FMS6146

FMS6146_07 FAIRCHILD | Alldatasheet

Document overview

• Manufacturer or author: Fairchild Semiconductor Corporation
• PDF pages: 10

Technical content

Features

Six 4th-order 8MHz (SD) fi 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 TSSOP-14 package

Applications

Personal Video Recorders (PVR) Video On Demand (VOD)

Description

The FMS6146 Low-Cost Video Filter (LCVF) is intended to replace passive LC fi lters and drivers with a low-cost integrated device. Six 4th-order fi lters provide improved image quality compared to typical 2nd or 3rd-order passive solutions. The FMS6146 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 Applications section for details).

Ordering Information

Part Number Package Pb-Free Operating Temperture Range Packaging Method FMS6146MTC14 TSSOP-14 Yes -40°C to +85°C Tube FMS6146MTC14X TSSOP-14 Yes -40°C to +85°C Tape and Reel Functional Block Diagram IN1 IN2 IN3 IN4 IN5 IN6 OUT1 OUT2 OUT3 OUT4 OUT5 OUT6 8MHz, 4th order 6dBTransparent Clamp 6dBTransparent Clamp 6dBTransparent Clamp 6dBTransparent Clamp 6dBTransparent Clamp 6dBTransparent Clamp

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6146 Rev. 1.0.8 2 FMS6146 Low-Cost Six-Channel 4th-Order Standard Defi nition Video Filter Driver Pin Confi guration FMS6146 14-pin TSSOP IN1 OUT1 IN2 IN3 OUT3 VCC IN4 IN5 IN6 OUT2 GND OUT5 OUT6 OUT4 Pin Assignments Pin# Pin Name Type Description

1 IN1 Input Video input, Channel 1

2 IN2 Input Video input, Channel 2

3 IN3 Input Video input, Channel 3

CC Input +5V supply, do not fl oat

5 IN4 Input Video input, Channel 4

6 IN5 Input Video input, Channel 5

7 IN6 Input Video input, Channel 6

8 OUT6 Output Filtered video output, Channel 6

9 OUT5 Output Filtered video output, Channel 5

10 OUT4 Output Filtered video output, Channel 4

11 GND Output Must be tied to ground, do not fl oat

12 OUT3 Output Filtered video output, Channel 3

13 OUT2 Output Filtered video output, Channel 2

14 OUT1 Output Filtered video output, Channel 1

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6146 Rev. 1.0.8 3 FMS6146 Low-Cost Six-Channel 4th-Order Standard Defi nition Video Filter Driver 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. Max. Unit DC Supply Voltage -0.3 6 V Analog and Digital I/O -0.3 V CC + 0.3 V Output Channel - Any One Channel (Do Not Exceed) 50 mA Reliability Information Symbol Parameter Min. Typ. Max. Unit TJ Junction Temperature 150 °C TSTG Storage Temperature Range -65 +150 °C TL Lead Temperature (Soldering, 10 seconds) 300 °C ΘJA Thermal Resistance, JEDEC Standard Multi-layer Test Boards, Still Air 90 °C/W Recommended Operating Conditions The Recommended Operating Conditions table defi nes the conditions for actual device operation. Recommended ope- rating conditions are specifi ed to ensure optimal performance to the datasheet specifi cations. Fairchild does not recom- mend exceeding them or designing to absolute maximum ratings. Parameter Min. Typ. Max. Unit Operating Temperature Range -40 +85 °C VCC Range +4.75 +5.0 +5.25 V

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6146 Rev. 1.0.8 4 FMS6146 Low-Cost Six-Channel 4th-Order Standard Defi 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) FMS6146 (No Load) 35 55 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 Notes: 100% tested at 25°C. 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 5.6 6.0 6.6 dB f 1dB -1dB Bandwidth(1) All Channels 4.5 6.8 MHz f c -3dB Bandwidth All Channels 7.8 MHz f SB Attenuation (Stopband Reject) All Channels at f = 27MHz 48 dB dG Differential Gain All Channels 0.3 % d φ 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 Notes: 100% tested at 25°C.

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 6. Typical Application Diagram

Dimensions are in millimeters unless otherwise noted. Figure 16. TSSOP-14 Package

FMS6146 Low-Cost Six-Channel 4th-Order Standard Defi nition Video Filter Driver © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6146 Rev. 1.0.8 10