UPC8002GR Ver la hoja de datos (PDF) - NEC => Renesas Technology

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UPC8002GR

SECOND MIXER + IF AMPLIFIER FOR DIGITAL CORDLESS TELEPHONES

NEC => Renesas Technology 

Test Circuit Example 4. (IF amplifier phase fluctuation)

IF1 IN

19

330 pF

50 Ω

Attenuator

Network

analyzer

µPC8002

IF2 OUT

11

1000 pF

10 pF

10 kΩ

Caution The 10 pF capacitor value for IF2 OUT includes all the capacitance (board, pattern, etc.) applied

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

Test Circuit Example 5. (RSSI rise time, RSSI fall time)

... Time until RSSI output is within ±10 % of the final value)

IF1 IN

19

330 pF

50 Ω

IF1 OUT

17

IF2 IN

15

330 pF

50 Ω

RSSI OUT

10

10 pF

For IF1 input

For IF2 input

SG

10.7 MHz, _14 dBm

Input signal from SG

SG

10.7 MHz, _14 dBm

Storage

oscilloscope 1

Storage

oscilloscope 2

1 SEC

50 µSEC

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

to the pin.

21

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