Texas Instruments TLC1078IP

Overview

TLC1078IP from Texas Instruments is a dual-channel, ultra-low-power LinCMOS™ precision operational amplifier designed for battery-critical signal conditioning. It delivers 450 µV max input offset voltage (at 25°C), 0.6 pA typical input bias current, 47 V/ms typical slew rate, and operates down to 1.4 V supply-enabling single silver-oxide watch battery operation in portable medical sensors and low-voltage data acquisition systems.

For engineers reviewing the TLC1078IP datasheet, TLC1078IP pinout, TLC1078IP application, or TLC1078IP equivalent, key selection criteria include its rail-to-rail output swing, negative-rail common-mode input capability, 110-kHz unity-gain bandwidth, and –40°C to +85°C industrial temperature rating-critical for energy-harvesting interfaces and precision analog front-ends where quiescent current must stay below 34 µA per amplifier.

Technical Context

The TLC1078IP uses LinCMOS™ input stage architecture to achieve sub-picoampere input bias current and high open-loop gain (800,000 typ), enabling high-impedance sensor interfacing without significant DC error. Its internal ESD protection withstands 2000 V (MIL-PRF-38535, Method 3015.2) and latch-up immunity supports robust operation under transient surge currents up to 100 mA.

Designed for ultra-low-power precision, the device features input offset voltage drift of only 0.1 µV/month (including first 30 days) and maintains stable performance across its full –40°C to +85°C operating range, with input offset voltage specified at 950 µV max over temperature and supply rejection ratio of 75 dB minimum.

Key Specifications

Pinout & Package

Package: 8-pin plastic DIP (P package), through-hole mounting, JEDEC MS-001 compatible.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel precision op-amp applications.

Compared with TLC27L2IP, TLC1078IP delivers 2× lower input offset and 3× lower power; versus LPV521MG/NOPB, it supports 1.4 V operation and negative-rail inputs but consumes ~100× more current-making TLC1078IP optimal for industrial battery systems needing wide supply tolerance and true single-supply flexibility.

Availability

TLC1078IP is available at Aetrix Electronics and suitable for portable medical sensors, low-power data loggers, energy-harvesting interfaces, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLC1078IP 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 decades of heritage in precision op-amps and low-power design.

The TLC107x family was engineered for µPOWER precision applications-specifically targeting battery-operated instrumentation, sensor signal chains, and portable measurement systems where ultra-low I_DD, rail-to-rail operation, and long-term DC stability are mandatory.

FAQ

What is the minimum supply voltage required for reliable operation of the TLC1078IP?

The TLC1078IP is fully specified to operate at 1.4 V minimum supply voltage, enabling direct use with single silver-oxide watch batteries (nominal 1.55 V). At this voltage, it maintains functional specifications including input offset voltage, common-mode range extending to the negative rail, and rail-to-rail output swing-critical for ultra-low-voltage portable instrumentation where regulation overhead is unacceptable. The TLC1078IP datasheet confirms operation down to 1.4 V across its full –40°C to +85°C temperature range.

Does the TLC1078IP support rail-to-rail input and output operation?

The TLC1078IP supports rail-to-rail output swing-reaching within 100 mV of VDD and down to the negative rail (GND). Its common-mode input voltage range extends to the negative rail but does not reach VDD; at VDD = 5 V, VICR is specified from –0.2 V to 4 V. This "input to negative rail" capability enables true single-supply operation with ground-referenced sensors, while the rail-to-rail output maximizes dynamic range into successive ADC stages. The TLC1078IP pinout reflects this asymmetry in its input voltage range specification.

What is the guaranteed maximum input offset voltage for TLC1078IP over its full operating temperature range?

The TLC1078IP guarantees a maximum input offset voltage of 950 µV over its full –40°C to +85°C operating range, as documented in the "electrical characteristics" table for the I-suffix grade. This value applies under standard test conditions (VO = 1.4 V, RS = 50 Ω) and represents the worst-case DC error contribution across temperature and unit-to-unit variation. At 25°C, the limit is tighter: 450 µV max. This specification makes the TLC1078IP suitable for 12-bit precision applications where total system offset must remain below 1 LSB at gain = 10.

How does the input bias current of TLC1078IP compare to standard bipolar-input op-amps?

The TLC1078IP exhibits a typical input bias current of 0.6 pA at 25°C-over six orders of magnitude lower than typical bipolar-input op-amps (e.g., LM358: ~45 nA). This ultra-low I_IB stems from its LinCMOS™ input stage and enables accurate amplification of signals from high-impedance sources such as pH electrodes, piezoelectric sensors, or photodiode transimpedance circuits without introducing significant DC error or signal loading. The TLC1078IP datasheet confirms I_IB remains below 200 pA even at +85°C, preserving performance in thermally demanding environments.

Is the TLC1078IP pin-compatible with other Texas Instruments op-amps?

Yes-the TLC1078IP is pin-compatible with the TLC27L2 and TLC27L7 dual op-amps in the same 8-pin DIP (P) package. This allows direct drop-in replacement in existing designs to improve precision (lower V_IO), reduce power (150 µW vs. ~1.1 mW), and extend battery life without PCB layout changes. The TLC1078IP pinout matches these predecessors exactly: Pins 1/2/3/4/5/6/7/8 correspond to OUT1/IN1–/IN1+/GND/VDD/OUT2/IN2–/IN2+. Functional compatibility is confirmed in the device description section of the SLOS179A datasheet.