HFA1149
TM
Data Sheet
June 2000
File Number 4304.3
450MHz, Low Power, Video Operational
Amplifier with Programmable Output
Disable
Features
• Wide - 3dB Bandwidth (A = +2) . . . . . . . . . . . . . 450MHz
V
• Gain Flatness (To 250MHz) . . . . . . . . . . . . . . . . . . . 0.8dB
The HFA1149 is a high speed, low power, current feedback
amplifier built with Intersil’s proprietary complementary
bipolar UHF-1 process. This amplifier features a unique
combination of power and performance specifically tailored
for video applications.
• Very Fast Slew Rate (A = +2) . . . . . . . . . . . . . . 1100V/µs
V
• High Input Impedance . . . . . . . . . . . . . . . . . . . . . . 1.7MΩ
• Differential Gain/Phase. . . . . . . . . . . 0.02%/0.02 Degrees
• Low Supply Current . . . . . . . . . . . . . . . . . . . . . . . . . 10mA
• Fast Output Disable/Enable . . . . . . . . . . . . . . . 12ns/20ns
The HFA1149 incorporates an output disable pin which is
TTL/CMOS compatible, and user programmable for polarity
(active high or low). This feature eliminates the inverter
required between amplifiers in multiplexer configurations.
The ultra-fast (12ns/20ns) disable/enable times make the
HFA1149 the obvious choice for pixel switching and other
high speed multiplexing applications. The HFA1149 is a high
performance, pin compatible upgrade for the popular HA-5020
and HFA1145, as well as the CLC410.
Applications
• Professional Video Processing
• Video Switchers and Routers
• Medical Imaging
• PC Multimedia Systems
• Video Pixel Switching
• Video Distribution Amplifiers
• Flash Converter Drivers
• Radar/IF Processing
For a comparably performing op amp without an output
disable, please refer to the HFA1109 data sheet.
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE ( C)
PKG.
NO.
o
PACKAGE
8 Ld SOIC
HFA1149 PIN DESCRIPTIONS
HFA1149IB
(H1149)
-40 to 85
M8.15
PIN NAME
DESCRIPTION
HFA11XXEVAL
DIP Evaluation Board for High Speed
Op Amps
Threshold Set Optional Logic Threshold Set. Maintains disable
pin TTL compatibility with asymmetrical supplies
(e.g., +10V, 0V).
Pinout
Polarity Set
Defines Polarity of Disable Input. High or floating
selects active low disable (i.e., DIS).
HFA1149
(SOIC)
TOP VIEW
DIS/DIS
TTL Compatible Disable Input. Output is driven to
a true Hi-Z state when active. Polarity depends on
state of Polarity Set Pin.
THRESHOLD SET
1
2
3
4
8
7
6
5
DIS / DIS
V+
-IN
+IN
V-
HFA1149 DISABLE FUNCTIONALITY
-
+
OUT
POLARITY SET
(PIN 5)
DISABLE (PIN 8)
High or Float
Low
OUTPUT (PIN 6)
Enabled
POLARITY SET
High or Float
High or Float
Low
Disabled
High or Float
Low
Disabled
Low
Enabled
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright © Intersil Corporation 2000
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