LTC1151_15 Datasheet, PDF (1/12 Pages) Linear Technology – Dual 15V Zero-Drift Operational Amplifier

LTC1151
Dual ±15V Zero-Drift
Operational Amplifier
FEATURES
■ _{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}
U
APPLICATIO S
■ _{Strain Gauge Amplifiers}
■ _{Instrumentation Amplifiers}
■ _{Electronic Scales}
■ _{Medical Instrumentation}
■ _{Thermocouple Amplifiers}
■ _{High Resolution Data Acquisition}
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 chop-
per amplifiers are integrated on-chip. The LTC1151 also
incorporates proprietary high voltage CMOS structures
which allow operation at up to 36V total supply voltage.
The LTC1151 has a typical offset voltage of 0.5µV,
drift of 0.01µV/°C, 0.1Hz to 10Hz input noise voltage of
1.5µV_P-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.
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
±15V Dual Thermocouple Amplifier
51Ω 100Ω*
240k
15V
15V
V_{IN K} ⁷
LT1025
V_O ³
GND R^–
45
470k
–+
TYPE K
0.1µF
6_– 8
1/2
7
2k
LTC1151
5₊
51Ω 100Ω*
240k
–15V
–+
2_–
0.1µF
1/2
1
2k
LTC1151
3₊
4
TYPE K
* FULL SCALE TRIM: TRIM FOR 10.0V OUTPUT
WITH THERMOCOUPLE AT 100°C
–15V
0.1µF
0.1µF
OUTPUT A
100mV/°C
OUTPUT B
100mV/°C
1151 TA01
Noise Spectrum
60
50
40
30
20
10
0
1
10
100
1k
10k
FREQUENCY (Hz)
1151 TA02
1151fa
1