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参数资料
| 型号： | LC89977M |
| 元件分类： | 消费家电 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO14 |
| 封装： | MFP-14 |
| 文件页数： | 5/7页 |
| 文件大小： | 214K |
| 代理商： | LC89977M |
No. 5545-5/7
LC89977M
5. Measure the C-OUT output when a 200-mVp-p sine wave is input to C-IN1 and C-IN2, and when a 500-mVp-p sine
wave is input, and calculate the gain difference as follows:
The output for a 500-mVp-p input [mVp-p]
The output for a 200-mVp-p input [mVp-p]
LNC = 20log
[dB]
500 [mVp-p]
200 [mVp-p]
Test Frequencies
LNC-1
4.429662MHz (PAL/GBI)
LNC-2
4.425694MHz (4.43NTSC)
6. Measure the 3fsc (13.3 MHz) and fsc (4.43 MHz) components in the C-OUT output with no input signal.
7. Measure the noise in the C-OUT output with no input signal.
Measure the noise with a noise meter with a 200-kHz high-pass filter and a 5-MHz low-pass filter.
8. Input a 350-mVp-p sine wave to C-IN1 and C-IN2. Let V1 be the C-OUT output when SW3 is set to the a position,
and let V2 be the C-OUT output when SW3 is set to the ’b’ position.
V2 [mVp-p] — V1 [mVp-p]
ZOC =
× 500 [dB]
V1 [mVp-p]
Test Frequencies
ZOC-1: 4.429662 MHz (PAL/GBI)
ZOC-2: 4.425694 MHz (4.43NTSC)
9. The delay time in the C-OUT output with respect to the C-IN1 input. This is the CCD 1-bit delay.
10. The pin output voltage (clamp voltage) with no input signal.
11. Measure the Y-OUT output with a 200-kHz 400-mVp-p sine wave input to Y-IN.
Y-OUT output [mVp-p]
GVY = 20log
[dB]
400 [mVp-p]
12. Measure the Y-OUT output when a 200-kHz 200-mVp-p sine wave is input to Y-IN, and when a 3.3-MHz
200-mVp-p sine wave is input.
The Y-OUT output for a 3.3-MHz input [mVp-p]
GFY = 20log
[dB]
The Y-OUT output for a 200-kHz input [mVp-p]
Here, adjust Vbias so that the clamp level is +250 mV.
13. Apply a 5-step staircase wave (as in the figure below) to Y-IN, and measure the differential gain and differential
phase in the Y-OUT output using a vector scope.
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