UPC2753GR 데이터 시트보기 (PDF) - NEC => Renesas Technology
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UPC2753GR Datasheet PDF : 6 Pages
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PIN FUNCTIONS
Pin No.
16
Symbol
VAGC
Pin Voltage
0 to 2.4
(Supply voltage)
17
LO Bypass
2.5
18
LO Input
2.5
Description
Pin 16 is the gain control pin for
the AGC amplifier. The gain of
the AGC amplifier is controlled by
the applied voltage on this pin.
Pins 17 and 18 are the LO input
pins of the mixer. The LO Bypass
pin should be connected to GND
via a bypass capacitor.
UPC2753GR
Equivalent Circuit
MIX
AGC Amp
RF
VCC
5
LO
16
VCC
To MIX
To MIX
18
17
15
VCC (DC)
—
Pin 15 is the VCC supply pin for
—
the downconverter block. This pin is
independent of the VCC pin for the IF
amplifier. Apply 3 V to pin 15.
14
VCC (IF)
—
Pin 14 is the VCC supply pin for
—
the IF amplifier. This pin is
independent of the VCC pin for the
downconverter unit. Apply 3 V to
pin 16.
2
GND
—
This pin is the ground pin for the
—
9
entire chip. Therefore the ground of
12
the IF downconverter and IF amplifier
19
blocks are not separated. The ground
pattern to be connected to this pin
should be formed as wide as
possible to minimize its impedance.
10
GND
—
Pins 10 and 11 are not connected
—
11
to the internal circuits. Connecting
these pins to GND is recom-
mended, though these pins may
be left unconnected.
1
NC
—
Pins 1 and 20 are the output pins
—
of the mixer block. These pins are
used to monitor the signal output
from the IF amplifier and to be
20
NC
input to the AGC amplifier. When
the IC is actually used, these pins
should be left opened.
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