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MRFIC1808

1.9 GHz GaAs Low Noise Amplifier

Motorola => Freescale 

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

The MRFIC Line

1.9 GHz GaAs

Low Noise Amplifier

Designed primarily for use in wireless Personal Communication Systems

(PCS) applications such as Digital European Cordless Telephone (DECT),

Japan’s Personal Handy System (PHS) and the emerging North American

systems as a preamp for discrete or integrated downmixers. The MRFIC1808

is a two–stage low noise amplifier in a low–cost SO–8 package. The amplifier

can be matched to optimize gain or noise figure with simple off–chip input

matching. The design employs a novel stacked MESFET design which reuses

bias current for the highest gain at minimal current. A CMOS compatible

RECEIVE ENABLE pin allows for very low standby current while the system is

in transmit mode.

• Usable Frequency Range = 1.7 to 2.1 GHz

• 19 dB Typ Gain

• 1.6 dB Typ Noise Figure

• Simple Off–chip Matching for Maximum Gain/Noise Figure Flexi-

bility

• High Reverse Isolation = –34 dB (Typ)

• Low Power Consumption = 13 mW (Typ)

• Single Bias Supply = 2.7 to 4.5 Volts

• Low Standby Current = 8 µA (Typ)

• Low Cost Surface Mount Plastic Package

• Order MRFIC1808R2 forTape and Reel.

R2 Suffix = 2,500 Units per 16 mm, 13 inch Reel.

• Device Marking = M1808

Order this document

by MRFIC1808/D

MRFIC1808

1.9 GHz GaAs

LOW NOISE

AMPLIFIER

CASE 751–05

(SO–8)

VDD1 1

N/C 2

8 RX ENABLE

7 GND

RF OUT 3

6 RF IN

LNA CAP 4

5 GND

Pin Connections and Functional Block Diagram

REV 1

©MMOotoTrOolaR, OIncL.A19R97F DEVICE DATA

MRFIC1808

1

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