FMS6151_08 FAIRCHILD | Alldatasheet

Document overview

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Technical content

Features

5th order 8MHz (SD) fi lter Power down to 25nA DC-coupled input AC- or DC-coupled output DC coupled output eliminate need for AC-coupling cap SAG correction reduces size of AC-coupling cap Fixed gain of 6dB Small, lead-free, Micropak ® packaging

Applications

Personal Digital Assistants Set Top Boxes Digital Video Recorders

Description

The FMS6151 low cost, integrated, video fi lter is intended to replace passive LC fi lters and drivers in low voltage portable video applications. The 5th order fi lter provides better image quality compared to typical 2nd and 3rd order passive solutions. The FMS6151 is intended to be directly driven by a DC- coupled DAC output. The output can drive an AC or DC- coupled doubly terminated coax(150Ω) load. DC-coupling the output removes the need for an expensive output coupling capacitor. If an AC-cou pled output is needed, the SAG correction circuit can be used to reduce the AC out- put coupling capacitor value. Input DC levels are offset by approximately 100mV. This internal level shift is incorpo- rated to prevent sync pulse clipping. Offering SAG correction, fi xed gain of 6dB, and a 5th order low pass fi lter in a tiny space saving package (Micropak) makes the FMS6151 well suited for space sensitive appli- cations such as cellular phones and digital cameras.

Ordering Information

Part Number Package Operating Temperature Range Packaging Method FMS6151L6X uPAK-6 -40°C to +105°C Reel Block Diagram Figure 1. Block Diagram All packages are lead free per JEDEC: J-STD-020B standard.

Figure 2. Pin Assignments

2 GND Input Ground

3 SAG Input SAG

6 EN Input Enable 0 = Disabled 1 = Enabled

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6151 Rev. 1.0.3 3 FMS6151 — Ultra Portable 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 Maximum Output Current, Do Not Exceed 45mA Reliability Information Parameter Min. Typ. Max. Unit Junction Temperature 150 °C Storage Temperature Range -65 150 °C Thermal Resistance ( θJA), JDEC standard, multi-layer test boards, still air. 45 mA Recommended Operating Conditions The Recommended Operating Conditions table defi nes the conditions for actual device operation. Recommended operating conditions are specifi ed to ensure optimal performance to the datasheet specifi cations. Fairchild does not recommend exceeding them or designing to absolute maximum ratings. Parameter Min. Typ. Max. Unit Operating Temperature Range -40 +105 °C Supply Voltage Range 2.5 3.3 5.25 V

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6151 Rev. 1.0.3 4 FMS6151 — Ultra Portable Video Filter Driver TA = 25°C, VCC = 2.7V, Rs = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to VOUT pin; unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units ICC Supply Current(1) VCC = 2.7V, no load 3.8 6.4 mA VIN Video Input Voltage Range Referenced to GND 1.2 V pp Vols Output Level Shift (1) VIN = 0V 50 200 350 mV PSRR Vols over power supply V CC = 2.7V to 3.3V 40 dB ISH Shut Down Current 25 nA Vil Disabled Logic Low(1) 0 0.8 V Vih Enabled Logic High(1) VCC *0.6 V CC V tON Enable Time 1.5 μs tOFF Disable Time 50 ns TA = 25°C, VCC = 2.7V, Rs = 37.5Ω, AC-coupled output into 150Ω load, SAG pin connected to VOUT pin; unless otherwise noted. Symbol Parameter Conditions Min. Typ. Max. Units AV Gain(1) DC 6.0 6.2 6.4 dB f1dB -1dB Bandwidth(1) 5.0 6.7 MHz fc -3dB Bandwidth 8 MHz fSB Attenuation(1) (stopband reject) 27MHz 40 47 dB DG Differential Gain 0.5 % DP Differential Phase 0.5 ° SNR Signal-to-Noise Ratio NTC-7 weighting, 100kHz to 4.2MHz 78 dB Note: 100% tested at 25°C1.

3.6 Icc (mA)

Figure 9. Supply Current vs. Temperature Figure 10. Shutdown Current vs. Temperature

© 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6151 Rev. 1.0.3 7 FMS6151 — Ultra Portable Video Filter Driver

Application Information

The FMS6151 is intended to be directly driven by a DC coupled DAC output. The input common mode range of the FMS6151 is 1.2V pp, ground referenced. Enable/Shutdown The FMS6151 has a shutdown feature that disables the output and reduces the quiescent current to ~25nA. This feature is especially useful in portable applications, such as cellular phones, hand held gaming devices, and video cameras requiring video fi ltering and drive capability. Internal Level Shift The FMS6151 has an internal level shift circuit to avoid sync tip clipping. The output signal is shifted 200mV toward the V CC rail to help prevent clipping. This offset is extremely useful when DC coupled out or using SAG correction. SAG Correction Sag correction provides excellent performance with a small output coupling capacitor. It eliminates the 220μF - 1000μF output cou pling capacitors traditionally used. The traditional output circuit (220μF into 150Ω load) creates a single pole (-3dB) at 5Hz. Reducing this capacitor causes excessive phase shift, resulting in video fi eld tilt which can prevent proper recovery of the syn chronization signals. The FMS6151 sag correction circuit provides a small amount of peaking, which provides compensation of the phase response, signifi cantly reducing video fi eld tilt. The SAG correction circuit allows you to decrease the large, 220μF, output coupling capacitor. A 22μF is used for sag correction and a 47 μF is used for the out put coupling capacitor, extremely smaller and cheaper than the traditional circuit requirements. Output Confi guration The FMS6151 output is a low impedance voltage driver. It is capable of driving an AC or DC coupled single load. For more application information, please refer to our

Figure 11. 6-Lead MicroPAK Package specifi cally the warranty therein, which covers Fairchild products.

  1. DIMENSIONS ARE IN MILLIMETERS
  2. CONFORMS TO JEDEC STANDARD M0-252 VARIATION UAAD
  3. DRAWING CONFORMS TO ASME Y14.5M-1994

0.075 X 45

0.10 C B A

FMS6151 — Ultra Portable Video Filter Driver © 2006 Fairchild Semiconductor Corporation www.fairchildsemi.com FMS6151 Rev. 1.0.3 9