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LMH6657 Datasheet

  • LMH6657

  • 270MHz Single Supply, Single & Dual Amplifiers

  • 20頁(yè)

  • NSC

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LMH6657/LMH6658 270MHz Single Supply, Single & Dual Amplifiers
October 2004
LMH6657/LMH6658
270MHz Single Supply, Single & Dual Amplifiers
General Description
The LMH6657/6658 are low-cost operational amplifiers that
operate from a single supply with input voltage range ex-
tending below the V
鈭?/div>
. Based on easy to use voltage feed-
back topology and boasting fast slew rate (700V/碌s) and
high speed (140MHz GBWP), the LMH6657 (Single) and
LMH6658 (dual) can be used in high speed large signal
applications. These applications include instrumentation,
communication devices, set-top boxes, etc.
With a -3dB BW of 100MHz (A
V
= +2) and DG & DP of 0.03%
& 0.10藲 respectively, the LMH6657/6658 are well suited for
video applications. The output stage can typically supply
80mA into the load with a swing of about 1V from either rail.
For Industrial applications, the LMH6657/6658 are excellent
cost-saving choices. Input referred voltage noise is low and
the input voltage can extend below V
鈭?/div>
to ease amplification
of low level signals that could be at or near the system
ground. With low distortion and fast settling, LMH6657/6658
can provide buffering for A/D and D/A applications.
The LMH6657/6658 versatility and ease of use is extended
even further by offering these high slew rate , high speed Op
Amps in miniature packages such as SOT23-5, SC70,
SOIC-8, and MSOP-8. Refer to the Ordering Information
section for packaging options available for each device.
Features
V
S
= 5V, T
A
= 25藲C, R
L
= 100鈩?(Typical values unless
specified)
n
鈭?dB BW (A
V
= +1)
270MHz
n
Supply voltage range
3V to 12V
鹵
5V)
n
Slew rate, (V
S
=
700V/碌s
n
Supply current
6.2mA/amp
n
Output current
+80/鈭?0mA
n
Input common mode volt. 0.5V beyond V
鈭?/div>
, 1.7V from V
+
n
Output voltage swing (R
L
= 2k鈩?
0.8V from rails
n
Input voltage noise
11nV/
n
Input current noise
2.1pA/
n
DG error
0.03%
n
DP error
0.10藲
n
THD (5MHz)
鈭?5dBc
n
Settling time (0.1%)
37ns
n
Fully characterized for 5V, and
鹵
5V
n
Output overdrive recovery
18ns
n
Output short circuit protected (Note 10)
n
No output phase reversal with CMVR exceeded
Applications
n
n
n
n
n
CD/DVD ROM
ADC buffer amp
Portable video
Current sense buffer
Portable communications
Connection Diagrams
SOT23-5/SC70-5 (LMH6657)
SOIC-8/MSOP-8 (LMH6658)
20053261
Top View
20053263
漏 2004 National Semiconductor Corporation
DS200532
www.national.com

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