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
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.
Video Filter:
HDTV Video Filter Support Composite 1080p/60
Optimized 6th-order Butterworth Video reconstruction filter：
HD Channel: -3dB BW 72MHz
Transparent Clamping for DC restoration
Provide 80-mV Level-Shift when DC-Coupled
Support Multiple Input Biasing:
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
Related Resources
AN-1201: Application notes of TPF1XX
Pin Configuration (Top View)
Pin Name
AIN
Pin Function
Non-Inverting Input of the Comparator
Comparator Output
Inverting Input of Comparator
HD video input, LPF = 72 MHz
Positive Power Supply
Ground
HD video output, LPF = 72 MHz
Not connect
AIN
NC
HD OUT
+Vs
1
2
3
4
8
VREF
DOUT
GND
HD IN
DOUT
VREF
HD IN
+V
S
GND
HD OUT
NC
TPF1441C
MSOP 8
7
6
5
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Rev.0
TPF1441C
72M HD Composite Video Filter Driver with Clamped input Comparator
Function Block
Sync-Tip Clamp
( DC Restore
)
gm
+Vs
TPF1441C
80mV
Level
Shift
LPF
6dB
HD Input
+Vs
gm
6
th
- order
FHD Filter
VREF
AIN
Clamp for DC
Restore
80mV
Level
Shift
DOUT
+Vs
NC
GND
Order Information
Order Number
TPF1441C-SR
TPF1441C-VR
Operating Temperature Range
-40 to 85°C
-40 to 85°C
Package
8-Pin SOP
8-Pin MSOP
Marking Information
TPF1441C
TPF1441C
Transport Media, Quantity
Tape and Reel, 4000
Tape and Reel, 3000
Absolute Maximum Ratings*
Parameters
Power Supply, V
DD
to GND
V
IN
I
O
T
J
T
A
T
STG
TL
θ
JA
Input Voltage
Output Current
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 sec)
8-Lead SOP
Value
6.0
V
DD
+ 0.3V to GND - 0.3V
65
150
–45 to 85
–65 to 150
300
158
mA
°C
°C
°C
°C
°C/W
Units
V
* Note:
Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to
any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime.
(1) This data was taken with the JEDEC low effective thermal conductivity test board.
(2) This data was taken with the JEDEC standard multilayer test boards.
ESD, Electrostatic Discharge Protection
Symbol
HBM
CDM
Parameter
Human Body Model ESD
Charged Device Model ESD
Condition
MIL-STD-883H Method 3015.8
JEDEC-EIA/JESD22-C101E
Minimum Level
8
2
Unit
kV
kV
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Rev.0
TPF1441C
72M HD Composite Video Filter Driver with Clamped input Comparator
Electrical Characteristics-Video Filter Part
All test condition is VDD = 3.3V, TA = +25°C, RL = 150Ω to GND, unless otherwise noted.
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Input Electrical Specifications
V
DD
I
DD
I
CLAMP-DOWN
I
CLAMP-UP
V
CLAMP
R
IN
AV
V
OLS
V
OL
V
OH
PSRR
Supply Voltage Range
Quiescent current (I
Q
)
(1)
Clamp Discharge Current
Clamp Charge Current
Input Voltage Clamp
(2)
Input Impedance
Voltage Gain
Output Level Shift Voltage
Output Voltage Low Swing
Output Voltage High Swing
Power Supply Rejection Ratio
V
DD
= 3.3V, V
IN
= 500mV, no load
V
DD
= 5.0V, V
IN
= 500mV, no load
V
IN
=300mV, measure current
V
Y
= -0.2V
I
Y
= -100μA
0.5V < V
Y
< 1V
V
IN
=0.5V,1V or 2V
R
L
=150Ω to GND
V
IN
= 0V, no load, input referred
V
IN
= -0.3V, R
L
=75Ω
V
IN
= 3V, R
L
=75Ω to GND (dual load)
ΔV
DD
= 3.3V to 3.6V
ΔV
DD
= 5.0V to 5.5V, 50Hz
V
IN
= 2V, 10Ω, output to GND
V
IN
=0.1V, output short to V
DD
V
DD
= 3.0V to 5.5V
V
DD
= 3.0V to 5.5V
V
IN
= 500mV, V
OUT
to 1%
V
IN
= 500mV, V
OUT
to 1%
1000
1000
65
65
1.6
0.4
0.6
-1.5
-40
0.5
5.91
54
3.0
11.5
15
2.0
-1.7
0
3
6.01
80
0.05
3.18
61
67
6.03
124
+40
5.5
14.27
18.53
4.8
V
mA
mA
μA
mA
mV
MΩ
dB
mV
V
V
dB
dB
mA
mA
V
V
ns
ns
I
SC
V
IH
V
IL
t
ON
t
OFF
Short-circuit current
Disable Threshold
Enable Threshold
Enable Time
Disable Time
AC Electrical Specifications
f
-1dB
f
-3dB
dG
dP
THD
-1dB Bandwidth
-3dB Bandwidth
Differential Gain
Differential Phase
Total Harmonic
Distortion
Group
Delay
Variation
HD Channel
HD Channel
HD Channel
R
L
=150Ω
R
L
=150Ω
Video input range 1V
Video input range 1V
f=10MHz, V
OUT
=1.4V
PP
f=22MHz, V
OUT
= 1.4V
PP
HD Channel
f = 100kHz to 27MHz
53.1
63.7
63.2
71.5
0.4
0.7
0.15
0.6
2.2
72.9
80.1
MHz
MHz
%
°
%
%
ns
D/DT
f = 100kHz to 60MHz
f = 1MHz, V
OUT
=1.4V
PP
f= 100kHz to 60MHz
f = 10MHz
-68
6.0
-74
64
0.5
ns
dB
dB
Ω
X
TALK
SNR
R
OUT_AC
Channel Crosstalk
Signal-to-
Noise Ration
HD Channel
Output Impedance
*Note:
(1). 100% tested at TA=25°C.
(2). Comparator Clamp has the same specification．
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Rev.0
TPF1441C
72M HD Composite Video Filter Driver with Clamped input Comparator
Electrical Characteristics-Comparator Part
All test condition is VDD = 3.3V, TA = +25°C, VIN+ = VDD, VIN- = 1.2V, RPU=10kΩ, CL =15pF, unless otherwise noted.
SYMBOL
V
DD
V
OS
V
OS
TC
V
HYST
V
HYST
TC
I
B
I
OS
R
IN
C
IN
CMRR
V
CM
PSRR
V
OH
V
OL
I
SC
I
Q
t
R
t
F
T
PD+
T
PD-
T
PDSKEW
PARAMETER
Supply Voltage
Input Offset Voltage
Note 1
Input Offset Voltage Drift
Note 1
Input Hysteresis Voltage
Note 1
Input Hysteresis Voltage Drift
Note 1
Input Bias Current
Input Offset Current
Input Resistance
Input Capacitance
Common Mode Rejection Ratio
Common-mode Input Voltage Range
Power Supply Rejection Ratio
High-Level Output Voltage
Low-Level Output Voltage
Output Short-Circuit Current
Quiescent Current per Comparator
Rising Time
Falling Time
Propagation Delay (Low-to-High)
Propagation Delay (High-to-Low)
Propagation Delay Skew
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
Overdrive=100mV, V
IN-
=1.2V
I
OUT
=-1mA
I
OUT
=1mA
Sink or source current
25
46
5
5
68
72
-4
58
Differential
Common Mode
V
CM
= V
SS
to V
DD
50
V
DD
-0.2
60
V
DD
-0.3
V
SS
+0.3
75
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
V
CM
= 1.2V
4
CONDITIONS
MIN
3
-3
±0.6
0.3
6
20
6
4
> 100
2
4
70
V
SS
+0.2
8
TYP
MAX
5.5
+3
UNITS
V
mV
μV/°C
mV
μV/°C
pA
pA
GΩ
pF
dB
V
dB
V
V
mA
μA
ns
ns
ns
ns
ns
Note 1:
The input offset voltage is the average of the input-referred trip points. The input hysteresis is the difference between the
input-referred trip points.
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Rev.0
TPF1441C
72M HD Composite Video Filter Driver with Clamped input Comparator
Typical Performance Characteristics-Video Filter Part
All test condition is VDD = 3.3V, TA = +25°C, RL = 150Ω to GND, unless otherwise noted.
5
4
NORMALIZED GAIN (dB)
3
2
1
0
-1
-2
-3
-4
-3dB@72MHz
V
DD
=3.3V
R
L
=150Ω
C
L
=15pF
1M
10M
FREQUENCY (Hz)
100M
-5
100k
Figure3. Small-Scale Frequency Response
1
0.8
NORMALIZED GAIN (dB)
0.6
0.4
0.2
0
-0.2
-0.4
-0.6
-0.8
V
DD
=3.3V
R
L
=150Ω
C
L
=15pF
1M
10M
FREQUENCY (Hz)
100M
-0.1dB@50MHz
Figure4. Large-Scale Frequency Response
0
-100
-200
-300
-400
-500
V
DD
=3.3V
R
L
=150Ω
C
L
=15pF
1M
10M
FREQUENCY (Hz)
100M
-1
100k
PHASE (
O
)
-600
100k
Figure5. Gain Vs. Frequency With CLOAD
Figure6. Gain Vs. Frequency
Figure7. Group Delay vs Frequency
Figure8. Stop Band Attenuation
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Rev.0
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