SGS Thomson Microelectronics STB7103 Datasheet
STB7102, STB7103, STB7104
0.1/2.5 GHz Si MMIC BUFFER AMPLIFIERS
FEATURES
STB710X FAMILY
• OPERATING FREQUENCY 100-2500MHz
• EXC EL LE NT ISO L ATION
• LOW CURRENT CONSUMPTION
• ULTRA MINIATURE SOT323-6L PACKAGE
(1.15 x 1.8 x 0.8 mm)
STB7102
• HIGH ISOLATION (45 dB @ 950 MHz)
PRELIMINARY DATA
SOT323-6L (SC70)
STB7103
• HIGH LINEARITY (P1 dB OUTPUT = +1.5 dBm)
STB7104
• LOW CURRENT CONSUMPTION (2.8 mA)
ORDERING INFORMATION
P/N ORDER CODE MARKING
STB7102 STB7102TR 102
STB7103 TBD 103
STB7104 TBD 104
DESCRIPTION
The STB7102, STB7103 and STB7104 designed for Mobile Phone applications (0.1/2.5GHz), are an
high isolation Si MMIC Buffer Amplifiers. Manufactured in th e third generation of ST proprietary bipolar
process, they offers an excellent isolation and a good linearity using a low current consump tion. These
low current amplifiers operate on 3 .0 V. The STB710x f amily is housed in an ul tra miniature package
SOT323-6L surface mount package. SOT323-6L dimensions are 1.15mmx1.8mm with 0.8 mm
thickness.
APPLICATION
UHF BUFFER AMPLIFIER for Mobile Phone Application (0.1/2.5GHz)
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Conditions Value Unit
V
T
June, 17 2002
Supply voltage 3.3 V
cc
Storage temperature -40 to +100
stg
T
Operating ambient temperature -30 to +85
a
o
o
C
C
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STB7102, STB7103, STB7104
PIN CONNECTION
(Top View)
4
3
4
(Bottom View)
3
Pin No. Pin Name
1 INPUT
2GND
5
2
5
2
3GND
4 OUTPUT
1
6
6
1
5GND
6VCC
PRODUCT LINE-UP
950 MHz output port
Part Number Icc (mA)
matching frequency
Gp at 1dB (dB) ISL (dB) P
STB7102 4.3 15.5 45 0
STB7103 4.1 17.5 45 1.5
STB7104 2.8 17 45 -0.25
Example of a digital cellular phone (Receiver and Transmission section)
Receiv er sectio n
Duplexer
LNA
SAW
Filter
RF
Mixer
IF
Filter
AGC
IF
Amp
IQ
Demodulator
XX
I
XX
Q
XX
Lo Buffer
Amplifier
IF Buffer
1dBout (dBm)
ADC
ADC
RF PLLRF PLL
IF PLLIF PLL
IQ
IQ
IQ
IQ
IQ
IF Buffer
IF Buffer
IF Buffer
IF Buffer
IF Buffer
IF Buffer
IF Buffer
IQ
Modulator
Modulator
Modulator
Modulator
Modulator
Modulator
X
X
X
X
X
X
XX
X
X
X
X
X
X
XX
IF PLL
IF PLL
IF PLL
IF PLL
IF PLL
IF PLL
IF PLLIF PLL
DAC
DAC
DAC
DAC
DAC
I
I
I
I
I
Q
Q
Q
Q
Q
DAC
DAC
DAC
DAC
DAC
Transmission section
Duplexer
Duplexer
IF
IF
RF
RF
RF
RF
RF
RF
RF
PA
PA
AGC
AGC
Filter
Filter
Filter
FilterRFFilterRFFilter
Lo Buffer
Lo Buffer
Lo Buffer
Lo Buffer
Amplifier
Amplifier
Amplifier
Amplifier
RF
Mixer
Mixer
Mixer
Mixer
X
X
X
XX
RF PLL
RF PLL
RF PLL
RF PLLRF PLL
IF
Amp
Amp
Amp
IF
IF
IF
IF
Filter
Filter
Filter
Filter
These ICs can be added to your system around parts, when you need more isolation or gain.
The application showed above is only an example therefore it can depend on your kit evaluation.
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STB7102, STB7103, STB7104
ELECTRICAL CHARACTERISTICS
(Ta = +25 oC, Vcc = 3V, Zs = ZL = 50Ω, unless otherwise specified)
Symbol Parameters
I
cc
P1dB
G
P
Circuit Current f = 950 MHz 3.3 4.3 5.3 3.3 4.1 4.9 2.2 2.8 3.4 mA
Output Power at 1dB
Compression Point
Gain at 1dB
Compression Point
T est
Conditions
STB7102
Min Typ Max Min T yp Max Min Typ Max
(1)
f = 950 MHz 0 1.5 -0.25 dBm
f = 950 MHz 15.5 17.5 17 dB
STB7103
NF Noise Figure f = 950 MHz 3 2.85 3.3 dB
ISL Isolation f = 950 MHz 45 45 45 dB
RL
RL
out
(1)
STB7102 data are mea sured in TEST CIRCUIT showed in page 5
(2)
STB7103 and STB7104 data are measured in TEST CIRCUIT showed in page 8
Input Return Loss f = 950 MHz 8 10 7 dB
in
Output Return Loss f = 950 MHz 20 7 7 dB
(2)
STB7104
(2)
Unit
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