HFA1245
Data Sheet
February 1999
File Number
3682.4
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.
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
Ordering Information
PART NUMBER
HFA1245IP
HA5022EVAL
TEMP.
RANGE (
o
C)
-40 to 85
PACKAGE
14 Ld PDIP
PKG.
NO.
E14.3
• Video Switching and Routing
• Professional Video Processing
• Video Digitizing Boards/Systems
• Multimedia Systems
• RGB Preamps
High Speed Op Amp DIP Evaluation Board
Pinout
HFA1245
(PDIP)
TOP VIEW
• Medical Imaging
• Hand Held and Miniaturized RF Equipment
• Battery Powered Communications
• High Speed Oscilloscopes and Analyzers
-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
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Copyright
©
Intersil Corporation 1999
INTERSIL [ INTERSIL CORPORATION ]
