HFA1115883 Datasheet, PDF (1/5 Pages) Intersil Corporation – High Speed, Low Power, Output Limiting Closed Loop Buffer Amplifier

TM
HFA1115/883
July 1994
High Speed, Low Power, Output Limiting
Closed Loop Buffer Amplifier
Features
• This Circuit is Processed in Accordance to MIL-STD-
883 and is Fully Conformant Under the Provisions of
Paragraph 1.2.1.
• User Programmable Output Voltage Limiting
• User Programmable For Closed-Loop Gains of +1, -1
or +2 Without Use of External Resistors
• Standard Operational Amplifier Pinout
• Fast Overdrive Recovery . . . . . . . . . . . . . . . <1ns (Typ)
• Low Supply Current. . . . . . . . . . . . . . . . . . 6.9mA (Typ)
• Excellent Gain Accuracy . . . . . . . . . . . . . . 0.99V/V (Typ)
• Wide -3dB Bandwidth . . . . . . . . . . . . . . . 225MHz (Typ)
• Fast Slew Rate . . . . . . . . . . . . . . . . . . . . 1135V/µs (Typ)
• High Input Impedance . . . . . . . . . . . . . . . . . . 1MΩ (Typ)
• Excellent Gain Flatness (to 50MHz) . . . . . ±0.1dB (Typ)
Applications
• Flash A/D Driver
• Video Switching and Routing
• Pulse and Video Amplifiers
• Wideband Amplifiers
• RF/IF Signal Processing
• Medical Imaging Systems
Description
The HFA1115/883 is a high speed closed loop Buffer featur-
ing both user programmable gain and output limiting. Manu-
factured in Intersil’ proprietary complementary bipolar UHF-1
process, the HFA1115/883 also offers a wide -3dB band-
width of 225MHz, very fast slew rate, excellent gain flatness
and high output current.
This buffer is the ideal choice for high frequency applications
requiring output limiting, especially those needing ultra fast
overload recovery times. The limiting function allows the
designer to set the maximum positive and negative output lev-
els, thereby protecting later stages from damage or input satu-
ration. The HFA1115/883 also allows for voltage gains of +2,
+1, and -1, without the use of external resistors. Gain selec-
tion is accomplished via connections to the inputs, as
described in the “Application Information” text. The result is a
more flexible product, fewer part types in inventory, and more
efficient use of board space.
Compatibility with existing op amp pinouts provides flexibility to
upgrade low gain amplifiers, while decreasing component
count. Unlike most buffers, the standard pinout provides an
upgrade path should a higher closed loop gain be needed at a
future date.
Ordering Information
PART NUMBER
HFA1115MJ/883
TEMPERATURE
RANGE
-55^oC to +125^oC
PACKAGE
8 Lead CerDIP
Pinout
HFA1115/883
(CERDIP)
TOP VIEW
NC 1
350
350
-IN 2
-
+
+IN 3
V- 4
8 V_H
7 V+
6 OUT
5 V_L
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright © Intersil Americas Inc. 2002. All Rights Reserved
194
Spec Number 511109-883
FN3724