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LTC2053/LTC2053-SYNC
1
2053syncfd
For more information www.linear.com/LTC2053
Typical applicaTion
FeaTures DescripTion
Precision, Rail-to-Rail,
Zero-Drift, Resistor-Programmable
Instrumentation Amplifier
The LTC
®
2053 is a high precision instrumentation ampli-
fier. 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.
The LTC2053 uses charge balanced sampled data tech
-
niques to convert a differential input voltage into a single
ended
signal that is in turn amplified by a zero-drift op-
erational 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.
The LTC2053 is available in an MS8 surface mount pack
-
age. For
space limited applications, the LTC2053 is avail-
able
in a 3mm × 3mm × 0.8mm dual fine pitch leadless
package (DFN).
Typical Input Referred Offset vs Input
Common Mode Voltage (V
S
= 3V)
applicaTions
n
116dB CMRR Independent of Gain
n
Maximum Offset Voltage: 10µV
n
Maximum Offset Voltage Drift: 50nV/°C
n
Rail-to-Rail Input
n
Rail-to-Rail Output
n
2-Resistor Programmable Gain
n
Supply Operation: 2.7V to ±5.5V
n
Typical Noise: 2.5µV
P-P
(0.01Hz to 10Hz)
n
Typical Supply Current: 750µA
n
LTC2053-SYNC Allows Synchronization to
External Clock
n
Available in MS8 and 3mm × 3mm × 0.8mm
DFN Packages
n
Thermocouple Amplifiers
n
Electronic Scales
n
Medical Instrumentation
n
Strain Gauge Amplifiers
n
High Resolution Data Acquisition
L, LT, LTC , LT M, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Differential Bridge Amplifier
+
–
LTC2053
2
3
7
8
0.1µF
3V
R < 10k
1, 4
5
6
R2 10k
2053 TA01
OUT
0.1µF
R1
10Ω
GAIN = 1+
R2
R1
INPUT COMMON MODE VOLTAGE (V)
0
INPUT OFFSET VOLTAGE (µV)
15
10
5
0
–5
–10
–15
0.5
1.0 1.5 2.0
2053 TA01b
2.5 3.0
V
S
= 3V
V
REF
= 0V
T
A
= 25°C
G = 1000
G = 100
G = 10
G = 1
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