LMH6642MF National Semiconductor, LMH6642MF Datasheet
LMH6642MF
Manufacturer Part Number
LMH6642MF
Description
OPERATIONAL AMPLIFIER OP AMP IC
Manufacturer
National Semiconductor
Specifications of LMH6642MF
No. Of Amplifiers
1
Bandwidth
130MHz
Slew Rate
135V/µs
No. Of Pins
5
Peak Reflow Compatible (260 C)
No
Leaded Process Compatible
No
Mounting Type
Surface Mount
Package / Case
5-SOT-23
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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© 2006 National Semiconductor Corporation
LMH6642/LMH6643/LMH6644
Low Power, 130MHz, 75mA Rail-to-Rail Output Amplifiers
General Description
The LMH664X family true single supply voltage feedback
amplifiers offer high speed (130MHz), low distortion
(−62dBc), and exceptionally high output current (approxi-
mately 75mA) at low cost and with reduced power consump-
tion when compared against existing devices with similar
performance.
Input common mode voltage range extends to 0.5V below V
and 1V from V
40mV of either supply rail, allowing wide dynamic range
especially desirable in low voltage applications. The output
stage is capable of approximately 75mA in order to drive
heavy loads. Fast output Slew Rate (130V/µs) ensures large
peak-to-peak output swings can be maintained even at
higher speeds, resulting in exceptional full power bandwidth
of 40MHz with a 3V supply. These characteristics, along with
low cost, are ideal features for a multitude of industrial and
commercial applications.
Careful attention has been paid to ensure device stability
under all operating voltages and modes. The result is a very
well behaved frequency response characteristic (0.1dB gain
flatness up the 12MHz under 150Ω load and A
minimal peaking (typically 2dB maximum) for any gain set-
ting and under both heavy and light loads. This along with
fast settling time (68ns) and low distortion allows the device
to operate well in ADC buffer, and high frequency filter
applications as well as other applications.
This device family offers professional quality video perfor-
mance with low DG (0.01%) and DP (0.01˚) characteristics.
Differential Gain and Differential Phase characteristics are
also well maintained under heavy loads (150Ω) and through-
out the output voltage range. The LMH664X family is offered
Closed Loop Gain vs. Frequency for Various Gain
+
. Output voltage range extends to within
DS200185
20018535
V
= +2) with
−
in single (LMH6642), dual (LMH6643), and quad (LMH6644)
options. See ordering information for packages offered.
Features
(V
unless specified).
n −3dB BW (A
n Supply voltage range
n Slew rate (Note 8), (A
n Supply current (no load)
n Output short circuit current
n Linear output current
n Input common mode volt.
n Output voltage swing
n Input voltage noise (100kHz)
n Input current noise (100kHz)
n THD (5MHz, R
n Settling time
n Fully characterized for 3V, 5V, and
n Overdrive recovery
n Output short circuit protected (Note 11)
n No output phase reversal with CMVR exceeded
Applications
n Active filters
n CD/DVD ROM
n ADC buffer amp
n Portable video
n Current sense buffer
S
=
±
5V, T
Large Signal Frequency Response
A
V
= 25˚C, R
= +1)
L
= 2kΩ, V
V
L
= −1)
= 2kΩ, A
O
= 2V
0.5V beyond V
PP
V
, A
±
= +1. Typical values
5V
V
= +2)
+115mA/−145mA
40mV from rails
20018547
October 2006
2.7V to 12.8V
−
www.national.com
, 1V from V
2.7mA/amp
0.9pA/
17nV/
130MHz
130V/µs
−62dBc
±
100ns
75mA
68ns
+
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