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TPF1441C

72M HD Composite Video Filter Driver with Clamped input Comparator

Feartures



Wide Power Supply: +3.0V to +5.5V Single Supply



Robust ESD Protection:



Robust 8kV – HBM and 2kV – CDM ESD Rating



Green Product, MSOP8/SOP8 Package

Video Filter:



HDTV Video Filter Support Composite 1080p/60



Optimized 6th-order Butterworth Video reconstruction filter：



HD Channel: -3dB BW 72MHz



Support Multiple Input Biasing:



Transparent Clamping for DC restoration



Provide 80-mV Level-Shift when DC-Coupled



Very Low Quiescent Current: 11.5 mA(at 3.3V, Typical)



6dB Gain(2V/V), Rail to Rail Output



AC- or DC-Coupled Output Driving Dual Video Loads (75Ω)

Comparator:



Fast Response Time: 68 ns Propagation Delay



Offset Voltage: ± 3.0 mV Maximum



Internal Hysteresis Ensures Clean Switching



Push-Pull, CMOS/TTL Compatible Output



Same DC clamping circuit as video input.

Applications



Video Signal Amplification



Set-Top Box Video Driver



PV、DVD Player Video Buffer



Video Buffer for Portable or USB-Powered Video Devices



HDTV

Description

The TPF1441C is a low power, 72M HD composite video

filter and comparator on a single chip. Drawing less than 11.5mA

supply current over the full operating temperature range,

TP1441C operates from a single 3.0V to 5.5V power supply.

TPF1441C integrates high-performance low-cost 72MHz

composite video reconstruction filter, however it has very low

power consumption. The filter is sixth-order Butterworth

characteristics that are useful as digital-to-analog converter

(DAC) reconstruction filters or as analog-to-digital converter

(ADC) anti-aliasing filters. The HD filters can actually support

720p/1080p CVI/TVI/AHD platform. Moreover the filter can be

bypassed to support wider bandwidth video application.

The TPF1441C’s on-board comparator incorporates

3PEAK’s proprietary and patented design techniques to achieve

the ultimate combination of high-speed (68ns propagation delay

under 3.0~5.5V wide supply range) and low power consumption ,

The internal input hysteresis eliminates output switching due to

internal input noise voltage, reducing current draw. The PUSH-

PULL output supports rail-to-rail output swing, and interfaces

with CMOS/TTL logic.

TPF1441C is available in SOP-8 package (TPF1441C-SR)

and

MSOP-8

package

(TP1441C-VR).

Its

operation

temperature range is from −40°C to +85°C.

Related Resources

AN-1201: Application notes of TPF1XX

Pin Configuration (Top View)

8

6

5

7

3

2

1

4

AIN

+Vs

HD OUT

VREF

HD IN

GND

DOUT

TPF1441C

MSOP 8

NC

Pin Name

Pin Function

AIN

Non-Inverting Input of the Comparator

DOUT

Comparator Output

VREF

Inverting Input of Comparator

HD IN

HD video input, LPF = 72 MHz

Positive Power Supply

GND

Ground

HD OUT

HD video output, LPF = 72 MHz

NC

Not connect