DATA SHEET
µ
PC2791TB,
µ
PC2792TB
5 V, SUPER MINIMOLD SILICON MMIC
VHF-UHF WIDEBAND AMPLIFIER
BIPOLAR ANALOG INTEGRATED CIRCUITS
DESCRIPTION
The
µ
PC2791TB and
µ
PC2792TB are silicon monolithic integrated circuits designed as 2nd IF buffer amplifier for
DBS tuners. These ICs are packaged in super minimold package which is smaller than conventional minimold. So,
in the case of reducing your system size,
µ
PC2791TB and
µ
PC2792TB are suitable. Among the 6-pin mini/super-
minimold amplifiers,
µ
PC2791TB and
µ
PC2792TB have unique pin locations taken over from conventional 4-pin
minimold
µ
PC1675G,
µ
PC1676G and
µ
PC1688G.
These ICs are manufactured using NEC’s 10GHz f
T
NESAT™ II AL silicon bipolar process. This process uses
silicon nitride passivation film.
The material can protect chip surface from external pollution and prevent
corrosion/migration. Thus, these IC have excellent performance, uniformity and reliability.
FEATURES
•
•
•
•
High-density surface mounting : 6-pin super minimold package (2.0
×
1.25
×
0.9 mm)
Supply voltage
Wideband response
Power gain
: V
CC
= 4.5 to 5.5 V
:
µ
PC2791TB; f
u
= 1.9 GHz TYP. @3 dB bandwidth
µ
PC2792TB; f
u
= 1.2 GHz TYP. @3 dB bandwidth
:
µ
PC2791TB; G
P
= 12 dB TYP. @f = 500 MHz
µ
PC2792TB; G
P
= 22 dB TYP. @f = 500 MHz
APPLICATION
•
400 MHz band 2nd IF buffer amplifiers in DBS tuners (2nd frequecy converter block), etc.
ORDERING INFORMATION
Part Number
Package
6-pin super minimold
Marking
C2S
C2T
Supplying Form
Embossed tape 8 mm wide.
1, 2, 3 pins face to perforation side of the tape.
Qty 3kpcs/reel.
µ
PC2791TB-E3
µ
PC2792TB-E3
Remark
To order evaluation samples, please contact your local NEC sales office. (Part number for sample
order:
µ
PC2791TB,
µ
PC2792TB)
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. P11863EJ2V0DS00 (2nd edition)
Date Published February 2000 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1996, 2000
µ
PC2791TB,
µ
PC2792TB
PIN CONNECTIONS
(Top View)
(Bottom View)
4
5
6
4
5
6
3
2
1
4
5
V
CC
GND
INPUT
Pin No.
1
2
3
Pin Name
GND
GND
OUTPUT
3
2
1
Marking is an example of
µ
PC2791TB
C2S
6
Caution
µ
PC2791TB,
µ
PC2792TB pin locations are different from the other 6-pin mini/super-minimold
amplifiers.
PRODUCT LINE-UP (T
A
= +25°C, V
CC
= 5.0 V, Z
S
= Z
L
= 50
Ω
)
°
f
u
(GHz)
1.9
P
o(sat)
(dBm)
+4.0
G
P
(dB)
12
NF
(dB)
5.5
I
CC
(mA)
17
Part Number
Package
4-pin minimold
6-pin super minimold
Marking
C1A
C2S
C1C
C1B
C2T
µ
PC1675G
µ
PC2791TB
µ
PC1688G
µ
PC1676G
µ
PC2792TB
1.1
1.2
+4.0
+5.0
21
22
20
4.0
4.5
3.5
19
19
4-pin minimold
4-pin minimold
6-pin super minimold
Remarks
Caution
Typical performance. Please refer to ELECTRICAL CHARACTERISTICS in detail.
This document is to specified for
µ
PC2791TB and
µ
PC2792TB. For the other part numbers
mentioned in this document, the data sheet of each part number should be referred.
SYSTEM APPLICATION EXAMPLE
Example of DBS tuners (2nd frequecy converter block)
1st IF input
from DBS converter
BPF
MIX
SAW
AGC Amp.
FM Demo.
Baseband output
µ
PC2712TB
µ
PC2711TB
µ
PC2791TB
µ
PC2792TB
OSC
Prescaler
PLL Synth.
µ
PC2711TB
LPF
2
Data Sheet P11863EJ2V0DS00
µ
PC2791TB,
µ
PC2792TB
PIN EXPLANATION
Applied
Voltage
(V)
0
Pin
Voltage
Note
(V)
Pin
No.
1
2
5
Pin
Name
GND
Function and Applications
Internal Equivalent Circuit
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 impedance difference.
Signal output pin. A internal matching
circuit, configured with resistors, enables
50
Ω
connection over a wide band.
This pin must be coupled to next stage
with capacitor for DC cut.
Power supply pin. This pin should be
externally equipped with bypass
capacity to minimize ground
impedance.
Signal input pin. A internal matching
circuit, configured with resistors, enables
50
Ω
connection over a wide band.
A multi-feedback circuit is designed to
cancel the deviations of h
FE
and
resistance.
This pin must be coupled to front stage
with capacitor for DC cut.
µ
PC2791TB
4 V
CC
3 OUT
3
OUTPUT
IN 6
3.92
3.96
2
GND
5
1 GND
4
V
CC
4.5 to 5.5
µ
PC2792TB
4 V
CC
3 OUT
6
INPUT
1.11
IN 6
0.92
2
GND
5
1 GND
Note
Pin voltage is measured at V
CC
= 5.0 V. Above:
µ
PC2791TB, Below:
µ
PC2792TB
Data Sheet P11863EJ2V0DS00
3
µ
PC2791TB,
µ
PC2792TB
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Power Dissipation
Symbol
V
CC
P
D
T
A
= +25°C
Mounted on doublesided copper clad
50
×
50
×
1.6 mm epoxy glass PWB (T
A
= +85°C)
Conditions
Ratings
6
200
−40
to +85
−55
to +150
T
A
= +25°C
+10
Unit
V
mW
°C
°C
dBm
Operating Ambient Temperature
Storage Temperature
Input Power
T
A
T
stg
P
in
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Operating Ambient Temperature
Symbol
V
CC
T
A
MIN.
4.5
−40
TYP.
5.0
+25
MAX.
5.5
+85
Unit
V
°C
ELECTRICAL CHARACTERISTICS (T
A
= +25°C, V
CC
= 5.0 V, Z
S
= Z
L
= 50Ω)
°
Ω
µ
PC2791TB
Parameter
Circuit Current
Power Gain
Noise Figure
Upper Limit Operating Frequency
Symbol
I
CC
G
P
NF
f
u
Test Conditions
MIN.
No signal
f = 500 MHz
f = 500 MHz
3 dB down from
flat gain
f = 500 MHz
f = 500 MHz
f = 500 MHz
f = 500 MHz,
P
in
= 0 dBm
12
10
1.6
TYP.
17
12
5.5
1.9
MAX.
22
14
7.0
MIN.
14
17
1.0
TYP.
19
20
3.5
1.2
MAX.
24
22
6.0
mA
dB
dB
GHz
µ
PC2792TB
Unit
Isolation
Input Return Loss
Output Return Loss
Saturated Output Power
ISL
RL
in
RL
out
P
O(sat)
20
9
8
+2.0
24
12
11
+4.0
24
12
9
+3.0
28
15
12
+5.0
dB
dB
dB
dBm
4
Data Sheet P11863EJ2V0DS00
µ
PC2791TB,
µ
PC2792TB
TEST CIRCUIT
V
CC
1 000 pF
C
3
4
50
Ω
IN
1 000 pF
C1
6
3
C2
1 000 pF
50
Ω
OUT
1, 2, 5
EXAMPLE OF APPLICATION CIRCUIT
V
CC
1 000 pF
C
3
1 000 pF
C
6
4
50
Ω
IN
1 000 pF
C
1
4
3
C
4
1 000 pF
C
5
C
2
6
6
1 000 pF
R
1
50 to 200
Ω
3
1 000 pF
50
Ω
OUT
1, 2, 5
To stabilize operation,
please connect R
1
, C
5
1, 2, 5
The application circuits and their parameters are for reference only and are not intended for use in actual design-ins.
CAPACITORS FOR THE V
CC
, INPUT AND OUTPUT PINS
1 000 pF capacitors are recommendable as bypass capacitor for V
CC
pin and coupling capacitors for input/output
pins.
Bypass capacitor for V
CC
pin is intended to minimize V
CC
pin’s ground impedance. Therefore, stable bias can be
supplied against V
CC
fluctuation.
Coupling capacitors for input/output pins are intended to minimize RF serial impedance and cut DC.
To get flat gain from 100 MHz up, 1 000 pF capacitors are assembled on the test circuit. [Actually, 1 000 pF
capacitors give flat gain at least 10 MHz. In the case of under 10 MHz operation, increase the value of coupling
capacitor such as 2 200 pF. Because the coupling capacitors are determined by the equation of C = 1/(2
π
fZs).]
Data Sheet P11863EJ2V0DS00
5
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