ISL4089_06 Datasheet, PDF (1/9 Pages) Intersil Corporation – DC-Restored Video Amplifier

®
Data Sheet
June 28, 2006
ISL4089
FN6192.1
DC-Restored Video Amplifier
The ISL4089 is complete DC-restored monolithic video
amplifier sub-system. It contains a high performance video
amplifier and a nulling, sample-and-hold amplifier designed
to establish a programmable DC output level.
When the HOLD logic input “0” is applied the DC restore
function is active. The sample-and-hold amplifier loop is
closed and used to null the DC offset of the video amplifier.
This can occur during sync, or, at any time that a black level
is expected. When the HOLD input “1” is applied, the
correcting voltage is stored on the video amplifier’s input
coupling capacitor. This condition must be true during active
video. The restored DC voltage level can be adjusted using
an external reference voltage applied to the V_REF pin.
The device operates from a single +5V supply and is ideal
for +5V only systems when used with a sync separator, such
as the EL1883.
The ISL4089 is intended to directly replace the EL4089 only
in certain applications. This direct replacement requires that
the single positive supply is no higher than +5.5V and that no
part of the clamped output goes below ground. The NC on
pin 6 is not internally connected, so it can be connected to
the -5V pin in existing EL4089 applications.
The ISL4089 is specified for operation over -40°C to +85°C
temperature range.
Pinout
ISL4089
(8 Ld SOIC)
TOP VIEW
IN-
V+
-
IN+
+
V_OUT
V_REF
+
N/C
HOLD
GND
Features
• Complete video level DC-restoration system
• 0.03% differential gain and 0.05° differential phase
accuracy
• 300MHz -3dB small signal bandwidth at A_V = 1
• 150MHz -3dB small signal bandwidth at A_V = 2
• 300V/µs Slew Rate
• 0.1dB flatness to 80MHz
• +5V single supply operation
• TTL/CMOS compatible hold signal
• Pb-free plus anneal available (RoHS compliant)
Applications
• Input amplifier in video equipment
• DC-restoration amplifier in video mixers
Related Documents
• AN1261: ISL4089EVAL1 User’s Guide
• AN1089: EL4089 and EL4390 DC-Restored Video
Amplifier
Ordering Information
PART TAPE &
PKG.
PART NUMBER MARKING REEL PACKAGE DWG. #
ISL4089IBZ
(See Note)
4089IBZ
- 8 Ld SO MDP0027
(Pb-free)
ISL4089IBZ-T7 4089IBZ
(See Note)
7” 8 Ld SO MDP0027
(Pb-free)
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100%
matte tin plate termination finish, which are 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.
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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