DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC2776TB
5 V, SUPER MINIMOLD SILICON MMIC
MEDIUM OUTPUT POWER AMPLIFIER
DESCRIPTION
The
µ
PC2776TB is a silicon monolithic integrated circuits designed as wideband amplifier. This amplifier has
impedance near 50
Ω
in HF band, so this IC suits to the system of HF to L band.
This IC is manufactured using NEC’s 20 GHz f
T
NESAT™ III silicon bipolar process. This process uses silicon
nitride passivation film and gold electrodes. These materials can protect chip surface from external pollution and
prevent corrosion/migration. Thus, this IC has excellent performance, uniformity and reliability.
FEATURES
• Supply voltage
• Circuit current
• Power gain
• Medium output power
• Port impedance
: V
CC
= 4.5 to 5.5 V
: I
CC
= 25 mA TYP. @V
CC
= 5.0 V
: G
P
= 23 dB TYP. @f = 1 GHz
: P
O(1 dB)
= +6.5 dBm @f = 1 GHz
: input/output 50
Ω
• Upper limit operating frequency : f
u
= 2.7 GHz TYP. @3 dB bandwidth
• High-density surface mounting : 6-pin super minimold package (2.0
×
1.25
×
0.9 mm)
APPLICATION
• Systems required wideband operation from HF to 2.0 GHz
ORDERING INFORMATION
Part Number
Package
6-pin super minimold
Marking
C2L
Supplying Form
• Embossed tape 8 mm wide
• 1, 2, 3 pins face the perforation side of the tape
• Qty 3 kpcs/reel
µ
PC2776TB-E3
Remark
To order evaluation samples, please contact your local NEC sales office.
Part number for sample order:
µ
PC2776TB
Caution Electro-static sensitive devices
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for
availability and additional information.
Document No. P12680EJ3V0DS00 (3rd edition)
Date Published February 2001 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1997, 2001
µ
PC2776TB
PIN CONNECTIONS
Pin No.
(Top View)
3
2
1
(Bottom View)
4
5
6
4
5
6
3
Pin name
INPUT
GND
GND
OUTPUT
GND
V
CC
1
2
3
2
1
C2L
4
5
6
PRODUCT LINE-UP OF 5 V-BIAS SILICON MMIC MEDIUM OUTPUT POWER AMPLIFIER
(T
A
= +25°C, V
CC
= V
out
= 5.0 V, Z
S
= Z
L
= 50
Ω
)
Part No.
f
u
(GHz)
2.7
P
O(1 dB)
(dBm)
+6.5
P
O(sat)
(dBm)
+8.5
G
P
(dB)
23
NF
(dB)
6.0
@f = 1 GHz
6.5
@f = 1 GHz
5
@f = 1 GHz
3.5
@f = 0.5 GHz
I
CC
(mA)
25
6-pin super minimold
6-pin minimold
26
6-pin super minimold
6-pin minimold
25
6-pin super minimold
6-pin minimold
22
6-pin super minimold
C1F
C1E
C1D
Package
6-pin minimold
C2L
Marking
µ
PC2776T
µ
PC2776TB
µ
PC2708T
µ
PC2708TB
µ
PC2709T
µ
PC2709TB
µ
PC2710T
µ
PC2710TB
2.9
−
+10.0
15
2.3
+9.0
+11.5
23
1.0
−
+13.5
33
Remark
Typical performance. Please refer to
ELECTRICAL CHARACTERISTICS
in detail.
To know the associated product, please refer to each latest data sheet.
Caution The package size distinguishes between minimold and super minimold.
2
Data Sheet P12680EJ3V0DS
µ
PC2776TB
PIN EXPLANATION
Pin
Voltage
(V)
Note
Pin
No.
1
Pin Name
Applied
Voltage (V)
–
Function and Applications
Internal Equivalent Circuit
INPUT
1.03
Signal input pin. A internal
matching circuit, configured with
resistors, enables 50
Ω
connec-
tion over a wide band.
A multi-feedback circuit is de-
signed to cancel the deviations
of h
FE
and resistance.
This pin must be coupled to sig-
nal source with capacitor for DC
cut.
Ground pin. This pin should be
connected to system ground
with minimum inductance.
Ground pattern on the board
should be formed as wide as
possible.
All the ground pins must be
connected together with wide
ground pattern to decrease im-
pedance difference.
Signal output pin. The inductor
must be attached between V
CC
and output pins to supply cur-
rent to the internal output tran-
sistors.
6
4
2
3
5
GND
0
–
1
4
OUTPUT
Voltage
as same
as V
CC
through
external
inductor
4.5 to 5.5
–
3
2
5
6
V
CC
–
Power supply pin, which biases
the internal input transistor.
This pin should be externally
equipped with bypass capacitor
to minimize its impedance.
Note
Pin voltage is measured at V
CC
= 5.0 V
Data Sheet P12680EJ3V0DS
3
µ
PC2776TB
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Circuit Current
Power Dissipation
Symbol
V
CC
I
CC
P
D
Conditions
T
A
= +25°C, pin 4 and pin 6
T
A
= +25°C
Mounted on double-sided copper clad
50
×
50
×
1.6 mm epoxy glass PWB,
T
A
= +85°C
Ratings
6
60
270
Unit
V
mA
mW
Operating Ambient Temperature
Storage Temperature
Input Power
T
A
T
stg
P
in
T
A
= +25°C
−40
to +85
−55
to +150
+10
°C
°C
dBm
RECOMMENDED OPERATING RANGE
Parameter
Supply Voltage
Symbol
V
CC
MIN.
4.5
TYP.
5.0
MAX.
5.5
Unit
V
Remark
The same voltage should be ap-
plied to pin 4 and pin 6.
ELECTRICAL CHARACTERISTICS
(Unless otherwise specified, T
A
= +25 °C, V
CC
= V
out
= 5.0 V, Z
S
= Z
L
= 50
Ω
)
Parameter
Circuit Current
Power Gain
Gain 1 dB Compression Output
Power
Noise Figure
Upper Limit Operating Frequency
Symbol
I
CC
G
P
P
O(1dB)
No signal
f = 1 GHz
f = 1 GHz
Test Conditions
MIN.
18
21
+4.0
−
2.3
TYP.
25
23
+6.5
MAX.
33
26
−
7.5
−
−
−
−
−
−
Unit
mA
dB
dBm
NF
f
u
f = 1 GHz
3 dB down below from gain at
f = 0.1 GHz
f = 1 GHz
f = 1 GHz
f = 1 GHz
f = 1 GHz
f = 0.1 to 2.0 GHz
6.0
2.7
dB
GHz
Isolation
Input Return Loss
Output Return Loss
Saturated Output Power
Gain Flatness
ISL
RL
in
RL
out
P
O(sat)
∆G
P
27
4.5
15
−
−
32
7.5
20
+8.5
±1.0
dB
dB
dB
dBm
dB
4
Data Sheet P12680EJ3V0DS
µ
PC2776TB
TEST CIRCUIT
V
CC
1 000 pF
C
3
6
50
Ω
IN
1 000 pF
C
1
1
4
L
C
2
1 000 pF
50
Ω
OUT
2, 3, 5
COMPONENTS OF TEST CIRCUIT
FOR MEASURING ELECTRICAL
CHARACTERISTICS
Type
C
1
, C
2
C
3
L
Bias Tee
Capacitor
Bias Tee
Value
1 000 pF
1 000 pF
1 000 nH
EXAMPLE OF ACTUAL APPLICATION COMPONENTS
Type
C
1
to C
3
L
Chip capacitor
Chip inductor
Value
1 000 pF
300 nH
100 nH
10 nH
Operating Frequency
100 MHz or higher
10 MHz or higher
100 MHz or higher
1.0 GHz or higher
INDUCTOR FOR THE OUTPUT PIN
The internal output transistor of this IC consumes 20 mA, to output medium power. To supply current for output
transistor, connect an inductor between the Vcc pin (pin 6) and output pin (pin 4). Select large value inductance, as
listed above.
The inductor has both DC and AC effects. In terms of DC, the inductor biases the output transistor with minimum
voltage drop to output enable high level. In terms of AC, the inductor make output-port-impedance higher to get
enough gain. In this case, large inductance and Q is suitable.
For above reason, select an inductance of 100
Ω
or over impedance in the operating frequency. The gain is a
peak in the operating frequency band, and suppressed at lower frequencies.
The recommendable inductance can be chosen from example of actual application components list as shown
above.
CAPACITORS FOR THE V
CC
, INPUT, AND OUTPUT PINS
Capacitors of 1 000 pF are recommendable as the bypass capacitor for the Vcc pin and the coupling capacitors
for the input and output pins.
The bypass capacitor connected to the Vcc pin is used to minimize ground impedance of Vcc pin. So, stable bias
can be supplied against Vcc fluctuation.
The coupling capacitors, connected to the input and output pins, are used to cut the DC and minimize RF serial
impedance. Their capacitance are therefore selected as lower impedance against a 50
Ω
load. The capacitors thus
perform as high pass filters, suppressing low frequencies to DC.
To obtain a flat gain from 100 MHz upwards, 1 000 pF capacitors are used in the test circuit. In the case of under
10 MHz operation, increase the value of coupling capacitor such as 10 000 pF. Because the coupling capacitors are
determined by equation, C = 1/(2πRfc).
Data Sheet P12680EJ3V0DS
5
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