ISL59834 Datasheet, PDF (1/17 Pages) Intersil Corporation – Quad Channel, Single Supply, Video Reconstruction Filter with On-Board Charge Pump

®
Data Sheet
June 11, 2008
ISL59834
FN6268.1
Quad Channel, Single Supply, Video
Reconstruction Filter with On-Board
Charge Pump
The ISL59834 is a quad channel, single supply, video
reconstruction filter with integrated charge pump. It is
designed to operate on a single supply (3.0V to 3.6V) and
generate its own negative supply (-1.5V) using a regulated
charge pump. Input signals to the ISL59834 can be AC- or
DC-coupled. When AC-coupled, the backporch clamp sets
the blank level to ground at the output. Channels 1 and 3
have a sync detector whose output is available at
SYNC_OUTA and SYNC_OUTB, respectively. SYNC_INA
and SYNC_INB are inputs that provide timing for Channel 2
and Channel 4, respectively. Channel 2 and Channel 4 have
keyed clamps, which set the outputs to ground when
SYNC_INA or SYNC_INB are driven to the logic high state.
Each of the four outputs are capable of driving two DC or
AC-coupled standard video loads. The ISL59834 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 63mA. When
powered down, the device draws 5µA maximum supply
current. The ISL59834 is available in a 44 Ld 7x7 QFN
package.
Ordering Information
PART
NUMBER
(NOTE)
TEMP.
PART RANGE
MARKING (°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL59834IRZ 59 834IRZ -40 to +85 44 Ld QFN L44.7x7A
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.
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 Capacitor
• Integrated Sync Tip Clamp sets the Backporch to Ground
at the Output for Channels 1 and 3
• Integrated Keyed Clamp puts Channel 2 and Channel 4
Outputs to Ground During Sync
• Each Output Drives 2 Standard Video Loads
• Response Flat to 5MHz with 40dB Attenuation at 27MHz
• Pb-Free (RoHS compliant)
Applications
• Set-Top Box Receiver
• Television
• DVD Player
• Digital Camera
• Cell Phone
Block Diagram
VIDEO IN
(Y)
VIDEO IN
(C)
VIDEO IN
(Y)
VIDEO IN
(C)
CLAMP +
SYNC
DETECTOR
KEYED
CLAMP
CLAMP +
SYNC
DETECTOR
KEYED
CLAMP
ISL59834
CHANNEL 1
LPF
x2
9MHz
VIDEO OUT
(Y)
CHARGE PUMP
CHANNEL 2
LPF
x2
9MHz
VIDEO OUT
(C)
CHARGE PUMP
CHANNEL 3
LPF
9MHz
x2
VIDEO OUT
(Y)
CHARGE PUMP
CHANNEL 4
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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