Texas Instruments TLV2782CD

Overview

TLV2782CD 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 consumes only 650 µA per channel. Its −0.2 V to V_DD+0.2 V common-mode input range and 9 nV/√Hz input noise at 10 kHz make it suitable for precision signal conditioning in battery-powered data acquisition systems.

For engineers reviewing the TLV2782CD datasheet, TLV2782CD pinout, TLV2782CD application, or TLV2782CD equivalent, key selection criteria include its dual-channel SOIC-8 package, shutdown capability (enabled on TLV2780/3/5 but not TLV2782), commercial temperature grade (0°C to 70°C), and compatibility with single-cell Li-ion or two NiMH battery supplies.

Technical Context

The TLV2782CD implements a CMOS input stage enabling ultra-low input bias current (2.5 pA typ) and rail-to-rail input voltage range exceeding supply rails by ±0.2 V. Its internal compensation supports stable unity-gain operation with capacitive loads up to 25 pF, and phase margin remains ≥58° under 2 kΩ/25 pF conditions.

Unlike TLV2780/3/5 variants, TLV2782CD lacks a dedicated shutdown pin - all eight pins are active signal/power terminals. Its dual-channel architecture shares no internal inter-channel isolation features beyond standard layout-dependent crosstalk suppression (−120 dB typical at 100 kHz).

Key Specifications

Pinout & Package

TLV2782CD is housed in an 8-pin SOIC (D) package with 1.27 mm pitch, JEDEC MS-012AC compliant, and rated for surface-mount reflow. Pin 1 is marked via laser trim or mold index.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2782ID, TLV2782CD trades extended temperature range for lower cost in commercial-grade applications; versus OPA2333AIDR, it offers 26× lower quiescent current but lacks auto-zeroing for ultra-stable DC offsets.

Availability

TLV2782CD is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, and battery-powered data loggers requiring stable component supply across production lifecycles.

Supply support for TLV2782CD 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 amplifiers and low-power design.

The TLV278x product line targets single-supply, low-voltage signal conditioning in space- and energy-constrained systems - emphasizing rail-to-rail operation, sub-1-mA quiescent current, and robust AC performance down to 1.8 V.

FAQ

Does TLV2782CD include a shutdown function?

No, TLV2782CD does not feature a shutdown pin. The TLV278x family reserves shutdown capability exclusively for TLV2780, TLV2783, and TLV2785 variants. TLV2782CD has eight fully active pins - four per channel - with no dedicated enable/disable control. To minimize power in idle states, system-level power gating of V_DD is required. This architectural distinction is confirmed in the "TLV278x PACKAGE PINOUTS" section of the SLOS245E datasheet, where TLV2782 pin diagrams omit any SHDN terminal.

What is the maximum capacitive load TLV2782CD can drive without external compensation?

TLV2782CD maintains ≥58° phase margin with up to 25 pF capacitive load when configured for unity gain and loaded with 2 kΩ, per Figure 18 and electrical characteristics table. For loads exceeding 25 pF - such as ADC input capacitance or long PCB traces - a series null resistor (R_NULL) of 10–50 Ω must be added between the output pin and the capacitive node, as specified in the "Driving a Capacitive Load" application note (Figure 30). Failure to add R_NULL risks oscillation or overshoot, especially at higher supply voltages (3.3–3.6 V).

Can TLV2782CD operate from a split supply?

Yes, TLV2782CD supports split-supply operation within ±0.9 V to ±1.8 V, as stated in the "Recommended Operating Conditions" table. When used with dual rails, the device retains rail-to-rail input and output swing relative to the local supply references. However, the GND pin (Pin 4) must connect to the system's analog ground reference - not the midpoint of the split rails - and the input common-mode range extends from −0.2 V to V_DD+0.2 V relative to that GND. This configuration is validated in test conditions across the datasheet, including noise and dynamic performance measurements.

How does TLV2782CD's input offset voltage compare to TLV2782AID?

TLV2782CD specifies a maximum input offset voltage (V_IO) of 3000 µV at 25°C, while TLV2782AID - the "A" grade variant - guarantees ≤2000 µV at 25°C and ≤3000 µV across the full −40°C to 125°C range. The "A" suffix denotes tighter initial offset and improved temperature coefficient (8 µV/°C max). Both share identical pinout, package, and AC specifications; the difference lies solely in DC precision grading. This is explicitly documented in the "TLV2782 and TLV2783 AVAILABLE OPTIONS" table and electrical characteristics section.

Is TLV2782CD compatible with lead-free soldering processes?

Yes, TLV2782CD in SOIC-8 (D) package is qualified for lead-free reflow per JEDEC J-STD-020 Rev. E, supporting peak temperatures up to 260°C for 10 seconds. The device's absolute maximum rating for lead temperature confirms this (260°C), and TI's packaging documentation lists the SOIC-8 variant as RoHS-compliant and Pb-free. Standard IPC-A-610 Class 2 guidelines apply for assembly, including preheat ramp rates ≤3°C/s and time above liquidus (TAL) of 60–150 seconds.