UPC2721(1997) データシートの表示（PDF） - NEC => Renesas Technology
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UPC2721 Datasheet PDF : 6 Pages
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UPC2721GR, UPC2722GR,
ABSOLUTE MAXIMUM RATINGS1 (TA = 25°C)
SYMBOLS
PARAMETERS
UNITS RATINGS
VCC
Supply Voltage2
V
6
PT
Power Dissipation3
mW
250
TOP
Operating Temperature
°C
-40 to +85
TSTG
Storage Temperature
°C -65 to +150
Notes:
1. Operation in excess of any one of these parameters may result
in permanent damage.
2. Recommended operating VCC range is 4.5 to 5.5 V max.
3. TA = +85°C mounted on a 50 x 50 x 1.6 mm thick glass epoxy
board with double sided copper.
PIN DESCRIPTIONS
PIN
SYMBOL
PIN VOLT
NO.
TYP (V)
1
OSC
2.9
base
(bypass)
2
OSC
2.9
base
(feedback)
3
OSC
5.0
collector
(coupling)
4
VCC
5.0
5
IF Output
UPC2721
2.9
DESCRIPTION
Internal oscillator consists of a
balance amplifier. Pin 2 and pin 3
should be externally equipped with a
tank resonator circuit in order to
oscillate with feedback loop.
Pin 1 should be grounded through
coupling capacitor ~0.5 pF.
Pin 3 is an open collector. This pin should
be coupled through resistor or choke coil
in order to adjust Q and connect the
supply voltage.
Supply voltage pin for the IC.
In the UPC2721 the amplifier is designed
as single-ended push-pull amplifier. This
pin is an emitter follower output with a
wideband 50 Ω impedance.
EQUIVALENT CIRCUIT
2
3
1
Vcc
UPC2721
40 Ω
5
UPC2722
5.0
In the UPC2722 the IF amplifier is
designed as a balanced amplifier. This pin
is an open collector output with high
impedance dependent on external
inductance.
UPC2722
6
GND
0.0
GND pin for the IC.
7
RF input2
2.4
(bypass)
Pin 7 and pin 8 are inputs to a double-
balanced mixer. Either pin can be
assigned for input or ground.
8
RF input1
2.4
7
5
8
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