SMA427A
50
Ω
/ 50
Ω
Low Noise Amplifier
PRELIMINARY DATA
•
CASCADABLE 50 ohm-GAIN BLOCK
•
UNCONDITIONALLY STABLE
•
GAIN |S
21
|
2
= 17 dB at 1.8 GHz
•
IP3out = +7.4 dBm at 1.575 GHz
(V
D
= 3 V, I
D
= 9.5 mA)
•
NOISE FIGURE NF = 2.2 dB at 1.8 GHz
•
TYPICAL DEVICE VOLTAGE V
D
= 2 V to 5 V
•
ULTRA MINIATURE SOT323-4L PACKAGE
(LEAD FREE)
APPLICATIONS
LNA FOR 1-2 GHz APPLICATIONS (GPS, Cellular..)
SOT323-4L (SC70)
ORDER CODE
SMA427ATR
BRANDING
TBD
BLOCK DIAGRAM
3
+V
DESCRIPTION
SMA427A is a product of the SMA Family (Silicon
MMIC Amplifiers). Housed in the ultra miniature
4-lead SC-70 (SOT323-4L LEAD FREE) surface
mount plastic package, it embeds the state of the art
Silicon ST technology. The amplifier application
shows excellent RF performance using only two
external component in the 1000-2000MHz frequency
range.
4
OUT
IN
1
2
GND
ABSOLUTE MAXIMUM RATINGS
Symbol
V
D
I
D
P
tot
P
RFin
T
amb
T
stg
T
j
Device Voltage
Device Current
Total dissipation, T
s
=
120
o
C
RF Input Power
Ambient Temperature
Storage temperature
Max. operating junction temperature
Parameter
Value
6
27
TBD
-10
-65 to +150
-65 to +150
150
Unit
V
mA
mW
dBm
o
o
o
C
C
C
THERMAL RESISTANCE
R
thjs
Thermal Resistance Junction soldering point
TBD
o
C/W
January, 7 2003
1/6
SMA427A
ELECTRICAL CHARACTERISTICS
(Ta = +25
o
C, VD = 3V, Zo = 50Ω, tested in circuit shown in Appl.1, unless otherwise specified)
Symbol
Id
|S21|
2
Parameter
Supply Current
Insertion power gain
Test Conditions
f = 1 GHz
f = 1.575 GHz
f = 1.8 GHz
f = 1 GHz
f = 1.575 GHz
f = 1.8 GHz
f = 1 GHz
f = 1.575 GHz
f = 1.8 GHz
f = 1.575 GHz
f = 1 GHz
f = 1.575 GHz
f = 1.8 GHz
f = 1 GHz
f = 1.575 GHz
f = 1.8 GHz
Min.
Typ.
9.5
22
18
17
27
25
20
1.8
2
2.2
7.4
>12
>12
>12
>12
>12
>12
Max.
Unit
mA
dB
S12
Reverse Isolation
dB
NF
IP
3out
RLin
Noise Figure
Intercept point at output
Input Return Loss
dB
dBm
dB
RLout
Output Return Loss
dB
PIN CONNECTION
4
3
Pin No.
1
Description
IN
GND
+V
OUT
Top view
1
2
SOT343
SOT343
2
3
4
Typical configuration
C2
33p
C
1
4
J2
RF OUT
C4
47n
B
Vcc
2
1
Title
+ C1
1u
Size
A
A4
Date:
File:
1
2
23-Jul-2002
Sheet of
C:\PROGETTI\SMA DEVICE\SMA 427\SMA 427.ddb
Drawn By:
3
4
Number
Revision
C3
10p
SMA 427A
J1
RF IN
2
U1
3
2/6
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