Texas Instruments TLV2782AIDR

Overview

TLV2782AIDR from Texas Instruments is a dual rail-to-rail input/output operational amplifier optimized for low-voltage, low-power precision signal conditioning. It operates from 1.8 V to 3.6 V supply, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and 9 nV/√Hz input voltage noise at 10 kHz - enabling high-resolution data acquisition in battery-powered sensor front-ends and portable medical devices.

For engineers reviewing the TLV2782AIDR datasheet, TLV2782AIDR pinout, TLV2782AIDR application, or TLV2782AIDR equivalent, key selection criteria include its −40°C to 125°C industrial temperature range, 250 µV max input offset voltage (A-grade), shutdown capability with 900 nA/channel quiescent current, and MSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV2782AIDR implements a CMOS input stage with rail-to-rail common-mode input range (−0.2 V to VDD+0.2 V) and rail-to-rail output swing, supporting single-supply operation down to 1.8 V while maintaining stability into 10 pF capacitive loads. Its internal architecture enables 8 MHz unity-gain bandwidth with only 650 µA per channel supply current.

It features an active shutdown pin (SHDN) that places both amplifiers in high-impedance output state and reduces total supply current to ≤1.4 µA (2 × 900 nA), with 800 ns turn-on and 200 ns turn-off times - critical for duty-cycled sensing systems requiring fast wake-up response.

Key Specifications

Pinout & Package

TLV2782AIDR is housed in an 8-pin MSOP (DGK) package with 0.65 mm pitch, 3.0 mm × 3.0 mm footprint, and exposed thermal pad (not electrically connected). This ultra-small outline supports high-density mixed-signal PCB layouts while enabling efficient heat dissipation in thermally constrained enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2782IDR and MCP6022-E/SN, TLV2782AIDR uniquely balances ultra-low shutdown current (900 nA), A-grade DC precision (250 µV VIO), and 8 MHz bandwidth in an MSOP-8 package - making it optimal for space- and energy-constrained precision analog systems requiring guaranteed industrial temperature performance.

Availability

TLV2782AIDR is available at Aetrix Electronics and suitable for portable medical devices, industrial 4–20 mA transmitters, and automotive cabin air quality modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2782AIDR 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 TLV278x family was designed specifically for ultra-low-voltage, high-accuracy analog signal conditioning in battery-operated and thermally demanding environments - emphasizing rail-to-rail operation, minimal quiescent current, and robust industrial temperature performance.

FAQ

What is the maximum recommended supply voltage for TLV2782AIDR?

The absolute maximum supply voltage for TLV2782AIDR is 4 V, but the recommended operating range is strictly 1.8 V to 3.6 V per the datasheet. Exceeding 3.6 V risks parametric degradation and reduced reliability, especially at high temperatures. Operation at 3.6 V enables full rail-to-rail output swing while maintaining 8 MHz bandwidth and 4.8 V/µs slew rate - critical for high-fidelity signal reproduction in portable systems.

Does TLV2782AIDR support true rail-to-rail input common-mode range?

Yes, TLV2782AIDR supports a verified common-mode input voltage range of −0.2 V to VDD+0.2 V across its full operating temperature range (−40°C to 125°C). This allows direct interfacing with ground-referenced sensors and signals beyond the supply rails - such as thermocouples or current-sense shunts - without external level-shifting circuitry. The input stage uses complementary CMOS topology to achieve this extended range while maintaining low input bias current (2.5 pA typical).

How does the shutdown function operate on TLV2782AIDR?

The SHDN pin on TLV2782AIDR is an active-low control: pulling it to GND disables both amplifiers, reduces supply current to ≤1.4 µA total (≤900 nA per channel), and places both outputs in high-impedance state. Driving SHDN to VDD or leaving it floating enables normal operation. Turn-on time is 800 ns and turn-off time is 200 ns - measured from SHDN edge to 50% IDD transition - enabling rapid cycling in duty-cycled sensor systems without compromising signal integrity.

What is the typical input offset voltage drift over temperature for TLV2782AIDR?

TLV2782AIDR has a specified temperature coefficient of input offset voltage (αVIO) of 8 µV/°C maximum. Over the full −40°C to 125°C range, this results in ≤1.32 mV total drift (165°C × 8 µV/°C), well within its 3000 µV maximum VIO specification. This low drift - combined with 250 µV max initial offset at 25°C - makes TLV2782AIDR suitable for applications requiring stable DC accuracy without periodic recalibration, such as precision weigh scales and industrial process controllers.

Can TLV2782AIDR drive capacitive loads without external compensation?

TLV2782AIDR is stable for capacitive loads up to 10 pF with no external compensation. For loads >10 pF, TI recommends adding a series resistor (RNULL) between the output and load - typically 10–50 Ω - to isolate the amplifier's output stage from the capacitive reactance and maintain ≥58° phase margin. This design guideline is validated in Figure 18 of the datasheet and prevents ringing or oscillation in applications like ADC input drivers or piezoelectric sensor interfaces where cable capacitance exceeds 10 pF.