|
|
PDF ISL59832 Data sheet ( Hoja de datos )
| Número de pieza | ISL59832 | |
| Descripción | Single Supply Video Reconstruction Filter | |
| Fabricantes | Intersil | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ISL59832 (archivo pdf) en la parte inferior de esta página. Total 14 Páginas | ||
|
No Preview Available !
NOc1NTo-8nOR8taE8Rc-CEItDNOCoaTMOutEarMMRTSMESehNIEcLehDNeonEDtriDcEwaDFlwOSRwRuE.ipPnNpLtEeoArWrsCt iCElD.ceMEonSEmtIeNG/rTtNsacSt
June 11, 2008
ISL59832
FN6267.1
Dual Channel, Single Supply Video
Reconstruction Filter with Charge Pump
The ISL59832 is a dual channel, single supply video driver
with reconstruction filter and charge pump. It is designed to
drive SDTV displays with S-Video (Y/C) signals. It operates
on a single supply (3.0V to 3.6V) and generates its own
negative supply (-1.5V) using a regulated charge pump.
Input signals can be AC- or DC-coupled. When AC-coupled,
the sync tip clamp sets the blank level to ground at the
output of Channel 1 thus ensuring that the sync-tip voltage
level is set to approximately -300mV at the back-termination
resistor of a standard video load. Channel 1 also has a sync
detector whose output is available at SYNC_OUT pin. In a
typical application where the luma is connected to
Channel 1, and chrominance is connected to Channel 2,
SYNC_IN is connected to SYNC_OUT thus providing timing
to Channel 2. Channel 2 has a keyed clamp which sets the
output to ground when SYNC_IN is driven to the logic high
state. The ISL59832 is capable of driving two DC- or
AC-coupled standard video loads. The ISL59832 features a
4th order Butterworth reconstruction filter that provides a
9MHz nominal -3dB frequency and 40dB of attenuation at
27MHz. Nominal operational current is 31mA. When
powered down, the device draws 1µA maximum supply
current. The ISL59832 is available in 16 Ld TQFN package.
Ordering Information
PART
NUMBER
ISL59832IRZ
TEMP.
PART RANGE
MARKING (°C)
PACKAGE
(Pb-Free)
59 832IRZ -40to +85 16 Ld TQFN
PKG.
DWG. #
MDP0046
NOTE: These Intersil Pb-free plastic packaged products employ
special Pb-free material sets, molding compounds/die attach
materials, and 100% matte tin plate plus anneal (e3 termination finish,
which is RoHS compliant and compatible with both SnPb and Pb-free
soldering operations). Intersil Pb-free products are MSL classified at
Pb-free peak reflow temperatures that meet or exceed the Pb-free
requirements of IPC/JEDEC J STD-020.
Applications
• Set Top Box Receiver
• Television
• DVD Player
Features
• 3.3V Nominal Supply, Operates Down to 3.0V
• DC-Coupled Outputs
• Inputs can be AC- or DC-Coupled
• Eliminates the Need for Large Output Coupling Capacitors
• Integrated Sync Tip Clamp sets Backporch to Ground at
the Output For Channel 1 for 1VP-P Standard Video Signal
• Integrated Keyed Clamp Puts Channel 2 Output to Ground
During Sync
• Each Output Drives 2 Standard Video Loads
• Response Flat to 5MHz, with 40dB Attenuation at 27MHz
• Pb-Free (RoHS compliant)
Pinout
ISL59832
(16 LD TQFN)
TOP VIEW
16 15 14 13
SYNC_IN 1
SYNC_OUT 2
VS 3
ENABLE 4
12 CAP+
EP 11 CAP-
10 VCP
9 GNDCP
5678
Block Diagram
VIDEO IN
(Y)
CLAMP +
SYNC
DETECTOR
ISL59832
CHANNEL 1
LPF
9MHz
x2
VIDEO OUT
(Y)
CHARGE PUMP
VIDEO IN
(C)
KEYED
CLAMP
CHANNEL 2
LPF
9MHz
x2
VIDEO OUT
(C)
CHARGE PUMP
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
1 page  
Block Diagram
VS
SYNC_OUT
ISL59832
ENABLE
SYNC DETECTOR
LPF LEVEL
IN1
SHIFT
X2
9MHz
(-310mV)
-
+ -593mV
VEEIN
LPF LEVEL
IN2
SHIFT
X2
9MHz
(-165mV)
-
KEYED
CLAMP
+
0V
VEEIN
ISL59832
GND
CHARGE
PUMP
VEEOUT GNDCP CAP+
CAP-
VCP
OUT1
OUT2
SYNC_IN
VEEIN
5 FN6267.1
June 11, 2008
5 Page 
ISL59832
Typical Performance Curves VCP = VS = 3.3V, CF = 0.1µF, CS = 0.22µF, CFIL = 0.4µF, CIN1= CIN2 = 0.1µF, RL1= RL2 = 150.
TIME SCALE = 20ns/DIV
VERTICAL SCALE = 20mV/DIV
0
VS = VCP = +3.3V
-10 RL = 150
-20 VOUT = 0 TO 2VP, SINE WAVE
-30
-40
-50
fIN = 500kHz
fIN = 5MHz
-60
FIGURE 25. CHARGE PUMP FEEDTHROUGH AT AMPLIFIER
OUTPUT
-700.5 0.8 1.1 1.4 1.7 2.0
OUTPUT VOLTAGE (V)
FIGURE 26. THD (dBc) vs OUTPUT VOLTAGE (VP-P)
4.5
4.0
3.5
3.0
2.5
2.0 16 LD TQFN PACKAGE
4mmx4mm
1.5 JA = +46°C/W
1.0
0.5
0
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90
AMBIENT TEMPERATURE (°C)
FIGURE 27. PACKAGE POWER DISSIPATION vs AMBIENT TEMPERATURE
Description of Operation and Application Information
Theory of Operation
The ISL59832 is a single supply video driver with a
reconstruction filter and an on-board charge pump. It is
designed to drive SDTV displays with S-video (Y-C) or
composite video (CV) signals. The input signals can be AC
or DC-coupled. When AC-coupled, a sync tip clamp forces
the blank level to ground at the output of Channel 1 and a
keyed clamp forces the average level of Channel 2 to
ground. The ISL59832 is capable of driving two AC- or DC-
coupled standard video loads and has a 4th order
Butterworth reconstruction filter with nominal -3dB frequency
set to 10MHz, providing 40dB of attenuation at 27MHz. The
ISL59832 is designed to operate with a single supply voltage
range ranging from 3.0V to 3.6V. This eliminates the need for
a split supply with the incorporation of a charge pump
capable of generating a bottom rail as much as 1.5V below
ground; providing a 4.8V range on a single 3.3V supply. This
performance is ideal for NTSC video with negative-going
sync pulses.
Output Amplifier
The ISL59832 output amplifiers provide a gain of +6dB. The
Channel 1 output amplifier is able to drive a 2.8VP-P video
signal into a 150 load to ground, while the Channel 2
amplifier is able to drive a 2.8VP-P into a 150or 75load to
ground.
The outputs are highly-stable, low distortion, low power, high
frequency amplifiers capable of driving moderate (10pF)
capacitive loads.
Input/Output Range
The ISL59832 inputs have a dynamic range of 0 to 1.4VP-P.
This allows the device to handle the maximum possible
video signal inputs. As the input signal moves outside the
specified range, the output signal will exhibit increasingly
higher levels of harmonic distortion.
The Charge Pump
The ISL59832 charge pump provides a bottom rail up to
1.5V below ground while operating on a 3.0V to 3.6V power
supply. The charge pump is driven by an internal 13MHz
clock.
To reduce the noise on the power supply generated by the
charge pump connect a lowpass RC-network between
11 FN6267.1
June 11, 2008
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet ISL59832.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ISL59830 | True Single Supply Video Driver |  Intersil Corporation |
| ISL59830A | True Single Supply Video Driver | Intersil Corporation |
| ISL59831 | Single Supply Video Driver | Intersil Corporation |
| ISL59832 | Single Supply Video Reconstruction Filter | Intersil |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |