FMS6414CS [FAIRCHILD]

Dual Channel Video Drivers with Integrated Filters; 具有集成滤波器的双通道视频驱动器


型号：	FMS6414CS
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Dual Channel Video Drivers with Integrated Filters 具有集成滤波器的双通道视频驱动器驱动器消费电路商用集成电路音频放大器视频放大器光电二极管
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中文：	中文翻译
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www.fairchildsemi.com

FMS 6 4 1 4

Du a l Ch a n n e l Vid e o Drive rs w it h In t e g ra t e d Filt e rs

Video Features

General Description

• Dual Integrated Video Low Pass reconstruction ﬁlters on

outputs

• Integrated output drivers provide low impedance outputs

and deliver 2Vp-p (6dB gain) composite video into 150Ω.

• 7.1MHz 4^thorder video ﬁlters

The FMS6414 Dual Channel Video Filter – Driver Chip

offers comprehensive video ﬁltering for set top box or DVD

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

Pass Filters for video ﬁltering. This device integrates video

drivers so that it can directly drive to the outside world.

• 0.4% differential gain with 0.4° differential phase

• Integrated DC Restore / Clamp Circuitry

The video signals are ﬁltered at 7.1MHz and buffered to

drive 2Vp-p into AC coupled 150Ω loads with up to 35pF of

load capacitance at the output pin. The ﬁlters approximate a

4th-order Butterworth characteristic with an optimization

toward low overshoot and ﬂat group delay. Likewise, they

are 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

• Cable and Satellite Set top boxes

• DVD players

• Televisions

• HDTV

• Personal Video Recorders (PVRs)

• Video On Demand (VOD)

Functional Block Diagram

SYNC STRIP,

REF, AND TIMING

YIN

YOUT

NC (Reserved)

VCC_VIDEO

FMS6414

GND_VIDEO

NC (Reserved)

COUT

CIN

REV. 1.0.1 6/27/02

PRODUCT SPECIFICATION

FMS6414

Pin Description

FMS6414

8-Pin SOIC (S08)

YIN

Y_OUT

VCC_VIDEO

GND_VIDEO

CIN

COUT

Video Section

Pin#

Type

Input

Description

YIN

Luma (Luminance) / Composite Input

Chroma (Chrominance) Input

CIN

COUT

YOUT

Output Filtered Chroma (Chrominance) Output

Output Filtered Luma (Luminance) Output

Power/Ground Pins

Pin#

Type

Description

VCC_VIDEO

Power +5 VDC for Video

GND_VIDEO Power Ground for Video

Reserved (Need to Float)

REV. 1.0.1 6/27/02

FMS6414

PRODUCT SPECIFICATION

Functional Description

sources 20µA to restore the 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 FMS6414 is a monolithic continuous time video ﬁlter

designed for reconstructing the luminance, chrominance,

or composite video signals from D/A source. The chip is

intended for use in applications with AC coupled input and

AC coupled outputs. (See Figure 1) The reconstruction ﬁlters

approximate a 4th-order Butterworth characteristic with an

optimization toward low over-shoot and ﬂat group delay.

The video outputs are each 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 capacitors do not behave according

to the conventional RC time constant. Clamping for all

channels settles to less than 10mv within 5ms of a change in

video input source. In most applications the input coupling

capacitors are 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

Video I/O

The video inputs are 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,

REF, AND TIMING

220µF

YIN

YOUT

75Ω

Video Cable

YIN

YOUT

0.1µF

75Ω

+5.0V

NC (Reserved)

VCC_VIDEO

0.1µF

1µF

FMS6414

GND_VIDEO

NC (Reserved)

220µF

CIN

COUT

75Ω

Video Cable

COUT

CIN

0.1µF

75Ω

Figure 1.

REV. 1.0.1 6/27/02

PRODUCT SPECIFICATION

FMS6414

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. 1.0.1 6/27/02

FMS6414

PRODUCT SPECIFICATION

Electrical Characteristics

1Vp-p signal at room temperature

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

Symbol

Parameter

Condition

Min Typ Max Units

VCC_VIDEO=+5.0V ±10%

AVYC

Low Frequency Gain

(YOUT, COUT)

at 400KHz

5.75

6.0

6.25

YSYNC YOUT Output Level (During Sync) Sync Present on YIN

CSYNC COUT Output Level (During Sync) Sync Present on YIN

0.75

1.6

1.0

2.0

1.25

2.4

tCLAMP Clamp Response Time

(Y Channel)

Settled to Within 10mV, 0.1µF cap

on YIN and CIN

f1dB

–1.0dB Bandwidth (Flatness)

(YOUT, COUT)

No Peaking Cap (Note 1)

4.0

6.7

4.5

7.1

-42

1.4

MHz

–3dB Bandwidth (Flatness)

(YOUT, COUT)

fSB

Stopband Rejection

(YOUT, COUT)

fIN = 27MHz to 100MHz worst case -37

Input Signal Dynamic Range

(All Channels)

AC Coupled

1.3

VP-P

ISC

Output Short Circuit Current

(All Channels)

YOUT, COUT to GND (Note 2)

Output Shunt Capacitance

Differential Gain

All Channels

YOUT, COUT

0.4

0.8

Differential Phase

THD

Output Distortion (All Channels)

YOUT/ COUT = 1.8VP-P at 3.58/

4.43MHz

XTALK

Crosstalk

From CIN of 0.5VP-P at 3.58MHz to

YOUT

-55

-58

From YIN Input of 0.4VP-P at

3.58MHz, to COUT

PSRR

SNR

tpd

PSRR (All Channels)

Y, C Channel

0.5VP-P (100kHz) at VCC

NTC-7 weighting 4.2 MHz lowpass

100kHz

-40

-75

Group Delay (Y, C)

∆tpd

Group Delay Deviation from

Flatness (Y, C)

to 3.58MHz (NTSC)

to 4.43MHz (PAL)

At 1MHz

tSKEW

Skew between YOUT and COUT

Notes:

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

2. Sustained short circuit protection limited to 10 seconds

REV. 1.0.1 6/27/02

PRODUCT SPECIFICATION

FMS6414

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. 1.0.1 6/27/02

PRODUCT SPECIFICATION

FMS6414

Ordering Information

Part Number

FMS6414CS

FMS6414CSX

Temperature

0° to 70°

Range 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#DS30006414

2002 Fairchild Semiconductor Corporation

FMS6414CS [FAIRCHILD]

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