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UPC8120T

VARIABLE GAIN AMPLIFIER SILICON MMIC FOR TRANSMITTER AGC OF DIGITAL CELLULAR TELEPHONE

NEC => Renesas Technology 

LLUSTRATION AND EXPLANATIONS OF EVALUATION BOARD

µPC8119T, µPC8120T

OUT

IN

Vcc monitor line

VAGC

VCC

EXPLANATION

<1> This board prints the pattern inductor which inductance is as same as jumper wire in TEST CIRCUITs

(inductance: approx. 5 nH to 6 nH).

<2> Input leakage to VCC pin can be monitored through ‘VCC monitor line’. This leakage can be suppressed with π

type low pass filter attached to VCC pin. The filter performance depends on parallel capacitors.

<3> After adjusted low pass filter, monitor line should be removed before output matching circuit is attached.

EVALUATION BOARD CHARACTERS

(1) 35 µm thick double-sided copper clad 35 × 42 × 0.4 mm polyimide board

(2) Back side: GND pattern

(3) Solder plated patterns

(4)

: Through holes

ATTENTION Test circuit or print pattern in this sheet is for testing IC characteristics.

In the case of actual system application, external circuits including print pattern and matching circuit

constant of output port should be designed in accordance with IC’s S parameters and environmental

components.

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