feature

FMS6419 pin compatible version for 4:2:2 video

External delay compensation required

Sixth order standard/HD video filter

YPbPr 4:2:2 filter (8/30MHz:4/15MHz:4/15MHz)

YC standard definition filter (8MHz) integrated summer output

DC coupled input, AC coupled output

Output provides 6dB gain into 150Ω AC coupled load

Dual multiplex input

0.3% differential gain, 0.1° differential phase only 5V

Lead-free (lead-free) packaging

application

cable set top box

satellite set top box

DVD player

HDTV

Personal Video Recorder (PVR) Video on Demand (VOD)

illustrate

The FMS6366 filter driver provides a comprehensive set of filters for STB or DVD applications. This section consists of the sixth section to order filters with selectable cutoffs for SD or HD. The filter is in a 4:2:2 configuration, making the Y1 switch between 8MHz (SD) and 30MHz (HD). Pb and Pr channels at 4MHz (SD) and 15MHz (HD). The required delay compensation must be performed in the digital domain and then performed by the FMS6366. An additional S-video path is provided for SD signals. Both the Y2 and C signals are filtered at 8MHz. A compound summer includes providing Y2 and C based compound outputs. A 2:1 multiplexer is provided on each filter channel to select lines for the YPbPr and YC signals. All inputs accept DC-coupled ground-referenced 1Vpp input signals. The filter output includes a gain of +6dB, resulting in a 2Vpp signal with AC coupled dual video loads (75Ω).

DC specification

(TC=25oC, Vi=1VPP; VCC=5.0V, all inputs AC-coupled 0.1mF, all outputs AC-coupled 220mF to 150o, referenced to 400kHz; unless otherwise stated)

Standards define electrical specifications

(TC=25°C, Vi=1VPP; VCC=5.0V, HD/N_SD=0, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

High Definition Electrical Specifications

(TC=25°C, Vi=1Vpp; VCC=5.0V, HD/N_SD=1, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

High Definition Electrical Specifications (continued)

(TC=25°C, Vi=1Vpp; VCC=5.0V, HD/N_SD=1, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

Note:

1. 100% tested at 25°C

ABSOLUTE MAXIMUM RATINGS (DEVICE MAY DAMAGE)

Standard defines typical performance characteristics

(TC=25°C, Vi=1VPP; VCC=5.0V, HD/N_SD=0, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

Standard defines typical performance characteristics

(TC=25°C, Vi=1VPP; VCC=5.0V, HD/N_SD=0, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

High Definition Typical Performance Characteristics

(TC=25°C, Vi=1Vpp; VCC=5.0V, HD/N_SD=1, RSOURCE=37.5Ω, all inputs AC-coupled 0.1µF, all outputs AC-coupled 220µF to 150Ω, referenced to 400kHz; unless otherwise noted)

General

FMS6366 is a set-top box or DVD application. This part consists of three 4:2:2 6th order filters with selectable 30/15MHz or 8/4MHz frequencies for YPbPr and dual 8MHz filters for YC, with composite sum. Two to one. There is a multiplexer on the triple filter for the aux input of the composite channel. Three filters are used for the YPbPr signal. All channels accept DC-coupled ground-referenced 1Vpp signals. The filter outputs a 2Vpp signal AC-coupled terminal load. The FMS6366 is a next-generation filter solution from Fairchild for set-extended filtering needs of semiconductor set-top boxes and DVD players. This product offers optional 4:2 HD/SD filtering on YPbPr channels. Therefore FMS6366 specifies the requirements for a single set-top box to be compatible with various resolution standards. In addition, the product provides additional filter video (CV) outputs for Y, C, and Composite. Multiplexers on the YPbPr and CV channels provide further flexibility. For DVD applications, the product provides filtering and output 6-way output driver amplification. These include Y1, Pb, Pr, Y2, C and CV outputs. For set-top boxes, this product provides two filtering channels for flexible selection of multi-resolution standard high-order filtered video. Additional flexibility is provided by Y (Luma) and C (Chroma) filters with composite sums. All channels provide 6dB gain, accept 1V ground referenced inputs, and drive AC-coupled loads. Functional DC Level The DC level of the input signal must be between 0.0V and 1.3V at any given time to use optimal headroom and avoid clipping at the output. Y channel via ground sync type. Pb, Pr and C channels should be concentrated around 0.5V. This will ensure that the filter will use the best headroom and avoid clipping.

DC-coupled output applications

The 220uF capacitor is coupled with the 150Ω termination to form a high pass filter that blocks DC while passing video and avoiding tilt. Lower values such as 10uF cause the output signal to slope unacceptably. With AC coupling, the average DC level is zero. Therefore, the output voltages of all channels will be centered around zero. DC coupling allows the output of the FMS6366 but is not recommended. There are a few compromises: The average DC output level is 2V. Each output will dissipate a nominal increase of 40 MW. The application will need to accommodate a 1V DC offset sync tip. Additionally, it is recommended to limit each output to a 150Ω load. The FMS6366 is specified to operate with output currents typically less than 50mA, greater than the output current loading of dual (75Ω) video. The current of the internal amplifier is limited to the maximum value. 100mA, should be able to withstand short-term short-circuit conditions, but this capability is not guaranteed.

Drive digital pins

FMS6366 digital inputs with most 3.3V and 5V logic. Confirm that Vih and Vil are within the specified limits.

application

A typical application of the FMS6366 is shown in the figure.

The chroma filter is half the bandwidth of the luma filter. Therefore, the propagation delay time of filtering through the chroma filter is longer than that of the luma filter. In the standard definition (SD) case, the chroma filter propagation delay is typically 60 nanoseconds longer than the luma filter. That's three clock cycles at 54MHz, so by adding a digital delay, as shown and in Fig. Setting the chroma filter propagation delay in high definition (HD) is typically 15ns longer than the luma filter. That's one clock cycle at 74.25MHz, so it's also easy to correct by adding a digital delay to the luma path.