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