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UPC8002GR

SECOND MIXER + IF AMPLIFIER FOR DIGITAL CORDLESS TELEPHONES

NEC => Renesas Technology 

µPC8002

Test Circuit Example 6. (Power-on rise time)

Mixer section : Time until the difference between the local input pin power-on and

power-off voltage reaches 90 %

IF section : Time until RSSI output is within ±10 % of the power-on value.

PD

LO IN

RSSI OUT

1

5

10

10 pF

SG

Storage

oscilloscope 1

Storage

oscilloscope 2

Input signal from SG

3V

0V

1 SEC

50 µSEC

Remark Power-on input voltage (VPO) rise time: 10 ns

Caution The 10 pF capacitor value for RSSI OUT includes all the capacitances (board, pattern, etc.)

applied to the pin. Ensure that the recommended load condition (10 pF) is not exceeded.

Test Circuit Example 7. (Power-off fall time)

PD

VCC (IF OUT)

1

12

VCC (IF)

3

VCC (MIX)

4

VCC

SG

VCC

Storage

oscilloscope

Current probe

Input signal from SG

3V

0V

1 SEC

22

50 µSEC

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