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LMH6645

更新时间： 2024-11-24 11:12:39
品牌 Logo 应用领域
德州仪器 - TI 放大器
页数 文件大小 规格书
42页 2193K
描述
单通道 2.7V 650µA 55MHz 轨到轨输入和输出放大器

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LMH6645 数据手册

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LMH6645, LMH6646, LMH6647  
SNOS970D –JUNE 2001–REVISED NOVEMBER 2014  
LMH664x 2.7 V, 650 μA, 55 MHz, Rail-to-Rail Input and Output Amplifiers  
with Shutdown Option  
1 Features  
3 Description  
•
(VS = 2.7V, TA = 25°C, RL = 1kΩ to V+/2, AV = +1.  
The LMH6645 (single) and LMH6646 (dual), rail-to-  
rail input and output voltage feedback amplifiers, offer  
high speed (55 MHz), and low voltage operation (2.7  
V) in addition to micro-power shutdown capability  
(LMH6647, single).  
1
Typical Values Unless Specified.  
•
•
•
•
•
•
•
•
•
•
−3dB BW 55 MHz  
Supply Voltage Range 2.5 V to 12 V  
Slew Rate 22 V/μs  
Input common mode voltage range exceeds either  
supply by 0.3 V, enhancing ease of use in multitude  
of applications where previously only inferior devices  
could be used. Output voltage range extends to  
within 20 mV of either supply rails, allowing wide  
dynamic range especially in low voltage applications.  
Even with low supply current of 650 μA/amplifier,  
output current capability is kept at a respectable ±20  
mA for driving heavier loads. Important device  
parameters such as BW, Slew Rate and output  
current are kept relatively independent of the  
operating supply voltage by a combination of process  
enhancements and design architecture.  
Supply Current 650 μA/channel  
Output Short Circuit Current 42 mA  
Linear Output Current ±20 mA  
Input Common Mode Voltage 0.3 V Beyond Rails  
Output Voltage Swing 20 mV from Rails  
Input Voltage Noise 17 nV/√Hz  
Input Current Noise 0.75 pA/√Hz  
2 Applications  
•
•
•
•
•
Active Filters  
Device Information(1)  
High Speed Portable Devices  
Multiplexing Applications (LMH6647)  
Current Sense Buffer  
PART NUMBER  
PACKAGE  
SOT-23 (5)  
SOIC (8)  
BODY SIZE (NOM)  
2.90 mm × 1.60 mm  
4.90 mm × 3.91 mm  
4.90 mm × 3.91 mm  
3.00 mm × 3.00 mm  
2.92 mm × 1.60 mm  
4.90 mm × 3.91 mm  
LMH6645  
High Speed Transducer Amp  
SOIC (8)  
LMH6646  
LMH6647  
VSSOP (8)  
SOT-23 (6)  
SOIC (8)  
(1) For all available packages, see the orderable addendum at  
the end of the datasheet.  
Closed Loop Frequency Response  
for Various Temperature  
Frequency Response for Various AV  
A
= +2  
V
GAIN  
A
= +1  
V
0
-2  
-4  
GAIN  
85°C  
0
-2  
-4  
25°C  
A
= +10  
V
0
0
PHASE  
50  
PHASE  
50  
100  
100  
A
= +5  
V
-40°C  
1M  
10M  
Frequency (Hz)  
200M  
100k  
100M 200M  
100k  
1M  
10M  
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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