LT1366/LT1367
LT1368/LT1369
Dual and Quad Precision
Rail-to-Rail Input and Output
Op Amps
FEATURES
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DESCRIPTION
The LT
廬
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
鹵15V
supplies. Input offset voltage is typically 150碌V, 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 0.1碌F output capacitor, which improves the
amplifier鈥檚 supply rejection and reduces output imped-
ance at high frequencies. The output capacitor鈥檚 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.
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Input Offset Voltage: 150碌V
High Common Mode Rejection Ratio: 90dB
High A
VOL
: >1V/碌V Driving 10k鈩?Load
Low Input Bias Current: 10nA
Wide Supply Range: 1.8V to
鹵15V
Low Supply Current: 375碌A per Amplifier
High Output Drive: 30mA
400kHz Gain-Bandwidth Product
Slew Rate: 0.13V/碌s
Stable for Capacitive Loads up to 1000pF
APPLICATIONS
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Rail-to-Rail Buffer Amplifiers
Low Voltage Signal Processing
Supply Current Sensing at Either Rail
Driving A/D Converters
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Positive Supply Rail Current Sense
V
CC
R1
200鈩?/div>
Output Saturation Voltage vs Load Current
1000
SATURATION VOLTAGE (mV)
錚
OUT
鈥?V
S
錚?/div>
100
Rs
0.2鈩?/div>
鈥?/div>
1/2 LT1366
鈥?/div>
Q1
TP0610L
1/2 LT1366
+
I
LOAD
LOAD
R2
20k
+
R2
V
O
= I
LOAD
鈥?R
S
R1
= I
LOAD
鈥?20鈩?/div>
( )
10
1366 TA01
1
0.001
U
U
U
POSITIVE
RAIL
NEGATIVE
RAIL
0.01
0.1
1
LOAD CURRENT (mA)
10
1366 TA02
1
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