Texas Instruments TLV2231IDBVTG4

Overview

TLV2231IDBVTG4 from Texas Instruments is a single, rail-to-rail output, low-power LinCMOS™ operational amplifier in SOT-23-5 package, specified for 3V/5V operation with 2MHz gain-bandwidth product, 1.6V/µs slew rate at 5V, and 15nV/√Hz input voltage noise at 1kHz - enabling precision signal conditioning in space-constrained, battery-powered sensor interfaces.

For engineers reviewing the TLV2231IDBVTG4 datasheet, TLV2231IDBVTG4 pinout, TLV2231IDBVTG4 application, or TLV2231IDBVTG4 equivalent, key selection criteria include rail-to-rail output swing (enabling full dynamic range with 3V supplies), 1pA typical input bias current (critical for high-impedance piezoelectric transducer buffering), and guaranteed operation across –40°C to +85°C industrial temperature range.

Technical Context

The TLV2231IDBVTG4 employs LinCMOS™ process technology to achieve ultra-low input bias current (1pA typ) while maintaining rail-to-rail output swing and stable unity-gain operation into 600Ω loads. Its architecture supports single-supply operation down to 2.7V with common-mode input range extending to the negative rail - essential for direct interfacing with ADCs and low-voltage microcontroller analog inputs.

Designed for low-noise, low-power signal conditioning, it delivers 15nV/√Hz input voltage noise at 1kHz and 2fA/√Hz input current noise, making it suitable for amplifying weak signals from high-impedance sources without significant degradation. The device's 50° phase margin at unity gain into 600Ω + 100pF ensures stability in standard noninverting and inverting configurations without external compensation.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: 2.9mm × 2.8mm footprint, 5-pin surface-mount, optimized layout with IN+ and IN– separated by GND to minimize coupling; OUT and IN– co-located for compact feedback routing.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar operational amplifier applications.

Compared with OPA333AIDBVR and MCP6001UT-E/OT, TLV2231IDBVTG4 uniquely balances 2MHz bandwidth, 1pA input bias, rail-to-rail output, and industrial temperature rating in a 2.9mm × 2.8mm SOT-23 package - making it optimal for space-constrained, battery-operated industrial sensors requiring both AC performance and DC stability.

Availability

TLV2231IDBVTG4 is available at Aetrix Electronics and suitable for low-power audio preamplifiers, multiplexed data-acquisition systems, and optical module monitoring requiring stable component supply and guaranteed industrial temperature performance.

Supply support for TLV2231IDBVTG4 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, with over 50 years of op-amp innovation and broad portfolio coverage from precision to high-speed.

The TLV2231IDBVTG4 belongs to TI's LinCMOS™ low-power precision op-amp family, engineered specifically for battery-powered instrumentation, portable medical devices, and industrial sensor signal chains demanding rail-to-rail operation and ultra-low input bias current.

FAQ

What is the operating temperature range for TLV2231IDBVTG4?

The TLV2231IDBVTG4 is rated for industrial operation from –40°C to +85°C, as confirmed by its "I" grade suffix and characterization in Section 6.3 of the official datasheet. This range is validated across all electrical parameters including input offset voltage, supply current, and output drive capability - ensuring reliable performance in harsh environments such as factory automation controllers and outdoor sensor nodes.

Does TLV2231IDBVTG4 support true rail-to-rail input?

The TLV2231IDBVTG4 features rail-to-rail *output* swing but only extends its common-mode input voltage range to the negative rail (VDD–), not the positive rail. Per Section 6.3, the common-mode input range is VDD– to (VDD+ – 1.3V) at 5V supply - meaning it accepts inputs down to ground but not up to VDD. This makes it ideal for single-supply sensor buffering where the signal stays near ground, but not for applications requiring full input rail coverage.

Can TLV2231IDBVTG4 drive a 600Ω load effectively?

Yes, the TLV2231IDBVTG4 is explicitly characterized driving 600Ω loads at 5V supply, delivering 1.6V/µs slew rate and maintaining 2MHz gain-bandwidth product per Section 6.7. Its output can source/sink ±4mA (Section 6.6), sufficient for 600Ω at ±2.4V swing. This capability is leveraged in telecom line drivers and ADC reference buffers, where stable loading without external isolation resistors is critical.

What is the typical input bias current of TLV2231IDBVTG4?

The typical input bias current of TLV2231IDBVTG4 is 1pA at +25°C, as specified in Sections 6.4 and 6.6 under "IIB" (Input Bias Current). This ultra-low value is enabled by LinCMOS™ process technology and remains below 150pA across the full –40°C to +85°C range - making it suitable for interfacing with high-impedance sources like piezoelectric transducers, pH electrodes, and photodiodes without introducing significant DC error.

Is TLV2231IDBVTG4 pin-compatible with other SOT-23-5 op-amps?

TLV2231IDBVTG4 uses the industry-standard SOT-23-5 pinout (IN+, GND, IN–, OUT, VDD+) defined in Section 5 of the datasheet. While many SOT-23-5 op-amps share this mapping, pin compatibility does not guarantee functional equivalence - parameters like bandwidth, noise, and output drive differ significantly. Always verify replacement against the full electrical specification table before substitution; TLV2231IDBVTG4 should not be assumed drop-in for unrelated op-amps without validation.