Datasheet > FMS6243MTC14X

FMS6243MTC14X

更新时间： 2024-01-12 23:09:09

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		驱动器
页数	文件大小	规格书
10页	467K
描述
Low-Cost, 3-Channel, SD Video Filter Drivers with External Delay Control

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技术参数
数据手册

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FMS6243MTC14X 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	TSSOP	包装说明：	TSSOP, TSSOP14,.25
针数：	14	Reach Compliance Code：	unknown
HTS代码：	8542.39.00.01	风险等级：	5.64
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	R-PDSO-G14
长度：	5 mm	功能数量：	1
端子数量：	14	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	TSSOP	封装等效代码：	TSSOP14,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	5 V
认证状态：	Not Qualified	座面最大高度：	1.2 mm
子类别：	Other Consumer ICs	最大压摆率：	34 mA
最大供电电压 (Vsup)：	5.25 V	最小供电电压 (Vsup)：	4.75 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子形式：	GULL WING	端子节距：	0.65 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	4.4 mm	Base Number Matches：	1

FMS6243MTC14X 数据手册

Signal Peaking Adjustment

Group Delay and Peaking Adjustment

Simultaneously

The peaking of a video input signal can be adjusted by

placing a peaking capacitor across the series-75ohm

resistor on the output of the FMS6243. Where the input

video signal to the FMS6243 has a soft roll-off, meaning

the input video signal is attenuated at 4Mhz by -0.5dB,

the Chroma/Luma gain is approximately -5% and fails a

system specification of +- 2.5%. This attenuation can be

adjusted by adding a 150pF capacitor across the series-

75ohm resistor on the output (see Figure 15). This brings

the attenuation at 4.0Mhz to approximately 0dB, giving a

Chroma/Luma gain of 0%. Figure 13 shows the peaking

effect of adding a peaking capacitor across the series-

75ohm resistor. The graph shows a 10pF delay capacitor

with a 10pF, 50pF, and 100pF peaking capacitor.

If both a group delay adjustment and a peaking adjust-

ment need to be incorporated into the system design, the

following methodology should be followed. Address the

group delay adjustment first, then the peaking adjus-

ment, because the group delay adjustment causes a

video signal attenuation at 4Mhz.

6.35

4.43MHz

3.58MHz

400KHz

6.30

6.25

6.20

6.15

6.10

6.05

6.00

5.95

5.90

10pF

40pF

80pF

6.40

6.35

10pF10pF

10pF50pF

10pF100pF

6.30

6.25

6.20

6.15

6.10

6.05

6.00

5.95

5.90

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

Frequency (MHz)

Figure 14. Frequency Response vs. Delay Cap. Value

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

4.5

5.0

Frequency (MHz)

Figure 13. Frequency Response Delay Capacitor vs.

Peaking Capacitor

V_CC

peaking

Delay Cap

Out1

DCAP1

GND1

IN1

VCC

GND4

OUT1

220ꢀF

peaking

In1

In2

In3

Out2

IN2

OUT2

220ꢀF

IN3

OUT3

Delay Cap

GND2

DCAP2

DCAP3

GND3

peaking

Out3

Delay Cap

220ꢀF

Figure 15. Schematic

FMS6243 Rev. 1.0.0

www.fairchildsemi.com

1...4 5 678 9 10

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