µPC2711TB, µPC2712TB
SYSTEM APPLICATION EXAMPLE
RF unit block of DBS tuners
1st IF input from
DBS converter
Baseband
output
Mixer
BPF
SAW
AGC Amp.
FM Demod.
µPC2712TB
µPC2711TB
µPC2711TB
PLL Synth.
Prescaler
OSC
LPF
PIN EXPLANATIONS
Applied Pin
Pin
Pin Name
Function and Applications
Internal Equivalent Circuit
Voltage Voltage
No.
(V)Note
(V)
1.00
1
INPUT
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 hFE and resistance. This pin
must be coupled to signal source with
capacitor for DC cut.
6
4
0.97
4.40
4
6
OUTPUT
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.
1
4.12
VCC
4.5 to 5.5
Power supply pin. This pin should be
externally equipped with bypass capacitor to
minimize ground impedance.
2
3
5
GND
0
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.
2
3
5
Note Pin voltage is measured at VCC = 5.0 V, Above: µPC2711TB, Below: µPC2712TB
3
Data Sheet P11510EJ3V0DS00
NEC [ NEC ]
