Texas Instruments TLC27L4CNSR

Overview

TLC27L4CNSR from Texas Instruments is a precision quad CMOS operational amplifier in 14-pin SOP (NS) package, featuring 10 mV max input offset voltage at 25°C, ultra-low 195 µW power consumption at 5 V, and rail-to-rail output swing including the negative rail. It operates from 3 V to 16 V over 0°C to 70°C and supports single-supply sensor signal conditioning in battery-powered field transmitters.

For engineers reviewing the TLC27L4CNSR datasheet, TLC27L4CNSR pinout, TLC27L4CNSR application, or TLC27L4CNSR equivalent, key selection criteria include input offset voltage stability (0.1 µV/month drift), common-mode input range extending below ground, high 10¹² Ω input impedance, and ESD protection rated to 2000 V per MIL-STD-883C Method 3015.2.

Technical Context

The TLC27L4CNSR uses TI's LinCMOS™ silicon-gate process to achieve bipolar-like precision with CMOS power efficiency. Its input stage enables true single-supply operation with common-mode voltage down to –0.2 V (at VDD = 5 V), while maintaining low bias currents (<1 pA typ) and high DC gain (>50 V/mV).

It delivers stable unity-gain performance (85 kHz bandwidth, 34° phase margin at 25°C) with low 70 nV/√Hz input noise and slew rate of 0.03 V/µs - optimized for low-frequency, high-impedance transducer interfacing where power and offset stability are critical.

Key Specifications

Pinout & Package

Package: NS (14-pin SOP), 5.3 mm × 10.2 mm body, 1.27 mm pitch, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad precision op amp applications.

Compared with TLC27L4CDR, the TLC27L4CNSR offers identical precision and power but requires SOP-specific layout; versus LM324DR, it delivers 70× lower supply current and true single-supply operation at the cost of higher unit price and tighter layout tolerances.

Availability

TLC27L4CNSR is available at Aetrix Electronics and suitable for field transmitter, smoke detector, and battery-powered sensor applications requiring stable component supply across extended product lifecycles.

Supply support for TLC27L4CNSR 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 focused on analog and embedded processing technologies, with decades of expertise in precision op amps and industrial signal chains.

The TLC27Lx family was designed specifically for low-power, high-impedance sensor interfacing in harsh industrial environments - emphasizing offset stability, rail-to-rail operation, and latch-up immunity over raw speed.

FAQ

What is the maximum operating temperature range for the TLC27L4CNSR?

The TLC27L4CNSR is characterized for operation from 0°C to 70°C (C-suffix grade). It supports supply voltages from 3 V to 16 V within this range. At 70°C, key parameters include 12 mV max input offset voltage, 56 µA max supply current, and 3.0 V min high-level output voltage - all verified per TI's SLOS053E datasheet Section 5.4.

Does the TLC27L4CNSR support true rail-to-rail input?

The TLC27L4CNSR does not support rail-to-rail input - its common-mode input voltage range extends to –0.2 V below GND but only up to 3.5 V (at VDD = 5 V), not to VDD. However, it does provide rail-to-rail output swing, with VOL ≤ 50 mV and VOH ≥ 3.2 V under specified conditions. This makes it ideal for single-supply applications where the input signal stays near ground.

Can the TLC27L4CNSR drive capacitive loads directly?

The TLC27L4CNSR is not unity-gain stable into heavy capacitive loads. Per Figure 5-29 in the datasheet, phase margin drops below 30° when driving >100 pF. For loads >50 pF, use isolation resistance (e.g., 100 Ω in series with output) or add a dedicated buffer stage. The device is optimized for resistive loads ≥1 MΩ, as confirmed in Sections 5.4 and 5.5.

What is the input bias current specification for the TLC27L4CNSR at 70°C?

At 70°C, the TLC27L4CNSR has a maximum input bias current of 600 pA and maximum input offset current of 300 pA, per Section 5.4 of the SLOS053E datasheet. These values reflect the LinCMOS™ process's excellent thermal stability - both parameters remain sub-nA across the full 0°C to 70°C range, enabling high-precision measurements with megohm-level source impedances.

Is the TLC27L4CNSR pin-compatible with other TLC27Lx variants in SOP-14 packages?

Yes - the TLC27L4CNSR shares identical pinout and footprint with TLC27L4ACNSR, TLC27L4BCNSR, and TLC27L9CNSR in the NS (SOP-14) package. All variants use the same 14-pin configuration shown in Figure 4-1 and Table 4-1. Electrical differences (e.g., 10 mV vs 5 mV VIO) do not affect mechanical or connection compatibility, allowing drop-in upgrades where precision requirements evolve.