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LTC6246IS6TRMPBF

Description
180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps
File Size475KB,24 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
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LTC6246IS6TRMPBF Overview

180MHz, 1mA Power Efficient Rail-to-Rail I/O Op Amps

FeaTures
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LTC6246/LTC6247/LTC6248
180MHz, 1mA Power
Efficient Rail-to-Rail
I/O Op Amps
DescripTion
The LTC
®
6246/LTC6247/LTC6248 are single/dual/quad low
power, high speed unity gain stable rail-to-rail input/output
operational amplifiers. On only 1mA of supply current they
feature an impressive 180MHz gain-bandwidth product,
90V/µs slew rate and a low 4.2nV/√Hz of input-referred
noise. The combination of high bandwidth, high slew rate,
low power consumption and low broadband noise makes
these amplifiers unique among rail-to-rail input/output op
amps with similar supply currents. They are ideal for lower
supply voltage high speed signal conditioning systems.
The LTC6246 family maintains high efficiency performance
from supply voltage levels of 2.5V to 5.25V and is fully
specified at supplies of 2.7V and 5.0V.
For applications that require power-down, the LTC6246
and the LTC6247 in MS10 offer a shutdown pin which
disables the amplifier and reduces current consumption
to 42µA.
The LTC6246 family can be used as a plug-in replacement
for many commercially available op amps to reduce power
or to improve input/output range and performance.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Gain Bandwidth Product: 180MHz
–3dB Frequency (A
V
= 1): 120MHz
Low Quiescent Current: 1mA Max
High Slew Rate: 90V/µs
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Broadband Voltage Noise: 4.2nV/√Hz
Power-Down Mode: 42μA
Fast Output Recovery
Supply Voltage Range: 2.5V to 5.25V
Input Offset Voltage: 0.5mV Max
Input Bias Current: 100nA
Large Output Current: 50mA
CMRR: 110dB
Open Loop Gain: 45V/mV
Operating Temperature Range: –40°C to 125°C
Single in 6-Pin TSOT-23
Dual in MS8, 2mm
×
2mm Thin DFN,TS0T-23, MS10
Quad in MS16
Low Voltage, High Frequency Signal Processing
Driving A/D Converters
Rail-to-Rail Buffer Amplifiers
Active Filters
Video Amplifiers
Fast Current Sensing Amplifiers
Battery Powered Equipment
applicaTions
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Typical applicaTion
Low Noise Low Distortion Gain = 2 ADC Driver
3.3V 2.5V
MAGNITUDE (dB)
3.3V
V
IN
0
–10
–20
–30
CS
SDO
SCK
OV
DD
624678 TA01a
350kHz FFT Driving ADC
f
IN
= 350.195kHz
f
SAMP
= 2.2Msps
SFDR = 82dB
SNR = 70dB
1024 POINT FFT
+
LTC6246
A
IN
499
1%
10pF
V
DD
V
REF
LTC2366
GND
–40
–50
–60
–70
–80
–90
–100
–110
0
200
400
600
800
FREQUENCY (kHz)
1000
624678 TA01b
499
1%
624678fa

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