Texas Instruments TLV2780CDR

Overview

TLV2780CDR from Texas Instruments is a single-channel 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 bandwidth and 4.8 V/µs slew rate at just 650 µA per channel, and supports −0.2 V to V_DD+0.2 V common-mode input range - enabling precision signal conditioning in battery-powered sensor front-ends and portable data acquisition systems.

For engineers reviewing the TLV2780CDR datasheet, TLV2780CDR pinout, TLV2780CDR application, or TLV2780CDR equivalent, key selection criteria include its 5-pin SOT-23 package with integrated shutdown, guaranteed 3000 µV max input offset voltage over 0°C to 70°C, rail-to-rail output swing down to 180 mV from rails at 1.8 V supply, and compatibility with high-resolution ADC drivers requiring low noise (9 nV/√Hz @ 10 kHz) and fast settling (1.7 µs to 0.1%).

Technical Context

The TLV2780CDR implements a CMOS input stage with rail-to-rail input common-mode range extending 0.2 V beyond both supply rails, paired with a Class AB output stage enabling full rail-to-rail output swing under load. Its internal architecture achieves 8 MHz unity-gain bandwidth while maintaining stability with capacitive loads up to 25 pF, supported by phase margin ≥58° at 1.8 V–2.7 V supplies.

It integrates an active shutdown function (SHDN pin) that reduces supply current to ≤1.7 µA per channel and places the output in high-impedance state - critical for power-gated signal chains in portable instrumentation. The device is specified for commercial temperature range (0°C to 70°C) and rated for absolute maximum supply voltage of 4 V.

Key Specifications

Pinout & Package

The TLV2780CDR is housed in a 5-pin SOT-23 (DBV) package, tape-and-reel compatible per TI's ordering convention (R suffix). This ultra-small surface-mount package measures 2.9 mm × 1.6 mm × 1.1 mm and features gull-wing leads for automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2780IDR, the TLV2780CDR offers tighter temperature specification and lower cost for commercial applications, while OPA316IDBVR trades shutdown capability for superior DC precision - making TLV2780CDR optimal for cost-sensitive, battery-aware designs needing integrated power control.

Availability

TLV2780CDR is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and low-voltage analog front-ends requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for TLV2780CDR 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 signal chain solutions.

The TLV2780CDR belongs to TI's TLV278x family of rail-to-rail I/O op-amps designed specifically for single-supply, low-voltage portable electronics - emphasizing ultra-low power, wide supply range, and integrated power management features.

FAQ

What is the maximum supply voltage for the TLV2780CDR?

The absolute maximum supply voltage for the TLV2780CDR is 4 V, as specified in the Absolute Maximum Ratings table. However, the recommended operating range is strictly 1.8 V to 3.6 V. Exceeding 3.6 V may cause parametric degradation or reliability risk, and operation above 4 V risks permanent damage. Designers should maintain headroom below 4 V and use appropriate LDO regulation when deriving V_DD from higher-voltage sources.

Does the TLV2780CDR support rail-to-rail input and output simultaneously?

Yes, the TLV2780CDR supports true rail-to-rail input and output operation. Its input common-mode range extends from −0.2 V to V_DD + 0.2 V, and its output can swing within 180 mV of each rail at 1.8 V supply (and closer at higher supplies). This allows the TLV2780CDR to interface directly with ADCs, DACs, and other ICs sharing the same 1.8 V or 2.7 V supply without level-shifting circuitry - a key enabler for simplified single-supply signal chains.

How does the shutdown function work on the TLV2780CDR?

The TLV2780CDR's SHDN pin (Pin 5) is an active-low control. When pulled to GND, the amplifier disables, reducing supply current to ≤1700 nA per channel and placing the output in high-impedance state. To enable, the pin may be left floating (relying on internal weak pull-up) or tied to V_DD. No external pull-up resistor is required, but designers must guard against parasitic leakage that could unintentionally trigger shutdown - especially in high-impedance PCB layouts.

What is the typical input offset voltage of the TLV2780CDR at room temperature?

The typical input offset voltage of the TLV2780CDR at 25°C is 250 µV, with a maximum of 3000 µV across the commercial temperature range (0°C to 70°C). This value is measured under standard test conditions (V_DD = 1.8 V or 2.7 V, R_L = 2 kΩ). The low typical offset supports accurate DC amplification in sensor interfaces, while the guaranteed max ensures predictable worst-case error in production calibration routines.

Can the TLV2780CDR drive capacitive loads without external compensation?

The TLV2780CDR is stable with capacitive loads up to 25 pF when configured as a unity-gain buffer, as confirmed by phase margin ≥58° in the datasheet. For loads exceeding 25 pF - such as ADC input capacitance plus PCB trace capacitance - a series "nulling" resistor (R_NULL) between the output and load is recommended to preserve stability. Typical values range from 10 Ω to 50 Ω depending on load size and layout; this simple addition prevents ringing or oscillation without degrading bandwidth significantly.