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參數(shù)資料
| 型號(hào)： | REJ03F0023_M61140FP |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | TUNER SINGLE CHIP |
| 中文描述： | 調(diào)諧器單芯片 |
| 文件頁數(shù)： | 24/29頁 |
| 文件大?。?/td> | 571K |
| 代理商： | REJ03F0023_M61140FP |
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M61140FP
Rev.1.2, Apr.16.2004, page 24 of 28
10. AFT sensitivity, Maximum AFT voltage, Minimum AFT voltage
1. Input SG10 to VIF IN, and set the frequency of SG10 so that the voltage of AFT output TP42 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 shown below, maximum and minimum DC voltage are V42H and V42L, respectively.
1000mV
f(2)-f(3) (KHz)
V42
3V
2V
f(3)
f(2)
V42H
V42L
μ=
(mV/KHz)
11. AF S/N
1. Input SG19 to LIM IN, and measure the output noise level of Audio output (TP40). This level is named VN.
VoAF
VN
S/N=20log
(dB)
12. Limiting Sensitivity
1. Input SG14 to LIM IN, and measure the 1kHz component level of AF output TP40.
2. Input SG17 to LIM IN, and measure the noise level of AF output TP40 .
3. The input limiting sensitivity is defined as the input level when the difference between each 1kHz components
of audio output (TP40) is 30dB, as shown below.
AF
30dB
Audio output while SG14 is input.
Audio output while SG17 is input.
13. AM Rejection
1. Input SG15 to LIM IN, and measure the output level of Audio output (TP40). This level is named VAM.
2. AMR is
Vo AF (mVrms)
(mVrms)
VAM
AMR=20Log
(dB)
14. Xin sensitivity of external signal
1. Input data that Control byte data CP,T2,T1,T0 is "0100" and Rsa,Rsa is"01"
2. The Reference frequency is output to Pin 22, measure the frequency with counter.
3. Input sensitivity is defined as the input level when the frequency is less than plus-or-minus 1ppm of 31.25kHz.
15. Freerun frequency
1. Input data that Control byte data CP,T2,T1,T0 is "01X".
2. The Reference frequency is output to Pin 42, measure the frequency with counter.
This frequency is named fmoni.
Freerun frequency (foUS) is 52.9524[MHz] - fmoni x 9 [MHz]
Freerun frequency (foJP) is 65.9512[MHz] - fmoni x 9 [MHz]
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