1/8

PRELIMINARY DATA

March, 10 2003

SMA428A

High Gain, Low Noise Amplifier

Thermal Resistance Junction soldering point

200

Symbol

Parameter

Value

Unit

Device voltage

4

V

Voltage at pin Out

4

V

Voltage at pin GS

3.5

V

Total Device Current

12

mA

Current into pin In

0.5

mA

60

mW

Input Power

8

dBm

Operating temperature

-40 to +85

Storage temperature

-65 to +150

Max. operating junction temperature

150

ORDER CODE

SMA428ATR

BRANDING

TBD

SOT323-6L (SC70)

• HIGH GAIN Gp = 21 dB at 1.85 GHz

• LOW NOISE FIGURE NF = 1.3 dB at 1.85 GHz

• LOW CURRENT CONSUMPTION 5.9 mA

• OPEN COLLECTOR OUTPUT

• TYPICAL SUPPLY VOLTAGE: 2.4-3 V

• GAIN-STEP-MODE (36dB)

• ULTRA MINIATURE SOT323-6L PACKAGE (LEAD

FREE)

APPLICATIONS

• LNA FOR CELLULAR MARKET (ideal for GSM900,

DCS1800 and PCS1900).

• LNA FOR GPS APPLICATIONS

DESCRIPTION

High gain and low noise figures make the SMA428A an

ideal solution for Low Noise Amplifiers and receiver

front end stages up to 2.5 GHz. SMA428A’s typical

supply voltage range is 2.4 to 3.3 volts. It shows

excellent performances in terms of NF, Gain and

current consumption, using just 3 external matching

components. Applying supply voltage to the GS pin and

grounding Vcc pin, it provides a reduced gain step of 35

dB. SMA428A is housed in ultra miniature SOT323-6L

package(LEAD FREE), the relative dimensions are

1.15mmx1.8mm with 0.8mm thickness.

ABSOLUTE MAXIMUM RATINGS

THERMAL RESISTANCE

In, 6

GS, 4

Vcc, 1

GND, 2;5

Out, 3

BLOCK DIAGRAM