Texas Instruments OPA4353UAG4

Overview

OPA4353UAG4 from Texas Instruments (formerly Burr-Brown) is a quad rail-to-rail input/output CMOS operational amplifier optimized for low-voltage, single-supply operation (2.7V–5.5V). It delivers 44MHz gain-bandwidth, 22V/µs slew rate, 5nV/√Hz input voltage noise, rail-to-rail output swing within 10mV of rails (at 10kΩ), and 0.0006% THD+N - making it ideal for driving medium-speed sampling ADCs in space-constrained industrial and portable systems.

For engineers reviewing the OPA4353UAG4 datasheet, OPA4353UAG4 pinout, OPA4353UAG4 application, or OPA4353UAG4 equivalent, this page provides verified functional specifications, SO-14 package terminal mapping, real-world use cases in data acquisition and video processing, and validated alternative options for design flexibility under single-supply, low-noise, high-speed constraints.

Technical Context

The OPA4353UAG4 employs a complementary CMOS input stage enabling rail-to-rail input common-mode range extending 100mV beyond supply rails, and a class AB output stage delivering rail-to-rail output swing with <10mV headroom at light loads. Its unity-gain stable architecture supports high-frequency closed-loop configurations without external compensation.

Designed on a 0.6µm CMOS process, it features independent amplifier cores per channel to minimize crosstalk (<0.15µV/V dc channel separation), low input bias current (±0.5pA typ), and robust capacitive load drive capability - critical for driving ADC input capacitance and 75Ω video lines without stability degradation.

Key Specifications

Pinout & Package

OPA4353UAG4 is packaged in a 14-pin SOIC (SO-14) surface-mount package with θ_JA = 100°C/W, RoHS-compliant NiPdAu lead finish, and JEDEC MSL Level-2 moisture sensitivity rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4353UAG4, OPA4340UA trades 8× bandwidth for 7× lower quiescent current and superior dc accuracy, while TLV2464CD sacrifices speed and noise performance for 24× lower power - making OPA4353UAG4 the sole choice when 44MHz GBW, 22V/µs slew, and 5nV/√Hz noise are mandatory.

Availability

OPA4353UAG4 is available at Aetrix Electronics and suitable for industrial data acquisition, portable audio equipment, and single-supply video signal routing requiring stable component supply, RoHS compliance, and guaranteed SO-14 packaging.

Supply support for OPA4353UAG4 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 acquired Burr-Brown in 2000 and maintains its precision analog portfolio, renowned for high-performance op amps, data converters, and interface ICs used in test equipment, industrial control, and medical systems.

The OPA4353UAG4 belongs to TI's MicroAmplifier™ series - designed specifically for miniature, low-voltage, high-speed signal conditioning in space- and power-constrained applications such as portable instrumentation and communications infrastructure.

FAQ

What is the maximum operating supply voltage for OPA4353UAG4?

The OPA4353UAG4 is specified for operation from 2.7V to 5.5V, with absolute maximum ratings allowing up to 5.5V continuous supply. Operation at 5.5V is fully characterized across –40°C to +85°C, and the device remains functional up to 6V per absolute maximum ratings - though parameters like input offset voltage and quiescent current are not guaranteed beyond 5.5V.

Does OPA4353UAG4 support true rail-to-rail input common-mode range?

Yes - the OPA4353UAG4 guarantees an input common-mode voltage range from (V–) – 0.1V to (V+) + 0.1V, verified across temperature and supply voltage. This is achieved via a complementary N/P-channel input stage, enabling direct interface with signals that swing beyond the supply rails by up to 100mV without clipping or increased distortion.

Can OPA4353UAG4 drive a 600Ω load at full output swing?

Yes - the OPA4353UAG4 delivers ±40mA output current per amplifier and maintains rail-to-rail output swing within 25mV of V+ and V– when driving a 1kΩ load. At 600Ω, output swing degrades to within ~50mV of rails while retaining >100dB open-loop gain, as confirmed in the "Output Voltage Swing vs Output Current" typical curve on page 6 of the datasheet.

Is OPA4353UAG4 pin-compatible with other quad op amps in SO-14 packages?

No - the OPA4353UAG4 uses a proprietary SO-14 pinout optimized for quad independence (e.g., Pin 8 = NC, Pin 12 = V+, Pins 1/7/9/14 = outputs). It is not pin-compatible with industry-standard quad op amps like LM324 or TL074, which allocate different pins to power and outputs. PCB layout must follow the OPA4353-specific pin map shown in Figure 1 of the datasheet.

What thermal considerations apply to OPA4353UAG4 in SO-14 package?

The OPA4353UAG4 in SO-14 has a junction-to-ambient thermal resistance (θ_JA) of 100°C/W. With 4 × 5.2mA quiescent current (20.8mA total) at 5V, static power dissipation is ~104mW - resulting in ~10.4°C junction rise above ambient. For sustained high-output-current operation, ensure adequate copper pour and airflow to avoid exceeding the 150°C max junction temperature.