LT1013/LT1014
Quad Precision Op Amp (LT1014)
Dual Precision Op Amp (LT1013)
U
DESCRIPTIO
FEATURES
TheLT®1014isthefirstprecisionquadoperationalamplifier
which directly upgrades designs in the industry standard
14-pinDIPLM324/LM348/OP-11/4156pinconfiguration.
It is no longer necessary to compromise specifications,
while saving board space and cost, as compared to single
operational amplifiers.
■
Single Supply Operation
Input Voltage Range Extends to Ground
Output Swings to Ground while Sinking Current
■
Pin Compatible to 1458 and 324 with Precision Specs
■
Guaranteed Offset Voltage: 150μV Max
■
Guaranteed Low Drift: 2μV/°C Max
■
Guaranteed Offset Current: 0.8nA Max
TheLT1014’slowoffsetvoltageof50μV, driftof0.3μV/°C,
offset current of 0.15nA, gain of 8 million, common mode
rejection of 117dB and power supply rejection of 120dB
qualify it as four truly precision operational amplifiers.
Particularly important is the low offset voltage, since no
offset null terminals are provided in the quad configura-
tion. Although supply current is only 350μA per amplifier,
a new output stage design sources and sinks in excess of
20mA of load current, while retaining high voltage gain.
■
Guaranteed High Gain
5mA Load Current: 1.5 Million Min
17mA Load Current: 0.8 Million Min
■
Guaranteed Low Supply Current: 500μA Max
■
Low Voltage Noise, 0.1Hz to 10Hz: 0.55μVp-p
Low Current Noise—Better than 0P-07, 0.07pA/√Hz
■
U
APPLICATIO S
Similarly, the LT1013 is the first precision dual op amp in
the 8-pin industry standard configuration, upgrading the
performance of such popular devices as the MC1458/
1558, LM158 and OP-221. The LT1013’s specifications
are similar to (even somewhat better than) the LT1014’s.
■
Battery-Powered Precision Instrumentation
Strain Gauge Signal Conditioners
Thermocouple Amplifiers
Instrumentation Amplifiers
■
4mA–20mA Current Loop Transmitters
■
Both the LT1013 and LT1014 can be operated off a single
5V power supply: input common mode range includes
ground;theoutputcanalsoswingtowithinafewmillivolts
of ground. Crossover distortion, so apparent on previous
single-supply designs, is eliminated. A full set of specifi-
cations is provided with ±15V and single 5V supplies.
Multiple Limit Threshold Detection
Active Filters
Multiple Gain Blocks
■
■
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
U
TYPICAL APPLICATIO
LT1014 Distribution of Offset Voltage
3 Channel Thermocouple Thermometer
4k
1M
700
V
T
=
±15V
3k
299k
S
A
+5V
= 25°C
+5V
600
500
400
300
200
100
0
425 LT1014s
(1700 OP AMPS)
TESTED FROM
THREE RUNS
J PACKAGE
4
LT1004
1.2V
2 –
YSI 44007
5kΩ
1684Ω
260Ω
1
OUTPUT A
AT 25°C
3 +LT1014
10mV/°C
12
+
11
14
LT1014
1.8k
4k
13
–
1M
6 –
7
USE TYPE K THERMOCOUPLES. ALL RESISTORS = 1% FILM.
COLD JUNCTION COMPENSATION ACCURATE
TO ±1°C FROM 0°C
USE 4TH AMPLIFIER FOR OUTPUT C.
OUTPUT B
10mV/°C
–300 –200 –100
0
100
200
300
5 +LT1014
INPUT OFFSET VOLTAGE (μV)
60°C.
1013/14 TA02
10134fc
1