UPC2721GR-E1 データシートの表示（PDF） - NEC => Renesas Technology

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UPC2721GR-E1

GENERAL PURPOSE L-BAND DOWN CONVERTER ICs

NEC => Renesas Technology 

µPC2721, µPC2722

PIN

PIN VOLT

SYMBOL

No.

TYP.(V)

Function and Explanation

1

OSC base

2.9

(bypass)

Internal oscillator consists in balance

amplifier. 2 pin and 3 pin should be

externally equipped with tank resonator

circuit in order to oscillate with feedback

loop.

2

OSC base

2.9

(feedback)

1 pin should be grounded through

coupling capacitor to 0.5 pF.

3

OSC

5.0

collector

(coupling)

3 pin is defined as open collector. This pin

should be coupled through resistor or

chock coil in order to adjust Q and be

supplied voltage. In case of abnormal

oscillation, adjust its Q lower to stabilize

the operation.

Equivalent circuit

2

VCC

3

1

4

VCC

5.0

Supply voltage pin for the IC.

5

IF output

µPC2721

2.9

In µPC2721, IF amplifier is designed as

single-end push-pull amplifier.

This pin is assigned for the emitter follower

output with 50 Ω constant resistive

impedance in wide band.

µPC2721

5

µPC2722

In µPC2722, IF amplifier is designed as

µPC2722

balance amplifier.

5

5.0

This pin is assigned for the open collector

output with high impedance dependent on

external inductance.

6

GND

0.0

7

RF input 2

2.4

(bypass)

8

RF input 1

2.4

GND pin for the IC.

7 pin and 8 pin are inputs for mixer

designed as double balanced type. Either

pin can be assigned for input and another

for ground.

7

Data Sheet P11102EJ4V0DS00

8

3

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