Texas Instruments OPA4364AQDRQ1

Overview

OPA4364AQDRQ1 from Texas Instruments is a quad, rail-to-rail input/output operational amplifier optimized for automotive-grade signal conditioning in 1.8-V to 5.5-V single-supply systems. It delivers 7 MHz gain bandwidth, 5 V/µs slew rate, 90 dB CMRR (typ), 500 µV max offset voltage, and operates across –40°C to 125°C - enabling precision sensor interfacing in battery-powered ADAS front-end modules.

For engineers reviewing the OPA4364AQDRQ1 datasheet, OPA4364AQDRQ1 pinout, OPA4364AQDRQ1 application, or OPA4364AQDRQ1 equivalent, key selection criteria include rail-to-rail I/O swing within 10 mV of rails, low 750 µA/channel quiescent current at 1.8 V, no-input-crossover architecture for THD-sensitive ADC driving, and AEC-Q100 Grade 1 qualification for under-hood deployment.

Technical Context

The OPA4364AQDRQ1 uses a complementary input stage with no crossover region, eliminating common-mode-induced distortion during ADC buffer operation. Its input common-mode range extends 100 mV beyond both supply rails, and output swings to within 10 mV of V– and V+, supporting true single-supply 0–V to full-scale signal handling.

It features integrated ESD protection diodes on all pins (±10 mA max input current), supports capacitive loads up to 1000 pF in unity gain, and includes shutdown capability drawing <1 µA/channel. All specifications are fully characterized from –40°C to 125°C per AEC-Q100 requirements.

Key Specifications

Pinout & Package

OPA4364AQDRQ1 is housed in a 14-pin SOIC (D package), 3.90 mm × 8.65 mm body, 1.75 mm max height, RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad rail-to-rail op amp applications.

Compared with OPA4364AQDRQ1, OPA4376AQDRQ1 trades bandwidth and slew for lower quiescent current, while LMV434QDR offers lower cost at the expense of precision - making OPA4364AQDRQ1 the optimal balance of speed, accuracy, and automotive reliability for mid-tier signal chains.

Availability

OPA4364AQDRQ1 is available at Aetrix Electronics and suitable for automotive sensor signal conditioning, ADC driver circuits, portable audio front-ends, and active filtering applications requiring stable component supply across extended temperature ranges.

Supply support for OPA4364AQDRQ1 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, embedded processing, and connectivity solutions for automotive, industrial, and personal electronics markets.

The OPAx364-Q1 product line was designed specifically for AEC-Q100-compliant, low-voltage, rail-to-rail signal conditioning in automotive powertrain and ADAS systems - emphasizing precision, low power, and robustness across –40°C to 125°C.

FAQ

What is the maximum capacitive load the OPA4364AQDRQ1 can drive in unity-gain configuration?

The OPA4364AQDRQ1 can directly drive pure capacitive loads up to approximately 1000 pF in unity-gain configuration while maintaining stability. For larger loads, a 10–20 Ω series resistor at the output improves phase margin. The device's ability to drive such loads stems from its optimized internal compensation and low output impedance - critical for buffering ADC input capacitance without external isolation components. This capability is confirmed in Figure 13 of the OPA4364AQDRQ1 datasheet.

Does the OPA4364AQDRQ1 support true rail-to-rail input common-mode voltage range?

Yes, the OPA4364AQDRQ1 supports an input common-mode voltage range extending 100 mV beyond both supply rails - from (V–) – 0.1 V to (V+) + 0.1 V. This is enabled by its unique complementary input stage with no crossover region, ensuring linear offset behavior across the full range. As a result, the OPA4364AQDRQ1 avoids the distortion spikes typical of conventional rail-to-rail op amps near supply rails - a key advantage when interfacing with resistive sensor dividers or reference voltages near V– or V+.

What is the guaranteed output voltage swing for the OPA4364AQDRQ1 at 1.8-V supply?

At VS = 1.8 V, the OPA4364AQDRQ1 delivers a minimum output voltage swing of 10 mV from each rail (V– and V+) into a 10 kΩ load. This rail-to-rail output performance is maintained across the full –40°C to 125°C temperature range and enables precise 0–1.8 V signal handling in low-voltage automotive subsystems. The specification is verified per test condition RL = 10 kΩ connected to VS/2, and is documented in the Electrical Characteristics table of the OPA4364AQDRQ1 datasheet.

Is the OPA4364AQDRQ1 pin-compatible with any industry-standard quad op amp packages?

The OPA4364AQDRQ1 uses the standard SOIC-14 (D package) footprint defined by JEDEC MS-012 variation AB, matching industry-standard 14-pin SOIC layouts. Its pinout follows TI's conventional quad op amp assignment (dual-in-line symmetry with V– and V+ on outer pins), ensuring mechanical compatibility with existing PCB footprints for devices like LM324 or TLV2464 - though electrical characteristics and performance differ significantly. Always verify layout against the OPA4364AQDRQ1-specific land pattern in the D0014A package outline.

How does the OPA4364AQDRQ1 achieve low THD+N when driving ADCs?

The OPA4364AQDRQ1 achieves 0.002% THD+N (20 Hz–20 kHz) when driving ADCs primarily through its no-crossover input stage, which eliminates the offset discontinuity that causes harmonic distortion near supply rails. Combined with 90 dB CMRR and 80 dB PSRR, this architecture prevents degradation of differential linearity and maintains THD performance even when the input common-mode voltage sweeps across the full rail range - a documented advantage over competing amplifiers in ADC buffer applications per Figure 20 of the OPA4364AQDRQ1 datasheet.