ISL59832 Datasheet, PDF (1/14 Pages) Intersil Corporation – Dual Channel, Single Supply Video Reconstruction Filter with Charge Pump

®
Data Sheet
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
4^th 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
TEMP.
PART RANGE
MARKING (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL59832IRZ 59 832IRZ -40 to +85 16 Ld TQFN 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 1V_P-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
V_{S 3}
ENABLE 4
12 CAP+
11 ^CAP-
EP
10 VCP
9 GND_CP
5678
Block Diagram
VIDEO IN
(Y)
CLAMP +
SYNC
DETECTOR
ISL59832
CHANNEL 1
LPF
x2
9MHz
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.
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