MAX11505CUB+T [MAXIM]
Consumer Circuit, BICMOS, PDSO10, MO-187CBA, UMAX-10;
| 型号： | MAX11505CUB+T |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Consumer Circuit, BICMOS, PDSO10, MO-187CBA, UMAX-10 信息通信管理 光电二极管 商用集成电路 |
| 文件： | 总12页 (文件大小：238K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1057; Rev 0; 11/07
Four-Channel, Standard-Definition
Video Filters
4/MAX105
General Description
Features
♦ Four-Channel 5th Order Filter for Standard-
The MAX11504/MAX11505 integrated filters offer four
channels of 5th order filters for standard-definition video
and include +6dB output buffers on each channel. These
video filters are ideal for anti-aliasing and DAC smooth-
ing in applications such as set-top boxes, security sys-
tems, digital video recorders (DVRs), DVD players, and
personal video recorders.
Definition Video
♦ +6dB Output Buffers
♦ Transparent Input Clamp
♦ AC- or DC-Coupled Inputs
♦ AC- or DC-Coupled Outputs
The MAX11504/MAX11505 video inputs feature a trans-
parent clamp compatible with AC- and DC-coupled
input signals and allow DAC outputs to be directly cou-
pled. The 5th order filters provide a bandwidth of
8.6MHz (typical). The MAX11504 offers a flat passband
response on all channels. The MAX11505 offers a 0.8dB
peaking passband response on Channel 1, resulting in
a bandwidth of 8.9MHz (typical) and a flat passband
response on all other channels.
♦ Output Buffers Can Drive Two Standard 150Ω
Video Loads
♦ 12kV HBM ESD Protection on Outputs
♦ Flat Passband Response (MAX11504)
♦ 0.8dB Peaking Passband Response on Channel 1
(MAX11505)
♦ Single +5V Power Supply
♦ Small 10-Pin µMAX Package
Each channel includes an output buffer with a gain of
Ordering Information
+6dB capable of driving a full 2V
video signal into two
P-P
standard 150Ω (75Ω back terminated) video loads. The
buffers drive either AC- or DC-coupled loads and assure
a blanking level below 1V after the back-match resistor.
PIN-
PACKAGE
PACKAGE FREQUENCY
PART
CODE
RESPONSE
MAX11504CUB+ 10 µMAX
U10+2
Flat
The MAX11504/MAX11505 operate from a single +5V
supply and are available in the 0°C to +70°C commer-
cial temperature range. These devices are available in
HF Boost On
Channel 1
MAX11505CUB+ 10 µMAX
U10+2
®
small 10-pin µMAX packages.
Note: All devices are specified over the 0°C to +70°C commer-
cial temperature range.
Applications
Set-Top Box Receivers
Digital Video Recorders (DVRs)
Security Video Systems
SDTV
Simplified Block Diagram
V
CC
DVD Players
Personal Video Recorders
Video On-Demand
MAX11504
MAX11505
TRANSPARENT
CLAMP
8.6MHz
8.9MHz*
+6dB
+6dB
+6dB
+6dB
OUT1
IN1
IN2
IN3
IN4
µMAX is a registered trademark of Maxim Integrated Products, Inc.
TRANSPARENT
CLAMP
Pin Configuration
OUT2
OUT3
8.6MHz
8.6MHz
TOP VIEW
TRANSPARENT
CLAMP
IN1
IN2
IN3
IN4
1
2
3
4
5
10 OUT1
9
8
7
6
OUT2
OUT3
OUT4
GND
TRANSPARENT
CLAMP
OUT4
8.6MHz
GND
MAX11504
MAX11505
V
CC
*MAX11505 WITH 0.8dB PEAKING ON CHANNEL 1
µMAX
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Four-Channel, Standard-Definition
Video Filters
ABSOLUTE MAXIMUM RATINGS
CC
V
to GND ..............................................................-0.3V to +6V
Operating Temperature Range
All other pins to GND..-0.3V to the lower of (V + 0.3V) and +6V
MAX1150_CUB...................................................0°C to +70°C
Storage Temperature Range.............................-65°C to +150°C
Junction Temperature......................................................+150°C
Lead temperature (soldering, 10s) ..................................+300°C
CC
Continuous Power Dissipation (T = +70°C)
A
10-Pin µMAX (derate 8.8mW/°C above +70°C)........707.3mW
Maximum Current into Any Pin except V and GND...... 50mA
CC
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
= +5V, R
= 150Ω to GND, C = 0.1µF, T = 0°C to +70°C. All frequency response is relative to 100kHz.)
CC
LOAD
IN
A
PARAMETER
SYMBOL
CONDITIONS
MIN
4.5
TYP
7.2
7.8
8.6
8.9
50
MAX
UNIT
MAX11504
-1dB Bandwidth
-3dB Bandwidth
f
f
MHz
1dB
3dB
MAX11505, Channel 1
MAX11504
5.0
MHz
MAX11505, Channel 1
f = 27MHz
Stopband Attenuation
Low-Frequency Gain
Low-Frequency Gain Matching
Input Voltage Range
Differential Gain
A
dB
dB
dB
V
4/MAX105
SB
A
5.5
6.0
0.02
1.4
0.1
0.3
0.1
-70
80
6.5
V
A
V(MATCH)
V
Referenced to GND if DC-coupled
All channels
IN
dG
dφ
%
Differential Phase
All channels
degrees
%
Total Harmonic Distortion
Channel-to-Channel Crosstalk
Signal-to-Noise Ratio
Propagation Delay
THD
V
= 1.8V , f = 1MHz (All channels)
OUT P-P
X
f = 1MHz
dB
dB
ns
TALK
SNR
NTC-7 weighting, 100kHz, 4.2MHz
f = 4.5MHz
t
pd
76
Power-Supply Rejection Ratio
Supply-Voltage Range
Supply Current
PSRR
DC (all channels)
70
dB
V
V
4.75
5
5.25
35
CC
CC
I
No load
24
mA
2
_______________________________________________________________________________________
Four-Channel, Standard-Definition
Video Filters
4/MAX105
Typical Operating Characteristics
(V
= 5V, R = 150Ω to GND, T = +25°C)
L A
CC
MAX11504 GROUP DELAY
MAX11504 FREQUENCY RESPONSE
MAX11504 PASSBAND RESPONSE
vs. FREQUENCY
10
5
10
120
100
80
0
-10
-20
-30
-40
-50
0
60
40
20
0
-5
-60
-70
-10
0.1
1
10
0.1
1
10
100
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
MAX11504 DIFFERENTIAL GAIN, NTSC
MAX11504 DIFFERENTIAL PHASE, NTSC
MAX11504 2T RESPONSE
MAX11504toc06
0.2
0.4
0.3
0.1
0
0.2
0.1
IN
0
-0.1
-0.2
-0.3
-0.4
OUT
-0.1
-0.2
200ns/div
1
2
3
4
5
6
7
1
2
3
4
5
6
7
STEP
STEP
MAX11504 MULTIBURST RESPONSE
MAX11504 12.5T RESPONSE
MAX11504toc08
MAX11504toc07
IN
IN
OUT
OUT
400ns/div
10µs/div
_______________________________________________________________________________________
3
Four-Channel, Standard-Definition
Video Filters
Typical Operating Characteristics (continued)
(V
= 5V, R = 150Ω to GND, T = +25°C)
L A
CC
MAX11505 GROUP DELAY
MAX11505 PASSBAND RESPONSE
MAX11505 FREQUENCY RESPONSE
vs. FREQUENCY
10
10
120
100
0
5
0
-10
-20
-30
-40
-50
-60
-70
80
60
40
-5
20
0
-10
0.1
1
10
0.1
1
10
100
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
4/MAX105
MAX11505 2T RESPONSE
MAX11505 DIFFERENTIAL GAIN, NTSC
MAX11505 DIFFERENTIAL PHASE, NTSC
MAX11504toc14
0.2
0.4
0.2
0.2
IN
0.1
0
0.1
0
-0.1
-0.2
-0.3
-0.4
OUT
-0.1
-0.2
200ns/div
1
2
3
4
5
6
7
1
2
3
4
5
6
7
STEP
STEP
MAX11505 MULTIBURST RESPONSE
MAX11505 12.5T RESPONSE
MAX11504toc16
MAX11504toc15
IN
IN
OUT
OUT
400ns/div
10µs/div
4
_______________________________________________________________________________________
Four-Channel, Standard-Definition
Video Filters
4/MAX105
Pin Description
PIN
1
NAME
IN1
FUNCTION
Video Input Channel 1. The MAX11505 provides 0.8dB passband boost at high frequency.
2
IN2
Video Input Channel 2
3
IN3
Video Input Channel 3
4
IN4
Video Input Channel 4
5
V
Power Supply. Bypass to ground with 0.1µF and 1µF capacitors.
CC
6
GND
OUT4
OUT3
OUT2
OUT1
Ground
7
Video Output Channel 4
8
Video Output Channel 3
9
Video Output Channel 2
10
Video Output Channel 1. The MAX11505 provides 0.8dB passband boost at high frequency.
Channel 1 to help with system rolloff (for CVBS signals)
and a flat passband response on all other channels.
Detailed Description
Each channel of the MAX11504/MAX11505 contains a
transparent input clamp, a 5th order lowpass filter, and
an output amplifier with +6dB gain (see the Functional
Diagrams and Typical Operating Circuits). The 5th order
lowpass filters provide a bandwidth of 8.6MHz (typical).
The MAX11504 provides a flat passband response. The
MAX11505 features a 0.8dB high-frequency boost on
Within the passband, each channel amplifies the signal
by two and adds 280mV of offset.
V
= (2 × V )+ 0.28V
IN
OUT
Typical voltage levels are shown in Figures 1 and 2.
2.28V
OUTPUT SIGNAL
MAX11504
MAX11505
IN_
OUT_
1.00V
0.88V
0.28V
INPUT SIGNAL
0.30V
0V
Figure 1. Typical AC-Coupled Signal
_______________________________________________________________________________________
5
Four-Channel, Standard-Definition
Video Filters
2.32V
OUTPUT SIGNAL
MAX11504
MAX11505
IN_
OUT_
1.02V
0.32V
0.92V
0.32V
INPUT SIGNAL
4/MAX105
0.02V
0V
Figure 2. Typical DC-Coupled Signal
AC-Coupled Inputs
Transparent Clamps
All inputs feature transparent clamps that allow either
AC or DC input coupling. The clamp remains inactive
while the input signal is above ground, offering true DC
input coupling. If the signal goes below ground, as
occurs when it is AC-coupled, the clamp sets the sync
tip slightly below the ground level.
If the input is AC-coupled, the transparent clamps are
active and set the lowest point of the signal at ground.
This is appropriate for unipolar signals such as Y, R, G,
or B with or without sync pulse (Figure 3).
Input Coupling
The choice of AC- or DC-coupling the input depends
on the video source. Many DACs provide a current
output and are terminated to ground with a resistor;
such signals are conveniently DC-coupled. Use AC-
coupling when the DC level of the video signal is
unknown or outside the specified input range of the
MAX11504
MAX11505
ENCODER
0.1µF
IN_
DAC
MAX11504/MAX11505, such as SCART or V -termi-
CC
nated DAC outputs.
DC-Coupled Inputs
If the input is DC-coupled, the input voltage must
remain above zero but not exceed the maximum input
voltage of 1.4V (typical).
Figure 3. Simple AC-Coupling for Unipolar Signals (Y, R, G, B)
6
_______________________________________________________________________________________
Four-Channel, Standard-Definition
Video Filters
4/MAX105
For bipolar signals such as C, Pb, and Pr, bias the AC-
resistor, an optional 220µF or larger coupling
capacitor, and a 75Ω termination resistor. The
MAX11504/MAX11505 clamp the signal, forcing the
blanking level to less than 1V at the termination resis-
tor. This allows driving video loads to meet digital TV
specifications without the need for costly AC-coupling
capacitors. When driving two parallel loads per output
(Figure 5b), thermal considerations must be taken into
account, especially for DC-coupled outputs (see the
Junction Temperature Calculations section.)
coupled inputs to a fixed DC voltage, typically 0.59V, to
ensure that the transparent clamp remains off. A suit-
able network is shown in Figure 4. Determine the bias
voltage using:
R2
R1+R2
V =
(V − I ×R1)
CC L
B
where I = the input leakage current (typically 0.5µA).
L
V
CC
MAX11504
MAX11505
MAX11504
MAX11505
R1
820kΩ
ENCODER
DAC
0.1µF
OUT_
IN_
75Ω
220µF
(OPTIONAL)
75Ω
R2
120kΩ
(a)
Figure 4. AC-Coupling for Bipolar Signals (C, Pb, Pr)
Standard-Definition Filters
75Ω
220µF
(OPTIONAL)
MAX11504
MAX11505
The MAX11504/MAX11505 filters are optimized to deliv-
er a flat passband along with high stopband attenua-
tion. The filter characteristic has been chosen to provide
an excellent time domain response with low overshoot.
The typical -3dB frequency of 8.6MHz guarantees mini-
mal attenuation in the passband while at the same time
offering a 27MHz attenuation of typically -50dB.
Channel 1 of the MAX11505 has 0.8dB of high-frequency
boost and a -3dB frequency of 8.9MHz.
75Ω
75Ω
OUT_
75Ω
220µF
(OPTIONAL)
Output Buffer
The MAX11504/MAX11505 feature output buffers with
+6dB gain that drive two standard 150Ω video loads.
A typical load (Figure 5a) is a 75Ω back-match
(b)
Figure 5. Typical Output Loads
_______________________________________________________________________________________
7
Four-Channel, Standard-Definition
Video Filters
A sync tip exists at 280mV and peak white exists at
Applications Information
2.28V. The RMS voltage will be approximately 1.88V on
each output (80% of the peak-peak voltage, plus the
offset) giving:
Output Configuration
The MAX11504/MAX11505 outputs may be either DC-
or AC-coupled. If AC-coupled, choose a capacitor that
passes the lowest frequency content of the video signal,
and keep the line-time distortion within desired limits. The
capacitor value is a function of the input leakage and
impedance of the circuit being driven. Common industry
practice is to use a 220µF or larger coupling capacitor. If
any or all outputs are driving two parallel loads, see the
Junction Temperature Calculations section.
P
= 5 × 0.024 = 0.12W
DS
(5 −1.88)×1.88
P
=
= 0.078W
DOn
75
and
The MAX11504/MAX11505 outputs are fully protected
against short circuits either to the ground or the positive
supply of the device. The short-circuit protection cir-
cuitry limits the output current to 80mA (typical) per out-
put. Shorting more than one output simultaneously can
exceed the maximum package power dissipation.
P = 0.12 + 0.078 + 0.078 + 0.078 + 0.078 = 0.432W
D
The junction temperature is given by:
T = T + (R
× P )
D
J
A
θJA
Junction Temperature Calculations
Die temperature is a function of quiescent power dissi-
pation and the power dissipation in the output drivers.
where T = junction temperature, T = ambient temper-
J
A
4/MAX105
ature (assume +70°C) and R
junction to ambient.
= thermal resistance
θJA
Calculate the power dissipated P using:
D
From the Absolute Maximum Ratings section of the
data sheet, the derating factor is 8.8mW/°C above
P
= P +P
+P
+P
+P
D
DS
DO1
DO2
DO3 DO4
+70°C. R
113°C/W.
= 1/(derating factor) = 1/(8.8mW/°C) =
θJA
where P is the quiescent power dissipated in the die,
DS
and given by:
Therefore:
P
= V × I
CC CC
DS
T = 70 +113 × 0.432 = +119°C
J
and where P
is the power dissipated in the nth dri-
DOn
If there is only one video load on each output, the junc-
tion temperature lowers to:
ver stage and given by:
(V − V
)× V
ORMSn
CC
ORMSn
T = +101°C
P
=
J
DOn
R
L
The above calculations assume the use of a multilay-
ered board with extensive ground planes for high ther-
mal efficiency. Using such a board is especially
important in applications where there are two video
loads on each channel.
where V
is the RMS output voltage and R is the
L
ORMSn
load resistance.
Example - Assuming these conditions:
1) Video standard = 525/60/2:1.
2) Video format = RGB with syncs on all channels.
3) Picture content = 100% white.
4) The input signal is AC-coupled.
5) The output signal is DC-coupled.
6) V
= 5.0V.
CC
7) I
= 24mA.
CC
8
_______________________________________________________________________________________
Four-Channel, Standard-Definition
Video Filters
4/MAX105
PCB Layout Recommendations
To help with heat dissipation, connect the power and
ground traces to large copper areas. Bypass V to
CC
GND with a 0.1µF capacitor and 1.0µF capacitors.
Surface-mount capacitors are recommended for their
low inductance. Place traces carrying video signals
appropriately to avoid mutual coupling. If inputs are
AC-coupled, place the capacitors as close as possible
to the device and keep the traces short to minimize
parasitic capacitance and inductance.
_______________________________________________________________________________________
9
Four-Channel, Standard-Definition
Video Filters
Functional Diagrams and Typical Operating Circuits
+5V
RECONSTRUCTION FILTER APPLICATION
0.1µF
1µF
V
CC
4
MAX11504
MAX11505
ENCODER
0.1µF*
DAC
220µF*
75Ω
OUT1
8
IN1
IN2
IN3
IN4
1
2
3
4
8.6MHz
8.9MHz
+6dB
CLAMP
CLAMP
CLAMP
CLAMP
✝
75Ω
75Ω
0.1µF*
220µF*
220µF*
75Ω
75Ω
7 OUT2
+6dB
+6dB
+6dB
DAC
8.6MHz
8.6MHz
4/MAX105
75Ω
75Ω
75Ω
0.1µF*
OUT3
OUT4
6
6
DAC
75Ω
0.1µF*
220µF*
75Ω
DAC
8.6MHz
5
75Ω
75Ω
GND
*OPTIONAL
✝MAX11505 WITH 0.8dB PEAKING ON CHANNEL 1
10 ______________________________________________________________________________________
Four-Channel, Standard-Definition
Video Filters
4/MAX105
Functional Diagrams and Typical Operating Circuits (continued)
+5V
ANTI-ALIASING FILTER APPLICATION
0.1µF
1µF
V
CC
4
MULTICHANNEL
DECODER
MAX11504
MAX11505
0.1µF*
75Ω
OUT1
8
IN1
IN2
IN3
IN4
1
2
3
3
8.6MHz
8.9MHz
+6dB
ADC
CLAMP
CLAMP
CLAMP
CLAMP
✝
75Ω
75Ω
0.1µF*
75Ω
75Ω
7 OUT2
+6dB
+6dB
+6dB
8.6MHz
8.6MHz
ADC
ADC
75Ω
75Ω
75Ω
0.1µF*
OUT3
OUT4
6
6
75Ω
0.1µF*
75Ω
8.6MHz
5
ADC
75Ω
75Ω
GND
*OPTIONAL
✝MAX11505 WITH 0.8dB PEAKING ON CHANNEL 1
Chip Information
PROCESS: BiCMOS
______________________________________________________________________________________ 11
Four-Channel, Standard-Definition
Video Filters
Package Information
(The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information
go to www.maxim-ic.com/packages.)
e
4X S
10
10
INCHES
MAX
MILLIMETERS
MAX
1.10
0.15
0.95
3.05
3.00
3.05
3.00
5.05
0.70
DIM MIN
MIN
-
A
-
0.043
0.006
0.037
0.120
0.118
0.120
0.118
0.199
A1
A2
D1
D2
E1
E2
H
0.002
0.030
0.116
0.114
0.116
0.114
0.187
0.05
0.75
2.95
2.89
2.95
2.89
4.75
0.40
H
Ø0.50 0.1
0.6 0.1
L
0.0157 0.0275
0.037 REF
L1
b
0.940 REF
0.007
0.0106
0.177
0.270
0.200
1
1
e
0.0197 BSC
0.500 BSC
0.6 0.1
c
0.0035 0.0078
0.0196 REF
0.090
BOTTOM VIEW
0.498 REF
S
α
TOP VIEW
4/MAX105
0°
6°
0°
6°
D2
E2
GAGE PLANE
A2
c
A
E1
b
L
α
A1
D1
L1
FRONT VIEW
SIDE VIEW
PROPRIETARY INFORMATION
TITLE:
PACKAGE OUTLINE, 10L uMAX/uSOP
APPROVAL
DOCUMENT CONTROL NO.
REV.
1
21-0061
1
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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