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LMH6643Q-Q1

更新时间： 2024-11-27 00:59:19
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德州仪器 - TI /
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34页 1447K
描述
Low Power, 130 MHz, 75 mA Rail-to-Rail Output Amplifiers

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Sample &  
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Community  
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Technical  
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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).  
•
•
•
•
•
•
Active Filters  
CD/DVD ROM  
ADC Buffer Amp  
Portable Video  
Current Sense Buffer  
Automotive  
•
•
•
•
•
•
•
−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+  
•
•
•
•
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  
•
•
•
•
•
•
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.  
 
 
 
 
 
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