Texas Instruments TLV272CDGKRG4

Overview

TLV272CDGKRG4 from Texas Instruments is a dual rail-to-rail output operational amplifier optimized for low-power, wide-bandwidth signal conditioning in battery-powered and industrial systems. It delivers 3-MHz unity-gain bandwidth, 2.4 V/µs slew rate, 550 µA per channel supply current, and 39 nV/√Hz input voltage noise across a 2.7 V to 16 V supply range - enabling precision sensing and analog front-end design in Li-ion–powered instrumentation and building automation.

For engineers reviewing the TLV272CDGKRG4 datasheet, TLV272CDGKRG4 pinout, TLV272CDGKRG4 application, or TLV272CDGKRG4 equivalent, key selection criteria include rail-to-rail output swing at low supply voltage, picoampere-level input bias current for high-impedance sensor interfaces, thermal performance in VSSOP packaging, and compatibility with MSP430 microcontroller supply domains.

Technical Context

The TLV272CDGKRG4 employs a CMOS input stage with 1 pA typical input bias current and rail-to-rail output stage using complementary push-pull transistors, enabling full dynamic range utilization down to 2.7 V single supply. Its 3-MHz gain-bandwidth product is maintained across ±1.35 V to ±8 V split supplies and 2.7 V to 16 V single supplies.

It operates over the industrial temperature range (−40°C to +125°C), supports common-mode input voltage from ground to VDD − 1.35 V, and achieves 65 dB minimum phase margin into 10 pF capacitive load - requiring external series R_NULL ≥ 20 Ω for loads >10 pF to ensure stability.

Key Specifications

Pinout & Package

TLV272CDGKRG4 is packaged in an 8-pin VSSOP (DGK) with 3.00 mm × 3.00 mm body size and 0.5-mm lead pitch, optimized for space-constrained PCB layouts while maintaining thermal resistance R_θJA = 186.6°C/W.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual rail-to-rail operational amplifier applications.

Compared with TLV272IDGKR, TLV272CDGKRG4 trades extended temperature range for lower cost in commercial applications; compared with TLV2372IDGKR, it lacks shutdown but delivers higher output current and wider supply range - making it optimal for always-on, moderate-power analog signal chains.

Availability

TLV272CDGKRG4 is available at Aetrix Electronics and suitable for smoke detectors, power banks, and building automation systems requiring stable component supply, long-term manufacturability, and TI-qualified industrial-grade alternatives.

Supply support for TLV272CDGKRG4 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 expertise in precision op-amps and low-power signal chain solutions.

The TLV27x family was designed specifically for battery-powered instrumentation and industrial sensing applications demanding rail-to-rail output, ultra-low input bias current, and robust operation across wide supply and temperature ranges.

FAQ

What is the maximum capacitive load the TLV272CDGKRG4 can drive without external compensation?

The TLV272CDGKRG4 maintains stable operation with ≤10 pF capacitive load at unity gain. For loads exceeding 10 pF, Texas Instruments recommends adding a series resistor (R_NULL ≥ 20 Ω) between the output pin and the load capacitance to preserve ≥65° phase margin and prevent oscillation - a requirement confirmed in Section 8.3.3 and Figure 26 of the TLV272CDGKRG4 datasheet.

Does the TLV272CDGKRG4 support split-supply operation, and what are the limits?

Yes, the TLV272CDGKRG4 supports true split-supply operation from ±1.35 V to ±8 V, as specified in Section 7.2 Recommended Operating Conditions. This enables bipolar signal handling in audio preamps or sensor interfaces requiring negative voltage swing, while maintaining rail-to-rail output and 1 pA input bias current performance across the full range.

How does the input common-mode voltage range of the TLV272CDGKRG4 affect its use with low-side current sensing?

The TLV272CDGKRG4 has a common-mode input range from GND to VDD − 1.35 V, meaning it cannot accept inputs within 1.35 V of the positive rail. For low-side current sensing where the sense resistor is grounded, this allows direct connection of the inverting input to the shunt - but prohibits high-side sensing configurations without level-shifting, as confirmed in Section 7.2 and Figure 8-1 of the TLV272CDGKRG4 datasheet.

Is the TLV272CDGKRG4 pin-compatible with the TLC272 series, and what are the key functional upgrades?

The TLV272CDGKRG4 shares identical 8-pin SOIC, VSSOP, and PDIP footprints with the TLC272, enabling drop-in replacement in existing layouts. Key upgrades include rail-to-rail output (vs. limited swing in TLC272), 3-MHz bandwidth (vs. 1.7 MHz), lower input bias current (1 pA vs. 1 pA - matched), and 2.7 V minimum supply (vs. 3 V), as documented in the Device Comparison Table (Section 5) of the TLV272CDGKRG4 datasheet.

What is the typical input offset voltage drift of the TLV272CDGKRG4 over temperature, and how does it impact precision DC measurements?

The TLV272CDGKRG4 exhibits a typical input offset voltage drift of 2 µV/°C, as specified in Section 7.6 Electrical Characteristics. Over a 100°C span (e.g., −40°C to +60°C), this contributes ≤200 µV of additional offset error - acceptable for 12-bit systems (LSB = 800 µV at 3.3 V) but requiring calibration or chopper-stabilized alternatives for 16-bit precision DC measurement applications.