MAX11506CEE+ [MAXIM]
Consumer Circuit, BICMOS, PDSO16, LEAD FREE, QSOP-16;
| 型号： | MAX11506CEE+ |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Consumer Circuit, BICMOS, PDSO16, LEAD FREE, QSOP-16 信息通信管理 光电二极管 商用集成电路 |
| 文件： | 总10页 (文件大小：156K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-4122; Rev 0; 4/08
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
6/MAX1507
General Description
Features
♦ Three Selectable 6th-Order 9MHz/33MHz
The MAX11506/MAX11507 integrated filters offer six
channels, three for standard-definition (SD) video and
three for either SD or high-definition (HD) 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, digital video
recorders, DVD players, and personal video recorders.
(SD/HD) Filters
♦ Three Fixed 5th-Order 9MHz (SD) Filters
♦ +6dB Output Buffers
♦ Transparent Input Clamp
♦ AC- or DC-Coupled Inputs
♦ AC- or DC-Coupled Outputs
The MAX11506/MAX11507 video inputs feature a trans-
parent clamp compatible with AC- and DC-coupled input
signals and allow DAC outputs to be directly coupled. The
filters provide -3dB bandwidth of 9.0MHz for the SD filters
and 33MHz for the HD filters. Each channel includes an
output buffer with a gain of +6dB capable of driving a full
♦ 0.8dB Peaking Passband Response
(MAX11507) on Three SD-Only Channels
♦ Output Buffers Drive a Standard 150Ω Video
Load
♦ Single +5V Power Supply
♦ Lead-Free 16-Pin QSOP Package
2V
video signal into a 150Ω video load. The buffers
P-P
drive either AC- or DC-coupled loads and assure a blank-
ing level of below 1V after the backmatch resistor. DC-
coupling eliminates bulky coupling capacitors.
Ordering Information
PIN-
FREQUENCY
PACKAGE RESPONSE
The MAX11506 offers a flat passband while the
MAX11507 features 0.8dB peaking on the three SD-only
channels to compensate for system roll-off. The
MAX11506/MAX11507 operate from a single +5V supply
and are available in the 0°C to +70°C commercial tem-
perature grade. The MAX11506/MAX11507 are offered in
the 16-pin QSOP package.
PART
TEMP RANGE
MAX11506CEE+ 0°C to +70°C 16 QSOP
Flat
High
Frequency
Boost
MAX11507CEE+ 0°C to +70°C 16 QSOP
+Denotes a lead-free package.
Applications
Cable and Satellite Set-Top Box Receivers
HDTVs
Typical Operating Circuit appears at end of data sheet.
Block Diagram
DVD Players
Personal Video Recorders
Digital Video Recorders (DVRs)
SDTVs
Video On-Demand
HD Recorders
SDIN1
SDIN2
SDIN3
SDOUT1
SDOUT2
SDOUT3
TRANSPARENT
CLAMP
6dB
6dB
6dB
TRANSPARENT
CLAMP
TRANSPARENT
CLAMP
Pin Configuration
9MHz, 5TH ORDER
TOP VIEW
MAX11506
MAX11507
+
SDIN1
1
2
3
4
5
6
7
8
16 SDOUT1
15 SDOUT2
14 SDOUT3
13 GND
SD/HDIN1
SD/HDIN2
SD/HDOUT1
SD/HDOUT2
SD/HDOUT3
SDIN2
SDIN3
TRANSPARENT
CLAMP
6dB
6dB
6dB
V
MAX11506
MAX11507
CC
TRANSPARENT
CLAMP
FSEL
SD/HDIN1
SD/HDIN2
SD/HDIN3
12 GND
11 SD/HDOUT1
10 SD/HDOUT2
SD/HDIN3
FSEL
TRANSPARENT
CLAMP
9MHz/33MHz, 6TH ORDER
9
SD/HDOUT3
QSOP
________________________________________________________________ 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.
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
ABSOLUTE MAXIMUM RATINGS
CC
V
to GND............................................................. -0.3V to +6V
Maximum Current into Any Pin except V
and GND ..... 50mA
CC
All Other Pins
to GND ................-0.3V to the lower of (V
Continuous Power Dissipation (T = +70°C)
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Junction Temperature......................................................+150°C
+ 0.3V) and +6V
CC
A
16-Pin QSOP (derate 9.6mW/°C above +70°C)....... 771.5mW
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.
DC ELECTRICAL CHARACTERISTICS
(V
= +5V, R
= 150Ω to GND, C = 0.1µF, T = 0°C to +70°C, unless otherwise noted.)
CC
LOAD
IN
A
PARAMETER
SYMBOL
CONDITIONS
MIN
4.75
2.0
TYP
40
MAX
61
UNITS
Supply Current
I
mA
V
CC
Supply Voltage Range
Input-Voltage Range
Digital Input High Voltage
Digital Input Low Voltage
V
5.00
1.4
5.25
CC
V
V
IN
IH
6/MAX1507
V
V
V
0.8
V
IL
AC ELECTRICAL CHARACTERISTICS
(V
= +5V, R
= 150Ω to GND, C = 0.1µF, T = 0°C to +70°C, frequency response relative to 100kHz, unless otherwise
CC
LOAD
IN
A
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
STANDARD-DEFINITION VIDEO
MAX11506, SD
4.5
4.5
5.0
4.5
7.9
7.9
8.6
7.9
9.0
48
MAX11506, SD/HD in SD mode
MAX11507, SD
-1dB Bandwidth
f
f
MHz
1dB
3dB
MAX11507, SD/HD in SD mode
-3dB Bandwidth
MHz
dB
Stopband Attenuation
Low-Frequency Gain
Differential Gain
A
f = 27MHz
No load
SB
A
5.8
6.0
0.5
0.2
0.1
-60
71
6.2
dB
V
dG
dφ
All channels
All channels
%
Differential Phase
Degrees
%
Total Harmonic Distortion
Channel-to-Channel Crosstalk
Signal-to-Noise Ratio
Propagation Delay
THD
V
= 1.4V , f = 1MHz (all channels)
OUT P-P
X
f = 1MHz
dB
TALK
SNR
Peak signal (2V ) to RMS noise, 100kHz, 4.2MHz
P-P
dB
t
f = 4.5MHz
59
ns
PD
Power-Supply Rejection Ratio
PSRR
DC (all channels)
45
dB
2
_______________________________________________________________________________________
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
6/MAX1507
AC ELECTRICAL CHARACTERISTICS (continued)
(V
= +5V, R
= 150Ω to GND, C = 0.1µF, T = 0°C to +70°C, frequency response relative to 100kHz, unless otherwise
CC
LOAD
IN
A
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
HIGH-DEFINITION VIDEO
-1dB Bandwidth
f
f
T
A
= +25°C
23
30
33
MHz
MHz
1dB
3dB
-3dB Bandwidth
f = 37.125MHz
f = 44.250MHz
4.0
13
Stopband Attenuation
Low-Frequency Gain
Total Harmonic Distortion
A
dB
dB
%
SB
f = 74.250MHz, T = +25°C
32.0
5.8
46.0
6.0
0.4
0.4
0.6
-60
65
A
A
6.2
V
V
V
V
= 1.4V , f = 10MHz
P-P
OUT
OUT
OUT
THD
= 1.4V , f = 15MHz
P-P
= 1.4V , f = 22MHz
P-P
Channel-to-Channel Crosstalk
Signal-to-Noise Ratio
X
f = 1MHz
dB
dB
ns
TALK
SNR
Peak signal (2V ) to RMS noise, 100kHz, 30MHz
P-P
Group-Delay Deviation
∆t
f = 100kHz to 26MHz
15
g
Typical Operating Characteristics
(V
= 5V, R = 150Ω to GND, output DC-coupled, T = +25°C.)
CC
L
A
MAX11506 FREQUENCY RESPONSE
SD CHANNEL
MAX11506 PASSBAND RESPONSE
SD CHANNEL
MAX11507 FREQUENCY RESPONSE
SD CHANNEL
10
4
2
10
0
0
-10
-20
-30
-40
-50
-60
-70
-10
-20
-30
-40
-50
-60
-70
0
-2
-4
-6
-8
NORMALIZED TO ZERO AT 100kHz
0.1
1
10
100
0.1
1
10
0.1
1
10
100
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
_______________________________________________________________________________________
3
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
Typical Operating Characteristics (continued)
(V
= 5V, R = 150Ω to GND, output DC-coupled, T = +25°C.)
CC
L
A
MAX11507 PASSBAND RESPONSE
SD CHANNEL
FREQUENCY RESPONSE
SD/HD CHANNEL IN SD MODE
PASSBAND RESPONSE
SD/HD CHANNEL IN SD MODE
4
10
0
4
2
2
0
-10
-20
-30
-40
-50
-60
-70
0
-2
-4
-6
-8
-2
-4
-6
-8
NORMALIZED TO ZERO AT 100kHz
NORMALIZED TO ZERO AT 100kHz
0.1
1
10
0.1
1
10
100
100
100
0.1
1
10
100
7
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY RESPONSE
SD/HD CHANNEL IN HD MODE
PASSBAND RESPONSE
SD/HD CHANNEL IN HD MODE
GROUP DELAY vs. FREQUENCY
SD CHANNEL
6/MAX1507
10
0
4
2
120
100
80
60
40
20
0
-10
-20
-30
-40
-50
-60
-70
0
-2
-4
-6
-8
NORMALIZED TO ZERO AT 100kHz
0.1 10
0.1
1
10
100
1
0.1
1
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
GROUP DELAY vs. FREQUENCY
SD/HD CHANNEL IN SD MODE
GROUP DELAY vs. FREQUENCY
SD/HD CHANNEL IN HD MODE
DIFFERENTIAL GAIN, NTSC
SD CHANNEL
100
90
80
70
60
50
40
35
30
25
20
15
10
5
1.0
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
40
30
20
10
0
0
0.1
1
10
100
0.1
1
10
1
2
3
4
5
6
FREQUENCY (MHz)
FREQUENCY (MHz)
STEP
4
_______________________________________________________________________________________
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
6/MAX1507
Typical Operating Characteristics (continued)
(V
= 5V, R = 150Ω to GND, output DC-coupled, T = +25°C.)
CC
L
A
DIFFERENTIAL PHASE, NTSC
SD CHANNEL
DIFFERENTIAL GAIN, NTSC
SD/HD CHANNEL IN SD MODE
DIFFERENTIAL PHASE, NTSC
SD/HD CHANNEL IN SD MODE
0.4
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
0.3
0.2
0.1
0
-1.0
-1.0
-1.0
1
2
3
4
5
6
7
1
2
3
4
5
6
7
1
2
3
4
5
6
7
STEP
STEP
STEP
2T RESPONSE
SD CHANNEL
2T RESPONSE
SD/HD CHANNEL IN SD MODE
MAX11506 toc16
MAX11506 toc17
INPUT
INPUT
OUTPUT
OUTPUT
200ns/div
200ns/div
_______________________________________________________________________________________
5
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
Pin Description
PIN
1
NAME
SDIN1
SDIN2
SDIN3
FUNCTION
SD Video Input Channel 1
SD Video Input Channel 2
SD Video Input Channel 3
Power-Supply Input
2
3
4
V
CC
Frequency-Select Input. SD/HD select for channels 4, 5, and 6. Force FSEL high to select HD, and
low to select SD. Do not leave unconnected.
5
FSEL
6
7
SD/HDIN1
SD/HDIN2
SD/HDIN3
SD/HD Video Input Channel 1
SD/HD Video Input Channel 2
SD/HD Video Input Channel 3
8
9
SD/HDOUT3 SD/HD Video Output Channel 3
SD/HDOUT2 SD/HD Video Output Channel 2
SD/HDOUT1 SD/HD Video Output Channel 1
10
11
12, 13
14
15
16
GND
Ground
SDOUT3
SDOUT2
SDOUT1
SD Video Output Channel 3
SD Video Output Channel 2
SD Video Output Channel 1
6/MAX1507
Detailed Description
Inputs
The MAX11506/MAX11507 integrated filters offer 6 chan-
nels, 3 for SD video and 3 for either SD or HD video and
include +6dB output buffers on each channel. Each
channel of the MAX11506/MAX11507 contains a trans-
parent input clamp, a 9.0MHz 5th-order lowpass filter
and an output amplifier with a gain of 2V/V (see the
Typical Operating Circuit). The MAX11506 provides a flat
passband response and the MAX11507 provides a
0.8dB high-frequency boost at 5MHz on all SD-only
channels to help with system roll-off. The SD-only chan-
nels add 280mV of offset at the output.
Transparent Clamps
All inputs feature transparent clamps to allow either AC-
or DC-coupling of the inputs. The clamp remains inac-
tive while the input signal is above ground, offering true
DC input coupling. When the signal goes below
ground, as is the case when it is AC-coupled, the
clamp sets the sync tip close to the ground level.
Input Coupling
The choice of AC- or DC-coupling the input depends
on the video source. Many DACs have a current output
and are terminated to ground with a resistor; such sig-
nals 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 MAX11506/
Three channels, SD/HD1, SD/HD2, and SD/HD3 include
selectable SD and HD video filters, each with a trans-
parent input clamp, a 6th-order lowpass filter with a -3dB
bandwidth of 9.0MHz (SD) and 33MHz (HD), and an
output amplifier with a gain of 2V/V. The SD/HD chan-
nels add 550mV of offset at the output.
MAX11507, such as SCART or V -terminated DAC
CC
outputs.
The output voltage equations are:
DC-Coupled Inputs
When the input is DC-coupled, the voltage must remain
above zero but should not exceed 1.4V (typical).
V
= (2 x V ) + 0.28V
IN
SDOUT
V
= (2 x V ) + 0.55V
IN
SD/HDOUT
Typical voltage waveforms are shown in Figures 1 and 2.
6
_______________________________________________________________________________________
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
6/MAX1507
2.55V HD
2.28V SD
OUTPUT SIGNAL
MAX11506
MAX11507
INPUT
OUTPUT
1.0V
1.15V HD
0.88V SD
INPUT SIGNAL
0.55V HD
0.28V SD
0.3V
0.0V
Figure 1. Typical AC-Coupled Signal
2.59V HD
2.32V SD
OUTPUT SIGNAL
MAX11506
MAX11507
1.02V
INPUT
OUTPUT
1.19V HD
0.98V SD
INPUT SIGNAL
0.32V
0.59V HD
0.32V SD
0.02V
0.00V
Figure 2. Typical DC-Coupled Signal
_______________________________________________________________________________________
7
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
AC-Coupled Inputs
When 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 CVBS, Y,
R, G, or B, with or without sync pulses (Figure 3).
ENCODER
MAX11506
MAX11507
INPUT
For bipolar signals such as Pb and Pr, bias the AC-cou-
pled inputs to a fixed DC voltage, typically 0.59V, to
ensure that the transparent clamp remains off. Figure 4
shows a typical network. Determine the bias voltage using:
0.1µF
DAC
R2
R1+R2
V =
B
x V
− (I xR1)
(
)
AVCC L
where I is the input leakage current (typically 0.5µA).
L
Figure 3. Simple AC-Coupling for Unipolar Signals (CVBS, Y, R,
G, B)
SD Filters
The MAX11506/MAX11507 filters are optimized to deliv-
er a flat (MAX11506) or high-frequency boosted
(MAX11507) passband and high stopband attenuation.
The filter characteristic provides excellent time domain
response with low overshoot. The typical -3dB frequen-
cy of 9.0MHz guarantee minimal attenuation in the
passband, while at the same time offering a 27MHz
attenuation of typically -48dB.
V
CC
6/MAX1507
R1
820kΩ
ENCODER
DAC
MAX11506
MAX11507
INPUT
0.1µF
R2
120kΩ
HD Filters
The internal filters deliver a flat passband along with high
stopband attenuation. The filter characteristic provides
an excellent time domain response with low overshoot.
The typical -3dB frequency of 33MHz guarantees low
attenuation in the passband, while at the same time
allowing for a typical attenuation of -46dB at 74.25MHz.
Figure 4. AC-Coupling for Bipolar Signals (C, Pb, Pr)
Output Buffers
Applications Information
The MAX11506/MAX11507 feature output buffers with
+6dB gain that drive a standard 150Ω video load. A
typical load consists of a 75Ω backmatch resistor, an
optional 220µF or larger coupling capacitor, and a 75Ω
termination resistor. The offset between input and out-
put signals ensures that the blanking level on the output
is less than 1V after the backmatch resistor, thus meet-
ing digital TV specifications allowing the devices to
drive video loads directly without using costly AC-coupling
capacitors.
Output Considerations
The MAX11506/MAX11507 outputs may be DC- or AC-
coupled. These devices, with +6dB gain, are typically
connected to a 75Ω series backmatch resistor followed
by the video cable. Choose an AC-coupling capacitor
value that ensures that the lowest frequency content in
the video signal is passed and the field-time distortion
is kept within desired limits when using an AC connec-
tion. The selection of this value is a function of the input
impedance, and more importantly, the input leakage of
the circuit being driven. Common industry practice is to
use a 220µF or larger capacitor.
8
_______________________________________________________________________________________
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
6/MAX1507
The MAX11506/MAX11507 outputs are fully protected
for their low inductance. Place traces carrying video
signals appropriately to avoid mutual coupling. When
inputs are AC-coupled, place the capacitors as close
as possible to the device and keep traces short to mini-
mize parasitic capacitance and inductance. Refer to
the MAX11506/MAX11507 evaluation kit datasheet for
PCB layout.
against short circuits to ground. The short-circuit pro-
tection circuitry limits the output current to 75mA (typi-
cal) per output. Shorting more than one output to
ground simultaneously may exceed the maximum
package power dissipation.
PCB Layout Recommendations
Connect the power and ground traces to large copper
Chip Information
areas to enhance power dissipation. Bypass V
to
CC
PROCESS: BiCMOS
GND with 0.1µF and 1.0µF capacitors. Place the 0.1µF
capacitor closest to V . Use surface-mount capacitors
CC
Typical Operating Circuit
5V
10µF
0.1µF
V
CC
FSEL
SDOUT1
220µF
75Ω
SDIN1
Y1
C
OUT
75Ω
75Ω
75Ω
220µF
220µF
75Ω
75Ω
SDIN2
SDIN3
SDOUT2
OUT
CV
OUT
SDOUT3
VIDEO
SoC
MAX11506
MAX11507*
AC-COUPLING
CAPACITORS OPTIONAL
75Ω VIDEO
CABLE
DAC LOAD
RESISTORS
220µF
75Ω
G/Y2
SD/HDIN1
SD/HDIN2
SD/HDIN3
SD/HDOUT1
SD/HDOUT2
SD/HDOUT3
OUT
OUT
OUT
75Ω
75Ω
75Ω
220µF
75Ω
B/Pb
R/Pr
220µF
75Ω
GND
*THE MAX11507 FEATURES 0.8dB PEAKING PASSBAND RESPONSE ON THE 3 SD-ONLY CHANNELS.
_______________________________________________________________________________________
9
Low-Cost, 6-Channel SD Plus HD/SD
Selectable Video Filters and Buffers
Package Information
For the latest package outline information, go to www.maxim-ic.com/packages.
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
21-0055
16 QSOP
E16+1
6/MAX1507
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.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2008 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products, Inc.
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