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LMH6642Q-Q1, LMH6643Q-Q1
SNOSC61C –JANUARY 2012–REVISED SEPTEMBER 2014
LMH6642Q/LMH6643Q Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers
1 Features
2 Applications
1
•
(VS = ±5 V, TA = 25°C, RL = 2 kΩ, AV = +1.
Typical Values Unless Specified).
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Active Filters
CD/DVD ROM
ADC Buffer Amp
Portable Video
Current Sense Buffer
Automotive
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−3dB BW (AV = +1) 130 MHz
Supply Voltage Range 2.7 V to 10 V
Slew Rate, (AV = −1) 130V/µs(1)
Supply Current (no load) 2.7 mA/amp
Output Short Circuit Current +115 mA/−145 mA
Linear Output Current ±75mA
3 Description
Input Common Mode Voltage 0.5V Beyond V−, 1V
The LMH664X family true single supply voltage
feedback amplifiers offer high speed (130 MHz), low
distortion (−62 dBc), and exceptionally high output
current (approximately 75 mA) at low cost and with
reduced power consumption when compared against
existing devices with similar performance.
from V+
•
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Output Voltage Swing 40mV from Rails
Input Voltage Noise (100kHz) 17nV/√Hz
Input Current Noise (100kHz) 0.9pA/√Hz
Input common mode voltage range extends to 0.5 V
below V− and 1 V from V+. Output voltage range
extends to within 40mV of either supply rail, allowing
wide dynamic range especially desirable in low
voltage applications. The output stage is capable of
approximately 75 mA in order to drive heavy loads.
Fast output Slew Rate (130 V/µs) ensures large
peak-to-peak output swings can be maintained even
at higher speeds, resulting in exceptional full power
bandwidth of 40 MHz with a 3-V supply. These
characteristics, along with low cost, are ideal features
THD (5MHz, RL = 2 kΩ, VO = 2VPP, AV = +2) −62
dBc
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Settling Time 68ns
Fully Characterized for 3 V, 5 V, and ±5 V
Overdrive Recovery 100ns
Output Short Circuit Protected(2)
No Output Phase Reversal with CMVR Exceeded
LMH6643QMM and LMH6642QMF are AEC-Q100
Grade 3 Qualified and are Manufactured on an
Automotive Grade Flow
for
a
multitude of industrial and commercial
applications.
(1) Slew rate is the average of the rising and falling slew rates
(2) Output short circuit duration is infinite for VS < 6 V at room
temperature and below. For VS > 6 V, allowable short circuit
duration is 1.5 ms.
Device Information(1)
PART NUMBER
LMH6642-Q1
PACKAGE
SOT-23 (5)
VSSOP (8)
BODY SIZE (NOM)
2.90 mm × 1.60 mm
3.00 mm × 3.00 mm
LMH6643-Q1
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Closed Loop Gain vs. Frequency for Various Gain
Large Signal Frequency Response
8.0
+3
±2.5V
V
= ±1.5V
= 2k
S
A
V
= +1
6.0
+2
+1
0
2V
PP
R
L
±5V
4.0
V
= 0.2V
PP
OUT
4V
PP
2.0
0.0
-1
-2
-3
A
V
= +10
A
= +5
V
A
= +2
V
R
= R = 2k
L
F
A
= +2
V
100k
1M
10M
200M
10k
100k
1M
10M
100M 500M
FREQUENCY (Hz)
FREQUENCY (Hz)
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.