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NCS2554 Four-Channel Video Driver with SD Reconstruction Filters
The NCS2554 is a 4-channel high speed video driver with 6th order Butterworth Reconstruction filters on each channel. A first set of 3-channel has Standard Definition (SD) filters, one per channel. A fourth channel offers an extra filter driver for driving Cvbs-type video signal. The NCS2554 is in fact a combination of a triple SD video driver for YPbPr plus a single Cvbs video driver. It is designed to be compatible with Digital-to-Analog Converters (DAC) embedded in most video processors. To further reduce power consumption, 2 enable pins are provided one for the triple driver and another one for the single driver. All channels can accept DC- or AC-coupled signals. In case of AC-coupled inputs, the internal clamps are enabled. The outputs can drive both AC and DC coupled 150 W loads.
Features http://onsemi.com MARKING DIAGRAM
14 1 TSSOP-14 TBD SUFFIX CASE 948G 1 14 NCS 2554 ALYWG G
* 4-Channel with per Channel a Selectable Sixth-Order Butterworth * * * * * * * * * * *
8 MHz Filter Transparent Clamp Internal Fixed Gain: 6 dB $0.2 Integrated Level Shifter AC- or DC-Coupled Inputs and Outputs Low Quiescent Current Shutdown Current 42 mA Typical (Disabled) Each channel Capable to Drive 2 by 150 W Loads Wide Operating Supply Voltage Range: +4.7 V to +5.3 V Robust ESD protection 8 kV TSSOP-14 Package This is a Pb-Free Device
NCS2554 = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W = Work Week G = Pb-Free Package
PINOUT
CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 1 2 3 4 5 6 7 14 13 12 11 10 9 8 CVBS_OUT GND GND SD_EN SD_OUT1 SD_OUT2 SD_OUT3
(Top View)
ORDERING INFORMATION
Device NCS2554DTBR2G Package TSSOP-14 (Pb-Free) Shipping 2500 / Tape & Reel
Typical Application
* Set Top Box Decoder * DVD Player / Recorder * SDTV
For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D.
(c) Semiconductor Components Industries, LLC, 2010
January, 2010 - Rev. 1
1
Publication Order Number: NCS2554/D
NCS2554
CVBS_IN
1
Transparent Clamp
6dB
14
CVBS_OUT
6th Order, 8 MHz Filter
CVBS_EN
2 250 kW GND
13
GND
VCC
3 250 kW
12
GND
NC
4
11
SD_EN
SD_IN1
5
Transparent Clamp
6dB
10
SD_OUT1
6th Order, 8 MHz Filter
SD_IN2
6
Transparent Clamp
6dB 6th Order, 8 MHz Filter
9
SD_OUT2
SD_IN3
7
Transparent Clamp
6dB
8
SD_OUT3
6th Order, 8 MHz Filter
Figure 1. NCS2554 Block Diagram
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NCS2554
PIN DESCRIPTION
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Name CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 SD_OUT3 SD_OUT2 SD_OUT1 SD_EN GND GND CVBS_OUT Type Input Input Power Input Input Input Input Output Output Output Input Ground Ground Output Description Video Input for Video Signal featuring a frequency bandwidth compatible with NTSC / PAL / SECAM Video (8 MHz) - Cvbs Channel Cvbs Channel Enable /Disable Function: Low = Enable, High = Disable. When left open the default state is Enable. Power Supply / 4.7 V to 5.3 V Not Connected Selectable SD Video Input 1 - SD Channel 1 Selectable SD Video Input 2 - SD Channel 2 Selectable SD Video Input 3 - SD Channel 3 SD Video Output 3 - SD Channel 3 SD Video Output 2 - SD Channel 2 SD Video Output 1 - SD Channel 1 SD Channel Enable/Disable Function: Low = Enable, High = Disable. When left open the default state is Enable. Ground Ground Cvbs Video Output - Cvbs Channel
ATTRIBUTES
Characteristic Moisture Sensitivity (Note 1) Flammability Rating Oxygen Index: 28 to 34 Value Level 1 UL 94 V-0 @ 0.125 in.
1. For additional information, see Application Note AND8003/D
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NCS2554
MAXIMUM RATINGS
Rating Power Supply Voltages Input Voltage Range Input Differential Voltage Range Output Current (Indefinitely) per Channel Maximum Junction Temperature (Note 2) Operating Ambient Temperature Storage Temperature Range Thermal Resistance, Junction-to-Air Symbol VCC VI VID IO TJ TA Tstg RqJA Value -0.3 v VCC v 5.5 -0.3 v VI v VCC -0.3 v VI v VCC 40 150 -40 to +85 -60 to +150 125 Unit Vdc Vdc Vdc mA C C C C/W
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability. 2. Power dissipation must be considered to ensure maximum junction temperature (TJ) is not exceeded.
Maximum Power Dissipation
1800 POWER DISSIPATION (mV) 1600 1400 1200 1000 800 600 400 200 0 -40 -30-20-10 0 10 20 30 40 50 60 70 80 90100 TEMPERATURE (C)
The maximum power that can be safely dissipated is limited by the associated rise in junction temperature. For the plastic packages, the maximum safe junction temperature is 150C. If the maximum is exceeded momentarily, proper circuit operation will be restored as soon as the die temperature is reduced. Leaving the device in the "overheated" condition for an extended period can result in device burnout. To ensure proper operation, it is important to observe the derating curves.
Figure 2. Power Dissipation vs Temperature
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NCS2554
DC ELECTRICAL CHARACTERISTICS (VCC = +5.0 V, Rsource = 37.5 W, TA = 25C, inputs AC-coupled with 0.1 mF, all outputs
AC-coupled with 220 mF into 150 W referenced to 400 kHz; unless otherwise specified) Symbol POWER SUPPLY VCC ICC ISD Vi VIL VIH Rpd VOH VOL IO Supply Voltage Range Supply Current Shutdown Current (CVBS_EN and SD_EN High) SD Channels Selected + Cvbs 4.7 5.0 40 42 5.3 55 60 V mA mA Characteristics Conditions Min Typ Max Unit
DC PERFORMANCE Input Common Mode Voltage Range Input Low Level for the Control Pins (2, 11) Input High Level for the Control Pins (2, 11) Pulldown Resistors on Pins CVBS_EN and SD_EN GND 0 2.4 250 1.4 0.8 VCC VPP V V kW
OUTPUT CHARACTERISTICS Output Voltage High Level Output Voltage Low Level Output Current 2.8 200 40 V mV mA
AC ELECTRICAL CHARACTERISTICS FOR STANDARD DEFINITION CHANNELS (pin numbers (1, 14) (5, 10), (6, 9), (7, 8)) (VCC = +5.0 V, Vin = 1 VPP, Rsource = 37.5 W, TA = 25C, inputs AC-coupled with 0.1 mF, all outputs AC-coupled with 220 mF into 150 W referenced to 400 kHz; unless otherwise specified)
Symbol AVSD BWSD Voltage Gain Low Pass Filter Bandwidth (Note 4) Characteristics Conditions Vin = 1 V - All SD Channels -1 dB -3 dB @ 27 MHz Min 5.8 5.5 6.5 43 Typ 6.0 7.2 8.0 50 0.7 0.7 Vout = 1.4 VPP @ 3.58 MHz @ 1 MHz and Vin = 1.4 VPP NTC-7 Test Signal, 100 kHz to 4.2 MHz (Note 3) @ 4.5 MHz 100 kHz to 8 MHz 0.35 -57 72 70 20 Max 6.2 Unit dB MHz
ARSD dGSD dFSD THD XSD SNRSD DtSD DGDSD
Stop-band Attenuation (Notes 4 and 5) Differential Gain Error Differential Phase Error Total Harmonic Distortion Channel-to-Channel Crosstalk Signal-to-Noise Ratio Propagation Delay Group Delay Variation
dB % % dB dB ns ns
3. SNR = 20 x log (714 mV / RMS noise) 4. 100% of Tested ICs fit the bandwidth and attenuation tolerance at 25C. 5. Guaranteed by characterization.
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NCS2554
TYPICAL CHARACTERISTICS
VCC = +5.0 V, Vin = 1 VPP, Rsource = 37.5 W, TA = 25C, Inputs AC-coupled with 0.1 mF, All Outputs AC-coupled with 220 mF into 150 W Referenced to 400 kHz; unless otherwise specified 30 20 NORMALIZED GAIN (dB) NORMALIZED GAIN (dB) 10 0 -10 -20 -30 -40 -50 -60 -70 100k 1M 10M 100M -1 dB @ 6.7 MHz -3 dB @ 8.1 MHz -53 dB @ 27 MHz 0.4 0.35 0.3 0.25 0.2 0.15 0.1 0.5 0 -0.5 -0.1 100k 1M FREQUENCY (Hz) 10M 0.226 dB @ 3.6 MHz
FREQUENCY (Hz)
Figure 3. SD Normalized Frequency Response
Figure 4. SD Passband Flatness
-40 -45 -50 -55 GAIN (dB) -60 -65 -70 -75 -80 -85 -90 20k 100k 1M FREQUENCY (Hz) 10M -79 dB @ 50 kHz GROUP DELAY (ns) -51.8 dB @ 6.85 MHz
30 20 10 0 -10 -20 -30 -40 -50 -60 -70 400k 1M FREQUENCY (Hz) 10M 20M 20.7 ns @ 7 MHz
Figure 5. SD Channel-to-Channel Crosstalk
Figure 6. SD Normalized Group Delay
Output Input Output
70 ns 200 mV Input 0.7 VPP
Figure 7. SD Propagation Delay
Figure 8. SD Small Signal Response
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NCS2554
TYPICAL CHARACTERISTICS
VCC = +5.0 V, Vin = 1 VPP, Rsource = 37.5 W, TA = 25C, Inputs AC-coupled with 0.1 mF, All Outputs AC-coupled with 220 mF into 150 W Referenced to 400 kHz; unless otherwise specified
0 Input Output -10 -20 -30 PSRR (dB) 1 VPP -40 -50 -60 -70 -80 -90 -100 20 100k 1M FREQUENCY (Hz) 10M 50M
Figure 9. SD Large Signal Response
Figure 10. SD VCC PSRR vs. Frequency
20 10 NORMALIZED GAIN (dB) 0 -10 -20 -30 -40 -50 -60 -70 -80 400k 1M 10M
60 50 40 30 20 10 0 -10 -20 -30 -40 50M NORMALIZED GROUP DELAY (ns)
(Hz)
Figure 11. SD Frequency Response and Group Delay
0.9 0.8 DIFFERENTIAL GAIN (%) 0.7 0.6 0.5 0..4 0.3 0.2 0.1 0 0 1 2 3 4 5 6 HARMONIC 0.31 0.68 0.75 0.76 0.77 DIFFERENTIAL PHASE () 0.9 0.8 0.7 0.6 0.5 0..4 0.3 0.2 0.1 0 1 0.07 2 3 4 5 6 0.14 0.36 0.65 0.75
HARMONIC
Figure 12. SD Differential Gain
Figure 13. SD Differential Phase
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NCS2554
APPLICATIONS INFORMATION employed shifting up the output voltage by adding an offset The NCS2554 quad video driver has been optimized for of 200 mV. This prevents sync pulse clipping and allows Standard video applications covering the requirements of the standards Composite video (Cvbs), S-Video, DC-coupled output to the 150 W video load. In addition, the Component Video (480i/525i, 576i/625i) and related NCS2554 integrates a 6th order Butterworth filter for each. (RGB). The three SD channels have 8 MHz filters for This allows rejection of the aliases or unwanted covering standard definition-like video applications. over-sampling effects produced by the video DAC. In the regular mode of operation each channel provides an Similarly for the case of DVD recorders which use an ADC, internal voltage-to-voltage gain of 2 from input to output. this anti-aliasing filter (reconstruction filter) will avoid This effectively reduces the number of external components picture quality issue and will aide filtration of parasitic required as compared to discrete approached implemented signals caused by EMI interference. with stand alone op amps. An internal level shifter is
+5V 10 mF
0.1 mF CVBS CVBS EN Rs
0.1 mF 1 2 3 CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 CVBS_OUT GND GND SD_EN 11 14 13 12 NCS2554
75 W
220 mF
75 W Cable
75 W CVBS
Video Processor
4 0.1 mF Y/G Pb / B Pr / R Rs Rs Rs 0.1 mF 0.1 mF 5 6 7
SD_OUT1 10 SD_OUT2 SD_OUT3 9 8
75 W 75 W 75 W
220 mF 220 mF 220 mF
75 W Cable 75 W Cable 75 W Cable
TV Y/G 75 W Pb / B 75 W Pr / R 75 W
SD_EN
Figure 14. AC-Coupled Configuration at the Input and Output
A built-in diode-like clamp is used into the chip for each channel to support the AC-coupled mode of operation. The clamp is active when the input signal goes below 0 V. The built-in clamp and level shifter allow the device to operate in different configuration modes depending on the DAC output signal level and the input common mode voltage of the video driver. When the configuration is DC-Coupled at the Inputs and Outputs the 0.1 mF and 220 mF coupling capacitors are no longer used, and the clamps are in that case inactive; this configuration provides a low cost solution which can be implemented with few external components (Figure 15). The input is AC-coupled when either the input-signal amplitude goes over the range 0 V to 1.4 V or the video source requires such a coupling. In some circumstances it may be necessary to auto-bias signals with the addition of a pullup and pulldown resistors or only pullup resistor (Typical 7.5 MW combined with the internal 800 kW pulldown) making the clamp inactive. The output AC-coupling configuration is advantageous for eliminating DC ground loop with the drawback of making the device more sensitive to video line or field tilt issues in the case of a too low output coupling capacitor. In
Shutdown Mode
some cases it may be necessary to increase the nominal 220 mF capacitor value.
If the enable pins are left open by default the circuit will be enabled. The Enable pin offers a shutdown function, so the NCS2554 can consequently be disabled when not used. The NCS2554's quiescent current reduces to 42 mA typical during shutdown mode.
DC-Coupled Output
The outputs of the NCS2554 can be DC-coupled to a 150 W load (Figure 15). This has the advantage of eliminating the AC-coupling capacitors at the output by reducing the number of external components and saving space on the board. This can be a key advantage for some applications with limited space. The problems of field tilt effects on the video signal are also eliminated providing the best video quality with optimal dynamic or peak-to-peak amplitude of the video signal allowing operating thanks to the built-in level shifter without risk of signal clipping. In this coupling configuration the average output voltage is higher than 0 V and the power consumption can be a little higher than with an AC-coupled configuration.
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NCS2554
+5V 10 mF
0.1 mF CVBS CVBS EN 1 Rs 2 3 Video Processor 4 5 6 Rs Rs 7 CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 CVBS_OUT GND GND SD_EN 14 13 12 11
75 W
75 W Cable
75 W CVBS
NCS2554
Y/G Pb / B Pr / R
Rs
SD_OUT1 10 SD_OUT2 SD_OUT3 9 8
75 W 75 W 75 W
75 W Cable 75 W Cable 75 W Cable
TV Y/G 75 W Pb / B 75 W Pr / R 75 W
SD_EN
Figure 15. DC-Coupled Input and Output Configuration
+5V 10 mF 75 W 0.1 mF CVBS CVBS EN 1 Rs 2 3 Video Processor 4 5 6 Rs Rs 7 CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 CVBS_OUT GND GND SD_EN 11 75 W 75 W 75 W 220 mF 220 mF 220 mF 75 W Cable 75 W Cable 75 W Cable TV Y/G 75 W Pb / B 75 W Pr / R 75 W 14 13 12 NCS2554 75 W 220 mF 75 W Cable 75 W CVBS1 220 mF 75 W Cable 75 W Other Display CVBS2
Y/G Pb / B Pr / R
Rs
SD_OUT1 10 SD_OUT2 SD_OUT3 9 8
SD_EN
Figure 16. Typical Application
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NCS2554
+5V 10 mF 75 W 0.1 mF CVBS CVBS EN Rs 2 3 Video Processor 4 0.1 mF Y/G Pb / B Pr / R Rs Rs Rs 0.1 mF 0.1 mF 5 6 7 0.1 mF 1 CVBS_IN CVBS_EN VCC NC SD_IN1 SD_IN2 SD_IN3 CVBS_OUT GND GND SD_EN 11 75 W 220 mF 75 W 220 mF 75 W 220 mF 75 W Cable 75 W Cable 75 W Cable TV 75 W Pb / B1 75 W 75 W 75 W 75 W 75 W 220 mF 220 mF 220 mF 75 W Cable 75 W Cable 75 W Cable TV 75 W Pb / B2 75 W 75 W Pr / R2 Y / G2 Pr / R1 Y / G1 14 13 12 NCS2554 75 W 220 mF 75 W Cable 75 W CVBS2 220 mF 75 W Cable 75 W CVBS1
SD_OUT1 10 SD_OUT2 SD_OUT3 9 8
SD_EN
Figure 17. NCS2554 Driving 2 SCARTS Simultaneously Video Driving Capability
With an output current capability of 40 mA the NCS2554 was designed to be able to drive at least 2 video display loads in parallel. This type of application is illustrated Figure 16. Figure 18 (multiburst) and Figure 19 (linearity) show that the video signal can efficiently drive a 75 W equivalent load and not degrade the video performance.
ESD Protection
with a particular attention with ESD structure able to sustain a typical value of 8 kV. This parameter is particularly important for video drivers which usually constitute the last stage in the video chain before the video output connector. The test method used follow the IEC61000-4-2 methodology. More details can be provided if requested.
All the device pins are protected against electrostatic discharge at a level of 8 kV. This feature has been considered
Figure 18. Multiburst Test with Two 150 W Loads
Figure 19. Linearity Test with Two 150 W Loads
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NCS2554
PACKAGE DIMENSIONS
TSSOP-14 CASE 948G-01 ISSUE B
14X K REF
0.10 (0.004) 0.15 (0.006) T U
S
M
TU
S
V
S
N
2X
L/2
14
8
0.25 (0.010) M
L
PIN 1 IDENT. 1 7
B -U-
N F DETAIL E K
0.15 (0.006) T U
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSION A DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH OR GATE BURRS SHALL NOT EXCEED 0.15 (0.006) PER SIDE. 4. DIMENSION B DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. INTERLEAD FLASH OR PROTRUSION SHALL NOT EXCEED 0.25 (0.010) PER SIDE. 5. DIMENSION K DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.08 (0.003) TOTAL IN EXCESS OF THE K DIMENSION AT MAXIMUM MATERIAL CONDITION. 6. TERMINAL NUMBERS ARE SHOWN FOR REFERENCE ONLY. 7. DIMENSION A AND B ARE TO BE DETERMINED AT DATUM PLANE -W-. DIM A B C D F G H J J1 K K1 L M MILLIMETERS INCHES MIN MAX MIN MAX 4.90 5.10 0.193 0.200 4.30 4.50 0.169 0.177 --- 1.20 --- 0.047 0.05 0.15 0.002 0.006 0.50 0.75 0.020 0.030 0.65 BSC 0.026 BSC 0.50 0.60 0.020 0.024 0.09 0.20 0.004 0.008 0.09 0.16 0.004 0.006 0.19 0.30 0.007 0.012 0.19 0.25 0.007 0.010 6.40 BSC 0.252 BSC 0_ 8_ 0_ 8_
S
J J1
SECTION N-N -W-
C 0.10 (0.004) -T- SEATING
PLANE
D
G
H
DETAIL E
SOLDERING FOOTPRINT*
7.06 1
0.36
14X
14X
1.26
*For additional information on our Pb-Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D.
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages. "Typical" parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including "Typicals" must be validated for each customer application by customer's technical experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PUBLICATION ORDERING INFORMATION
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EEE CCC EEE CCC CCC
A -V-
K1
0.65 PITCH
DIMENSIONS: MILLIMETERS
NCS2554/D

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