LTC2053/LTC2053-SYNC
Precision, Rail-to-Rail,
Zero-Drift, Resistor-Programmable
Instrumentation Amplifier
Description
Features
116dB CMRR Independent of Gain
nn Maximum Offset Voltage: 10µV
nn Maximum Offset Voltage Drift: 50nV/°C
nn Rail-to-Rail Input
nn Rail-to-Rail Output
nn 2-Resistor Programmable Gain
nn Supply Operation: 2.7V to ±5.5V
nn Typical Noise: 2.5µV
P-P (0.01Hz to 10Hz)
nn Typical Supply Current: 750µA
nn LTC2053-SYNC Allows Synchronization to
External Clock
nn Available in MS8 and 3mm × 3mm × 0.8mm
DFN Packages
The LTC®2053 is a high precision instrumentation amplifier. The CMRR is typically 116dB with a single or dual
5V supply and is independent of gain. The input offset
voltage is guaranteed below 10µV with a temperature
drift of less than 50nV/°C. The LTC2053 is easy to use;
the gain is adjustable with two external resistors, like a
traditional op amp.
nn
The LTC2053 uses charge balanced sampled data techniques to convert a differential input voltage into a single
ended signal that is in turn amplified by a zero-drift operational amplifier.
The differential inputs operate from rail-to-rail and the
single-ended output swings from rail-to-rail. The LTC2053
can be used in single-supply applications, as low as 2.7V.
It can also be used with dual ±5.5V supplies. The LTC2053
requires no external clock, while the LTC2053-SYNC has
a CLK pin to synchronize to an external clock.
Applications
Thermocouple Amplifiers
Electronic Scales
nn Medical Instrumentation
nn Strain Gauge Amplifiers
nn High Resolution Data Acquisition
nn
nn
The LTC2053 is available in an MS8 surface mount package. For space limited applications, the LTC2053 is available in a 3mm × 3mm × 0.8mm dual fine pitch leadless
package (DFN).
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Typical Application
Typical Input Referred Offset vs Input
Common Mode Voltage (VS = 3V)
Differential Bridge Amplifier
15
3V
2
3
8
–
7
LTC2053
+
5
6
OUT
R2 10k
1, 4
GAIN = 1+
0.1µF
R1
10Ω
R2
R1
INPUT OFFSET VOLTAGE (µV)
0.1µF
R < 10k
VS = 3V
VREF = 0V
TA = 25°C
10
5
0
G = 1000
G = 100
–5
G = 10
–10
–15
2053 TA01
G=1
0
2.5
1.0
1.5
2.0
0.5
INPUT COMMON MODE VOLTAGE (V)
3.0
2053 TA01b
2053syncfd
For more information www.linear.com/LTC2053
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