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LTC2050/LTC2050HV
1
2050fc
TYPICAL APPLICATION
FEATURES
APPLICATIONS
DESCRIPTION
Zero-Drift
Operational Ampliers
in SOT-23
The LTC2050 and LTC2050HV are zero-drift operational
ampliers available in the 5- or 6-lead SOT-23 and SO-8
packages. The LTC2050 operates from a single 2.7V to
6V supply. The LTC2050HV operates on supplies from
2.7V to ±5.5V. The current consumption is 800μA and the
versions in the 6-lead SOT-23 and SO-8 packages offer
power shutdown (active low).
The LTC2050, despite its miniature size, features uncom-
promising DC performance. The typical input offset voltage
and offset drift are 0.5μV and 10nV/°C. The almost zero
DC offset and drift are supported with a power supply
rejection ratio (PSRR) and common mode rejection ratio
(CMRR) of more than 130dB.
The input common mode voltage ranges from the nega-
tive supply up to typically 1V from the positive supply.
The LTC2050 also has an enhanced output stage capable
of driving loads as low as 2kΩ to both supply rails. The
open-loop gain is typically 140dB. The LTC2050 also
features a 1.5μVP-P DC to 10Hz noise and a 3MHz gain
bandwidth product.
n Maximum Offset Voltage of 3μV
n Maximum Offset Voltage Drift of 30nV/°C
n Noise: 1.5μVP-P (0.01Hz to 10Hz Typ)
n Voltage Gain: 140dB (Typ)
n PSRR: 130dB (Typ)
n CMRR: 130dB (Typ)
n Supply Current: 0.8mA (Typ)
n Supply Operation: 2.7V to 6V (LTC2050)
2.7V to ±5.5V (LTC2050HV)
n Extended Common Mode Input Range
n Output Swings Rail-to-Rail
n Input Overload Recovery Time: 2ms (Typ)
n Operating Temperature Range: – 40°C to 125°C
n Low Proe (1mm) SOT-23 (ThinSOT) Package
n Thermocouple Ampliers
n Electronic Scales
n Medical Instrumentation
n Strain Gauge Ampliers
n High Resolution Data Acquisition
n DC Accurate RC Active Filters
n Low Side Current Sense
Input Referred Noise 0.1Hz to 10Hz
Differential Bridge Amplier
–
+
5V
0.1μF
18.2k
0.1μF
18.2k
5
1
2
3
4
0.1μF
5V
AV = 100
2050 TA01
350Ω
STRAIN
GAUGE
50Ω
GAIN
TRIM
LTC2050HV
–5V
2
1
0
–1
–2
(μV)
24
0
6
8
10
TIME (SEC)
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents, including
5481178.
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