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LTC6257_15

更新时间： 2024-11-14 01:11:23
品牌 Logo 应用领域
凌特 - Linear /
页数 文件大小 规格书
24页 466K
描述
6.5MHz, 65A Power Efficient Rail-to-Rail I/O Op Amps

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中文翻译

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LTC6257_15 数据手册

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LTC6255/LTC6256/LTC6257  
6.5MHz, 65µA Power  
Efficient Rail-to-Rail I/O  
Op Amps  
FeAtures  
Description  
n
Gain Bandwidth Product: 6.5MHz  
The LTC®6255/LTC6256/LTC6257 are single/dual/quad  
operational amplifiers with low noise, low power, low  
supply voltage, and rail-to-rail inputs and outputs. They  
are unity gain stable with capacitive load up to 100nF.  
They feature 6.5MHz gain-bandwidth product, 1.8V/µs  
slew rate while consuming only 65µA of supply current  
per amplifier operating on supply voltages ranging from  
1.8V to 5.25V. The combination of low supply current,  
low supply voltage, high gain bandwidth product and low  
noise makes the LTC6255 family unique among rail-to-rail  
input/output op amps with similar supply current. These  
operational amplifiers are ideal for low power and low  
noise applications.  
n
–3dB Bandwidth (A = +1): 4.5MHz  
V
n
n
n
n
n
n
n
n
n
n
n
Low Quiescent Current: 65µA  
Stable for Capacitive Load Up to 100nF  
Offset Voltage: 350µV Maximum  
Rail-to-Rail Input and Output  
Supply Voltage Range: 1.8V to 5.25V  
Input Bias Current: 50nA Maximum  
CMRR/PSRR: 100dB/100dB  
Shutdown Current: 7µA Maximum  
Operating Temperature Range: –40°C to 125°C  
Single in 6-Lead TSOT-23 Package  
Dual in 8-Lead MS8, MS10, TS0T-23, 2mm × 2mm  
Thin DFN Packages  
For applications that require power-down, the LTC6255  
and LTC6256 in S6 and MS10 packages offer shutdown  
whichreducesthecurrentconsumptionto7µAmaximum.  
n
Quad in MS16 Package  
ApplicAtions  
The LTC6255 family can be used as plug-in replacements  
formanycommerciallyavailableopampstoreducepower  
and improve input/output range and performance.  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and  
Over-The-Top is a trademark of Linear Technology Corporation. All other trademarks are the  
property of their respective owners.  
n
Micropower Active Filters  
n
Portable Instrumentation  
Battery or Solar Powered Systems  
n
n
Automotive Electronics  
typicAl ApplicAtion  
LTC6255 Driving LTC2361 ADC  
Low Power, Low Distortion ADC Driver  
0
V
S
= –1dBFS, 5kHz  
IN  
3.3V  
–10  
–20  
–30  
–40  
–50  
–60  
–70  
–80  
–90  
–100  
–110  
f
= 125kSps  
SNR = 72.5dB  
SFDR = 89dB  
3.3V  
t
t
= 5µs  
= 3µs  
ACQ  
CONV  
V
V
REF  
DD  
+
V
CS  
SDO  
SCK  
IN  
324Ω  
1%  
5mV TO 2V  
LTC6255  
LTC2361  
GND  
A
IN  
–
470pF  
NPO  
OV  
DD  
625567 TA01a  
6.34k, 1%  
22pF  
10k  
1%  
I
= 540µA TOTAL AT 125kSps  
SUPPLY  
0
10  
20  
30  
40  
50  
60  
FREQUENCY (kHz)  
625567 TA01b  
625567fb  
1
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