ML6426CS-1 Datasheet

IC型號：
ML6426CS-1
PDF描述：
High Bandwidth Triple Video Filters with Buffered Outputs fo...
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PDF頁數(shù)：
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上傳產品規(guī)格書

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September 1999

PRELIMINARY

ML6426

High Bandwidth Triple Video Filters with Buffered

Outputs for RGB or YUV

GENERAL DESCRIPTION

The ML6426 are a family of triple video filters with

buffered outputs. There are several versions of the

ML6426, each with different passband cut-off frequencies

of 6.7MHz, 12MHz, 24MHz, 30MHz, 36MHz, and

48MHz. Each channel contains a 4

-order Butterworth

lowpass reconstruction video filter. The filter is optimized

for minimum overshoot and flat group delay and

guaranteed differential gain and phase at the outputs of

the integrated cable drivers.

All input signals from DACs are AC coupled into the

ML6426. All channels have DC restore circuitry to clamp

the DC input levels during video H-sync, using an output

feedback clamp. An external H-sync signal is required for

this purpose.

All outputs must be AC coupled into their loads. Each

output can drive 2V

P-P

into a 150W load. All channels

have a gain of 2 (6dB) at 1V

P-P

input levels.

FEATURES

5V 鹵10% operation

RGB/YUV filters for ATSC Digital Television VESA

Standard

2:1 Mux Inputs for multiple RGB/YUV inputs

Triple Reconstruction Filter options for 6.7, 12, 24, 30,

36, and 48MHz to handle various line rates

Multiple ML6426 outputs can be paralleled to drive

RGB/YUV outputs at different frequencies for various

line rates by means of Disable/Enable pin.

6dB drivers and sync tip clamps for DC restore

DC restore with minimal tilt

0.4% differential gain on all channels

0.4潞 differential phase on all channels

0.8% total harmonic distortion on all channels

2kV ESD protection

BLOCK DIAGRAM

VCCO

RINA/YINA

RINB/YINB

GINA/UINA

GIN/UINB

BINA/VINA

BINB/VINB

MUX

TRANSCONDUCTANCE

ERROR AMP

A/B MUX

SYNCIN

DISABLE

GNDO

GND

鈥?/div>

VCC

MUX

TRANSCONDUCTANCE

ERROR AMP

MUX

TRANSCONDUCTANCE

ERROR AMP

鈥?/div>

4th-ORDER

FILTER A

0.5V

4th-ORDER

FILTER B

0.5V

4th-ORDER

FILTER C

0.5V

脳2

ROUT/YOUT

脳2

GOUT/UOUT

脳2

BOUT/VOUT

Filter A

Filter B

Filter C

ML6426-1

6.7MHz

ML6426-2

12MHz

ML6426-3

24MHz

ML6426-4

30MHz

ML6426-5

36MHz

ML6426-6

48MHz

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