Texas Instruments TLV2782CDGKRG4

Overview

TLV2782CDGKRG4 from Texas Instruments is a dual rail-to-rail input/output operational amplifier optimized for low-voltage, low-power applications. It operates from 1.8 V to 3.6 V, delivers 8 MHz gain-bandwidth, 4.8 V/µs slew rate at 2.7 V, and draws only 650 µA per channel - enabling high-speed signal conditioning in battery-powered data converters and portable instrumentation.

For engineers reviewing the TLV2782CDGKRG4 datasheet, TLV2782CDGKRG4 pinout, TLV2782CDGKRG4 application, or TLV2782CDGKRG4 equivalent, key selection criteria include its 1.8 V minimum supply, −0.2 V to VDD+0.2 V common-mode input range, shutdown capability (900 nA/channel), 9 nV/√Hz input noise at 10 kHz, and MSOP-8 package compatibility with space-constrained PCB layouts.

Technical Context

The TLV2782CDGKRG4 implements a CMOS input stage with rail-to-rail input common-mode range extending 0.2 V beyond both supply rails and rail-to-rail output swing within 180 mV of each rail at 1 mA load. Its internal architecture supports stable unity-gain operation with ≥58° phase margin into 2 kΩ//25 pF loads.

It features an active shutdown control pin (SHDN) that disables both amplifiers and reduces supply current to ≤1.7 µA total (900 nA/channel), placing outputs in high-impedance state - critical for power-gating in multi-stage analog front-ends and portable sensor interfaces.

Key Specifications

Pinout & Package

TLV2782CDGKRG4 is housed in an 8-pin MSOP (DGK) package - 3.0 mm × 3.0 mm footprint, 0.65 mm pitch, thin profile (1.1 mm height) - optimized for high-density portable 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 TLV2782IDGKR, TLV2782CDGKRG4 offers lower cost and sufficient performance for consumer-grade portable instruments, while OPA2314AIDGKR provides superior DC accuracy at reduced speed - making TLV2782CDGKRG4 optimal for cost-sensitive, medium-speed signal chains.

Availability

TLV2782CDGKRG4 is available at Aetrix Electronics and suitable for portable data acquisition, low-power sensor interface, audio line driver, and medical front-end applications requiring stable component supply across production lifecycles.

Supply support for TLV2782CDGKRG4 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 for industrial, automotive, and personal electronics markets.

The TLV278x family was designed specifically for ultra-low-voltage, rail-to-rail signal conditioning in battery-powered instrumentation - prioritizing 1.8 V operation, shutdown efficiency, and high-speed precision in compact packages.

FAQ

What is the maximum supply voltage for TLV2782CDGKRG4?

The absolute maximum supply voltage for TLV2782CDGKRG4 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 latch-up, especially at elevated temperatures. 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 TLV2782CDGKRG4 support true rail-to-rail input and output?

Yes, TLV2782CDGKRG4 supports true rail-to-rail input (VICR = −0.2 V to VDD+0.2 V) and rail-to-rail output (VOH ≥ VDD−180 mV and VOL ≤ 180 mV above GND at 1 mA). This allows full-scale signal handling in 1.8 V systems - e.g., digitizing 0–1.8 V sensor outputs directly into an ADC without external biasing or level-shifting circuitry.

How does the shutdown function operate on TLV2782CDGKRG4?

The SHDN pin (Pin 5) is active-low: pulling it ≤0.6 V disables both amplifiers and reduces total supply current to ≤1.7 µA (900 nA per channel), placing outputs in high-impedance state. To enable, drive SHDN ≥2 V (for VDD ≥2.7 V) or ≥0.75VDD (for VDD <2.7 V). Floating SHDN defaults to enabled, but parasitic leakage must be controlled to prevent unintended shutdown.

What is the typical input offset voltage for TLV2782CDGKRG4?

The typical input offset voltage for TLV2782CDGKRG4 is 250 µV at 25°C, with a maximum of 3000 µV over the 0°C to 70°C commercial temperature range. The 'A' variant (TLV2782ACDGKRG4) specifies 2000 µV max over −40°C to 125°C. This low VIO enables accurate amplification of mV-level transducer signals without nulling circuitry in most portable instrumentation designs.

Can TLV2782CDGKRG4 drive capacitive loads without instability?

TLV2782CDGKRG4 is stable for capacitive loads ≤10 pF with direct connection. For larger loads (e.g., ADC input capacitance or long traces), a series resistor (RNULL) of 10–50 Ω must be added between the output and load to maintain ≥58° phase margin and prevent ringing - as confirmed by Figure 18 in the datasheet showing phase margin degradation above 10 pF with zero RNULL.