Texas Instruments LM6144AIM/NOPB

Overview

LM6144AIM/NOPB from Texas Instruments is a quad rail-to-rail input-output operational amplifier optimized for low-voltage, battery-powered instrumentation. It delivers 17 MHz gain-bandwidth at 50 kHz, 30 V/μs slew rate, 650 μA/amplifier quiescent current, ±4000 V HBM ESD rating, and operates from 2.7 V to 24 V supply. It enables high-precision signal conditioning in depth sounders and barcode scanners where full dynamic range and low power are critical.

For engineers reviewing the LM6144AIM/NOPB datasheet, LM6144AIM/NOPB pinout, LM6144AIM/NOPB application, or LM6144AIM/NOPB equivalent, key selection considerations include its rail-to-rail input CMVR (−0.25 V to 5.25 V at 5 V), output swing within 30 mV of rails (RL = 100 kΩ), 107 dB CMRR, 87 dB PSRR, and guaranteed operation across −40°C to +85°C ambient temperature.

Technical Context

The LM6144AIM/NOPB employs a patented dual-input-stage architecture-combining NPN and PNP differential pairs-to achieve true rail-to-rail input common-mode voltage range beyond the supply rails (e.g., −0.25 V to 5.25 V at VS = 5 V). This eliminates input clipping concerns in single-supply systems with wide-swing sensor signals.

Its output stage uses slew-boosted architecture (confirmed in revision F die update) to sustain 30 V/μs slew rate while maintaining stability into capacitive loads up to 1000 pF-enabling direct ADC buffering without external isolation components. The device maintains ≥100 dB open-loop gain (RL = 10 kΩ) and 38° phase margin at unity gain, ensuring robust closed-loop performance.

Key Specifications

Pinout & Package

LM6144AIM/NOPB is housed in a 14-pin SOIC (D package) with 8.65 mm × 3.91 mm body size and standard JEDEC MS-012AC footprint. Pin 1 is marked with a dot or beveled corner; pins are numbered counter-clockwise from pin 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.

Compared with TLV2464IDR and OPA4340UA, LM6144AIM/NOPB uniquely combines extended rail-to-rail input (beyond supplies), 17 MHz GBW, and 30 V/μs slew rate in a 14-pin SOIC-making it irreplaceable in battery-powered, wide-dynamic-range pulse and RF envelope applications where input headroom and transient fidelity are non-negotiable.

Availability

LM6144AIM/NOPB is available at Aetrix Electronics and suitable for depth sounders, barcode scanners, portable test equipment, and single-supply instrumentation amplifiers requiring stable component supply, long-term lifecycle support, and guaranteed TI original packaging.

Supply support for LM6144AIM/NOPB 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of op amp innovation and manufacturing excellence.

The LM614x family was designed specifically for battery-powered, single-supply precision signal conditioning-targeting instrumentation, sensing, and portable communications where rail-to-rail operation, low power, and high speed must coexist.

FAQ

What is the absolute maximum supply voltage for LM6144AIM/NOPB?

The absolute maximum supply voltage for LM6144AIM/NOPB is 33 V, as specified in Section 5.1 of the SNOS726E datasheet. Operation beyond this rating-even momentarily-may cause permanent damage. Recommended operating range remains 2.7 V to 24 V, and the device is characterized for performance across that full span. Always observe derating guidelines for thermal management at high VS.

Does LM6144AIM/NOPB support rail-to-rail input beyond the supply rails?

Yes, LM6144AIM/NOPB supports a common-mode input voltage range extending 0.25 V beyond both supply rails-for example, −0.25 V to 5.25 V when VS = 5 V. This extended CMVR is enabled by its patented dual-input-stage topology and is explicitly confirmed in the Features and Electrical Characteristics sections of the datasheet. It eliminates the need for external level-shifting circuits in sensor interfaces.

What is the typical output voltage swing for LM6144AIM/NOPB at 5 V supply?

At VS = 5 V and RL = 100 kΩ, the typical output voltage swing for LM6144AIM/NOPB is within 30 mV of the positive rail and 45 mV of the negative rail. This rail-to-rail output capability is maintained across temperature (−40°C to +85°C) and load conditions, delivering >99% of full-scale dynamic range-critical for maximizing ADC utilization in low-voltage systems.

Is LM6144AIM/NOPB suitable for driving capacitive loads like ADC inputs?

Yes, LM6144AIM/NOPB is explicitly characterized for stable operation into capacitive loads up to 1000 pF, thanks to its slew-boosted output architecture. The datasheet confirms no oscillation under these conditions, making it ideal for direct connection to SAR and sigma-delta ADC inputs without series isolation resistors-simplifying layout and preserving signal integrity in portable test equipment.

What is the ESD rating of LM6144AIM/NOPB, and how does it impact board design?

LM6144AIM/NOPB has a ±4000 V Human-Body Model (HBM) ESD rating per ANSI/ESDA/JEDEC JS-001. This high tolerance allows safe handling and assembly in standard electrostatic-controlled environments without requiring additional input protection diodes-reducing component count, PCB area, and potential signal distortion in high-impedance sensor paths used in barcode scanners and depth sounders.