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PDF ISL59960 Data sheet ( Hoja de datos )
| Número de pieza | ISL59960 | |
| Descripción | Single-channel Adaptive Equalizer | |
| Fabricantes | Intersil | |
| Logotipo |  |
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960MegaQ™: An Automatic 960H and Composite Video
Equalizer, Fully-Adaptive to 4000 Feet
ISL59960
The ISL59960 is a single-channel adaptive equalizer for 960H
(WD1) or 720H (D1) composite video designed to
automatically compensate for long runs of CAT 5/CAT 6 or
RG-59 cable, producing high quality video output with no user
interaction. The ISL59960 equalizes up to 4000 feet (1200
meters) of CAT 5/CAT 6 cable.
960MegaQ™ compensates for high frequency cable losses of
up to 70dB at 9MHz, as well as source amplitude variations up
to ±3dB.
The ISL59960 operates from a single +5V supply. Inputs are
AC-coupled and internally DC-restored. The output can drive
2VP-P into two source-terminated 75Ω loads (AC-coupled or
DC-coupled).
Related Literature
• AN1780 “ISL59605-Catx-EVZ/ISL59960-Catx-EVZ
Evaluation Board” (Stand-Alone Evaluation Board)
• AN1776 “ISL59603-Coax-EVZ/ISL59960-Coax-EVZ
Evaluation Board” (Stand-Alone Evaluation Board)
• AN1775 “ISL59605-SPI-EVALZ/ISL59960-SPI-EVALZ
Evaluation Board (with Serial Interface) Operation (Rev 5.0)”
(Evaluation Board with USB Serial Interface)
Features
• Equalizes both 960H and 720H video
• Equalizes up to 4000 feet of Cat 5/Cat 6 and up to 5000
feet (1500m) of RG-59
• Fully automatic, stand-alone operation - no user adjustment
required
• 13MHz -3dB bandwidth
• ±8kV ESD protection on all inputs
• Automatic cable type compensation
• Compatible with color or monochrome, 960H, NTSC or PAL
signals
• Automatic polarity detection and inversion
• Compensates for ±3dB source variation (in addition to cable
losses)
• Optional serial interface adds additional functionality
• Works with single-ended or differential inputs
• Output drives up to two 150Ω video loads
Applications
• Surveillance video
• Video distribution
Typical Application
960H, NTSC, PAL,
MONOCHROME CAMERA/
VIDEO SOURCE
APPLICATION CIRCUIT FOR CAT X CABLE
1.0µF
IN+
PASSIVE
BALUN
UP TO 4000 FEET OF
CAT 5/CAT 6 CABLE
50Ω
50 Ω
1k Ω
1.0µF
GND
IN-
ISL59960
OUT
CFB
75 Ω
300Ω 0.047µF
1500pF
960H, NTSC, PAL,
MONOCHROME CAMERA/
VIDEO SOURCE
0 TO 5000 FEET OVER RG-59
COPPER-CORE COAXIAL CABLE
VCC
0.1µF
APPLICATION CIRCUIT FOR COAXIAL CABLE
10k Ω
1.0µF
37.5 Ω
37.5 Ω
0.1µF
1kΩ
1.0µF
IN+
GND
IN-
ISL59960
OUT
CFB
7 5 . 0Ω
300Ω 0.047µF
1500pF
TV/DVR
TV/DVR
December 18, 2012
FN8358.0
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas Inc. 2012. All Rights Reserved
Intersil (and design) and MegaQ are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.
1 page  
ISL59960
Absolute Maximum Ratings (TA = +25°C)
Supply Voltage between VDD and GND . . . . . . . . . . . . . . . . . . . . . . . . 5.75V
Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Maximum Voltage on any Pin . . . . . . . . . . . . . . . . GND - 0.3V to VDD + 0.3V
ESD Rating
Human Body Model (tested per JESD22-A114) . . . . . . . . . . . . . . 8,000V
Machine Model (Tested per JESD22-A115). . . . . . . . . . . . . . . . . . . . 600V
CDM Model (Tested per JESD22-C101) . . . . . . . . . . . . . . . . . . . . . 2,000V
Latch Up (Tested per JESD78; Class II, Level A) . . . . . . . . . . . . . . . . 100mA
Thermal Information
Thermal Resistance (Typical)
θJA (°C/W) θJC (°C/W)
20 Ld QFN Package (Notes 4, 5) . . . . . . . .
40
3.7
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Ambient Operating Temperature . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
Die Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+150°C
Pb-Free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product
reliability and result in failures not covered by warranty.
NOTES:
4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech
Brief TB379.
5. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications VDD = VDD1 = VDD2 = +5V, source video amplitude before any cable loss = 1VP-P, cable type = Cat 5,
cable length = 0 feet, RL = 150Ω (75Ω series + 75Ω load to ground), TA = +25°C, exposed die plate = 0V, unless otherwise specified. Max Cat 5 cable
length = 4000 feet.
PARAMETER
DESCRIPTION
CONDITIONS
MIN MAX
(Note 6) TYP (Note 6)
UNIT
SUPPLY
VDD
IS1
IS2
PSRRDC
AC PERFORMANCE
VDD Operating Range
VDD1 Supply Current
VDD2 Supply Current
Power Supply Rejection Ratio
No input, no load
No input, no load
4.5 5.0 5.5
45 60
25 45
60
V
mA
mA
dB
BW -3dB Bandwidth
Cable length = 0 feet
13 MHz
DG Differential Gain
Cable length = 3200 feet,
20IRE Sub Carrier on 100% ramp
.75
%
DP Differential Phase
Cable length = 3200 feet,
20IRE Sub Carrier on 100% ramp
.5
°
DC PERFORMANCE
VBL Output Blanking/Backporch Level
INPUT CHARACTERISTICS
Measured at VIDEO OUT pin
0.82
0.95
1.07
V
VINDIFF_MIN
Minimum Correctable Peak-to-Peak
Signal Swing
Measured at the source-end of
cable, before cable losses
0.7 VP-P
VINDIFF_MAX
Maximum Correctable Peak-to-Peak
Signal Swing
Measured at the source-end of
cable, before cable losses
1.4 VP-P
VCM-MIN
VCM-MAX
SNR
Min Common Mode Input Voltage
Max Common Mode Input Voltage
Signal-to-Noise Ratio,
NTC-7 Weighted Filter
EQ = 0 feet
EQ = 1,000 feet
1V
4V
-68 dB rms
-67 dB rms
EQ = 2,000 feet
-66 dB rms
EQ = 3,000 feet
-65 dB rms
EQ = 4,000 feet
-61 dB rms
CMRR
Common-mode Rejection Ratio at
fIN = 100kHz
0 feet cable
1600 feet cable
-50 dB
-41 dB
IClamp
Input Clamp Current
25 µA
5 FN8358.0
December 18, 2012
5 Page 
ISL59960
go low until/unless the device is reset by toggling the INVERT pin.
A reset should only be necessary if the length or type of cable
was changed without cycling power.
To enable the Lock Until Reset mode, tie the LOCKED output pin
to the FREEZE input pin as shown in Figure 9 on page 9.
To generate a reset (and trigger a re-equalization), toggle the
external INVERT pin. Depending on the initial state of INVERT,
this would be a high-low-high or low-high-low sequence.
CONTINUOUS UPDATE
In the Continuous Update mode, 960MegaQ™ will continuously
try to find the optimum equalization solution. When the
equalization has settled for 100 sequential video lines with no
changes, the LOCKED pin will go high. However, once lock is
achieved, noise and average-picture-level changes may cause the
device to unlock, causing some image perturbation while
960MegaQ™ re-equalizes.
The Continuous Update mode is enabled whenever the FREEZE
pin is set to a logic low (grounded).
Polarity Detection and Correction
960MegaQ™ features polarity detection and correction,
automatically detecting incorrectly-wired input signals and
inverting the signal inside the IC as necessary. The detected
polarity is indicated by the state of the INVERT pin.
The INVERT pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal is inverted (the “+”
signal on the “-” input and vice-versa). The state of the invert
signal is then used to tell the signal processing logic whether or
not to invert the signal in the signal path.
A logic high on INVERT indicates that the positive differential
input signal is on IN- (pin 5) and the negative differential input
signal is on IN+ (pin 3). A logic low indicates nominal polarity.
However, the unique design of the INVERT I/O pin (Figure 12)
also allows 960MegaQ™’s internal inversion detector to be
overdriven externally, forcing 960MegaQ™ to invert or not invert
the signal regardless of the state of the inversion detection
function. This is not necessary in normal operation, but it may
improve performance in particularly noisy environments when
the polarity of the signal is guaranteed to be correct.
INVERT
PIN
INVERSION
DETECTION
LOGIC
13kΩ
ISL59960
SIGNAL
PROCESSING
FIGURE 12. INVERT PIN STRUCTURE
The COLOR Pin
The color pin has 2 modes of operation. It is typically used to
indicate whether or not the incoming signal has a colorburst or
not. The state of the color signal is then used to tell the signal
processing logic whether or not it can rely on the presence of a
colorburst signal. A logic high indicates a color signal; a logic low
indicates monochrome.
COLOR
PIN
COLOR
DETECTION
LOGIC
13kΩ
ISL59960
SIGNAL
PROCESSING
FIGURE 13. COLOR PIN STRUCTURE
However, the unique design of the COLOR I/O pin (Figure 13) also
allows 960MegaQ™’s internal color detector to be overdriven
externally. This is not necessary in normal operation, but it may
improve performance in particularly noisy environments when
the signal type is predetermined.
Monochrome Video Signals
960MegaQ™ will equalize monochrome signals to the same
distance as color signals. However, due to the high level of noise
past ~3500 feet, the COLOR and LOCKED indicators may
become invalid for monochrome signals. The device will still
equalize properly if this occurs.
Security Cameras
960MegaQ™ is ideal for security camera installations.
The automatic adaptive equalizer doesn't need any active silicon
on the transmit side of the cable, enabling upgrading of older
installations without having to touch the installed camera base,
including older monochrome cameras.
960MegaQ™ automatically adjusts for wiring polarity errors as
well as for optimum image quality. These features eliminate the
need for the installer to make any adjustments.
With an extended equalization range of 4000ft, the ISL59960
enables cameras to be placed in even more remote locations,
enabling coverage of up to three square miles from a single
monitoring station.
Additional Equalization Modes Available
With the Serial Interface
In addition to the Lock Until Reset and Continuous Update
modes, software control of 960MegaQ™ through the SPI
interface adds a Lock Until Signal Loss mode and a Manual
Equalization mode.
Note: When controlling 960MegaQ™ through the SPI interface,
the external FREEZE pin must be tied to ground (logic low).
Failure to keep FREEZE at a logic low will prevent the software
controls from working properly.
11 FN8358.0
December 18, 2012
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet ISL59960.PDF ] | |
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