TPF1441
72M HD Composite Video Filter Driver with Comparator
Feartures
Description
Wide Power Supply: +3.0V to +5.5V Single Supply
Robust ESD Protection:
The TPF1441 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,
TP1441 operates from a single 3.0V to 5.5V power supply.
TPF1441 integrate high-performance low-cost 72MHz
composite video reconstruction filter, it combine excellent video
performance and low power consumption perfectly. It
Robust 8kV – HBM and 2kV – CDM ESD Rating
Green Product, SOP-8 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:
Provide 80-mV Level-Shift when DC-Coupled
incorporates one high-definition (HD) filter channel. The filter
feature 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 be bypassed to support HDCVI 1080i/720p video.
The TPF1441’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.
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
Applications
TPF1441 is available in SOP-8 package (TPF1441-SR). Its
operation temperature range is from −40°C to +85°C.
Video Signal Amplification
Set-Top Box Video Driver
Related Resources
PV、DVD Player Video Buffer
Video Buffer for Portable or USB-Powered Video Devices
HDTV
AN-1201:Application notes of TPF1XX
Pin Configuration (Top View)
Pin Name
AIN
Pin Function
Non-Inverting Input of the Comparator
Comparator Output
1
2
3
4
8
7
6
5
AIN
VREF
DOUT
GND
DOUT
VREF
HD IN
+VS
Inverting Input of Comparator
HD video input, LPF = 72 MHz
Positive Power Supply
TPF1441
8 LEAD SOIC
SHDN
HD OUT
+Vs
HD IN
GND
Ground
HD OUT
HD video output, LPF = 72 MHz
High on this pin logic low to shut down the device.
Range: Logic high enables the device and logic low
Shut down the device. This pin defaults to logic high
if left open.
SHDN
www.3peakic.com.cn
Rev.A.2
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