FMS6151L6X [FAIRCHILD]

Ultra Portable Video Filter Driver; 超便携式视频滤波驱动器


型号：	FMS6151L6X
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	Ultra Portable Video Filter Driver 超便携式视频滤波驱动器驱动器消费电路商用集成电路光电二极管便携式
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中文：	中文翻译
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March 2008

FMS6151

Ultra Portable Video Filter Driver

Features

■ 5th order 8MHz (SD) ﬁlter

Description

The FMS6151 low cost, integrated, video ﬁlter is intended

to replace passive LC ﬁlters and drivers in low voltage

portable video applications. The 5th order ﬁlter provides

better image quality compared to typical 2nd and 3rd

order passive solutions.

■ Power down to 25nA

■ DC-coupled input

■ AC- or DC-coupled output

■ DC coupled output eliminate need for AC-coupling cap

■ SAG correction reduces size of AC-coupling cap

■ Fixed gain of 6dB

The FMS6151 is intended to be directly driven by a DC-

coupled DAC output. The output can drive an AC or DC-

coupled doubly terminated coax(150Ω) load. DC-coupling

the output removes the need for an expensive output

coupling capacitor. If anAC-coupled output is needed, the

SAG correction circuit can be used to reduce the AC out-

put coupling capacitor value. Input DC levels are offset by

approximately 100mV. This internal level shift is incorpo-

rated to prevent sync pulse clipping.

■ Small, lead-free, Micropak^®packaging

Applications

■ Digital Still Cameras

■ Camera Phones

■ Personal Digital Assistants

■ Set Top Boxes

■ Digital Video Recorders

Offering SAG correction, ﬁxed gain of 6dB, and a 5th order

low pass ﬁlter in a tiny space saving package (Micropak)

makes the FMS6151 well suited for space sensitive appli-

cations such as cellular phones and digital cameras.

Block Diagram

= 2.5V to 5.25V

OUT

8MHz,

5th order

SAG

Figure 1. Block Diagram

Ordering Information

Part Number

Package

Operating Temperature Range

Packaging Method

FMS6151L6X

uPAK-6

-40°C to +105°C

Reel

All packages are lead free per JEDEC: J-STD-020B standard.

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

Pin Conﬁguration

V_IN

GND

SAG

FMS6151

V_cc

V_OUT

Figure 2. Pin Assignments

Pin Assignments

Pin#

Pin Name

V_IN

Type

Input

Output

Input

Description

Input video

GND

SAG

Ground

SAG

V_OUT

V_CC

Filtered video output

Positive power supply

Enable 0 = Disabled 1 = Enabled

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable

above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition,

extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute

maximum ratings are stress ratings only.

Parameter

Min.

-0.3

Max.

Unit

DC Supply Voltage

Analog and Digital I/O

+V_CC+0.3

45mA

Maximum Output Current, Do Not Exceed

Reliability Information

Parameter

Junction Temperature

Min.

Typ.

Max.

Unit

150

°C

Storage Temperature Range

-65

Thermal Resistance (θ_JA), JDEC standard, multi-layer

test boards, still air.

Recommended Operating Conditions

The Recommended Operating Conditions table deﬁnes the conditions for actual device operation. Recommended

operating conditions are speciﬁed to ensure optimal performance to the datasheet speciﬁcations. Fairchild does not

recommend exceeding them or designing to absolute maximum ratings.

Parameter

Min.

-40

Typ.

Max.

+105

5.25

Unit

°C

Operating Temperature Range

Supply Voltage Range

2.5

3.3

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

DC Electrical Characteristics

T = 25°C, V = 2.7V, R = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to V pin;

OUT

unless otherwise noted.

Symbol Parameter

Conditions

Min.

Typ.

3.8

1.2

200

Max.

Units

I_CC

Supply Current⁽¹⁾

V_CC= 2.7V, no load

6.4

V_pp

V_IN

Video Input Voltage Range

Output Level Shift⁽¹⁾

Vols over power supply

Shut Down Current

Disabled Logic Low⁽¹⁾

Enabled Logic High⁽¹⁾

Enable Time

Referenced to GND

V_IN= 0V

Vols

PSRR

I_SH

350

V_CC= 2.7V to 3.3V

V_il

0.8

V_ih

V_CC*0.6

V_CC

t_ON

1.5

μs

t_OFF

Disable Time

AC Electrical Characteristics

T = 25°C, V = 2.7V, R = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to V pin;

OUT

unless otherwise noted.

Symbol Parameter

Conditions

Min.

6.0

Typ.

6.2

6.7

Max.

Units

A_V

f_1dB

f_c

Gain⁽¹⁾

6.4

-1dB Bandwidth⁽¹⁾

5.0

MHz

-3dB Bandwidth

f_SB

Attenuation⁽¹⁾(stopband reject)

27MHz

SNR

Note:

Differential Gain

0.5

Differential Phase

Signal-to-Noise Ratio

NTC-7 weighting, 100kHz to 4.2MHz

1. 100% tested at 25°C

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

Typical Performance Characteristics

T = 25°C, V = 2.7V, R = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to V

pin;

OUT

unless otherwise noted.

2.0

1.8

1.6

1.4

1.2

1.0

0.8

0.6

-5

-10

-15

-20

-25

-30

-35

-40

-45

Mkr Frequency

Gain

Ref 400kHz

6dB

6.7MHz

8.0MHz

27MHz

-1dB BW

-3dB BW

-42dB

f_SBSD= Gain_(ref)– Gain₍₃₎= 48dB

-40 -30 -20 -10 0 10 20 30 40 50 60 70 80

Frequency (MHz)

Temperature (°C)

Figure 3. Frequency Response

Figure 4. Gain Error vs. Temperature

3.0

2.5

NTSC

2.0

1.5

1.0

0.5

without SAG

Enable Pulse

2.0

1.0

-0.5

-1.0

-1.5

-2.0

-2.5

Output

Min = -0.58

Max = 0.00

Max = 0.58

-1.0

-1

1st

2nd

3rd

4th

5th

6th

Time (µs)

Figure 5. REnable/Disable Response

Figure 6. Differential Gain

7.0

6.0

5.0

4.0

3.0

2.0

1.0

2.5

2.0

1.5

1.0

0.5

NTSC

without SAG

-0.5

-1.0

-1.5

-2.0

-2.5

Min = -0.58

Max = 0.12

Max = 0.70

2.5

3.0

3.5

4.0

4.5

5.0

5.5

1st

2nd

3rd

4th

5th

6th

(V)

Figure 7. I

vs. Supply Voltage

Figure 8. Differential Phase

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

Typical Performance Characteristics

T = 25°C, V = 2.7V, R = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to V

pin;

OUT

unless otherwise noted.

4.0

3.9

3.8

3.7

3.6

3.5

-40

-20

-40

-20

Temperature (°C)

Figure 9. Supply Current vs. Temperature

Figure 10. Shutdown Current vs. Temperature

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

SAG Correction

Application Information

Sag correction provides excellent performance with a

small output coupling capacitor. It eliminates the 220ꢀF -

1000ꢀF output coupling capacitors traditionally used. The

traditional output circuit (220ꢀF into 150Ω load) creates a

single pole (-3dB) at 5Hz. Reducing this capacitor causes

excessive phase shift, resulting in video ﬁeld tilt which can

prevent proper recovery of the synchronization signals.

Input Voltage

The FMS6151 is intended to be directly driven by a DC

coupled DAC output. The input common mode range of

the FMS6151 is 1.2V_pp, ground referenced.

Enable/Shutdown

The FMS6151 has a shutdown feature that disables the

output and reduces the quiescent current to ~25nA. This

feature is especially useful in portable applications, such

as cellular phones, hand held gaming devices, and video

cameras requiring video ﬁltering and drive capability.

The FMS6151 sag correction circuit provides a small

amount of peaking, which provides compensation of the

phase response, signiﬁcantly reducing video ﬁeld tilt. The

SAG correction circuit allows you to decrease the large,

220ꢀF, output coupling capacitor. A 22ꢀF is used for sag

correction and a 47ꢀF is used for the output coupling

capacitor, extremely smaller and cheaper than the traditional

circuit requirements.

Internal Level Shift

The FMS6151 has an internal level shift circuit to avoid

sync tip clipping. The output signal is shifted 200mV

toward the V_CCrail to help prevent clipping. This offset

is extremely useful when DC coupled out or using SAG

correction.

Output Conﬁguration

The FMS6151 output is a low impedance voltage driver. It

is capable of driving an AC or DC coupled single load.

For more application information, please refer to our

FMS6151 Application Note, AN-8005.

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

Physical Dimensions

0.05 C

1.45

(1)

0.05 C

(0.49)

1.00

(0.75)

(0.52)

TOP VIEW

0.55MAX

(0.30)

PIN 1

0.05 C

0.05

0.00

RECOMMENED

LAND PATTERN

0.05 C

0.45

0.35

0.10

0.00

0.25

0.15

1.0

DETAIL A

0.10

C B A

0.40

0.30

0.05

0.35

0.25

0.40

0.30

DETAIL A

PIN 1 TERMINAL

0.075 X 45

CHAMFER

0.5

BOTTOM VIEW

(0.05)

(0.13)

Notes:

1. CONFORMS TO JEDEC STANDARD M0-252 VARIATION UAAD

2. DIMENSIONS ARE IN MILLIMETERS

3. DRAWING CONFORMS TO ASME Y14.5M-1994

MAC06AREVC

Figure 11. 6-Lead MicroPAK Package

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package speciﬁcations do not expand the terms of Fairchild’s worldwide terms and conditions,

speciﬁcally the warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

FMS6151 Rev. 1.0.3

www.fairchildsemi.com

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