M52342FP 데이터 시트보기 (PDF) - Renesas Electronics

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M52342FP

PLL-Split VIF/SIF IC

Renesas Electronics 

M52342FP

µAFT Sensitivity, V2H Maximum AFT Voltage, V2L Minimum AFT Voltage

1. Input SG10 into VIF IN, and set the frequency of SG10 so that the voltage of AFT output TP2 is 3 V. This

frequency is named f (3).

2. Set the frequency of SG10 so that the AFT output voltage is 2 V. This frequency is named f (2).

3. IN the graph, maximum and minimum DC voltage are V2H and V2L, respectively.

TP2

Voltage

V2H

3V

2V

V2L

f (3)

f (2) f (MHz)

µ

=

f

1000 (mV)

(2) – f (3) (kHz)

(mV/kHz)

IM Intermodulation

1. Input SG11 into VIF IN, and measure EQ output TP22A with an oscilloscope.

2. Adjust AGC filter voltage V10 so that the minimum DC level of the output waveform is 1.0 V.

3. At this time, measure, TP22A with a spectrum analyzer.

The intermodulation is defined as a difference between 920 kHz and 3.58 MHz frequency components.

LIM Limiting Sensitivity

1. Input SG17 (SG22) into SIF input, and measure the 400 Hz component level of AF output TP12.

2. Input SG19 (SG24) into SIF input, and measure the 400 Hz component level of AF output TP12.

3. The input limiting sensitivity is defined as the input level when a difference between each 400 Hz components of

audio output (TP12) is 30 dB, as shown below.

Audio output

(mVrms)

30 dB

Audio output while

SG17 (SG22) is input

Audio output while

SG19 (SG24) is input

(dBµ) SIF input

AMR AM Rejection

1. Input SG18 (SG23) into SIF input, and measure the output level of AF output TP12. This level is named VAM.

2. AMR is;

VoAF (mVrms)

AMR = 20 log VAM (mVrms) (dB)

Rev.2.00 Jun 14, 2006 page 8 of 18

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