Texas Instruments TLC27L2BCDRG4

Overview

TLC27L2BCDRG4 from Texas Instruments is a precision dual CMOS operational amplifier optimized for low-power, single-supply sensor signal conditioning. It delivers 2 mV max input offset voltage at 25°C, ultra-low 34 µA typical supply current (VDD = 5 V), and rail-to-rail output swing down to the negative rail - enabling accurate amplification in battery-powered field transmitters and smoke detectors.

For engineers reviewing the TLC27L2BCDRG4 datasheet, TLC27L2BCDRG4 pinout, TLC27L2BCDRG4 application, or TLC27L2BCDRG4 equivalent, key selection criteria include its 2 mV initial VIO grade, −0.2 V to 3.5 V common-mode input range at 5 V supply, 85 kHz unity-gain bandwidth, LinCMOS™ input impedance of 10¹² Ω, and SOIC-8 packaging for space-constrained industrial analog front-ends.

Technical Context

The TLC27L2BCDRG4 uses Texas Instruments' silicon-gate LinCMOS™ process to achieve stable input offset voltage (≤2 mV at 25°C, drift ≤1.1 µV/°C over 25°C–70°C) and femtoamp-level input bias currents (≤60 pA typ). Its architecture supports true single-supply operation with inputs extending 0.2 V below ground and outputs swinging to within 50 mV of the negative rail.

Designed for C-suffix commercial temperature range (0°C to 70°C), it operates from 3 V to 16 V supply, exhibits 87 dB min CMRR and 97 dB min PSRR at 25°C, and maintains phase margin ≥30° across temperature - ensuring stability in active filters and closed-loop sensor interfaces without external compensation.

Key Specifications

Pinout & Package

Package: SOIC-8 (D package), 3.9 mm × 4.9 mm body, 1.27 mm pitch, gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLC27L2BCDRG4, TLC27L2CDR offers identical functionality without RoHS compliance, while TLV2462IDR trades ultra-low power for higher bandwidth and rail-to-rail inputs - making the TLC27L2BCDRG4 optimal for longevity-critical, low-frequency sensor interfaces.

Availability

TLC27L2BCDRG4 is available at Aetrix Electronics and suitable for pressure transmitters, smoke detectors, flow transmitters, and temperature transmitters requiring stable component supply across industrial OEM production cycles.

Supply support for TLC27L2BCDRG4 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 delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TLC27Lx family was engineered specifically for precision, low-power, single-supply analog signal conditioning in field instrumentation - emphasizing offset stability, input impedance, and supply flexibility over raw speed.

FAQ

What is the maximum operating temperature range for the TLC27L2BCDRG4?

The TLC27L2BCDRG4 is characterized for the C-suffix commercial temperature range: 0°C to 70°C. It supports supply voltages from 3 V to 16 V within this range. Operation outside this range is not guaranteed, and parameters such as input offset voltage drift (1.1 µV/°C) and supply current (34 µA typ) are specified only across 0°C–70°C.

Does the TLC27L2BCDRG4 support true rail-to-rail input operation?

The TLC27L2BCDRG4 does not support rail-to-rail input - its common-mode input voltage range extends to −0.2 V (below GND) and up to 3.5 V at VDD = 5 V. However, it does provide rail-to-rail output swing, reaching within 50 mV of GND and within 0.9 V of VDD. This makes it ideal for single-supply systems where the input signal stays near ground but full output range is needed.

How does the input offset voltage of TLC27L2BCDRG4 compare to the TLC27L2CDR variant?

The TLC27L2BCDRG4 has a maximum input offset voltage of 2 mV at 25°C, whereas the TLC27L2CDR (standard grade) is rated at 10 mV max. Both share identical SOIC-8 packaging and LinCMOS™ technology, but the "B" grade provides five times tighter VIO tolerance - critical for high-accuracy applications like precision transmitter calibration where offset error directly impacts measurement fidelity.

Can the TLC27L2BCDRG4 drive capacitive loads without oscillation?

The TLC27L2BCDRG4 maintains ≥30° phase margin under typical conditions (CL = 20 pF, RL = 1 MΩ), but its stability degrades with larger capacitive loads. For loads >100 pF, external isolation resistance (e.g., 100 Ω in series with the output) is recommended. The datasheet confirms stable operation up to 20 pF; beyond that, layout parasitics and load characteristics require empirical validation in the target application.

Is the TLC27L2BCDRG4 pin-compatible with other devices in the TLC27Lx family?

Yes - all TLC27Lx dual op-amps in SOIC-8 (D) package, including TLC27L2BCDRG4, TLC27L2CDR, TLC27L2ACDR, and TLC27L7CDR, share identical pinout per Figure 4-1 and Table 4-1. This allows direct substitution within the same package footprint when upgrading or downgrading offset voltage grade, provided the application's VIO, bandwidth, and supply requirements remain satisfied.