LTC2053 Datasheet, PDF (1/12 Pages) Linear Technology – Precision, Rail-to-Rail Input and Output, Zero-Drift Instrumentation Amplifier with Resistor-Programmable Gain

LTC2053
Precision, Rail-to-Rail
Input and Output, Zero-Drift Instrumentation
Amplifier with Resistor-Programmable Gain
FEATURES
s _{116dB CMRR Independent of Gain}
s _{Maximum Offset Voltage: 10µV}
s _{Maximum Offset Voltage Drift: 50nV/°C}
s _{Rail-to-Rail Input}
s _{Rail-to-Rail Output}
s _{2-Resistor Programmable Gain}
s _{Supply Operation: 2.7V to ±5.5V}
s _{Typical Noise: 2.5µVP-P (0.01Hz to 10Hz)}
s _{Typical Supply Current: 750µA}
s _{Available in an MS8 and 3mm × 3mm × 0.8mm}
DFN Packages
U
APPLICATIO S
s _{Thermocouple Amplifiers}
s _{Electronic Scales}
s _{Medical Instrumentation}
s _{Strain Gauge Amplifiers}
s _{High Resolution Data Acquisition}
TYPICAL APPLICATIO
Differential Bridge Amplifier
3V
0.1µF
R < 10k
8
2_–
LTC2053
3₊
5
1, 4
7
6
R2 10k
0.1µF
R1
10Ω
OUT
R2
GAIN = 1+
R1
2053 TA01
DESCRIPTIO
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
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
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).
, LTC and LT are registered trademarks of Linear Technology Corporation.
Typical Input Referred Offset vs Input
Common Mode Voltage (V_S = 3V)
15
V_S = 3V
V_REF = 0V
10 TA = 25°C
5
0
–5
–10
–15
0
G = 1000
G = 100
G = 10
G=1
0.5 1.0 1.5 2.0 2.5 3.0
INPUT COMMON MODE VOLTAGE (V)
2053 G01
2053fa
1