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參數資料
| 型號： | LC89971M |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數： | 4/9頁 |
| 文件大小： | 140K |
| 代理商： | LC89971M |
4. Measure the comb depth from the C-OUT output with a 350 mVp-p sine wave signal of frequency fa input to C-IN1
and C-IN2 and with a frequency of fb input.
CD = 20 log
[dB]
Test frequencies
fa
fb
CD-1
4.431395 MHz
4.435303 MHz (PAL/GBI)
CD-2
3.571628 MHz
3.575561 MHz (PAL/M)
CD-3
3.571628 MHz
3.575561 MHz (NTSC/M)
5. Measure the C-OUT output with a 200 mVp-p sine wave signal input to C-IN1 and C-IN2 and with 500 mVp-p sine
wave signal input and calculate the difference in the gains.
LNC = 20 log
[dB]
Test frequencies
LNC-1
4.431395 MHz (PAL/GBI)
LNC-2
3.571628 MHz (PAL/M)
LNC-3
3.571628 MHz (NTSC/M)
6. Measure the 4 fsc (14.3 MHz) and fsc (3.58 MHz) components in the C-OUT output with no input.
7. Measure the noise in the C-OUT output with no input.
Measure the noise with a noise meter set up with a 200 kHz high-pass filter and a 5 MHz low-pass filter.
8. Let V1 be the C-OUT output with a 350 mVp-p sine wave input to C-IN1 and C-IN2 and SW3 set to a, and let V2 be
the C-OUT output with SW3 set to b.
ZOC =
× 500 []
Test frequencies
ZOC-1
4.431395 MHz (PAL/GBI)
ZOC-2
3.571628 MHz (PAL/M)
ZOC-3
3.571628 MHz (NTSC/M)
9. The C-OUT output delay time with respect to inputs to C-IN1. (the CCD 2.5 bit delay)
10. Y-OUT voltage (clamp voltage) with no signal input.
11. Measure the Y-OUT output with a 200 kHz 400 mVp-p sine wave input to Y-IN.
GVY = 20 log
[dB]
12. Measure the Y-OUT output with a 200 kHz 200 mVp-p sine wave input to Y-IN and with a 3.3 MHz 200 mVp-p
sine wave input.
GFY = 20 log
[dB]
Note that Vbias should be adjusted so that the circuit is biased to the clamp level plus 250 mV.
Y-OUT output with a 3.5 MHz input [mVp-p]
Y-OUT output with a 200 kHz input [mVp-p]
Y-OUT output [mVp-p]
400 [mVp-p]
V2 [mVp-p] – V1 [mVp-p]
V1 [mVp-p]
Output for a 200 mVp-p input [mVp-p]
200 [mVp-p]
Output for a 500 mVp-p input [mVp-p]
500 [mVp-p]
C-OUT output with fb input [mVp-p]
C-OUT output with fa input [mVp-p]
No. 4900-4/9
LC89971, 89971M
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