Texas Instruments TLV2635IN

Overview

TLV2635IN from Texas Instruments is a quad-channel, rail-to-rail output operational amplifier with shutdown control, designed for precision signal conditioning in single-supply systems. It operates from 2.7 V to 5.5 V, delivers 9 MHz gain-bandwidth product at 730 µA/channel supply current, supports −40°C to 125°C industrial temperature range, and features ground-sensing input (VICR = GND to VDD−1 V). It is used in high-resolution data acquisition front-ends interfacing with SAR ADCs.

For engineers reviewing the TLV2635IN datasheet, TLV2635IN pinout, TLV2635IN application, or TLV2635IN equivalent, key selection criteria include its rail-to-rail output swing, ultralow shutdown current (4 µA/channel), 50 nV/√Hz input voltage noise, 9.5 V/µs negative slew rate at 5 V, and compatibility with Li-ion powered systems requiring stable 2.7-V operation.

Technical Context

The TLV2635IN implements a CMOS input stage enabling rail-to-rail output swing and ground-referenced common-mode input range. Its internal architecture supports unity-gain stability with capacitive loads up to 10 pF and maintains phase margin ≥50° under typical conditions.

It integrates independent shutdown control per amplifier pair (pins 8 and 15 labeled 1/2SHDN and 3/4SHDN), allowing selective channel disablement without affecting others. Shutdown logic thresholds are specified at VIL ≤ 0.4 V and VIH ≥ 2 V relative to GND.

Key Specifications

Pinout & Package

DIP-16 package (N suffix) with 0.3-inch body width, through-hole mounting, and industry-standard pin spacing. RoHS-compliant, lead-free finish, JEDEC MS-001AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2634IN, TLV2635IN adds dual-pair shutdown control without increasing quiescent current or degrading noise or bandwidth-enabling selective channel power gating in multi-sensor systems. Versus OPA4343UA, it trades 100 µA/channel for 3.5 MHz more bandwidth and tighter input offset drift, favoring high-speed precision over marginal voltage headroom.

Availability

TLV2635IN is available at Aetrix Electronics and suitable for high-speed data acquisition, industrial sensor signal conditioning, portable medical instrumentation, and automotive body control modules requiring stable component supply across extended temperature ranges.

Supply support for TLV2635IN 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, with over 90 years of innovation in precision analog design and manufacturing excellence.

The TLV263x family was engineered for single-supply, rail-to-rail precision amplification in space-constrained, battery-sensitive applications-targeting data converters, portable instrumentation, and industrial sensing where ground-referenced inputs and low power are essential.

FAQ

What is the maximum recommended supply voltage for TLV2635IN?

The absolute maximum supply voltage for TLV2635IN is 6 V, but the recommended operating range is 2.7 V to 5.5 V. Operating above 5.5 V risks permanent damage and violates the device's qualified specifications. At 5.5 V, the TLV2635IN maintains full rail-to-rail output swing and specified 9 MHz gain-bandwidth product, making it ideal for Li-ion battery-powered systems with nominal 3.7 V and peak 4.2 V profiles.

Does TLV2635IN support true rail-to-rail input?

No, TLV2635IN does not support rail-to-rail input. Its common-mode input voltage range is specified as GND to VDD−1 V. While it includes ground in the input range-enabling direct interface with 0-V referenced sensors-it cannot accept signals at or above VDD. This differs from rail-to-rail input op-amps, which extend VICR to the supply rails. The TLV2635IN's input stage is optimized for ground-sensing precision, not full-rail coverage.

How does the shutdown functionality work on TLV2635IN?

The TLV2635IN features two independent shutdown controls: pin 8 (1/2SHDN) disables Amplifiers A and B, and pin 15 (3/4SHDN) disables Amplifiers C and D. A logic-low signal ≤0.4 V places the associated pair into shutdown, reducing supply current to 4 µA per channel. Both controls are CMOS-compatible with standard logic levels and require no external pull resistors if driven actively; however, pull-ups are recommended to ensure defined state during MCU reset.

What is the typical input offset voltage of TLV2635IN over temperature?

The typical input offset voltage of TLV2635IN is 250 µV at 25°C, with a maximum of 5200 µV across the full −40°C to 125°C range. Its temperature coefficient is 3 µV/°C, meaning offset drift contributes ≤300 µV over a 100°C span. This performance is consistent across all four channels and is validated per TI's SLOS362A datasheet, making it suitable for precision DC-coupled applications such as weigh scale front-ends and calibrated sensor interfaces.

Can TLV2635IN drive a 10-kΩ load while maintaining rail-to-rail output?

Yes, TLV2635IN can drive a 10-kΩ load while maintaining rail-to-rail output swing. At VDD = 5 V and IOUT = 0.5 mA, VOH = 4.98 V and VOL = 0.025 V - well within 20 mV of each rail. Even at 10 mA load, output swing remains within 0.35 V of rails (VOH = 4.65 V, VOL = 0.35 V). This capability supports direct interfacing with ADC reference inputs, DAC buffers, and other high-impedance nodes without external gain stages.