UPC8002GR Просмотр технического описания (PDF) - NEC => Renesas Technology

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UPC8002GR

SECOND MIXER + IF AMPLIFIER FOR DIGITAL CORDLESS TELEPHONES

NEC => Renesas Technology 

Test Circuit Example 2. (Power supply current, power-off power supply current)

VCC (IF)

3

VCC (IF OUT)

12

VCC (MIX)

4

µPC8002

1000 pF

A

VCC

1 µF 1000 pF

A

VCC

1µ F 1000 pF

Test Circuit Example 3. (Limiting sensitivity, IF amplifier output amplitude, IF amplifier output amplitude rise

time, IF amplifier output amplitude fall time, RSSI linearity, RSSI slope, RSSI

intercept, RSSI output voltage, RSSI temperature stability, RSSI output ripple)

IF1 IN

19

330 pF

50 Ω

RSSI OUT

10

10 pF

Digital voltmeter

SG (Signal generator)

10.7 MHz

Oscilloscope

IF2 OUT

11

1000 pF

10 kΩ

10 pF

Spectrum

analyzer

Oscilloscope

Caution

The 10 pF capacitor value for IF2 OUT and RSSI OUT includes all the capacitances (board,

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

exceeded for IF2 OUT and RSSI OUT.

20

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