LTC1049_15 Datasheet, PDF (1/12 Pages) Linear Technology – Low Power Zero-Drift Operational Amplifier with Internal Capacitors

Features
n _{Low Supply Current: 200µA}
n _{No External Components Required}
n _{Maximum Offset Voltage: 10µV}
n _{Maximum Offset Voltage Drift: 0.1µV/°C}
n _{Single Supply Operation: 4.75V to 16V}
n _{Input Common Mode Range Includes Ground}
n _{Output Swings to Ground}
n _{Typical Overload Recovery Time: 6ms}
n _{Available in 8-Pin SO and PDIP Packages}
Applications
n _{4mA to 20mA Current Loops}
n _{Thermocouple Amplifiers}
n _{Electronic Scales}
n _{Medical Instrumentation}
n _{Strain Gauge Amplifiers}
n _{High Resolution Data Acquisition}
LTC1049
Low Power Zero-Drift
Operational Amplifier
with Internal Capacitors
Description
The LTC^®1049 is a high performance, low power zero-drift
operational amplifier. The two sample-and-hold capacitors
usually required externally by other chopper stabilized
amplifiers are integrated on the chip. Further, the LTC1049
offers superior DC and AC performance with a nominal
supply current of only 200µA.
The LTC1049 has a typical offset voltage of 2µV, drift of
0.02µV/°C, 0.1Hz to 10Hz input noise voltage of 3µV_P-P
and typical voltage gain of 160dB. The slew rate is 0.8V/µs
with a gain bandwidth product of 0.8MHz.
Overload recovery time from a saturation condition is
6ms, a significant improvement over chopper amplifiers
using external capacitors.
The LTC1049 is available in a standard 8-pin plastic dual
in line, as well as an 8-pin SO package. The LTC1049 can
be a plug-in replacement for most standard op amps with
improved DC performance and substantial power savings.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Typical Application
V_IN = 5V
Single Supply Thermocouple Amplifier
0.068µF
246k
1k
2
K
7
–
+
LT^®1025A
GND R^–
45
TYPE K
2_– ⁷
LTC1049
6
V_OUT = 0V TO 4V
3₊
FOR 0°C TO 400°C
4
0.1µF
SUPPLY CURRENT = 280µA
LTC1049 • TA01
1049fb
1