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Document overview
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Technical content
Features
Three 4th-order 8MHz (SD) f lters Drives single, AC- or DC-coupled, video loads (2Vpp, 150Ω) Drives dual, AC- or DC-coupled, video loads (2Vpp, 75Ω) Transparent input clamping AC- or DC-coupled inputs AC- or DC-coupled outputs DC-coupled outputs eliminate AC-coupling capacitors 5V only Robust 8kV ESD protection Lead-free SOIC-8 package
Applications
Personal Video Recorders (PVR) Video On Demand (VOD)
Description
The FMS6143 Low-Cost Video Filter (LCVF) is intended to replace passive LC f lters and drivers with a low-cost integrated device. Three 4th-order f lters provide improved image quality compared to typical 2nd or 3rd-order passive solutions. The FMS6143 may be directly driven by a DC-coupled DAC output or an AC-coupled signal. Internal diode clamps and bias circuitry may be used if AC-coupled inputs are required (see Applications section for details). The outputs can drive AC- or DC-coupled single (150Ω) or dual (75Ω) loads. DC-coupling the outputs removes the need for output coupling capacitors. The input DC- levels are offset approximately +280mV at the output (see the Applications section for details). Related Application Notes AN-8002 — : http://www.onsemi.com/pub/Collateral AN-8002.PDF AN-6024 — http://www.onsemi.com/pub/Collateral/ AN-6024.pdf.pdf AN-6041 — http://www.onsemi.com/pub/Collateral/AN-6041.pdf.pdf
Ordering Information
Temperature Range Eco Status Package Packaging Method FMS6143CSX -40 to +85°C RoHS SOIC-8 Tape and Reel Functional Block Diagram Figure 1. AC-Coupled Inputs and Outputs
Figure 2. AC-Coupled Inputs and Outputs
1 IN1 Input Video input, Channel 1
2 IN2 Input Video input, Channel 2
3 IN3 Input Video input, Channel 3
5 GND Output Must be tied to ground, do not f oat
6 OUT3 Output Filtered output, Channel 3
7 OUT2 Output Filtered output, Channel 2
8 OUT1 Output Filtered output, Channel 1
FMS6143 — Low-Cost Three-Channel 4th-Order Standard Def nition Video Filter Driver Absolute Maximum Ratings The “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. The device should not be operated at these limits. The parametric values def ned in the Electrical Characteristics tables are not guaranteed at the absolute maximum ratings. The “Recommended Operating Conditions” table def nes the conditions for actual device operation. Symbol Parameter Min. Max. Unit VCC DC Supply Voltage -0.3 6.0 V Analog and Digital I/O -0.3 V CC + 0.3 V Output Channel - Any One Channel (Do Not Exceed) 50 mA Note: Functional operation under any of these conditions is NOT implied. Performance and reliability are guaranteed only if operating conditions are not exceeded. Reliability Information Symbols Parameter Min. Typ. Max. Unit TJ Junction Temperature 150 °C TSTG Storage Temperature Range -65 +150 °C TL Lead Temperature (Soldering, 10s) +300 °C θJA Thermal Resistance, JEDEC Standard Multi-layer Test Boards, Still Air 115 °C/W Electrostatic Discharge Information Symbols Parameter Max. Unit ESD Human Body Model, JESD22-A114 6.5 kVCharged Device Model, JESD22-C101 2.0 Symbols Parameter Min. Typ. Max. Unit TA Operating Temperature Range -40 +85 °C VCC VCC Range 4.75 5.00 5.25 V www.onsemi.com
FMS6143 — Low-Cost Three-Channel 4th-Order Standard Def nition Video Filter Driver TA = 25°C, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1μF; all outputs are AC-coupled with 220μF into 150Ω loads; unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units I CC Supply Current(1) FMS6143 (No Load) 19 27 mA V IN Video Input Voltage Range Referenced to GND if DC-coupled 1.4 V pp PSRR Power Supply Rejection DC (All Channels) -50 dB TA = 25°C, VIN = 1Vpp, VCC = 5V, RSOURCE = 37.5Ω; all inputs are AC-coupled with 0.1μF; all outputs are AC-coupled with 220μF into 150Ω loads; unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units AV Channel Gain (1) All Channels 6.0 6.2 6.4 dB f 1dB -1dB Bandwidth(1) All Channels 5.6 6.5 MHz f c -3dB Bandwidth All Channels 7.7 MHz f SB Attenuation (Stopband Reject) All Channels at f = 27MHz 48 dB DG Dif ferential Gain All Channels 0.3 % DP Differential Phase All Channels 0.6 ° THD Output Distortion (All Channels) V OUT = 1.8Vpp, 1MHz 0.4 % X TALK Crosstalk (Channel-to-Channel) at 1MHz -60 dB SNR Signal-to-Noise Ratio All Channels, NTC-7 Weighting: 100kHz to 4.2MHz 75 dB t pd Propagation Delay Delay from Input-to-Output, 4.5MHz 59 ns Note: 100% tested at 25°C.1. www.onsemi.com
The following circuit may be used for direct DC-coupled drive by DACs with an output voltage range of 0V to 1.4V. AC-coupled or DC-coupled outputs may be used with AC-coupled outputs, offering slightly lower power dissipation. Figure 8. Typical Application Diagram
Traces should run on top of the ground plane at all times. No trace should run over ground/power splits. Avoid routing at 90-degree angles. Minimize clock and video data trace length differences. beyond the device body at least 0.5 inches on all sides. Include a metal paddle under the device on the top layer. Minimize all trace lengths to reduce series inductance. (bottom plane), each other on the PCB. Maximize thermal performance of the PCB. Consider using 70μm of copper for high-power designs. Use vias in power pad to tie adjacent layers together. board area, not copper thickness. Modeling techniques provide a f rst-order approximation. back-matching resistor, followed by the 75 Ω video cable. tilt) is kept as low as possible. sitic capacitance and inductance effect on the output driver. resistor should be no greater than 0.1 inches. Figure 18. Distance from Device Pin to Series high-frequency performance and thermal characteristics. steps and recommended routing rules listed below.
Figure 19. SOIC-8 Package B) ALL DIMENSIONS ARE IN MILLIMETERS. D) LANDPATTERN STANDARD: SOIC127P600X175-8M.
1.75 MAX
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