HA-2544 查看數據表（PDF） - Intersil
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HA-2544 Datasheet PDF : 11 Pages
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HA-2544
Schematic Diagram
R1
R2
V+
R4
QP24
R2A
QP23
QP57
QP58
QP6
V-
QN22
R7
QP20
QN21
R28
R8
R9
QP19
QN36
QP5
C1
QN50
R37
R36
V-
QP32
QP33
D34
D37
QP44
QN43
D38
D39
R10
D40
V+
+INPUT
-INPUT
QN1 QN2
R24
200Ω
R25
200Ω
QN51
R30
QP52
QN53
R35
R32
36Ω
OUTPUT
R33
36Ω
QP54
D41
R11
QP16
QN17
QN18
R12
R13
QP15
QN59
QN9
QN10
QN46
R14
V+
QN13
QN14
QN55
QN60
QN11
QN12
QN48
R15
R16
5kΩ
R38
BAL
5kΩ
R39
R17
BAL
R18
R31
V-
Application Information
The HA-2544 is a true differential op amp that is as versatile
as any op amp but offers the advantages of high unity gain
bandwidth, high speed and low supply current. More
important than its general purpose applications is that the
HA-2544 was especially designed to meet the requirements
found in a video amplifier system. These requirements
include fine picture resolution and accurate color rendition,
and must meet broadcast quality standards.
In a video signal, the video information is carried in the
amplitude and phase as well as in the DC level. The amplifier
must pass the 30Hz line rate Iuminance level and the 3.58MHz
(NTSC) or 4.43MHz (PAL) color band without altering phase or
gain. The HA-2544’s key specifications aimed at meeting this
include high bandwidth (50MHz), very low gain flatness
(0.12dB at 10MHz), near unmeasurable differential gain and
differential phase (0.03% and 0.03 degrees), and low noise
(20nV/√Hz). The HA-2544 meets these guidelines.
The HA-2544 also offers the advantage of a full output voltage
swing of ±10V into a 1kΩ load. This equates to a full power
bandwidth of 2.4MHz for this ±10V signal. If video signal
levels of ±2V maximum is used (with RL = 1kΩ), the full power
bandwidth would be 11.9MHz without clipping distortion.
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