HA-2444/883
August 1998
Selectable, Four Channel
Video Operational Ampli鏗乪r
Description
The HA-2444/883 is a channel-selectable video op amp consisting
of four differential inputs, a single-ended output, and digital control
circuitry allowing two digital inputs to activate one of the four differ-
ential inputs. The HA-2444/883 also includes a high impedance
output state allowing the outputs of multiple HA-2444/883s to be
wire-OR'd. Functionally, the HA-2444/883 is equivalent to four
wideband video op amps and a wideband multiplexer.
Unlike similar competitor devices, the HA-2444/883 is not
restricted to multiplexing. Any op amp con鏗乬uration can be used
with any of the inputs. Signal ampli鏗乧ation, addition, integration,
and more can be put under digital control with broadcast quality
performance.
The key video parameters of the HA-2444/883 have been opti-
mized without compromising DC performance. Gain Flatness, to
10MHz, is only 0.12dB. Differential gain and phase are typically
0.03% and 0.03 degrees, respectively.
Laser trimming allows offset voltages in the 4.0mV range and a
unique common current source design assures minimal channel-
to-channel mismatch, while maintaining 60dB of crosstalk rejection
at 5MHz. Open loop gain of 76dB and low input offset and bias
currents enhance the performance of this versatile device.
Uses for the HA-2444/883 include video test equipment, guidance
systems, radar displays, and other precise imaging systems where
stringent gain and phase requirements have previously required
costly hybrids and discrete circuitry. It will also be used for systems
requiring high speed signal conditioning, such as data acquisition
systems, specialized instrumentation, and communications sys-
tems.
Features
鈥?This Circuit is Processed in Accordance to MIL-
STD-883 and is Fully Conformant Under the Pro-
visions of Paragraph 1.2.1.
鈥?Digital Selection of Input Channel
鈥?Unity Gain Stable
鈥?Gain Flatness (to 10MHz) . . . . . . . . 0.12dB (Typ)
鈥?Differential Gain . . . . . . . . . . . . . . . . 0.03% (Typ)
鈥?Differential Phase. . . . . . . . . . 0.03 Degrees (Typ)
鈥?Fast Channel Selection . . . . . . . . . . . 100ns (Max)
鈥?Crosstalk Rejection . . . . . . . . . . . . . . . 60dB (Typ)
Applications
鈥?Programmable Gain Ampli鏗乪r
鈥?Special Effects Processors
鈥?Video Distribution Systems/Multiplexers
鈥?Heads-up/Night Vision Displays
鈥?Radar Video
鈥?Flight Simulators
鈥?IR Imaging
Ordering Information
PART
NUMBER
HA1-2444/883
TEMPERATURE
RANGE
-55
o
C to +125
o
C
PACKAGE
16 Lead CerDIP
Pinout
HA-2444/883
(CERDIP)
TOP VIEW
Logic Operation
TRUTH TABLE
SELECTED
CHANNEL
1
2
3
4
NONE-OUT is set to a high
impedance state.
EN
GND
EN
+IN2
-IN2
V-
+IN1
-IN1
OUT
1
2
3
4
5
6
7
8
+
-
+
-
+
-
DECODE
CONTROL
+
-
16
15
14
13
12
11
10
9
D1
D0
+IN4
-IN4
V+
D1
L
L
H
H
X
D0
L
H
L
H
X
H
H
H
H
L
+IN3
-IN3
N/C
L = Low State (0.8V Max.)
H = High State (2.4V Min.)
X = Don鈥檛 Care
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
漏
Intersil Corporation 1999
Spec Number
3-1
511091-883
File Number
3608.1
INTERSIL
1
2
3
4
5
6
7
