Texas Instruments TLC272IDRG4

Overview

TLC272IDRG4 from Texas Instruments is a precision dual CMOS operational amplifier optimized for single-supply operation, featuring 10 mV max input offset voltage (I-suffix grade), 10.8 nV/√Hz input voltage noise at 1 kHz, and rail-to-rail output swing down to the negative rail. It operates from 4 V to 16 V over –40°C to 85°C and delivers 4.5 MHz unity-gain bandwidth with 0.5 V/μs slew rate - enabling high-fidelity signal conditioning in battery-powered sensor interfaces and industrial analog front-ends.

For engineers reviewing the TLC272IDRG4 datasheet, TLC272IDRG4 pinout, TLC272IDRG4 application, or TLC272IDRG4 equivalent, key selection criteria include its low-input-bias-current (≤60 pA typ), wide common-mode input range extending below ground, ESD-protected architecture, and SOIC-8 packaging compatible with automated assembly.

Technical Context

The TLC272IDRG4 uses a polysilicon-gate CMOS process to achieve ultra-high input impedance (>10¹² Ω) and low input bias current (10–60 pA), minimizing loading on high-impedance sources like piezoelectric sensors or pH electrodes. Its input stage supports common-mode voltages from –0.1 V to VDD–1.5 V across temperature, enabling true single-supply operation without level-shifting circuitry.

Internally, it integrates latch-up immunity and ESD protection, with two independent amplifiers sharing only supply rails. The device exhibits 65–85 dB common-mode rejection and 65–120 dB supply-voltage rejection, maintaining accuracy under noisy or varying rail conditions typical in PLC I/O modules and portable instrumentation.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 4.9 mm × 6.0 mm body, 1.27 mm pitch, gull-wing leads. RoHS-compliant, tape-and-reel (DRG4 suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV272IDR and OPA2333AIDR, the TLC272IDRG4 provides the best balance of cost, 4–16 V operability, and proven robustness in industrial-grade designs - making it ideal for legacy-compatible upgrades and high-volume sensor nodes where 10 mV offset is acceptable.

Availability

TLC272IDRG4 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, portable medical instrumentation, and automotive cabin environment sensing requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLC272IDRG4 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 90 years of innovation in precision analog ICs and industrial-grade components.

The TLC272IDRG4 belongs to TI's precision CMOS op-amp family designed for cost-sensitive, single-supply applications demanding low bias current, rail-to-rail output, and robust ESD tolerance - targeting industrial automation, test equipment, and sensor interface markets.

FAQ

What is the maximum input common-mode voltage range for TLC272IDRG4?

The TLC272IDRG4 supports a common-mode input voltage range of –0.1 V to VDD–1.5 V across its full operating temperature range (–40°C to 85°C). At VDD = 5 V and 25°C, this translates to –0.1 V to 3.5 V; at VDD = 10 V, it extends to –0.1 V to 8.5 V. This allows direct interfacing with ground-referenced sensors without external level-shifting circuitry, a key advantage in single-supply systems using the TLC272IDRG4.

Does TLC272IDRG4 support true rail-to-rail input operation?

No, the TLC272IDRG4 does not support rail-to-rail input operation. Its input common-mode range extends 0.1 V below the negative rail (GND) but only up to VDD–1.5 V at the upper end - not to the positive rail. However, its output is rail-to-rail capable down to GND and up to VDD–1.5 V. This asymmetric input range is intentional for single-supply optimization and is fully documented in the TLC272IDRG4 electrical characteristics tables.

What is the typical supply current consumption of TLC272IDRG4 at 5 V?

The TLC272IDRG4 draws 1.12–3.2 mA typical supply current (for both amplifiers combined) at VDD = 5 V and 25°C, depending on load and common-mode conditions. At full temperature range (–40°C to 85°C), the maximum specified IDD is 4.4 mA. This low quiescent current enables efficient use in battery-powered instrumentation where power budget is constrained, while maintaining precision performance in the TLC272IDRG4.

Can unused amplifier sections in TLC272IDRG4 be left floating?

No - unused amplifier sections in the TLC272IDRG4 must not be left floating. TI explicitly recommends configuring unused op-amps as grounded unity-gain followers (non-inverting buffer with output tied to inverting input and non-inverting input tied to GND) to prevent oscillation, phase reversal, or increased supply current. This requirement is stated in Section 6.1.2 of the TLC272IDRG4 datasheet and applies to all variants in the TLC272 family.

Is TLC272IDRG4 pin-compatible with other SOIC-8 dual op-amps like LM358?

No, the TLC272IDRG4 is not pin-compatible with LM358. While both are SOIC-8 dual op-amps, the LM358 uses standard pinout (Out A, In– A, In+ A, V–, In+ B, In– B, Out B, V+), whereas the TLC272IDRG4 follows TI's CMOS op-amp pinout (Out A, In– A, In+ A, V–, In+ B, In– B, Out B, V+). Although the sequence appears identical, internal design differences mean direct substitution requires verification of input/output voltage ranges, bias current, and stability compensation - the TLC272IDRG4 is not a drop-in replacement for LM358.