Precision, Rail-to-Rail, Zero-Drift, Resistor-Programmable Instrumentation Amplifier

The LTC2053 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.

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.

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).

Applications

* Thermocouple Amplifiers

* Electronic Scales

* Medical Instrumentation

* Strain Gauge Amplifiers

* High Resolution Data Acquisition

* 116dB CMRR Independent of Gain

* Maximum Offset Voltage: 10μV

* Maximum Offset Voltage Drift: 50nV/°C

* Rail-to-Rail Input

* Rail-to-Rail Output

* 2-Resistor Programmable Gain

* Supply Operation: 2.7V to ±5.5V

* Typical Noise: 2.5μVP-P (0.01Hz to 10Hz)

* Typical Supply Current: 750μA

* LTC2053-SYNC Allows Synchronization to External Clock

* Available in MS8 and 3mm × 3mm × 0.8mm DFN Packages