Analog Devices Inc. LT1112S8#TRPBF

LT1112S8#TRPBF Dual Precision Op Amp Product Introduction

The LT1112S8#TRPBF from Analog Devices Inc. is a precision dual operational amplifier designed for applications requiring exceptional low input bias currents and minimal offset voltages, with the added benefits of low power consumption. Featuring two independent amplifier circuits in an SO-8 surface mount package, the LT1112S8#TRPBF stands out as a versatile device for both new designs and cost-sensitive legacy systems that cannot compromise precision.

The LT1112 series was developed to set new benchmarks in the low power precision op amp class, targeting critical analog front-end applications in instrumentation, sensor interfacing, and battery-powered measurement systems. Selection engineers and procurement professionals will find this device particularly attractive due to its combination of superior matching specifications, robust temperature range, and ease of assembly in automated environments.

Highlighting Main Characteristics and Benefits of LT1112S8#TRPBF

The LT1112S8#TRPBF distinguishes itself with a series of features that directly address common engineering challenges in high-input-impedance and low-drift systems:

Ultra-low input offset voltage: As low as 60 μV (prime grade) and 75 μV (standard grade), minimizing the need for external trim and calibration in sensitive circuitry.

Outstanding input bias current: Typical values down to 90 pA, allowing direct interfacing to high-impedance signal sources such as thermocouples or photodiodes.

Robust CMRR and PSRR: With common mode rejection ratio and power supply rejection ratios minimum of 120 dB and 116 dB respectively, the LT1112S8#TRPBF ensures stable operation even with fluctuating supply or input conditions.

Low power operation: Each amplifier channel can operate with a quiescent current of just 370 μA (typ.), supporting extended battery lifetime or reduced system-level power consumption.

Configurability at low voltages: Fully specified down to ±1 V supply rails, compatible with battery-powered or energy-harvesting systems.

Guaranteed matching specifications: The product offers tight parameter matching between its dual amplifiers, a critical factor for instrumentation amplifiers and other multichannel applications.

LT1112S8#TRPBF Technical and Performance Data

To facilitate technical evaluation and system performance modeling, the LT1112S8#TRPBF provides several important parameters:

Number of Channels: 2 (dual op amp in one package)

Supply Voltage Range: ±1 V to ±20 V (minimum 2.7 V single supply)

Input Offset Voltage: 60–135 μV (max. depends on grade and conditions)

Input Bias Current: Typical 90 pA, maximum 500 pA (temperature dependent)

Supply Current (per amplifier): Typical 370 μA, maximum 510 μA

Gain Bandwidth Product: 450–750 kHz typ.

Slew Rate: 0.27 V/μs typ.

Large Signal Voltage Gain: 700–4000 V/mV

Output Voltage Swing: Up to ±13.9 V with 10 kΩ load

Operating Temperature Range: –40°C to +85°C (industrial grade)

These characteristics position the LT1112S8#TRPBF as an ideal choice for signal conditioning applications that require both precision and efficiency. For engineers considering power-up stability, the device demonstrates minimal offset changes on warm-up or over long-term operation, as evidenced by representative data from the characterization curves.

Use Cases of LT1112S8#TRPBF in Contemporary Applications

The precise performance and robust matching of the LT1112S8#TRPBF enable its deployment in a variety of demanding scenarios:

Instrumentation amplifiers for medical and scientific instrumentation, where microvolt-level signal fidelity is essential.

Thermocouple, RTD, or bridge sensor front ends, benefiting from picoamp input bias currents and low offset voltage.

Battery-powered measurement or data logging systems, thanks to the device’s low quiescent current and wide voltage supply range.

Low-frequency and DC-accurate active filter applications in industrial control.

Photodiode amplifiers and other high source impedance signal chains, as the low input bias current preserves measurement integrity.

The availability of guaranteed specifications at low supply voltages is particularly beneficial in compact, energy-conscious devices such as portable patient monitors or remote environmental sensors.

LT1112S8#TRPBF Packaging, Pin Configuration, and Environmental Standards

LT1112S8#TRPBF is supplied in a standard 8-lead SOIC (Small Outline Integrated Circuit) package, with a body width of 3.90 mm, facilitating automated assembly and high-density board layouts. The surface mount package supports modern soldering and reflow processes, increasing compatibility with pick-and-place lines.

From a regulatory and compliance perspective, the LT1112S8#TRPBF is RoHS3 compliant and classified as Moisture Sensitivity Level 1 (unlimited – suitable for all assembly processes). It is also REACH unaffected and is covered under HTSUS 8542.33.0001 and ECCN EAR99 for export classification, simplifying the supply chain for global manufacturing.

Alternative and Substitute Models for LT1112S8#TRPBF

Engineers and procurement teams may encounter scenarios where cross-referencing functionally similar parts is essential—whether for design flexibility, supply chain robustness, or multi-sourcing.

Potential equivalents to the LT1112S8#TRPBF, considering form, fit, and function, include:

LT1112CN8/LT1112IN8: Dual op amps in PDIP format from the same Analog Devices/Linear Technology family, suitable for through-hole designs requiring the same electrical performance.

LT1112IS8: Industrial temperature-rated version in SOP-8 package, for harsher environments.

LT1114S: Quad version (four amplifiers) based on the same precision architecture, for multi-channel systems.

Competing general-purpose dual precision op amps (from other manufacturers) with comparable offset and bias current specifications, such as the Texas Instruments OPA2277 or the Microchip MCP6022, may also fulfill similar roles, though PCB and supply rail compatibility should always be verified.

For system maintenance and long-term sourcing, these alternatives can provide practical options should LT1112S8#TRPBF become supply-constrained or require footprint adaptation.

Conclusion

The LT1112S8#TRPBF from Analog Devices Inc. delivers a compelling solution for engineers seeking precision, low power, and robust dual operational amplifier performance in demanding signal conditioning, instrumentation, and battery-powered applications. Its carefully optimized characteristics—including low input bias, low offset, strong matching, and wide supply voltage–equip design teams to achieve accuracy and reliability while maintaining system efficiency.

Supplying broad compliance and packaging features familiar to automated manufacturing, LT1112S8#TRPBF aligns with both technical and logistical requirements, supported by a family of equivalent models for adaptable procurement strategies. For today’s high-precision analog systems, the LT1112S8#TRPBF stands as a future-oriented choice for cost-effective, reliable signal amplification.