LTC1151
Dual ±15V Zero-Drift
Operational Amplifier
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FEATURES
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DESCRIPTIO
The LTC®1151 is a high voltage, high performance dual
zero-drift operational amplifier. The two sample-and-hold
capacitors per amplifier required externally by other chopper amplifiers are integrated on-chip. The LTC1151 also
incorporates proprietary high voltage CMOS structures
which allow operation at up to 36V total supply voltage.
Maximum Offset Voltage Drift: 0.05µV/°C
High Voltage Operation: ±18V
No External Components Required
Maximum Offset Voltage: 5µV
Low Noise: 1.5µVP-P (0.1Hz to 10Hz)
Minimum Voltage Gain: 125dB
Minimum CMRR: 106dB
Minimum PSRR: 110dB
Low Supply Current: 0.9mA/Amplifier
Single Supply Operation: 4.75V to 36V
Input Common Mode Range Includes Ground
Typical Overload Recovery Time: 20ms
Available in 8-Lead N8 and 16-Lead SW Packages
The LTC1151 has a typical offset voltage of 0.5µV,
drift of 0.01µV/°C, 0.1Hz to 10Hz input noise voltage of
1.5µVP-P, and a typical voltage gain of 140dB. It has a slew
rate of 3V/µs and a gain-bandwidth product of 2.5MHz
with a supply current of 0.9mA per amplifier. Overload
recovery times from positive and negative saturation are
3ms and 20ms, respectively.
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APPLICATIO S
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Strain Gauge Amplifiers
Instrumentation Amplifiers
Electronic Scales
Medical Instrumentation
Thermocouple Amplifiers
High Resolution Data Acquisition
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
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The LTC1151 is available in a standard 8-lead plastic DIP
package as well as a 16-lead wide body SO. The LTC1151
is pin compatible with industry-standard dual op amps
and runs from standard ±15V supplies, allowing it to plug
in to most standard bipolar op amp sockets while offering
significant improvement in DC performance.
TYPICAL APPLICATIO
±15V Dual Thermocouple Amplifier
51Ω 100Ω*
240k
Noise Spectrum
15V
60
6
15V
–
VIN K 7
+
LT1025
3
VO
GND
4
R–
5
2k
5
–
8
1/2
LTC1151
7
OUTPUT A
100mV/°C
+
240k
51Ω 100Ω*
2
–15V
–
+
40
30
20
10
TYPE K
470k
NOISE VOLTAGE (nV/√Hz)
50
0.1µF
0.1µF
2k
3
0
0.1µF
–
1/2
LTC1151
+
1
OUTPUT B
100mV/°C
1
10
100
1k
FREQUENCY (Hz)
10k
1151 TA02
4
0.1µF
TYPE K
* FULL SCALE TRIM: TRIM FOR 10.0V OUTPUT
WITH THERMOCOUPLE AT 100°C
–15V
1151 TA01
1151fa
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