LT1366/LT1367
LT1368/LT1369
Dual and Quad Precision
Rail-to-Rail Input and Output
Op Amps
Description
Features
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Input Offset Voltage: 150µV
High Common Mode Rejection Ratio: 90dB
High AVOL: >1V/µV Driving 10k Load
Low Input Bias Current: 10nA
Wide Supply Range: 1.8V to ±15V
Low Supply Current: 375µA per Amplifier
High Output Drive: 30mA
400kHz Gain-Bandwidth Product
Slew Rate: 0.13V/µs
Stable for Capacitive Loads Up to 1000pF
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 AVOL 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.
Applications
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n
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n
Rail-to-Rail Buffer Amplifiers
Low Voltage Signal Processing
Supply Current Sensing at Either Rail
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.
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.
Typical Application
Output Saturation Voltage vs Load Current
Positive Supply Rail Current Sense
VCC
1000
R1
200Ω
SATURATION VOLTAGE (mV)
VOUT – VS
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n
n
n
n
n
n
n
n
n
n
n
100
Rs
0.2Ω
–
–
Q1
TP0610L
1/2 LT1366
+
ILOAD
LOAD
R2
20k
1/2 LT1366
+
( )
R2
R1
= ILOAD • 20Ω
VO = ILOAD • RS
1366 TA01
POSITIVE
RAIL
NEGATIVE
RAIL
10
1
0.001
0.01
0.1
1
LOAD CURRENT (mA)
10
1366 TA02
1366fb
