Features

• 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: 2.5μV_P-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

Typical Application

Description

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).