FMS6413 [FAIRCHILD]

Single Channel Video Driver with Integrated Filter and Clamp; 单路视频驱动器，集成滤波器和钳位


型号：	FMS6413
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Single Channel Video Driver with Integrated Filter and Clamp 单路视频驱动器，集成滤波器和钳位驱动器
文件：	总7页 (文件大小：35K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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FMS 6 4 1 3

S in g le Ch a n n e l Vid e o Drive r w it h In t e g ra t e d Filt e r

a n d Cla m p

Video Features

General Description

• Integrated Video Low Pass reconstruction ﬁlter

• Integrated output driver provides a low impedance output

and delivers 2Vp-p (6dB gain) composite video into

150Ω.

The FMS6413 Single Channel Video Filter – Driver Chip

offers comprehensive video ﬁltering for set top box or DVD

applications. This part consists of a 4^thorder video Low

Pass ﬁlter for video ﬁltering. This device integrates a video

driver so that it can directly drive to the outside world. There

is also an integrated clamp circuit that allows the part to DC

restore.

• 7.1MHz 4^thorder video ﬁlter

• 0.4% differential gain with 0.4° differential phase

• Integrated DC Restore / Clamp Circuitry

The video output is ﬁltered at 7.1MHz and buffered to drive

2Vp-p into an AC coupled 150Ω load with up to 35pF of

load capacitance at the output pin. The ﬁlter approximates a

4th-order Butterworth characteristic with an optimization

toward low overshoot and ﬂat group delay. Likewise, the

driver is capable of driving a 75Ω load at 1Vp-p. There is an

option for the video output to be DC coupled which limits

the drive to 1 output.

Applications

• CCTV

• DVD players

• Televisions

• HDTV

• Personal Video Recorders (PVRs)

• Video On Demand (VOD)

• Cable and Satellite Set top boxes

Block Diagram

SYNC STRIP,

REFERENCE,

AND TIMING

VIDEO_OUT

VIDEO_IN

REV. 1.0.2 6/27/02

FMS6413

Pin Conﬁguration

FMS6413

8-Pin SOIC (S08)

VIDEO_IN VIDEO_OUT

VCC_VIDEO

GND_VIDEO

Pin Description

Video Section

Pin#

Type

Description

VIDEO_IN

VIDEO_OUT

Input

Video Input

Output Video Output: This pin is the filtered video output

Power/Ground Pins

Pin# Pin

Type

Power

Description

VCC_VIDEO

+5 VDC for Video

GND_VIDEO

Ground for Video

Reserved (Need to Float)

REV. 1.0.2 6/27/02

FMS6413

Functional Description

DC level. The net result is that the average input current is

zero. Any change in the input coupling capacitor’s value will

inversely alter the amount of tilt per line. Such a change will

also linearly affect the clamp response time. This product is

robust and stable under all stated load and input conditions.

Capacitive bypassing VCC directly to ground ensures this

performance.

Introduction

The FMS6413 is a monolithic continuous time video ﬁlter -

driver designed for reconstructing the video signals from a

D/A source. This chip is intended for use in applications

with AC coupled input and AC coupled outputs. (See

Figure 1) The reconstruction ﬁlter approximates a 4th-order

Butterworth characteristic with an optimization toward low

over-shoot and ﬂat group delay. The video output is capable

of driving 2VP-P into an AC coupled 150Ω video load, with

up to 35pF of load capacitance at the output pin. The channel

is clamped during sync to establish the appropriate output

voltage swing range. Thus the input coupling capacitor does

not behave according to the conventional RC time constant.

Clamping for the video channel settles to less than 10mv

within 5ms of a change in video input source. In most

applications the input coupling capacitor is 0.1µF. The input

typically sinks 1µA during active video, which nominally

tilts a horizontal line by about 2mV at the Video output.

During sync, the clamp typically sources 20µA to restore the

Video I/O

The video input is driven by either a low impedance source

of 1VP-P or the output of a 75Ω terminated line. The input is

required to be AC coupled via a 0.1µF coupling capacitor

which allows for a settling time of 5ms. The video output is

capable of driving an AC coupled 150Ω load at 2VP-P, or

1VP-P into a 75Ω load. Up to 35pF of load capacitance

(at the output pin) can be driven without stability or slew

issues. The output is AC coupled with a 220µF or larger AC

coupling capacitor.

Typical Applications Diagram

SYNC STRIP,

VIDEO_IN

220µF

VIDEO_OUT

75Ω

Video Cable

REF, AND TIMING

VIDEO_IN

VIDEO_OUT

VCC_VIDEO

0.1µF

75Ω

+5.0V

NC (Reserved)

GND_VIDEO

NC (Reserved)

0.1µF

1µF

FMS6413

NC (Reserved)

Figure 1.

REV. 1.0.2 6/27/02

FMS6413

Absolute Maximum Ratings ^{(beyond which the device may be damaged)}

Parameter

Min

GND-0.3

-65

Max

Units

VCC_VIDEO (Positive DC Supply Voltage)

GND_VIDEO (Negative DC Supply Voltage)

Analog and Digital I/O

+6.5

VCC+0.3

Output Current (Continuous)

Junction Temperature

°C

150

Storage Temperature Range

Lead Temperature (Soldering, 10s)

+150

260

°C

Thermal Resistance (Θ_JA

)

115

°C/W

Note: Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if

Operating Conditions are not exceeded.

Operating Conditions

Parameter

Min

Typ

Max

Units

°C

Temperature Range

VCC_VIDEO Range

GND_VIDEO

4.75

5.0

5.25

ICC (+5 VDC)

REV. 1.0.2 6/27/02

FMS6413

Electrical Characteristics

1Vp-p signal at room temperature

Video Characteristics - Unless otherwise noted, typical output loading on video output is 150Ω.

Condition

Symbol Parameter

VCC_VIDEO=+5.0V ±5%

Min Typ Max Units

Low Frequency Gain (VIDEO_OUT) at 400KHz

6.0

1.0

VIDEO_OUT Output Level (During

Sync)

Sync Present on YIN

tCLAMP Clamp Response Time

Settled to Within 10mV,0.1µF cap

on VIDEO_IN

MHz

f1dB

–1.0dB Bandwidth (Flatness)

(VIDEO_OUT)

No Peaking Cap (Note 1)

4.0

6.7

-37

1.3

4.5

7.1

-42

–3dB Bandwidth (Flatness)

(VIDEO_OUT)

fSB

Stopband Rejection (VIDEO_OUT)

fIN = 27MHz to 100MHz worst

case

Input Signal Dynamic Range

AC Coupled

1.4

VP-P

ISC

Output Short Circuit Current

(All Channels)

VIDEO_OUT to GND

Output Shunt Capacitance

Differential Gain

VIDEO_OUT

0.4

0.8

Differential Phase

THD

Output Distortion (All Channels)

VIDEO_OUT = 1.8VP-P at 3.58/

4.43MHz

PSRR

SNR

tpd

PSRR (All Channels)

0.5VP-P (100kHz) at VCC

NTC-7 weighting 4.2 MHz lowpass

100kHz

-40

-75

Group Delay

∆tpd

Group Delay Deviation from

Flatness

to 3.58MHz (NTSC)

to 4.43MHz (PAL)

Notes:

1. Peaking capacitor increases video output at 4.2MHz nominally by 0.7dB

2. Sustained short circuit protection limited to 10 seconds

REV. 1.0.2 6/27/02

FMS6413

Mechanical Dimensions Inches (millimeters)

Package: S08

8-Pin SOIC

0.189 - 0.199

(4.80 - 5.06)

0.148 - 0.158 0.228 - 0.244

PIN 1 ID

(3.76 - 4.01) (5.79 - 6.20)

0.017 - 0.027

(0.43 - 0.69)

(4 PLACES)

0.050 BSC

(1.27 BSC)

0.059 - 0.069

(1.49 - 1.75)

0° - 8°

0.012 - 0.020

(0.30 - 0.51)

0.015 - 0.035

(0.38 - 0.89)

0.055 - 0.061

(1.40 - 1.55)

0.004 - 0.010

(0.10 - 0.26)

0.006 - 0.010

(0.15 - 0.26)

SEATING PLANE

REV. 1.0.2 6/27/02

FMS6413

Ordering Information

Part Number

FMS6413CS

FMS6413CSX

Temperature Range

0° to 70°

Package

8 Pin SOIC (S08)

Tape and Reel

0° to 70°

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO

ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME

ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN;

NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES

OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR

CORPORATION. As used herein:

1. Life support devices or systems are devices or systems

which, (a) are intended for surgical implant into the body, or

(b) support or sustain life, and (c) whose failure to perform

when properly used in accordance with instructions for use

provided in the labeling, can be reasonably expected to

result in a significant injury of the user.

2. A critical component in any component of a life support

device or system whose failure to perform can be

reasonably expected to cause the failure of the life support

device or system, or to affect its safety or effectiveness.

www.fairchildsemi.com

6/27/02 0.0m 004

Stock#DS30006413

2002 Fairchild Semiconductor Corporation

FMS6413 [FAIRCHILD]

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