2.8 dB NOISE FIGURE
LOW VOLTAGE - LOW CURRENT: 6 mA at 3 V
LOW POWER CONSUMPTION: 18 mW TYP
SUPER SMALL PACKAGE
TAPE AND REEL PACKAGING OPTION AVAILABLE
FEATURES
DESCRIPTION
3 V, 900 MHz
LOW NOISE SI MMIC AMPLIFIER
UPC2748T
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.
NOISE FIGURE AND
GAIN vs. FREQUENCY
V
CC
= 3.0 V, I
CC
= 6mA
Frequency, f (MHz)
Noise Figure, NF (dB)
ELECTRICAL CHARACTERISTICS
(T
A
= 25
C, Z
L
= Z
S
= 50
)
PART NUMBER
UPC2748T
PACKAGE OUTLINE
TO6
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
MAX
I
CC
Circuit Current (no signal)
V
CC
= 3.0 V
mA
4.5
6.0
8.0
V
CC
= 1.8 V
mA
3.5
G
S
Small Signal Gain,
f = 900 MHz, V
CC
= 3.0 V
dB
16
19
21
f = 900 MHz, V
CC
= 1.8 V
dB
11.5
f
L1
Lower Limit Operating Frequency, V
CC
= 3.0 V
GHz
0.2
0.4
V
CC
= 1.8 V
GHz
0.2
f
U2
Upper Limit Operating Frequency, V
CC
= 3.0 V
GHz
1.2
1.5
V
CC
= 1.8 V
GHz
1.5
P
SAT
Saturated Output Power,
f = 900 MHz, , V
CC
= 3.0 V
dBm
-6
-3.5
f = 900 MHz, V
CC
= 1.8 V
dBm
-10
NF
Noise Figure,
f = 900 MHz, V
CC
= 3.0 V
dB
2.8
4.0
f = 900 MHz, V
CC
= 1.8 V
dB
4.5
RL
IN
Input Return Loss,
f = 900 MHz, V
CC
= 3.0 V
dB
8.5
11.5
f = 900 MHz, V
CC
= 1.8 V
dB
10
RL
OUT
Output Return Loss,
f = 900 MHz, V
CC
= 3.0 V
dB
5.5
8.5
f = 900 MHz, V
CC
= 1.8 V
dB
12
ISOL
Isolation,
f = 900 MHz, V
CC
= 3.0 V
dB
35
40
f = 900 MHz, V
CC
= 1.8 V
dB
34
OIP
3
SSB OutputThird Order Intercept,
f1 = 500 MHz, f2 = 510 MHz, V
CC
= 3.0 V
dBm
-1
f1 = 900 MHz, f2 = 902 MHz, V
CC
= 3.0 V
dBm
-2
f1 = 1000 MHz, f2 = 1010 MHz, V
CC
= 3.0 V
dBm
-2
f1 = 900 MHz, f2 = 902 MHz, V
CC
= 1.8 V
dBm
-6
R
TH (J-A)
Thermal Resistance (Junction to Ambient)
Free Air
C/W
620
Mounted on a 50 x 50 x 1.6 mm epoxy glass PWB
C/W
230
Gain, G
S
(dB)
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
G
S
NF
0 1000 2000
20
18
16
14
4.0
3.5
3.0
2.5
UPC2748T
ABSOLUTE MAXIMUM RATINGS
1
(T
A
= 25
C)
SYMBOLS
PARAMETERS
UNITS
RATINGS
V
CC
Supply Voltage
V
4.0
I
CC
Total Supply Current
mA
15
P
IN
Input Power
dBm
0
P
T
Total Power Dissipation
2
mW
280
T
OP
Operating Temperature
C
-40 to +85
T
STG
Storage Temperature
C
-55 to +150
Notes:
1. Operation in excess of any one of these parameters may result in
permanent damage.
2. Mounted on a 50 x 50 x 1.6 mm epoxy glass PWB (T
A
= 85
C).
TEST CIRCUIT
SYMBOLS
PARAMETERS
UNITS
MIN
TYP
MAX
V
CC
Supply Voltage
V
1.8
3
3.3
T
OP
Operating Temperature
C
-40
25
85
RECOMMENDED OPERATING CONDITIONS
TYPICAL PERFORMANCE CURVES
(T
A
= 25
C)
GAIN vs. FREQUENCY
AND TEMPERATURE
NOISE FIGURE vs. FREQUENCY
CURRENT vs. SUPPLY VOLTAGE
CURRENT vs. TEMPERATURE
Supply Voltage V
CC
(V)
Circuit Current I
CC
(mA)
Circuit Current I
CC
(mA)
Gain, G
S
(dB)
Noise Figure NF (dB)
Frequency, f (GHz)
Frequency, f (MHz)
Operating Temperature T
OP
(
C)
Gain, G
S
(dB)
V
CC
50
OUT
1000 pF
IN
50
1000 pF
1000 pF
6
1
4
2, 3, 5
0 1 2 3 4 5
10
8
6
4
2
0
-60 -40 -20 0 20 40 60 80 100
10
8
6
4
2
0
V
CC
= 3.3 V
1.8 V
0 1000 2000
20
18
16
14
-40C
+25C
+85C
V
CC
= 3.0 V
I
CC
= 6 mA
0.01 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
20
15
10
5
0
V
CC
= 3.3 V
2
3
4
5
6
V
CC
= 3.0 V
V
CC
= 2.7 V
V
CC
= 1.8 V
V
CC
= 2.7 V
V
CC
= 3.0 V
V
CC
= 3.3 V
P
SAT
P
1dB
0 1000 2000
-4.0
8.0
-12.0
-
V
CC
= 3.0 V
I
CC
= 6 mA
TYPICAL PERFORMANCE CURVES
(T
A
= 25
C)
Frequency, f (GH
Z
)
Frequency, f (GH
Z
)
Input Return Loss RLin (dB)
Output Return Loss RLout (dB)
Input Power, P
IN
(dBm)
Input Power, P
IN
(dBm)
Output Power, (dBm)
Output Power, (dBm)
Frequency, f (MHz)
Output Power, (dBm)
Frequency, f (MHz)
Isolation, ISOL (dB)
Output Power, (dBm)
RETURN LOSS vs. FREQUENCY
ISOLATION vs. FREQUENCY
POWER vs. FREQUENCY
POWER vs. FREQUENCY
OUTPUT POWER vs. INPUT POWER
AND VOLTAGE
OUTPUT POWER vs. INPUT POWER
AND TEMPERATURE
UPC2748T
0.01 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
0
-10
-20
-40
-50
-30
1.8 V
V
CC
= 3.0 V
V
CC
= 3.0 V
1.8 V
0.01 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
0
10
20
30
40
50
RL
OUT
(V
CC
= 1.8 V)
RL
IN
(V
CC
= 3.0 V)
RL
in
(V
CC
= 1.8 V)
RL
out
(V
CC
= 3.0 V)
Psat
P1dB
0 1000 2000
-12.0
-16.0
-20.0
V
CC
= 1.8 V
I
CC
= 3.5 mA
-40 -30 -20 -10 0
0
-10
-20
-30
V
CC
= 3.3 V
3.0 V
2.7 V
f = 900 MH
Z
-40 -30 -20 -10 0
0
-10
-20
-30
T
A
= +85 C
+25 C
-40 C
V
CC
= 3.0 V
f = 900 MH
Z
T
A
= +85 C
+25 C
-40 C
UPC2748T
OUTLINE DIMENSIONS
(Units in mm)
PACKAGE OUTLINE T06
LEAD CONNECTIONS
(Bottom View)
(Top View)
1. INPUT
2. GND
3. GND
4. OUTPUT
5. GND
6. V
CC
Note:
All dimensions are typical unless otherwise specified.
EQUIVALENT CIRCUIT
RECOMMENDED P.C.B. LAYOUT
(Units in mm)
ORDERING INFORMATION
PART NUMBER
QTY
UPC2748T-E3
3K/Reel
Note:
Embossed Tape, 8 mm wide.
EXCLUSIVE NORTH AMERICAN AGENT FOR RF, MICROWAVE & OPTOELECTRONIC SEMICONDUCTORS
CALIFORNIA EASTERN LABORATORIES Headquarters 4590 Patrick Henry Drive Santa Clara, CA 95054-1817 (408) 988-3500 Telex 34-6393 FAX (408) 988-0279
24-Hour Fax-On-Demand: 800-390-3232 (U.S. and Canada only) Internet: http://WWW.CEL.COM
PRINTED IN USA ON RECYCLED PAPER -11/97
DATA SUBJECT TO CHANGE WITHOUT NOTICE
3.10
4
5
3
2
1
6
1.0
MIN
0.5 MIN
0.95
1.0
MIN
2
1
4
5
6
2
1
4
5
6
3
3
C1T
+0.2
-0.3
2.8
1.5
+0.2
-0.1
1
2
3
4
5
6
1.9
0.2
-0.05
+0.10
0.3
0.13
0.1
1.1
+0.2
-0.1
0 to 0.1
0.95
0.95
0.8
2.9
0.2
OUT
IN
V
CC
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