SMA428A

Bandwidth :
Output Intercept Point :
Operating Supply Voltage :
Packaging :
Mounting Style : SMD/SMT
Maximum Operating Temperature : + 85 C
Noise Figure : 1.3 dB
Type : General Purpose Amplifier
Supply Current : 7.5 mA
Operating Frequency : 1850 MHz
Package / Case : SOT-323-6L


Features:

• 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)


Application

• LNA FOR CELLULAR MARKET (ideal for GSM900, DCS1800 and PCS1900).
• LNA FOR GPS APPLICATIONS


Pinout




Specifications

Symbol	Parameter	Ratings	Unit
Vcc	Device voltage	4	V
Vout	Voltage at pin Out	4	V
VGS	Voltage at pin GS	3.5	mA
Itot	Total Device Current	12	mA
Iin	Current into pin In	0.5	mA
Ptot	Total dissipation, Ts = 125	60	mW
PIN	Input Power	8	dBm
Top	Operating temperature	-40 to +85
Tstg	Storage temperature	-65 to +150
Tj	JMax. operating junction temperature	150

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. Its 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.