Low Noise Amplifier

AM50-0006

V2.00

Specifications Subject to Change Without Notice.

2

M/A-COM, Inc.

North America: Tel. (800) 366-2266

♦ Asia/Pacific: Tel. +81 3 3263-8761

♦

Europe:

Tel. +44 (1344) 869-595

Fax (800) 618-8883

Fax +81 3 3263-8769

Fax +44 (1344) 300-020

Parameter

Absolute Maximum

+10 VDC

Input Power

+17 dBm

Current

30 mA

+150°C

Operating Temperature

-40°Cto+85°C

Storage Temperature

-65°C to +150°C

1. Exceeding any one or combination of these limits may

cause permanent damage.

2. When pin #2 is used to increase current. (See note 5.)

3. Thermal resistance (θjc) = +150°C/W.

Functional Block Diagram For

1700-2000 MHz Operation

RF IN

RF OUT

C1

L1

L2

C2

R1 (See note 5)

3

4

6

1,5

C3

TRL

Recommended PCB Configuration For

1700-2000 MHz Operation

Layout View

PIN # 1

RF OUT

RF IN

U1

L2

C2

TRL

C1

L1

C3

R1

Pin Configuration

Pin No.

Pin Name Description

1

GND

RF and DC Ground

2

Rext

Cext

External Current Control

By-Pass Capacitor

3

IN

RF Input of the Amplifier

Positive Supply Voltage

5

GND

RF and DC Ground

6

OUT

RF Output of the Amplifier

Input Reflection Coefficient

1700-2000 MHz Operation

Freq.

1700 MHz

1850 MHz

2000 MHz

Γin (mag)

0.699

0.674

0.649

Γin (ang)

48.47 °

38.68 °

29.27 °

External Circuitry Parts List For

Part

Value

Purpose

C1

47 pF

DC Block

C2

470 pF

By-Pass

L1

2.7 nH

Tuning

L2

22 nH

RF Choke

R1

See Note 5

Current control

C3

470 pF

By-Pass

4. All external circuitry parts are readily available, low cost

surface mount components (.060 in. x .030 in. or .080 in. x

.050 in.).

5. Pin 2 allows use of an external resistor to ground for optional,

higher current.

Cross Section View

RF Traces + Components

RF Ground

DC Routing

Customer Defined

The PCB dielectric between RF traces and RF ground layers

should be chosen to reduce RF discontinuities between 50 Ω

lines and package pins. M/A-COM recommends an FR-4

dielectric thickness of 0.008” (0.20 mm) yielding a 50 Ω line

width of 0.015” (0.38 mm). The recommended RF metalization

is 1 ounce copper.