LT1366_10 Datasheet, PDF (1/20 Pages) Linear Technology – Dual and Quad Precision Rail-to-Rail Input and Output Op Amps

LT1366/LT1367
LT1368/LT1369
Features
Dual and Quad Precision
Rail-to-Rail Input and Output
Op Amps
Description
n _{Input Common Mode Range Includes Both Rails}
n _{Output Swings Rail-to-Rail}
n _{Low Input Offset Voltage: 150µV}
n _{High Common Mode Rejection Ratio: 90dB}
n _{High AVOL: >1V/µV Driving 10k Load}
n _{Low Input Bias Current: 10nA}
n _{Wide Supply Range: 1.8V to ±15V}
n _{Low Supply Current: 375µA per Amplifier}
n _{High Output Drive: 30mA}
n _{400kHz Gain-Bandwidth Product}
n _{Slew Rate: 0.13V/µs}
n _{Stable for Capacitive Loads Up to 1000pF}
Applications
n _{Rail-to-Rail Buffer Amplifiers}
n _{Low Voltage Signal Processing}
n _{Supply Current Sensing at Either Rail}
n _{Driving A/D Converters}
L, LT, LTC, LTM, Over-The-Top, Linear Technology and the Linear logo are registered
trademarks and C-Load is a trademark of Linear Technology Corporation. All other trademarks
are the property of their respective owners.
The LT^®1366/LT1367/LT1368/LT1369 are dual and quad
bipolar op amps which combine rail-to-rail input and output
operation with precision specifications. These op amps
maintain their characteristics over a supply range of 1.8V
to 36V. Operation is specified for 3V, 5V and ±15V supplies.
Input offset voltage is typically 150µV, with an open-loop
gain A_VOL of 1 million while driving a 10k load. Common
mode rejection is typically 90dB over the full rail-to-rail
input range, and supply rejection is 110dB.
The LT1366/LT1367 have conventional compensation
which assures stability for capacitive loads of 1000pF or
less. The LT1368/LT1369 have compensation that requires
a 0.1µF output capacitor, which improves the amplifier’s
supply rejection and reduces output impedance at high
frequencies. The output capacitor’s filtering action reduces
high frequency noise, which is beneficial when driving
A/D converters.
The LT1366/LT1368 are available in plastic 8-pin PDIP
and 8-lead SO packages with the standard dual op amp
pinout. The LT1367/LT1369 feature the standard quad
pinout, which is available in a plastic 14-lead SO package.
These devices can be used as plug-in replacements for
many standard op amps to improve input/output range
and precision.
Typical Application
V_{CC R1}
200Ω
Positive Supply Rail Current Sense
Rs
0.2Ω
I_LOAD
LOAD
–
1/2 LT1366
+
R2
20k
Q1
TP0610L
–
1/2 LT1366
+
( ) ^{VO = ILOAD • RS}
R2
R1
= I_LOAD • 20Ω
1366 TA01
Output Saturation Voltage vs Load Current
1000
POSITIVE
100
RAIL
NEGATIVE
RAIL
10
1
0.001
0.01
0.1
1
LOAD CURRENT (mA)
10
1366 TA02
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