Texas Instruments TLV2782AID

Overview

TLV2782AID from Texas Instruments is a dual rail-to-rail input/output operational amplifier optimized for low-voltage, high-speed precision signal conditioning. It operates from 1.8 V to 3.6 V, delivers 8 MHz unity-gain bandwidth and 4.8 V/µs slew rate at 2.7 V supply, draws only 650 µA per channel, and supports −40°C to 125°C industrial temperature range - ideal for battery-powered data acquisition front-ends and portable sensor interfaces.

For engineers reviewing the TLV2782AID datasheet, TLV2782AID pinout, TLV2782AID application, or TLV2782AID equivalent, key selection criteria include its rail-to-rail I/O swing at sub-2-V supply, low 9 nV/√Hz input noise at 10 kHz, shutdown capability (900 nA/channel), ±0.2 V beyond-rail common-mode input range, and MSOP-8 package compatibility with space-constrained mixed-signal PCB layouts.

Technical Context

The TLV2782AID employs a CMOS input stage enabling ultra-low input bias current (2.5 pA typ) and rail-to-rail input voltage range extending 0.2 V beyond both supply rails. Its fully differential output stage achieves true rail-to-rail swing with <240 mV low-level output voltage at 5 mA sink current under 1.8 V supply.

Internal compensation ensures stable unity-gain operation into 2 kΩ || 25 pF loads, delivering 58° phase margin and 8 dB gain margin. The device integrates independent shutdown control per amplifier channel, with logic-compatible enable thresholds (VIH = 2 V, VIL = 0.6 V at VDD ≥ 2.7 V) and fast 800 ns turn-on time.

Key Specifications

Pinout & Package

TLV2782AID is housed in an 8-pin MSOP (DGK) package with exposed thermal pad, measuring 3.0 mm × 3.0 mm × 1.0 mm - optimized for thermal performance and board space efficiency in compact industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2782ID, TLV2782AID provides tighter input offset voltage specification (2000 µV vs 3000 µV) over full temperature range - critical for uncalibrated precision measurement. Against MCP6022-E/SN, TLV2782AID enables 1.8 V battery operation and cuts supply current by more than half, albeit with slightly higher noise.

Availability

TLV2782AID is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor transmitters, battery-powered data loggers, and automotive cabin interface modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2782AID 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-amp design and high-volume manufacturing.

The TLV278x family was engineered specifically for ultra-low-voltage, rail-to-rail signal conditioning in portable and industrial systems - balancing speed, power, noise, and temperature robustness in a single platform.

FAQ

What is the maximum recommended supply voltage for TLV2782AID?

The absolute maximum supply voltage for TLV2782AID 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 elevated temperatures. Operation at 3.6 V enables optimal output swing and bandwidth while maintaining 650 µA/channel supply current - TLV2782AID must not be operated continuously at 4 V.

Does TLV2782AID support true rail-to-rail input beyond the supply rails?

Yes, TLV2782AID supports a common-mode input voltage range of −0.2 V to VDD + 0.2 V, verified across the full −40°C to 125°C temperature range. This allows input signals to extend 200 mV below ground or 200 mV above VDD without phase reversal or increased distortion - a key advantage over standard rail-to-rail op-amps and essential for interfacing with bipolar sensors or level-shifted signals in single-supply systems.

What is the typical input bias current of TLV2782AID and why does it matter?

The typical input bias current of TLV2782AID is 2.5 pA at 25°C, with a maximum of 300 pA over the full −40°C to 125°C range. This ultra-low value minimizes voltage errors across high-impedance sources (e.g., pH electrodes, photodiodes, or RC filter networks), preserving signal integrity without requiring guard traces or bias-current compensation resistors - directly enabling high-precision, high-impedance sensor front-ends.

Can TLV2782AID drive capacitive loads without external compensation?

TLV2782AID is stable for capacitive loads up to 25 pF with 2 kΩ series resistance (RL = 2 kΩ, CL = 25 pF), per Figure 13 and Table 1. For loads exceeding 10 pF, TI recommends adding a small series resistor (RNULL) between the output and load capacitance to maintain ≥58° phase margin and prevent ringing. Direct connection to >50 pF loads without isolation risks oscillation - TLV2782AID is not unity-gain stable into purely capacitive loads.

How does the shutdown function behave on TLV2782AID?

TLV2782AID features independent shutdown pins (SHDN1 and SHDN2) that disable each amplifier channel when pulled low (≤0.6 V). In shutdown, supply current drops to 900 nA per channel, and outputs enter high-impedance state - confirmed in Section 7 of the datasheet. Leaving SHDN floating is not recommended due to risk of parasitic leakage inducing partial shutdown; tie unused pins to VDD or GND via 100 kΩ resistors for deterministic behavior.