Texas Instruments TLV4387PWR

Overview

TLV4387PWR from Texas Instruments is a quad-channel, zero-drift, precision operational amplifier optimized for high-accuracy signal conditioning in low-voltage, rail-to-rail input/output systems. It delivers ±10 µV max offset voltage, ±0.01 µV/°C drift, 5.7 MHz gain bandwidth, 8.5 nV/√Hz noise at 1 kHz, and operates from 1.7 V to 5.5 V single supply - enabling direct interface with 16–24-bit ADCs in weigh scales and electronic thermometers.

For engineers reviewing the TLV4387PWR datasheet, TLV4387PWR pinout, TLV4387PWR application, or TLV4387PWR equivalent, key selection criteria include ultra-low drift over –40°C to +125°C, 300 pA max input bias current for high-Z sensor front-ends, EMI-filtered inputs, and guaranteed rail-to-rail output swing within 20 mV of rails under load - all in a 14-pin TSSOP package.

Technical Context

The TLV4387PWR implements proprietary auto-zeroing with internal clocking (100–150 kHz) to continuously correct input offset and drift without introducing 1/f noise - confirmed by 177 nVPP (0.1 Hz to 10 Hz) and flat 8.5 nV/√Hz spectral density. Its input stage supports common-mode voltage 100 mV beyond supply rails, eliminating crossover distortion in unipolar sensor interfaces.

Each of its four amplifiers is unity-gain stable, features 120 dB min open-loop gain, 130 dB min CMRR at 5.5 V, and 40° phase margin into 100 pF loads - enabling robust performance in precision transimpedance, difference amplifier, and DAC buffer configurations without external compensation.

Key Specifications

Pinout & Package

PW package: 14-pin TSSOP (4.4 mm × 5.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad connected to V–.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Compared with OPA2189IDR and AD8629ARZ, TLV4387PWR uniquely combines quad-channel integration, 1.7 V operation, and 5.7 MHz bandwidth in a single TSSOP-14 package - making it optimal for space-constrained, battery-powered, high-resolution data acquisition where supply headroom and channel density are critical.

Availability

TLV4387PWR is available at Aetrix Electronics and suitable for electronic thermometer, weigh scale, and analog input module designs requiring stable component supply across automotive, industrial, and medical production programs.

Supply support for TLV4387PWR 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 ICs.

The TLVx387 product line was designed specifically for high-fidelity signal chains in sensor front-ends and data acquisition systems - prioritizing zero-drift stability, low-noise performance, and rail-to-rail operation in low-voltage environments.

FAQ

What is the maximum operating temperature range for TLV4387PWR?

The TLV4387PWR is specified over the industrial temperature range of –40°C to +125°C. All electrical characteristics - including offset voltage drift (±0.01 µV/°C), CMRR (≥110 dB), and quiescent current (≤700 µA per amplifier) - are guaranteed across this full range. This makes TLV4387PWR suitable for under-hood automotive sensors and industrial control cabinets without derating.

Does TLV4387PWR require external capacitors for stability?

No, TLV4387PWR is unity-gain stable and does not require external compensation capacitors. It maintains ≥40° phase margin into 100 pF capacitive loads, as verified in Figure 5-21 of the datasheet. However, a 100 nF ceramic capacitor is mandatory between V+ and V– pins, placed as close as possible to the device, to ensure power supply rejection and prevent oscillation.

Can TLV4387PWR drive a 2 kΩ load rail-to-rail?

Yes, TLV4387PWR delivers rail-to-rail output swing within 20 mV of V– and V+ when driving a 2 kΩ load, as specified in Section 5.7 ("Output" subsection). At 5.5 V supply, typical output voltage range is (V–) + 0.02 V to (V+) – 0.02 V. This capability enables direct interfacing with SAR ADC references and low-voltage logic without level-shifting circuitry.

How does the internal chopping clock affect TLV4387PWR layout?

The internal 100–150 kHz chopping clock can induce small charge-injection pulses at the inputs. To minimize output voltage noise, match impedances seen by +IN and –IN pins (e.g., equal series resistors), and avoid using >100 kΩ resistors directly in series with either input. TLV4387PWR layout should also separate analog input traces from digital switching nodes and use solid ground planes beneath the PW package's exposed thermal pad.

Is TLV4387PWR pin-compatible with other quad op amps in TSSOP-14?

No, TLV4387PWR has a unique pinout optimized for quad-channel symmetry and thermal performance - V– is on pin 11 and V+ on pin 4, with outputs distributed across corners. It is not pin-compatible with AD8629ARZ or LM324 variants. Board redesign is required for substitution; refer to Figure 4-3 and Table 4-3 in SBOSA91B for exact routing.