TPF134A-V2R [3PEAK]
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters;
| 型号： | TPF134A-V2R |
| 厂家： | 
3PEAK |
| 描述： | 4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters |
| 文件： | 总11页 (文件大小：538K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Features
Description
TPF134A is a specially designed for consumer applications,
high-performance, low-cost video reconstruction filter, it
1-SDTV Video Filter Support CVBS
3-HDTV Video Filter Support Y'Pb'Pr'-1080i/720p,
combine excellent video performance and low power
consumption perfectly. It incorporates one standard-definition
(CVBS) and three high-definition (HD) filter channels. All
filters 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 filters. The
HD filters can be bypassed to support 1080p60 video or up
to quad extended graphics array (QXGA) RGB video.
R'G'B' or VGA/SVGA/XGA
Optimized 6th-order Butterworth Video reconstruction
filter：
CVBS Channel: -3dB at 9MHz
HD Channel: -3dB ≥ 36MHz
Support Multiple Input Biasing:
-
-
-
Provide 80-mV Level-Shift when DC-Coupled
Transparent Input Clamping when AC-Coupled
Support External DC Biasing when AC-Coupled
As part of the TP134A flexibility, the input can be configured
for ac- or dc-coupled inputs. The 84-mV output level shift
allows for a full sync dynamic range at the output with 0-V
input. The ac-coupled modes include a transparent sync-tip
clamp option for composite video (CVBS), Y', and G'B'R'
signals. AC- coupled biasing for C'/P'B/P'R channels can
easily be achieved by adding an external resistor to VS+.
Very Low Quiescent Current: 31.5 mA(at 3.3V, Typical)
6dB Gain(2V/V), Rail TO Rail Output
AC- or DC-Coupled Output Driving Dual Video Loads
(75Ω)
Wide Power Supply: +3.0V to +5.5V Single Supply
Robust ESD Protection:
The TP134A rail-to-rail output stage with 6-dB gain allows for
both ac and dc line driving. The ability to drive two lines, or
75-Ω loads, allows for maximum flexibility as a video line
driver. The 31.5-mA total quiescent current at 3.3 V makes it
an excellent choice for power-sensitive video applications.
-
Robust 8kV – HBM and 2kV – CDM ESD Rating
Green Product, MSOP-10-EP , TSSOP-14 Package
Applications
TPF134A is available in MSOP-10 package (TPF134A-V)
and TSSOP-14 package (TPF134A-T). Its operation
temperature range is from −40°C to +85°C.
Video Signal Amplification
Set-Top Box Video Driver
PVR、DVD Player Video Buffer
Video Buffer for Portable or USB-Powered Video
Devices
Related Resources
AN-1201: Application notes of TPF1xx
HDTV
Pin configuration(Top View)
Figure 1.
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Function Block
Figure 2.
Order Information
Operating
Marking
Order Number
Temperature
Package
Transport Media, Quantity
Information
Range
MSOP-10-EP
TPF134A-VR
-40 to 85°C
TPF134A
Tape and Reel, 3000
(Exposed-Pad)
TPF134A-V2R
TPF134A-TR
TPF134AU-TR
-40 to 85°C
-40 to 85°C
-40 to 85°C
MSOP-10
TSSOP-14
TSSOP-14
TPF134A
TPF134AT
TPF134AU
Tape and Reel, 3000
Tape and Reel, 3000
Tape and Reel, 3000
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Pin Functions
Pin Number
Pin Name
CVBS IN
Function
SD Video Input, Channel 1
HD Video Input, Channel 2
HD Video Input, Channel 3
HD Video Input, Channel 4
Positive Power Supply
1
3
4
5
2
1
1
3
4
5
7
2
3
HD CH1 IN
HD CH2 IN
HD CH3 IN
+VS
4
10
6,7,8,9 2, 6, 9
NC
No Connection
9
6
5
8,13
10
GND
Ground
11
12
13
14
HD CH3 OUT
HD CH2 OUT
HD CH1 OUT
CVBS OUT
HD Filtered Output, Channel 4
HD Filtered Output, Channel 3
HD Filtered Output, Channel 2
SD Filtered Output, Channel 1
7
11
8
12
10
14
Absolute Maximum Ratings
*
Parameters
Value
Units
Power Supply, VDD to GND
Input Voltage
6.0
V
VIN
IO
VDD + 0.3V to GND - 0.3V
Output Current
65
mA
°C
TJ
Maximum Junction Temperature
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering 10 sec)
150
TA
–45 to 85
–65 to 150
300
°C
°C
°C
TSTG
TL
* 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.
ESD, Electrostatic Discharge Protection
Minimum
Symbol
Parameter
Condition
Unit
Level
HBM
CDM
Human Body Model ESD
MIL-STD-883H Method 3015.8
8
kV
kV
Charged Device Model ESD JEDEC-EIA/JESD22-C101E
2
REV1.1
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Electrical Characteristics 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
Supply Voltage Range
VDD
IDD
3.0
5.5
39.1
50.8
5.1
V
VDD = 3.3V, VIN = 500mV, no load
VDD = 5.0V, VIN = 500mV, no load
VIN=300mV, measure current
VY = -0.2V
31.5
41.0
2.0
-1.7
0
mA
mA
μA
Quiescent current (IQ) (1)
ICLAMP-DOWN
ICLAMP-UP
VCLAMP
RIN
Clamp Discharge Current
Clamp Charge Current
Input Voltage Clamp
Input Impedance
1.5
-1.5
-40
0.5
mA
mV
MΩ
IY = -100μA
+40
0.5V < VY < 1V
3
VIN=0.5V,1V or 2V
RL=150Ω to GND
AV
Voltage Gain
dB
5.9
53
6.01
6.03
124
VOLS
VOL
Output Level Shift Voltage
Output Voltage Low Swing
Output Voltage High Swing
VIN = 0V, no load, input referred
80
0.05
3.18
61
mV
V
VIN = -0.3V, RL =75Ω
VIN = 3V, RL =75Ω to GND (dual
load)
VOH
V
ΔVDD = 3.3V to 3.6V
dB
dB
mA
mA
PSRR
ISC
Power Supply Rejection Ratio
ΔVDD = 5.0V to 5.5V, 50Hz
VIN = 2V, 10Ω, output to GND
VIN =0.1V, output short to VDD
67
65
65
Short-circuit current
AC Electrical Specifications
SD Channel
HD Channel
SD Channel
HD Channel
7.6
31.5
7.8
-1dB
f-1dB
RL=150Ω
RL=150Ω
MHz
MHz
Bandwidth
9
-3dB
Bandwidth
f-3dB
36
dG
dP
Differential Gain
Differential Phase
Video input range 1V
Video input range 1V
-0.1
-1.1
0.03
0.4
0.7
0.1
0.02
5.4
5.0
-72
69
0.8
1.1
0.2
%
°
Total
Harmonic
Distortion
SD Channel
HD Channel
SD Channel
HD Channel
THD
f=1MHz, VOUT=1.4VPP
%
f = 100kHz to 5MHz
f = 100kHz t0 27MHz
f = 1MHz, VOUT=1.4VPP
f= 100kHz to 4.43MHz
f= 100kHz to 30MHz
f = 4.2MHz
Group Delay
Variation
D/DT
XTALK
SNR
ns
dB
dB
Channel Crosstalk
-66
65
SD Channel
HD Channel
Signal-to-Noise
Ration
66
71
ROUT_AC
CLG
Output Impedance
1.5
0.18
5
Ω
dB
ns
Chroma-Luma-Gain (SD Channel)
400kHz to 3.58MHz and 4.43MHz
0.4
CLD
Chroma-Luma-Delay (SD Channel) 400kHz to 3.58MHz and 4.43MHz
Note: (1). 100% tested at TA=25°C.
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Typical Application
STB / DVB / DVD-Player
+3.3 V
+
4.7μF
0.1μF
75Ω Video Cable
75Ω Video Cable
75Ω Video Cable
75Ω
75Ω
75Ω
75Ω
220μF
220μF
220μF
220μF
OUT1
CVBS
R / Pr
G / Y
IN1
Clamp
Bias
CVBS
R / Pr
RSOURCE
RSOURCE
RSOURCE
Video
SoC
TPF134A
Clamp
G / Y
75Ω Video Cable
B / Pb
B / Pb
Bias
RSOURCE
+Vs
GND
AC-coupling
Output
DAC Load Resistor
RSOURCE = DAC Load Resistor // SoC Output Resistor
Figure3. Reference Application Design
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
period, the voltage droops because of a small
Application Information
constant 2.0μA sinking current. If the AC-coupling
capacitance is 0.1μF, the maximum droop voltage is
about 1mV which is restored by the clamp circuit. The
maximum pull-up current of the clamp circuit is 1.7mA.
For a 4μs sync tip width and 0.1μF capacitor, the
maximum restoration voltage is about 80mV.
The TPF134A is targeted for systems that require a
single standard-definition (CVBS) video output for CVBS
video support along with three high-definition (HD) video
outputs. Although it can be used for numerous other
applications, the needs and requirements of the video
signal are the most important design parameters of the
TPF134A. The TPF134A incorporates many features not
typically found in integrated video parts while consuming
very low power.
The line droop voltage will increase if a smaller
AC-coupling capacitance is used. For the same
reason, if larger capacitance is used the line droop
voltage will decrease. Table 1 is droop voltage and
maximum restoration voltage of the clamp for typical
capacitance.
Internal Sync Clamp
The typical embedded video DAC operates from a
ground referenced single supply. This becomes an
issue because the lower level of the sync pulse output
may be at a 0V reference level to some positive level.
The problem is presenting a 0V input to most single
supply driven amplifiers will saturate the output stage
of the amplifier resulting in a clipped sync tip and
degrading the video image. A larger positive reference
may offset the input above its positive range.
Table 1. Maximum restoration voltage and droop voltage
of Y and CVBS signals for different capacitance
CAP VALUE
(nF)
DROOP IN 60μs
CHARGE IN 4μs
(mV)
1.2
(mV)
68
100
1,000
0.12
6.8
Low Pass Filter--Sallen Key
The Sallen Key is a classic low pass configuration.
This provides a very stable low pass function, and in
the case of the TPF134A, two six-pole roll-off at
around 9MHz and 36MHz. The six-pole function is
accomplished with an RC low pass network placed in
series with and before the Sallen Key.
The TPF134A features an internal sync clamp and
offset function to level shift the entire video signal to
the best level before it reaches the input of the
amplifier stage. These features are also helpful to
avoid saturation of the output stage of the amplifier by
setting the signal closer to the best voltage range.
Output Couple
TPF134A output could support both “AC Couple” and
“DC Couple”, if use “AC Couple”, this capacitor is
typically between 220-μF and 1000-μF, although
470-μF is common. This value of this capacitor must
be this large to minimize the line tilt (droop) and/or
field tilt associated with ac-coupling as described
previously in this document.
The simplified block diagram of the TPF134A in
Figure-2.The AC coupled video sync signal is pulled
negative by a current source at the input of the
comparator amplifier. When the sync tip goes below
the comparator threshold the output comparator is
driven negative, The PMOS device turns on clamping
sync tip to near ground level. The network triggers on
the sync tip of video signal.
The TPF134A internal sync clamp makes it possible to
DC couple the output to a video load, eliminating the
need for any AC coupling capacitors, thereby saving
board space and additional expense for capacitors.
This makes the TPF134A extremely attractive for
portable video applications. Additionally, this solution
completely eliminates the issue of field tilt in the lower
frequency. The trade off is greater demand of supply
Droop Voltage and DC
Restoration
Selection of the input AC-coupling capacitance is
based on the system requirements. A typical sync tip
width of a 64μs NTSC line is 4μs during which clamp
circuit restores its DC level. In the remaining 60μs
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
current. Typical load current for AC coupled is around
due to the load, or: for sourcing:
VOUT
1mA, compared to typical 6.6mA used when DC
coupling.
PDMAX =Vs ISMAX +（Vs VOUT）
RL
Where：
VS = Supply voltage
Output Drive Capability and
Power Dissipation
ISMAX = Maximum quiescent supply current
VOUT = Maximum output voltage of the application
RLOAD = Load resistance tied to ground
With the high output drive capability of the TPF134A, it
is possible to exceed the +125°C absolute maximum
junction temperature under certain load current
conditions. Therefore, it is important to calculate the
maximum junction temperature for an application to
determine if load conditions or package types need to
be modified to assure operation of the amplifier in a
safe operating area. The maximum power dissipation
allowed in a package is determined according to
Equation:
By setting the two PDMAX equations equal to each
other, we can solve the output current and RLOAD to
avoid the device overheat.
Power Supply Bypassing Printed
Circuit Board Layout
As with any modern operational amplifier, a good
printed circuit board layout is necessary for optimum
performance. Lead lengths should be as short as
possible. The power supply pin must be well bypassed
to reduce the risk of oscillation. For normal single
supply operation, a single 4.7μF tantalum capacitor in
parallel with a 0.1μF ceramic capacitor from VS+ to
GND will suffice.
TJMAX TAMAX
PDMAX
=
JA
Where：
TJMAX = Maximum junction temperature
TAMAX = Maximum ambient temperature
ΘJA = Thermal resistance of the package
The maximum power dissipation actually produced by
an IC is the total quiescent supply current times the
total power supply voltage, plus the power in the IC
VIDEO FILTER DRIVER SELECTION GUIDE
P/N
Product Description
Channel
-3dB Bandwidth
Package
SC70-5
Low power, enable function and
SAG correction, 1 channel 6th order
9MHz
TPF110
/TPF110L
1-SD
9MHz
SOT23-6
Low power 3 channel, 6th-order
9MHz SD video filter
TPF113
TPF114
TPF116
3-SD
4-SD
6-SD
9MHz
9MHz
9MHz
SO-8
Low power 4 channel, 6th-order
9MHz SD video filter
MSOP-10
TSSOP-14
TSSOP-14
Low power 4 channel, 6th-order
9MHz SD video filter for CVBS,
SVIDEO
3 channel 6th-order 13.5MHz,
960H/720H-CVBS video filter or
Y’Pb’Pr 480P/576P video filter
Low power 3 channel, 6th-order
36MHz HD video filter
TPF123
3-ED
3-HD
13.5MHz
36MHz
SO-8
SO-8
TPF133
TPF134
Low power 3 channel, 6th-order
36MHz HD video filter and 1 channel
1-SD&
3-SD
9MHz
MSOP-10
36MHz
TSSOP-14
REV1.1
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©2011 3PEAK INCORPORATED
TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
SD video filter
Low power 3 channel, 6th-order
36MHz HD video filter and 3 channel
SD video filter
TPF136
3-SD&
3-HD
9MHz
TSSOP-20
SO-8
36MHz
Low power 3 channel, 6th-order
72MHz Full HD video filter
Low power 3 channel, 6th-order
72MHz Full HD video filter and 1
channel SD video filter
TPF143
TPF144
3-FHD
72MHz
1-SD&
3-FHD
9MHz
MSOP-10
72MHz
TSSOP-14
Low power 3 channel, 6th-order
72MHz Full HD video filter and3
channel SD video filter
TPF146
TPF153
3-SD&
3-FHD
9MHz
TSSOP-20
72MHz
Low power 3 channel, 6th-order
220MHz Full HD video filter
SO-8
3-CH
220MHz
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Package Outline Dimensions
10 Lead MSOP Package——Main Body 3.00 mm [MSOP_N]
Units
Inches
Millimeters
MIN
TYP
MAX
MIN
TYP
10
MAX
Dimensions
n
e
10
.020
0.50
1.00
A
.031
.047
0.80
1.20
A2
A1
E1
E
.030
.000
.185
.114
.114
.016
.038
.008
.201
.122
.122
.026
0.76
0.00
4.70
2.90
2.90
0.41
0.97
0.20
5.10
3.10
3.10
0.65
3.00
3.00
D
L
Φ
C
0°
6°
0°
6°
.006
.012
0.152
0.30
b
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
Package Outline Dimensions
14 Lead TSSOP Package——Main Body 4.40 mm [TSSOP_N]
Units
Inches
Millimeters
MIN
TYP
MAX
MIN
TYP
14
MAX
Dimensions
n
e
14
.026
.043
0.65
1.10
A
A2
A1
E1
E
.031
.039
0.80
1.00
.002
.246
.169
.193
.002
.006
.258
.177
.201
.028
0.05
6.25
4.30
4.90
0.50
0.15
6.55
4.50
5.10
0.70
4.40
5.00
D
L
Φ
c
1
°
7
°
1
°
7°
.004
.007
.006
.008
.012
0.09
0.19
0.20
0.30
b
REV 1.1
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©2011 3PEAK INCORPORATED
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TPF134A
4-Channel Video Amplifier with 1-SD and 3-HD 6th-order Filters
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Contact information:
USA: 635 W. Alma School Road, Suite102
Chandler, USA.
AZ 85234
Shanghai-China: Room 401-407 No.1278 Keyuan Road,
Zhangjiang High-tech Park, Pudong New District,
Shanghai, China
Zip Code: 201203
Suzhou-China: Suite 304, Building B2, Creative Industrial Park,
No.328 Xinghu Street, Industrial Park,
Suzhou, Jiangsu Province, China
Zip Code: 215123
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