LA76070 查看數據表（PDF） - SANYO -> Panasonic

零件编号

产品描述 (功能)

比赛名单

LA76070

NTSC Color Television IC

SANYO -> Panasonic 

LA76070

VIF Block Input Signals and Measurement Conditions

1. All input signals are applied to PIF IN (pin 10) as shown in the measurement circuit diagrams.

2. The input signal voltage values are all the value of VIF IN (pin 10) as shown in the measurement circuit diagrams.

3. The table below lists the input signals and their levels.

Input signal

Waveform

Condition

SG1

45.75 MHz

SG2

42.17 MHz

SG3

41.25 MHz

SG4

Variable frequency

SG5

SG6

45.75 MHz

87.5 % video modulation

10-step staircase waveform

(Subcarrier: 3.58 MHz)

45.75 MHz

87.5 % video modulation

Sweep signal

(APL: 50 IRE

Sweep signal level: 40 IRE)

SG7

45.75 MHz

87.5 % video modulation

Flat field signal

4. Perform the following D/A converter adjustments in the order listed before testing.

Item

APC DAC

PLL DAC

Video

possible

Measurement point

Input signal

13

No signal, IF.AGC.DEF = 1

13

SG1, 93 dBµ

45

SG7, 93 dBµ

Adjustment

Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible

Set up the DAC value so that the pin 13 DC voltage is as close to 3.8 V as possible

Set up the DAC value so that the pin 45 output level is as close to 2.0 V p-p as

No. 5844-10/27

Share Link: