HFA1112
®
Data Sheet
July 27, 2005
FN2992.8
850MHz, Low Distortion Programmable
Gain Buffer Amplifiers
Features
• User Programmable for Closed-Loop Gains of +1, -1 or +2
without Use of External Resistors
The HFA1112 is a closed loop Buffer featuring user
programmable gain and ultra high speed performance.
Manufactured on Intersil’s proprietary complementary
bipolar UHF-1 process, these devices offer a wide -3dB
bandwidth of 850MHz, very fast slew rate, excellent gain
flatness, low distortion and high output current.
• Wide -3dB Bandwidth. . . . . . . . . . . . . . . . . . . . . . 850MHz
• Very Fast Slew Rate. . . . . . . . . . . . . . . . . . . . . . 2400V/µs
• Fast Settling Time (0.1%). . . . . . . . . . . . . . . . . . . . . 11ns
• High Output Current. . . . . . . . . . . . . . . . . . . . . . . . . 60mA
• Excellent Gain Accuracy . . . . . . . . . . . . . . . . . . . 0.99V/V
• Overdrive Recovery . . . . . . . . . . . . . . . . . . . . . . . . <10ns
• Standard Operational Amplifier Pinout
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. Gain selection is accomplished via
connections to the inputs, as described in the “Application
Information” section. The result is a more flexible product,
fewer part types in inventory, and more efficient use of board
space.
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• RF/IF Processors
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.
• Driving Flash A/D Converters
• High-Speed Communications
• Impedance Transformation
• Line Driving
This amplifier is available with programmable output limiting
as the HFA1113. For applications requiring a standard buffer
pinout, please refer to the HFA1110 data sheet.
• Video Switching and Routing
• Radar Systems
HFA1112 (PDIP, SOIC)
• Medical Imaging Systems
TOP VIEW
• Related Literature
300
- AN9507, Video Cable Drivers Save Board Space
NC
-IN
+IN
V-
1
2
3
4
8
7
6
5
NC
V+
300
-
Related Literature
• Technical Brief TB363 “Guidelines for Handling and
Processing Moisture Sensitive Surface Mount Devices
(SMDs)”
+
OUT
NC
Ordering Information
PART NUMBER
(BRAND)
TEMP.
RANGE (°C)
PKG.
DWG. #
PACKAGE
8 Ld PDIP
8 Ld SOIC
Pin Descriptions
HFA1112IP
-40 to 85
-40 to 85
E8.3
NAME
PIN NUMBER
DESCRIPTION
No Connection
HFA1112IB
(1112IB)
M8.15
M8.15
M8.15
M8.15
NC
1, 5, 8
HFA1112IB96
(1112IB)
8 Ld SOIC Tape and Reel
-IN
2
3
4
6
7
Inverting Input
Non-Inverting Input
Negative Supply
Output
+IN
V-
HFA1112IBZ
(1112IBZ) (Note)
-40 to 85
8 Ld SOIC
(Pb-free)
HFA1112IBZ96
(1112IBZ) (Note)
8 Ld SOIC Tape and Reel
(Pb-free)
OUT
V+
Positive Supply
HFA11XXEVAL
High Speed Op Amp DIP Evaluation Board
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.
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 registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2000 2004, 2005. All Rights Reserved
1
All other trademarks mentioned are the property of their respective owners.
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