3 V, 900 MHz
LOW NOISE SI MMIC AMPLIFIER
FEATURES
• 2.8 dB NOISE FIGURE
• LOW VOLTAGE - LOW CURRENT:
6 mA at 3 V
• LOW POWER CONSUMPTION:
18 mW TYP
18
20
G
S
UPC2748T
NOISE FIGURE AND
GAIN vs. FREQUENCY
V
CC
= 3.0 V, I
CC
= 6mA
4.0
3.5
DESCRIPTION
The UPC2748T is a Silicon Monolithic integrated circuit which
is manufactured using the NESAT III process. The NESAT III
process produces transistors with f
T
approaching 20 GHz.
This amplifier was designed for 900 MHz receivers in cellular
and cordless telephone applications. Operating on a 3 volt
supply (1.8 volt minimum) this IC is ideally suited for hand-
held, portable designs.
NEC's stringent quality assurance and test procedures en-
sure the highest reliability and performance.
Gain, G
S
(dB)
• TAPE AND REEL PACKAGING OPTION AVAILABLE
16
3.0
NF
14
2.5
0
1000
2000
Frequency, f (MHz)
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C, Z
L
= Z
S
= 50
Ω)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
I
CC
G
S
f
L1
f
U2
P
SAT
NF
RL
IN
RL
OUT
ISOL
OIP
3
PARAMETERS AND CONDITIONS
Circuit Current (no signal)
Small Signal Gain,
V
CC
= 3.0 V
V
CC
= 1.8 V
f = 900 MHz, V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
UNITS
mA
mA
dB
dB
GHz
GHz
GHz
GHz
dBm
dBm
dB
dB
dB
dB
dB
dB
dB
dB
dBm
dBm
dBm
dBm
°C/W
°C/W
8.5
5.5
35
1.2
-6
MIN
4.5
16
UPC2748T
TO6
TYP
6.0
3.5
19
11.5
0.2
0.2
1.5
1.5
-3.5
-10
2.8
4.5
11.5
10
8.5
12
40
34
-1
-2
-2
-6
620
230
4.0
MAX
8.0
21
0.4
Lower Limit Operating Frequency, V
CC
= 3.0 V
V
CC
= 1.8 V
Upper Limit Operating Frequency, V
CC
= 3.0 V
V
CC
= 1.8 V
Saturated Output Power,
Noise Figure,
Input Return Loss,
Output Return Loss,
Isolation,
f = 900 MHz, , V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
f = 900 MHz, V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
f = 900 MHz, V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
f = 900 MHz, V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
f = 900 MHz, V
CC
= 3.0 V
f = 900 MHz, V
CC
= 1.8 V
f1 = 900 MHz, f2 = 902 MHz, V
CC
= 3.0 V
f1 = 1000 MHz, f2 = 1010 MHz, V
CC
= 3.0 V
f1 = 900 MHz, f2 = 902 MHz, V
CC
= 1.8 V
SSB OutputThird Order Intercept,
f1 = 500 MHz, f2 = 510 MHz, V
CC
= 3.0 V
R
TH (J-A)
Thermal Resistance (Junction to Ambient)
Free Air
Mounted on a 50 x 50 x 1.6 mm epoxy glass PWB
Notes:
1.The gain at f
L
is 3 dB down from the gain at 900 MHz.
2.The gain at f
U
is 3 dB down from the gain at 900 MHz.
Calfornia Eastern Laboratories
Noise Figure, NF (dB)
• SUPER SMALL PACKAGE
NEC [ NEC ]
