SMA428ATR 查看數據表（PDF） - STMicroelectronics

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SMA428ATR

High Gain, Low Noise Amplifier

STMicroelectronics 

SMA428A

High Gain, Low Noise Amplifier

• 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)

PRELIMINARY DATA

SOT323-6L (SC70)

APPLICATIONS

• LNA FOR CELLULAR MARKET (ideal for GSM900,

DCS1800 and PCS1900).

• LNA FOR GPS APPLICATIONS

ORDER CODE

SMA428ATR

BLOCK DIAGRAM

BRANDING

TBD

Vcc, 1

DESCRIPTION

GS, 4

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

In, 6

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

Symbol

Parameter

Vcc

Device voltage

Vout

Voltage at pin Out

VGS

Voltage at pin GS

Itot

Total Device Current

Iin

Current into pin In

Ptot

Total dissipation, Ts < 125 oC

PIN

Input Power

Top

Operating temperature

Tstg

Storage temperature

Tj

Max. operating junction temperature

THERMAL RESISTANCE

Rthjs

Thermal Resistance Junction soldering point

March, 10 2003

Out, 3

GND, 2;5

Value

4

4

3.5

12

0.5

60

8

-40 to +85

-65 to +150

150

200

Unit

V

V

V

mA

mA

mW

dBm

oC

oC

oC

oC/W

1/8

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