ML6426-1 FAIRCHILD [Fairchild Semiconductor], ML6426-1 Datasheet

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ML6426-1

Manufacturer Part Number
ML6426-1
Description
High Bandwidth Triple Video Filters with Buffered Outputs for RGB or YUV
Manufacturer
FAIRCHILD [Fairchild Semiconductor]
Datasheet
Features
• 5V ±10% operation
• RGB/YUV filters for ATSC Digital Television VESA
• 2:1 Mux Inputs for multiple RGB/YUV inputs
• Triple Reconstruction Filter options for 6.7, 12, 24, 30,
• Multiple ML6426 outputs can be paralleled to drive RGB/
• 6dB drivers and sync tip clamps for DC restore
• DC restore with minimal tilt
• 0.4% differential gain on all channels
• 2kV ESD protection
Block Diagram
ML6426
High Bandwidth Triple Video Filters with Buffered
Outputs for RGB or YUV
Standard
and 36MHz to handle various line rates
YUV outputs at different frequencies for various line rates
by means of Disable/Enable pin.
0.4º differential phase on all channels
0.8% total harmonic distortion on all channels
Filter A
Filter B
Filter C
16
2
5
6
7
8
9
1
R IN A/Y IN A
R IN B/Y IN B
G IN A/U IN A
G IN /U IN B
B IN A/V IN A
B IN B/V IN B
A/B MUX
SYNCIN
ML6426-1
6.7MHz
6.7MHz
6.7MHz
MUX
MUX
MUX
TRANSCONDUCTANCE
TRANSCONDUCTANCE
TRANSCONDUCTANCE
ML6426-2
12MHz
12MHz
12MHz
ERROR AMP
ERROR AMP
ERROR AMP
DISABLE
15
ML6426-3
24MHz
24MHz
24MHz
+
+
+
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, and 36MHz. 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 out-
puts 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 feed-
back 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
2 (6dB) at 1V
V CCO
12
0.5V
0.5V
0.5V
ML6426-4
V CC
30MHz
30MHz
30MHz
P-P
4
P-P
4th-ORDER
4th-ORDER
4th-ORDER
FILTER C
FILTER A
FILTER B
into a 150 Ω load. All channels have a gain of
input levels.
GNDO
ML6426-5
14
www.fairchildsemi.com
36MHz
36MHz
36MHz
×2
×2
×2
GND
3
G OUT /U OUT
R OUT /Y OUT
B OUT /V OUT
REV. 3A August 2004
ML6426-15
15MHz
15MHz
15MHz
13
11
10
th
-

Related parts for ML6426-1

ML6426-1 Summary of contents

Page 1

... All channels have a gain of input levels. P-P R OUT /Y OUT 4th-ORDER ×2 13 FILTER A G OUT /U OUT 4th-ORDER ×2 11 FILTER B B OUT /V OUT 4th-ORDER ×2 10 FILTER C GNDO GND 14 3 ML6426-5 ML6426-15 36MHz 15MHz 36MHz 15MHz 36MHz 15MHz REV. 3A August 2004 th - ...

Page 2

... Analog ground 15 DISABLE Disable/Enable pin . Turns the chip off when logic high. Internally pulled low. 16 SYNC IN Input for an external H-sync logic signal for filter channels . CMOS level input. Active High. 2 ML6426 16-Pin Narrow SOIC (S16N) A/B MUX 16 SYNC A ...

Page 3

... All Outputs All Outputs MHz OUT P-P 0.5V (100kHz P-P CC Note 2 DISABLE, SYNC IN DISABLE, SYNC IN A/B Mux Pin Valid High or Low ML6426 Max. Unit 7 V 150 °C >2000 0 150 °C 260 °C 100 °C/W Max. Unit 70 ° ...

Page 4

... ML6426 Electrical Characteristics Unless otherwise specified 5V±10 Symbol Parameter 6.7MHz Filter: ML6426-1 f –1dB Bandwidth Flatness (R, G, B,) 1dB f –3dB Bandwidth Flatness ( Attenuation 0.8fc C f StopBand Rejection SB (All Channels ≥ NOISE Output Noise (R, G, B,) X Crosstalk ...

Page 5

... Output Noise (R, G, B,) X Crosstalk TALK X A/B MUX Crosstalk TALK T Group Delay (R, G, B,) PD ∆T Group Delay Deviation from Flatness PD (R, G, B,) 15MHz Filter: ML6426-15 f –1dB Bandwidth Flatness (R, G, B,) 1dB f –3dB Bandwidth Flatness ( Attenuation 0.8fc C StopBand Rejection (All Channels ≥ ...

Page 6

... AC P-P Each channel is essentially tilt-free. Each input is clamped . P feedback amp which responds to the output during sync. The ML6426 is robust and stable under all stated load and input conditions. Bypassing both V ground ensures this performance ...

Page 7

... ML6426 Picture Transmission Rate 60I, 30P, 24P 60P, 30P, 24P 60P, 60I, 30P, 24P 60P, 60I, 30P, 24P 162MHz 81MHz N/A 60MHz 30MHz ML6426-5 ML6426-4 13.5MHz 6.75MHz ML6426-1 27MHz 13.5MHz ML6426-2 ML6426-4 24.5MHz 12MHz ML6426-2 12.27MHz 6MHz ML6426-1 7 ...

Page 8

... Figures 4, 5, and 6 show system diagrams when the ML6426 provides a good solution. Figure 7 provides a more detailed description for advanced TV applications using various reso- lutions for legacy video, SDTV, and HDTV. Table 3. Choosing the Correct Reconstruction Filter and Video Amplifier for TV Applications, ML6426 options 640 480 VGA ...

Page 9

... DATA SHEET GENERAL SELECT PURPOSE I/O LOGIC 5V 0.1µ 0.1µ 0.1µ SYNC IN REV. 3A August 2004 DISABLE/ENABLE LINES ML6426 6.7MHz ML6426 12MHz ...

Page 10

... HDTV DECODER D/A AND DISPLAY PROCESSOR VIDEO RGB DECODER ML6426 D/A AND DISPLAY PROCESSOR VIDEO ENCODER YCrCb DIGITAL FROM DVD-ROM OR MEMORY MRI, XRAY, ULTRASOUND, CT SCAN DSP DIGITAL YUV D/A ANALOG Y MEDICAL U ML6426 IMAGING V DATA SHEET Y DIGITAL TV U ML6426 V Y RGB U MONITOR V REV. 3A August 2004 ...

Page 11

... 75Ω B R10 75Ω HYSYNC IN SW2 REV. 3A August 2004 FB1 FB2 C10 0.1µF 1µF 1µF 0.1µF U1 ML6426 0.1µ OUT 4TH ORDER 0.1µF 5 FILTER 0.1µ OUT 4TH ORDER 0.1µ ...

Page 12

... Figure 9. Passband Flatness all Outputs –10 –20 –30 –40 –50 –60 –70 100M Figure 11. Passband Flatness all Outputs 100M 1G DATA SHEET 0 10k 100k 1M 10M 100M FREQUENCY (Hz) (Normalized) 12 MHz, ML6426CS 10M 100M FREQUENCY (MHz) (Normalized) 30 MHz, ML6426CS-4 REV. 3A August 2004 1G ...

Page 13

... Figure 16. Frequency Response All Outputs –2 –4 –6 – Figure 18. Group Delay Deviation All Band, ML6426 0.7 1.4 2.1 2.8 3.5 4.2 4.9 5.6 6.3 7.0 FREQUENCY (MHz) All Outputs ML6426CS 100 FREQUENCY (MHz) ML6426CS 100 FREQUENCY (MHz) All Outputs ML6426CS-2 13 ...

Page 14

... Figure 24. Group Delay Deviation All Band, DATA SHEET 0 2.5 5 7.5 10 12.5 15 17.5 20 22.5 FREQUENCY (MHz) All Outputs ML6426CS FREQUENCY (MHz) ML6426CS FREQUENCY (MHz) All Outputs ML6426CS-4 REV. 3A August 2004 25 100 100 ...

Page 15

... FREQUENCY (MHz) Figure 27. Group Delay Deviation All band, All Outputs ML6426CS-5 REV. 3A August 2004 –2 –4 –6 – 100 Figure 26. Group Delay Deviation of Passband 100 FREQUENCY (MHz) All Outputs ML6426CS-5 ML6426 50 15 ...

Page 16

... ML6426 Mechanical Dimensions 16 PIN 0.017 - 0.027 (0.43 - 0.69) (4 PLACE S ) 0.012 - 0.020 0.055 - 0.061 (0.30 - 0.51) (1.40 - 1.55) 16 Package: S16N 16-Pin Narrow SOIC 0.386 - 0.396 (9.80 - 10.06) 0.148 - 0.158 0.228 - 0.244 (3.76 - 4.01) (5.79 - 6.20) 0.050 BS C (1. 0.059 - 0.069 (1.49 - 1.75) 0.004 - 0.010 S E ATING PLANE (0.10 - 0.26) DATA SHEET 0° - 8° 0.015 - 0.035 0.006 - 0.010 (0 ...

Page 17

... ML6426CS2 ML6426 ML6426CS2X ML6426 ML6426CS3 ML6426 ML6426CS3X ML6426 ML6426CS4 ML6426 ML6426CS4X ML6426 ML6426CS4X_NL ML6426 ML6426CS5 ML6426 ML6426CS5X ML6426 ML6426CS15 ML6426 ML6426CS15X Temperature range for all parts: 0°C to +70°C 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 ...

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