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HFA1112

Renesas
Part Number HFA1112
Manufacturer Renesas
Description Low Distortion Programmable Gain Buffer Amplifiers
Published May 30, 2020
Detailed Description DATASHEET HFA1112 850MHz, Low Distortion Programmable Gain Buffer Amplifiers FN2992 Rev 8.00 July 27, 2005 The HFA111...
Datasheet PDF File HFA1112 PDF File

HFA1112
HFA1112

Overview
DATASHEET HFA1112 850MHz, Low Distortion Programmable Gain Buffer Amplifiers FN2992 Rev 8.
00 July 27, 2005 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.
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.
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.
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.
HFA1112 (PDIP, SOIC) TOP VIEW NC 1 300 -IN 2 +IN 3 300 + V- 4 8 NC 7 V+ 6 OUT 5 NC Pin Descriptions NAME PIN NUMBER DESCRIPTION NC 1, 5, 8 No Connection -IN 2 Inverting Input +IN 3 Non-Inverting Input V- 4 Negative Supply OUT 6 Output V+ 7 Positive Supply Features • User Programmable for Closed-Loop Gains of +1, -1 or +2 without Use of External Resistors • Wide -3dB Bandwidth.
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850MHz • Very Fast Slew Rate.
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2400V/s • Fast Settling Time (0.
1%).
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11ns • High Output Current .
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60mA • Excellent Gain Accuracy .
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99V/V • Overdrive Recovery .
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