Analog Devices Inc. LTC2053IMS8#TRPBF

Overview

LTC2053IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a precision rail-to-rail, zero-drift instrumentation amplifier with resistor-programmable gain. It delivers 116dB CMRR independent of gain, ≤10µV input offset voltage, and <50nV/°C drift across –40°C to 85°C. Its 2.7V to ±5.5V supply range, 750µA quiescent current, and MS8 package make it ideal for high-accuracy thermocouple amplification in industrial sensor interfaces.

For engineers reviewing the LTC2053IMS8#TRPBF datasheet, LTC2053IMS8#TRPBF pinout, LTC2053IMS8#TRPBF application, or LTC2053IMS8#TRPBF equivalent, key selection criteria include guaranteed input offset drift over temperature, rail-to-rail input/output swing, internal sampling clock independence (no external clock required), and compatibility with single-supply 3V systems in space-constrained industrial designs.

Technical Context

The LTC2053IMS8#TRPBF employs charge-balanced sampled-data conversion to translate differential input voltage into a single-ended signal, which is then amplified by an internal zero-drift op amp. Its front-end uses switched-capacitor techniques with 3kHz internal sampling frequency and 1000pF sampling/hold capacitors (CS = CH).

This architecture enables rail-to-rail input common-mode operation (down to V– and up to V+) and rail-to-rail output swing (within 20mV of rails), while maintaining CMRR ≥100dB over full input common-mode range - independent of gain setting via external resistors R1/R2 on RG and REF pins.

Key Specifications

Pinout & Package

The LTC2053IMS8#TRPBF is housed in an 8-lead plastic MSOP (MS8) package, 3mm × 3mm footprint, 1.1mm max height, with exposed pad internally connected to V– for thermal and noise performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar instrumentation amplifier applications.

Compared with AD8421ARMZ and INA333AIDRGT, the LTC2053IMS8#TRPBF uniquely balances ultra-low offset drift (<50nV/°C), rail-to-rail operation at 2.7V, and integrated shutdown - making it optimal for high-precision, low-power industrial sensor nodes requiring long-term DC stability without calibration.

Availability

LTC2053IMS8#TRPBF is available at Aetrix Electronics and suitable for thermocouple amplifiers, electronic scales, medical instrumentation, and strain gauge amplifiers requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for LTC2053IMS8#TRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC2053 product line was developed by Linear Technology (acquired by ADI in 2017) specifically for ultra-precision DC-coupled sensor signal conditioning - targeting applications demanding nanovolt-level stability, rail-to-rail operation, and minimal calibration overhead.

FAQ

What is the maximum input common-mode voltage range for the LTC2053IMS8#TRPBF?

The LTC2053IMS8#TRPBF supports rail-to-rail input common-mode voltage: from V– to V+. With a 3V supply (V+ = 3V, V– = 0V), inputs operate from 0V to 3V; with ±5V supplies, inputs span –5V to +5V. However, differential input magnitude is constrained by V– ≤ (V+IN – V–IN) + VREF ≤ V+ – 1.3V to prevent internal node saturation.

Does the LTC2053IMS8#TRPBF require an external clock to operate?

No, the LTC2053IMS8#TRPBF does not require an external clock. It features an internal 3kHz sampling clock. Pin 1 is the active-low EN (enable) pin - not a clock input. The clock-enabled variant is the LTC2053IMS8-SYNC#TRPBF; using the standard LTC2053IMS8#TRPBF eliminates clock routing, jitter, and EMI concerns in noise-sensitive applications.

How is gain programmed on the LTC2053IMS8#TRPBF?

Gain is set externally using two resistors: R1 connects RG (pin 6) to REF (pin 5), and R2 connects RG to OUT (pin 7). Gain = 1 + R2/R1. For example, R1 = 1kΩ and R2 = 99kΩ yields G = 100. This resistor-programmable architecture avoids laser trimming, supports field-adjustable gain, and maintains 0.01% gain error across temperature.

What is the purpose of the REF pin (pin 5) on the LTC2053IMS8#TRPBF?

The REF pin (pin 5) sets the DC reference level of the single-ended output: V_OUT = G × (V_+IN – V_–IN) + V_REF. It can be tied to ground, mid-supply, or an external precision reference (e.g., LT1027) to shift output into the optimal range of a downstream ADC. V_REF must remain within |V_IN – V_REF| ≤ 5.5V to avoid damage or distortion.

Can the LTC2053IMS8#TRPBF operate from a single 3V supply in a thermocouple application?

Yes, the LTC2053IMS8#TRPBF operates from 2.7V to 6V single supply. In a 3V thermocouple setup, configure VREF = 0.1V (e.g., via resistor divider), use rail-to-rail inputs, and ensure the differential thermocouple voltage stays within the safe input window defined by V– ≤ (V+IN – V–IN) + VREF ≤ V+ – 1.3V. Output swings within 20mV of rails, fully utilizing the 3V ADC range.