Texas Instruments OPA2320AQDGKRQ1

Overview

OPA2320AQDGKRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 qualified precision CMOS operational amplifier optimized for low-noise, rail-to-rail I/O, and zero-crossover distortion performance in automotive and industrial signal conditioning. It delivers 20 MHz gain bandwidth, 7 nV/√Hz input voltage noise at 10 kHz, and 150 µV maximum offset voltage across –40°C to +125°C ambient temperature - enabling high-fidelity sensor buffering and ADC driving in battery-powered systems.

For engineers reviewing the OPA2320AQDGKRQ1 datasheet, OPA2320AQDGKRQ1 pinout, OPA2320AQDGKRQ1 application, or OPA2320AQDGKRQ1 equivalent, key selection criteria include its 0.9 pA max input bias current, 114 dB CMRR, 1.45 mA/ch quiescent current, and VSSOP-8 packaging - all critical for high-Z transimpedance amplifiers, motor control loops, and precision analog front-ends requiring automotive-grade reliability.

Technical Context

The OPA2320AQDGKRQ1 employs a linear CMOS input stage with EMI-rejecting internal low-pass filtering (–3 dB at ~580 MHz) and charge-pump-assisted biasing to eliminate crossover distortion across the full common-mode range (V– – 0.1 V to V+ + 0.1 V). Its unity-gain stability and 47° phase margin support robust operation into 1 nF capacitive loads without external compensation.

This dual op amp features matched channel characteristics - including 130 dB typical input offset-voltage channel separation and <0.9 pA input bias current per channel - enabling precise differential signal processing in programmable logic controllers and active filter topologies where inter-channel tracking and low leakage are essential.

Key Specifications

Pinout & Package

OPA2320AQDGKRQ1 is housed in an 8-pin VSSOP (DGK) package measuring 3.00 mm × 3.00 mm with 0.65 mm pitch, optimized for space-constrained automotive ECUs and industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333QDGKRQ1 and LMV722QMG/NOPB, the OPA2320AQDGKRQ1 uniquely balances 20 MHz bandwidth, 0.9 pA input bias, and AEC-Q100 Grade 1 qualification - making it the only viable option for high-accuracy, high-speed automotive signal chains where thermal robustness and noise performance are co-constrained.

Availability

OPA2320AQDGKRQ1 is available at Aetrix Electronics and suitable for automotive sensor signal conditioning, transimpedance amplification, motor control loop feedback, and ADC/DAC buffering requiring stable component supply across extended temperature and long production lifecycles.

Supply support for OPA2320AQDGKRQ1 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 company specializing in analog and embedded processing technologies, with leadership in precision analog ICs for automotive, industrial, and communications markets.

The OPAx320-Q1 product line was designed specifically for high-accuracy, low-noise signal conditioning in automotive electronics - emphasizing zero-crossover distortion, rail-to-rail operation, and AEC-Q100 qualification from –40°C to +125°C.

FAQ

What is the maximum operating temperature range for the OPA2320AQDGKRQ1?

The OPA2320AQDGKRQ1 is AEC-Q100 Grade 1 qualified and specified for continuous operation from –40°C to +125°C ambient temperature. Its electrical characteristics - including offset voltage drift (≤5 µV/°C), CMRR (≥96 dB), and quiescent current (≤1.7 mA/ch) - are guaranteed across this full range, making it suitable for under-hood automotive applications and industrial environments with extreme thermal cycling.

Does the OPA2320AQDGKRQ1 support single-supply operation?

Yes, the OPA2320AQDGKRQ1 supports true single-supply operation from 1.8 V to 5.5 V. Its rail-to-rail input stage accepts common-mode voltages from V– – 0.1 V to V+ + 0.1 V, and its output swings within 10 mV of both rails under 10 kΩ load - enabling direct interfacing with 3.3 V or 5 V microcontrollers and ADCs without level-shifting circuitry.

What is the input bias current specification for the OPA2320AQDGKRQ1?

The OPA2320AQDGKRQ1 has a maximum input bias current of ±0.9 pA at 25°C, with ±400 pA maximum over the full –40°C to +125°C temperature range. This ultra-low bias current is enabled by its CMOS input stage and makes the device ideal for high-impedance sensor interfaces such as photodiode transimpedance amplifiers and piezoelectric signal conditioning where leakage would otherwise dominate error budgets.

Is the OPA2320AQDGKRQ1 stable when driving capacitive loads?

Yes, the OPA2320AQDGKRQ1 is unity-gain stable and remains stable with up to 1 nF of pure capacitive load in unity-gain buffer configuration. Its internal compensation and 47° phase margin ensure robust performance without external isolation resistors - though for loads >1 nF or in high-gain configurations, layout optimization and optional series output resistance (10–20 Ω) may be used to further suppress overshoot.

How does the EMI filtering in the OPA2320AQDGKRQ1 improve system reliability?

The OPA2320AQDGKRQ1 integrates an internal input low-pass filter with ~580 MHz –3 dB cutoff and 20 dB/decade roll-off, which suppresses RF rectification effects from cellular, WiFi, and Bluetooth interference. This prevents spurious DC offset shifts at the output - a critical advantage in automotive infotainment and ADAS modules where EMI-induced errors could compromise sensor fusion accuracy or functional safety diagnostics.