIN 8

Ordering Information

Part Number

Package

AM52-0024TR

7 inch, 1000 Piece Reel

AM52-0024TR-3000

13 inch, 3000 Piece Reel

AM52-0024SMB

Sample Test Board

= +3.3 Volts, P

= -2 dBm, Frequency = 2450 MHz, and Duty Cycle = 100% unless otherwise specified.

All Measurements taken in a 50

system unless otherwise specified.

0.5 W, 2.4 GHz Power Amplifier

AM52-0024

Specifications subject to change without notice.
n

North America: Tel. (800) 366-2266

Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298

Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020

Visit www.macom.com for additional data sheets and product information.

V 1.4

MSOP-8EP Plastic Package

Absolute Maximum Ratings

Rating

Symbol

Value

Unit

DC Supply Voltage

5.5

RF Input Power

Junction Temperature

150

°C

Storage Temperature Range

STG

-40 to +150

°C

Operating Temperature

OPER

-40 to +100

°C

4. Exceeding these limits may cause permanent damage.

Pin Configuration

Pin

Function

Description

Drain Voltage for First Stage

RF input and Gate Voltage for

First Stage

GND

Ground

Gate Bias for Second Stage

Gate Bias for Third Stage

GND

Ground

OUT

RF Output and Drain Voltage for

Third Stage

Drain Voltage for Second Stage

3. Package bottom is electrical and thermal ground

Measurement

(mm)

Measurement

(inches)

Min

Max

Min

Max

0.80

1.10

0.0315

0.0433

0.026

0.076

0.0010

0.0030

0.75

0.95

0.0295

0.0374

0.25

0.40

0.0098

0.0157

2.90

3.10

0.1142

0.01220

1.85 ref. 1.85 ref. 0.073 ref. 0.073 ref.

4.90

basic

4.90

basic

0.1929

basic

0.1929

basic

2.90

3.10

0.1142

0.1220

1.73 ref 1.73 ref. 0.068 ref. 0.068 ref.

0.65

basic

0.65

basic

0.0256

basic

0.0256

basic

0.40

1.70

0.0157

0.0276

Theta (

)

0°

6°

0°

60°

Dimensions

Note: All dimensions per JEDEC MO-187 Var. AA (issue B)

except for D1, E2, and A1. See JEDEC or contact M/A-COM for

additional dimensional and tolerance information.

0.5 W, 2.4 GHz Power Amplifier

AM52-0024

Specifications subject to change without notice.
n

North America: Tel. (800) 366-2266

Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298

Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020

Visit www.macom.com for additional data sheets and product information.

V 1.4

OUT

C4
3

Full-Downset Paddle

To Board Ground

Evaluation Board Schematic

List of components:

C1 C4 = 100 pF multilayer ceramic chip capacitor (Dielectric Labs C11AH101K5TXL)

C5 = 2.0 pF multilayer ceramic chip capacitor (Dielectric Labs C11AH2R0B5TXL)

C6 = 1.2 pF multilayer ceramic chip capacitor (Dielectric Labs C11AH1R2B5TXL)

R1 = 300

chip resistor (P300ECT -ND)

L1 = 1.8 nH chip inductor (Toko TKS2360CT -ND)

L2 = 27 nH chip inductor (Coilcraft 1008CS-270XKBB)

Transmission Line

Length

Width

0.15 inches

0.077 inches

0.21 inches

0.077 inches

0.11 inches

0.077 inches

0.16 inches

0.026 inches

0.13 inches

0.077 inches

0.16 inches

0.077 inches

0.13 inches

0.026 inches

0.07 inches

0.026 inches

* Lengths and widths are given for a 0.060 inch thick FR-4 board

(distance between RF and ground planes) with dielectric constant

of approximately 4.3.

0.5 W, 2.4 GHz Power Amplifier

AM52-0024

Specifications subject to change without notice.
n

North America: Tel. (800) 366-2266

Asia/Pacific: Tel.+81-44-844-8296, Fax +81-44-844-8298

Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020

Visit www.macom.com for additional data sheets and product information.

V 1.4

Designing With the AM52-0024

The AM52-0024 is built using a near-enhancement mode FET that operates from a single supply voltage. A negative
voltage is not required because the FET is designed to operate with a +0V DC gate bias.

To duplicate AM52-0024 data sheet performance, the circuit board must present the same impedances realized on
this evaluation board. The table below has impedance measurements looking into the traces on the evaluation board,

Frequency

DD1

Pin 1

GG1

Pin 2

GG2

Pin 4

O U T

D D 3

Pin 7

DD2

Pin 8

GHz

MAG

ANG

MAG

ANG

MAG

ANG

MAG

ANG

MAG

ANG

0.2

0.98890

168.89

0.98437

158.43

0.98990

157.75

0.96758

88.92

0.98740

170.03

0.3

0.88449

130.14

0.97810

148.00

0.98811

147.07

0.93440

52.01

0.87259

126.11

0.4

0.96296

162.21

0.96932

138.02

0.98733

136.83

0.89791

28.02

0.95647

168.46

0.5

0.98166

159.36

0.96033

128.52

0.98729

126.92

0.85525

8.85

0.97951

165.71

0.6

0.98669

150.11

0.95221

119.37

0.98779

117.53

0.80306

-8.42

0.98325

157.06

0.7

0.98659

142.94

0.94257

110.68

0.98796

108.67

0.75165

-23.19

0.98331

150.64

0.8

0.98701

136.46

0.93372

102.50

0.98912

100.34

0.70235

-36.51

0.98362

144.92

0.9

0.98696

130.40

0.92399

94.78

0.98928

92.48

0.65785

-49.03

0.98291

139.57

1.0

0.98757

124.64

0.91521

87.48

0.99004

85.10

0.61674

-61.22

0.98248

134.49

1.1

0.98793

119.13

0.90655

80.60

0.99099

78.16

0.58189

-73.60

0.98325

129.55

1.2

0.98766

113.79

0.89741

74.13

0.99165

71.67

0.55207

-86.36

0.98254

124.75

1.3

0.98685

108.52

0.88850

68.01

0.99162

65.55

0.52778

-99.76

0.98097

119.95

1.4

0.98253

103.08

0.87922

62.20

0.99228

59.78

0.51054 -113.87

0.97567

14.77

1.5

0.91016

98.26

0.87041

56.61

0.99283

54.27

0.50134 -128.62

0.88506

109.11

1.6

0.97895

96.95

0.85901

51.24

0.99372

49.02

0.50184 -143.72

0.96660

110.93

1.7

0.98693

91.94

0.84867

46.25

0.99362

44.08

0.51099 -159.03

0.97912

105.76

1.8

0.98885

87.51

0.83780

41.39

0.99411

39.33

0.52890 -174.06

0.98174

101.51

1.9

0.98968

83.39

0.82602

36.67

0.99457

34.73

0.55378

171.57

0.98247

97.56

2.0

0.99001

79.46

0.81268

32.09

0.99405

30.31

0.58373

158.06

0.98252

93.75

2.1

0.98939

75.68

0.79856

27.65

0.99409

26.02

0.61689

145.85

0.96646

89.86

2.2

0.9079

72.12

0.78264

23.35

0.99430

21.85

0.65283

133.76

0.98349

87.18

2.3

0.99100

68.61

0.76563

19.11

0.99427

17.75

0.68573

123.12

098395

83.71

2.4

0.99134

65.25

0.74652

14.96

0.99425

13.76

0.71788

113.31

0.98474

80.41

2.5

0.99146

61.98

0.72506

10.91

0.99399

9.82

0.74798

104.32

0.98447

77.23

2.6

0.99178

58.73

0.70186

6.91

0.99400

5.85

0.77528

95.95

0.98507

74.04

2.7

0.99134

55.49

0.67587

2.97

0.99331

1.90

0.79976

88.27

0.98381

70.83

2.8

0.98781

52.20

0.64683

-0.91

0.99282

-2.00

0.82079

81.13

0.98006

67.52

2.9

0.96980

48.90

0.61470

-4.81

0.99214

-5.98

0.83832

74.49

0.96403

63.91

3.0

0.95172

48.55

0.57400

-8.86

0.99108

-9.98

0.85400

68.30

0.90400

62.55

3.1

0.98242

46.16

0.52740

-11.19

0.98954

-13.99

0.86663

62.57

0.95087

63.65

3.2

0.99063

43.08

0.48956

-13.34

0.98827

-18.12

0.87801

57.07

0.97696

60.24

3.3

0.99392

40.27

0.44620

-15.29

0.98684

-22.42

0.88698

51.92

0.98397

57.19

3.4

0.99353

37.51

0.40182

-16.23

0.98579

-26.81

0.89353

46.93

0.98539

54.35

3.5

0.99183

34.87

0.35797

-15.65

0.98338

-31.29

0.89823

42.18

0.98374

51.69

3.6

0.98528

32.36

0.31683

-13.12

0.98114

-36.02

0.90042

37.52

0.97595

49.24

3.7

0.98115

30.74

0.28368

-7.89

0.97774

-40.95

0.89832

32.95

0.97468

47.68

3.8

0.99055

28.59

0.26456

-0.17

0.97527

-46.15

0.88711

28.34

0.98255

45.41

3.9

0.99468

26.15

0.26206

8.43

0.97149

-51.66

0.85217

23.98

0.98187

42.91

4.0

0.99541

23.85

0.27526

16.18

0.96801

-57.48

0.78439

25.69

0.97076

41.20

Part Number AM52-0024