HFA1245_04 Datasheet, PDF (1/14 Pages) Intersil Corporation – Dual, 420MHz, Low Power, Video, Current Feedback Operational Amplifier with Disable

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July 2004
HFA1245
FN3682.5
Dual, 420MHz, Low Power, Video, Current
Feedback Operational Amplifier with
Disable
The HFA1245 is a dual, high speed, low power current
feedback amplifier built with Intersil’s proprietary
complementary bipolar UHF-1 process.
The HFA1245 features individual TTL/CMOS compatible
disable controls. When pulled low they disable the
corresponding amplifier, which reduces the supply current
and forces the output into a high impedance state. This
feature allows easy implementation of simple, low power
video switching and routing systems. Component and
composite video systems also benefit from this op amp’s
excellent gain flatness, and good differential gain and phase
specifications.
Multiplexed A/D applications will also find the HFA1245
useful as the A/D driver/multiplexer.
The HFA1245 is a low power, high performance upgrade for
the popular Intersil HA5022. For a dual amplifier without
disable, in a standard 8 lead pinout, please see the HFA1205
data sheet.
Part # Information
TEMP.
PART NUMBER RANGE (^oC)
PACKAGE
PKG.
NO.
HFA1245IP
-40 to 85 14 Ld PDIP
E14.3
HA5022EVAL
High Speed Op Amp DIP Evaluation Board
Pinout
HFA1245
(PDIP)
TOP VIEW
-IN1 1
+-
+IN1 2
DISABLE 1 3
V- 4
DISABLE 2 ⁵
+IN2 6
-IN2 7
+-
14 OUT1
13 NC
12 GND
11 V+
10 _NC
9 _NC
8 _OUT2
Features
• Low Supply Current . . . . . . . . . . . . . . . . . 5.8mA/Op Amp
• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . . 2MΩ
• Low Crosstalk (5MHz) . . . . . . . . . . . . . . . . . . . . . . . -83dB
• High Off Isolation (5MHz). . . . . . . . . . . . . . . . . . . . . 65dB
• Wide -3dB Bandwidth (A_V = +2) . . . . . . . . . . . . . 420MHz
• Very Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . 1200V/μs
• Gain Flatness (to 50MHz) . . . . . . . . . . . . . . . . . . ±0.11dB
• Differential Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02%
• Differential Phase. . . . . . . . . . . . . . . . . . . . . 0.03 Degrees
• Individual Output Enable/Disable
• Output Enable/Disable Time . . . . . . . . . . . . . 150ns/30ns
• Pin Compatible Upgrade to HA5022
Applications
• Flash A/D Drivers
• High Resolution Monitors
• Video Multiplexers
• Video Switching and Routing
• Professional Video Processing
• Video Digitizing Boards/Systems
• Multimedia Systems
• RGB Preamps
• Medical Imaging
• Hand Held and Miniaturized RF Equipment
• Battery Powered Communications
• High Speed Oscilloscopes and Analyzers
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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