Texas Instruments TLV2782IDR

Overview

TLV2782IDR 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 noise at 10 kHz - enabling high-resolution data acquisition in battery-powered sensor interfaces and portable instrumentation.

For engineers reviewing the TLV2782IDR datasheet, TLV2782IDR pinout, TLV2782IDR application, or TLV2782IDR equivalent, key selection criteria include its industrial-grade (−40°C to 125°C) temperature rating, MSOP-8 package footprint, shutdown capability (900 nA/channel), and verified rail-to-rail I/O performance across full supply range.

Technical Context

The TLV2782IDR implements a CMOS input stage with rail-to-rail common-mode input voltage 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 8 MHz bandwidth and 58° phase margin into 2 kΩ//25 pF loads. Its shutdown function disables both amplifiers simultaneously with <1 µA total quiescent current.

Designed for stability with minimal external compensation, it achieves 1.7 µs 0.01% settling time (VDD = 2.7 V, AV = −1, CL = 10 pF, RL = 2 kΩ) and maintains >70 dB CMRR over 0.1 Hz–10 kHz - critical for precision transducer signal chains where DC accuracy and AC fidelity must coexist.

Key Specifications

Pinout & Package

TLV2782IDR is housed in an 8-pin MSOP (DGK) package with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed thermal pad (not electrically connected). This thermally enhanced surface-mount package supports automated assembly and delivers ΘJA = 259.9°C/W on standard PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333AIDR and LMV722IDR, TLV2782IDR uniquely balances 8 MHz bandwidth, 1.8 V operation, and nanoampere shutdown - making it optimal for battery-constrained, wide-temperature, medium-speed signal chains where power, voltage, and speed must all be minimized simultaneously.

Availability

TLV2782IDR is available at Aetrix Electronics and suitable for portable medical devices, industrial process controllers, audio line drivers, and high-speed data converter interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2782IDR 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 engineered specifically for ultra-low-voltage, rail-to-rail signal conditioning in space- and power-constrained applications - targeting portable instrumentation, battery-powered sensors, and industrial automation front-ends.

FAQ

What is the maximum operating supply voltage for TLV2782IDR?

The absolute maximum supply voltage for TLV2782IDR 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 or permanent damage, especially under temperature extremes. Operation at 3.6 V delivers optimal slew rate (5 V/µs) and output drive capability while remaining within safe SOA limits for the MSOP-8 package.

Does TLV2782IDR support true rail-to-rail input at 1.8 V supply?

Yes, TLV2782IDR supports rail-to-rail input with a common-mode range of −0.2 V to VDD+0.2 V across its full 1.8–3.6 V supply range and −40°C to 125°C temperature range. At 1.8 V supply, this means inputs can swing from −0.2 V to +2.0 V - enabling direct interfacing with sensors whose outputs exceed the supply rail, such as piezoelectric elements or overvoltage-protected transducers.

How does the shutdown function behave on TLV2782IDR?

TLV2782IDR features a single active-low SHDN pin (Pin 5) that globally disables both amplifiers. When pulled to GND, supply current drops to 900 nA total (450 nA per channel), outputs enter high-impedance state, and internal biasing ceases. The amplifier resumes normal operation within 800 ns after SHDN rises to ≥2 V (for VDD ≥ 2.7 V) - verified across −40°C to 125°C with no startup overshoot or oscillation.

Can TLV2782IDR drive capacitive loads without external isolation?

TLV2782IDR is stable driving ≤10 pF capacitive loads directly. For loads >10 pF (e.g., ADC input capacitance or long cables), a series resistor (RNULL) of 10–50 Ω must be placed between the output and load per Figure 30 in the datasheet. This isolates the amplifier's output stage from phase lag introduced by capacitance, preserving ≥58° phase margin and preventing ringing or oscillation - confirmed in characterization at VDD = 2.7 V, RL = 2 kΩ, CL = 25 pF.

What is the typical input bias current of TLV2782IDR at 25°C?

The typical input bias current for TLV2782IDR is 2.5 pA at 25°C, with a maximum of 300 pA over the full −40°C to 125°C industrial temperature range. This ultra-low bias current minimizes voltage errors in high-impedance sensor interfaces (e.g., pH electrodes or photodiode transimpedance stages), where even 100 pA can generate >10 mV error across 100 MΩ source impedances.