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®
HFA1113
850MHz, Low Distortion, Output Limiting,
Programmable Gain, Buffer Amplifier
The HFA1113 is a high speed Buffer featuring user
programmable gain and output limiting coupled with ultra
high speed performance. This buffer is the ideal choice for
high frequency applications requiring output limiting,
especially those needing ultra fast overload recovery times.
The output limiting function allows the designer to set the
maximum positive and negative output levels, thereby
protecting later stages from damage or input saturation. The
sub-nanosecond overdrive recovery time quickly returns the
amplifier to linear operation following an overdrive condition.
A unique feature of the pinout allows the user to select a
voltage gain of +1, -1, or +2, without the use of any external
components, as described in the “Application Information”
section. 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.
Component and composite video systems will also benefit
from this buffer’s performance, as indicated by the excellent
gain flatness, and 0.02%/0.04 Degree Differential
Gain/Phase specifications (R
L
= 150Ω).
For Military product, refer to the HFA1113/883 data sheet.
Pinout
HFA1113
(SOIC)
TOP VIEW
Features
• User Programmable Output Voltage Limiting
• User Programmable For Closed-Loop Gains of +1, -1 or
+2 Without Use of External Resistors
• Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 850MHz
• Excellent Gain Flatness (to 100MHz). . . . . . . . . . ±0.07dB
• Low Differential Gain and Phase . . . 0.02%/0.04 Degrees
• Low Distortion (HD3, 30MHz) . . . . . . . . . . . . . . . . -73dBc
• Very Fast Slew Rate . . . . . . . . . . . . . . . . . . . . . 2400V/µs
• Fast Settling Time (0.1%). . . . . . . . . . . . . . . . . . . . . 13ns
• High Output Current. . . . . . . . . . . . . . . . . . . . . . . . . 60mA
• Excellent Gain Accuracy . . . . . . . . . . . . . . . . . . . 0.99V/V
• Overdrive Recovery . . . . . . . . . . . . . . . . . . . . . . . . . <1ns
• Standard Operational Amplifier Pinout
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• RF/IF Processors
• Driving Flash A/D Converters
• High-Speed Communications
• Impedance Transformation
• Line Driving
• Video Switching and Routing
• Radar Systems
• Medical Imaging Systems
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (
o
C) PACKAGE
PKG.
DWG. #
HFA1113IB
(H1113I)
-40 to 85 8 Ld SOIC M8.15
HFA1113IBZ
(H1113I) (Note)
-40 to 85 8 Ld SOIC
(Pb-free)
M8.15
HFA1113IBZ96
(H1113I) (Note)
8 Ld SOIC Tape and Reel
(Pb-free)
M8.15
HFA11XXEVAL DIP Evaluation Board For High Speed Op Amps
NOTE: Intersil Pb-free plus anneal products employ special Pb-free material sets;
molding compounds/die attach materials and 100% matte tin plate termination finish,
which are RoHS compliant and compatible with both SnPb and Pb-free soldering
operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow
temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020.
NC
-IN
+IN
V-
1
2
3
4
8
7
6
5
V
H
V+
OUT
V
L
+
300
300
-
Pin Descriptions
NAME PIN NUMBER DESCRIPTION
NC 1 No Connection
-IN 2 Inverting Input
+IN 3 Non-Inverting Input
V- 4 Negative Supply
V
L
5 Lower Output Limit
OUT 6 Output
V+ 7 Positive Supply
V
H
8 Upper Output Limit
Data Sheet July 11, 2005 FN1342.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 1999, 2005. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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