MC1377DW

更新时间： 2024-01-08 18:35:04

品牌	Logo	应用领域
摩托罗拉 - MOTOROLA		电视编码器
页数	文件大小	规格书
18页	646K
描述
COLOR TELEVISION RGB to PAL/NTSC ENCODER

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技术参数
数据手册

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MC1377DW 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	DIP, DIP20,.3	Reach Compliance Code：	unknown
风险等级：	5.92	商用集成电路类型：	COLOR SIGNAL ENCODER
JESD-30 代码：	R-PDIP-T20	JESD-609代码：	e0
端子数量：	20	最高工作温度：	70 °C
最低工作温度：		封装主体材料：	PLASTIC/EPOXY
封装代码：	DIP	封装等效代码：	DIP20,.3
封装形状：	RECTANGULAR	封装形式：	IN-LINE
认证状态：	Not Qualified	子类别：	Color Signal Converters
表面贴装：	NO	技术：	BIPOLAR
温度等级：	COMMERCIAL	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	THROUGH-HOLE	端子节距：	2.54 mm
端子位置：	DUAL

MC1377DW 数据手册

MC1377

I/Q System versus (R–Y)/(B–Y) System

The NTSC standard calls for unequal bandwidths for I and

Q (Figure 21). The MC1377 has no means of processing the

unequal bandwidths because the I and Q axes are not used

(Figure 22) and because the outputs of the (R–Y) and the

(B–Y) modulators are added before being output at Pin 13.

Therefore, any bandwidth reduction intended for the chroma

information must be performed on the composite chroma

information. This is generally not a problem, however, since

most monitors compromise the standard quite a bit.

Figure 23 shows the typical response of most monitors

and receivers. This figure shows that some crosstalk

between luma and chroma information is always present.

The acceptability of the situation is enhanced by the limited

ability of the CRT to display information above 2.5 MHz. If the

signal from the MC1377 is to be used primarily to drive

conventional non–comb filtered monitors or receivers, it

would be best to reduce the bandwidth at the MC1377 to that

of Figure 23 to lessen crosstalk.

Figure 20. NTSC Standard Spectral Content

Figure 21. Color Vector Relationship

(Showing Standard Colors)

(R–Y)

Red

(104°)

Purple

(61

(90

)

°)

Luminance

Q (33°)

(123°)

Yellow

(168

)

(B–Y) 0

Color Burst

(180

1.0

2.0

3.0

4.0

)

Blue

(348°)

f, FREQUENCY (MHz)

Green

(241

Cyan

(284°)

)

Figure 22. Frequency Response of

Typical Monitor/TV

Chroma

Channel

Gain

Luminance

Channel

1.0

2.0

3.0 3.58 4.0

f, FREQUENCY (MHz)

MOTOROLA ANALOG IC DEVICE DATA

1...10 11 121314 15 16...18

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