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UPC1686GV

NEC's 900 MHz SILICON MMIC DOWN CONVERTER

California Eastern Laboratories. 

UPC1686GV

ABSOLUTE MAXIMUM RATINGS1 (TA = 25°C)

SYMBOLS

PARAMETERS

UNITS RATINGS

VCC

PT

TOP

TSTG

Supply Voltage

Total Power Dissipation2

Operating Temperature

Storage Temperature

V

6

mW

250

°C

-40 to +85

°C -65 to +150

Notes:

1. Operation in excess of any one of these parameters may result

in permanent damage.

2. TA = 85°C mounted on 50 x 50 x 1.6 (mm) PWB (glass-epoxy).

ORDERING INFORMATION

PART NUMBER

QUANTITY

UPC1686GV-E1-A

1000/REEL

PIN DESCRIPTION

PIN

SYMBOL

NO.

1

OSC

Base

(Bypass)

2

OSC

Base

(Feedback)

3

OSC

Collector

(Coupling)

FUNCTION AND APPLICATION

Internal oscillator consists of a balanced

amplifier. Pins 2 and 3 should be externally

equipped with a tank resonator circuit in order to

oscillate with feedback loop.

Pin 1 should be grounded through a coupling

capacitor (~10 pF).

Pin 3 is an open collector. This pin should be

coupled through resistor or choke coil in order to

adjust Q and connect to supply voltage. In case

of unstable oscillation, lowering the Q will help to

stabilize the operation.

4

VCC

Supply voltage pin for the IC.

5

IFOUT

IF output pin. IF amplifier is designed as a single-

ended push-pull amplifier. This pin is an emitter

follower output with a wideband 50 Ω impedance.

6

GND

7

RF IN2

(Bypass)

8

RFIN1

GND pin for the IC.

Pins 7 and 8 are inputs to a double-balance

mixer. Either pin can be used for input and

bypass.

EQUIVALENT CIRCUIT

Vcc

VREF

31 2

To OSC

buffer

amp

From

IF pre amp

Vcc

From

OSC

buffer

RF

input

7&8

Vcc

5 IF

Output

To IF

amp

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