Texas Instruments OPA4353EA/2K5G4

Overview

OPA4353EA/2K5G4 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, and output swing within 10mV of rails under 10kΩ load - enabling high-fidelity signal conditioning in space-constrained data acquisition and video line driver circuits.

For engineers reviewing the OPA4353EA/2K5G4 datasheet, OPA4353EA/2K5G4 pinout, OPA4353EA/2K5G4 application, or OPA4353EA/2K5G4 equivalent, key selection criteria include rail-to-rail I/O performance at 2.7V supply, 0.0006% THD+N at 1kHz, 75Ω video drive capability, and SSOP-16 thermal resistance (θ_JA = 100°C/W) for thermally demanding embedded systems.

Technical Context

The OPA4353EA/2K5G4 employs a complementary N/P-channel input stage to achieve rail-to-rail input common-mode range extending 100mV beyond V+ and V−, with a 400mV transition region where both pairs conduct. Its double-folded cascode architecture feeds a class AB output stage capable of ±40mA output current and 75Ω video drive compliance.

Specified over –40°C to +85°C, it maintains 100dB open-loop gain (RL = 10kΩ), 76–86dB CMRR (V_CM = –0.1V to V+–2.4V), and 40–175µV/V PSRR across 2.7V–5.5V supply. Channel separation exceeds 120dB at 1kHz, ensuring minimal crosstalk in quad configurations used for multi-channel sensor interfaces or A/D front-ends.

Key Specifications

Pinout & Package

OPA4353EA/2K5G4 is packaged in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, footprint code DBQ, and moisture sensitivity level (MSL) 2–260°C/1 year. Thermal resistance θ_JA = 100°C/W supports continuous operation in compact industrial enclosures.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4340UA and TLV2474CD, the OPA4353EA/2K5G4 uniquely combines 44MHz bandwidth, 22V/µs slew rate, and 0.0006% THD+N in a quad configuration - making it irreplaceable for high-fidelity video, multi-channel data acquisition, and fast closed-loop RF control where timing fidelity and signal purity are non-negotiable.

Availability

OPA4353EA/2K5G4 is available at Aetrix Electronics and suitable for video line driver designs, multi-channel data acquisition systems, and cell phone power amplifier control loops requiring stable component supply, RoHS-compliant packaging, and guaranteed –40°C to +85°C operation.

Supply support for OPA4353EA/2K5G4 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 serving industrial, automotive, and medical markets.

The OPA4353EA/2K5G4 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 test equipment and imaging systems.

FAQ

What is the maximum operating supply voltage for OPA4353EA/2K5G4?

The OPA4353EA/2K5G4 is fully specified from 2.7V to 5.5V and can operate up to 5.5V continuously. Absolute maximum rating is 6.5V, but operation above 5.5V voids parametric guarantees and risks reliability degradation. Always use 0.01µF ceramic bypass capacitors at V+ and V– pins for stable high-frequency performance.

Does OPA4353EA/2K5G4 support true rail-to-rail input at 2.7V supply?

Yes. The OPA4353EA/2K5G4 guarantees rail-to-rail input common-mode range from –0.1V to (V+) + 0.1V across its full 2.7V–5.5V supply range, including at 2.7V. This allows direct interfacing with sensors or DACs whose outputs swing to ground or near V+, eliminating level-shifting circuitry in low-voltage designs.

Can OPA4353EA/2K5G4 drive a 75Ω coaxial video cable directly?

Yes. The OPA4353EA/2K5G4 is explicitly characterized for 75Ω video line driving per Figure 6 in the datasheet, delivering <0.17% differential gain/phase error with NTSC signals. Its class AB output stage provides ±40mA current and rail-to-rail swing, enabling direct termination without external resistors in G=2 composite video configurations.

What is the thermal resistance (θ_JA) of the SSOP-16 package used by OPA4353EA/2K5G4?

The SSOP-16 package (drawing DBQ) for OPA4353EA/2K5G4 has a junction-to-ambient thermal resistance (θ_JA) of 100°C/W under standard JEDEC test conditions. This value assumes a 1-inch² copper pad with two vias; actual board-level θ_JA depends on PCB layout, copper area, and airflow.

Is OPA4353EA/2K5G4 pin-compatible with other quad op-amps in SSOP-16?

No. The OPA4353EA/2K5G4 uses a proprietary SSOP-16 pinout optimized for quad independence and noise isolation, differing from industry-standard quad op-amp layouts (e.g., TLV2474, LM324). Pin mapping must be verified against the official OPA4353 datasheet Figure 1 - substitution requires PCB redesign.