Texas Instruments OPA4353EA/250G4

Overview

OPA4353EA/250G4 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, ±40mA output drive, and 10mV rail-to-rail output swing at 10kΩ load - enabling high-fidelity signal conditioning in space-constrained data acquisition and video driver circuits.

For engineers reviewing the OPA4353EA/250G4 datasheet, OPA4353EA/250G4 pinout, OPA4353EA/250G4 application, or OPA4353EA/250G4 equivalent, this page provides verified technical context, SSOP-16 package mapping, real-world application cards for A/D converter driving and composite video line driving, and two validated alternative parts with documented functional trade-offs.

Technical Context

The OPA4353EA/250G4 employs a complementary N/P-channel input stage to achieve rail-to-rail input common-mode range extending 100mV beyond supply rails, and a class AB common-source output stage delivering rail-to-rail output swing within 10mV of V+ and V− under light loads. Its unity-gain stability supports direct use in buffer and gain configurations without external compensation.

Each of the four amplifiers operates independently with <0.15µV/V channel separation (dc), ensuring minimal crosstalk in multi-channel systems. The device is fabricated on a 0.6µm CMOS process and specified over –40°C to +85°C, with extended operating range from –55°C to +125°C.

Key Specifications

Pinout & Package

OPA4353EA/250G4 is packaged in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, footprint code DBQ, and thermal resistance θ_JA = 100°C/W. This surface-mount package supports automated assembly and offers improved thermal performance versus SO-14.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4340UA and TLV2464CD, the OPA4353EA/250G4 uniquely combines 44MHz bandwidth, 22V/µs slew, and 5nV/√Hz noise in a quad SSOP-16 package - making it irreplaceable for high-speed data acquisition and broadcast video signal chains where all three parameters are simultaneously required.

Availability

OPA4353EA/250G4 is available at Aetrix Electronics and suitable for data acquisition systems, composite video drivers, cell phone PA control loops, and audio front-ends requiring stable component supply across industrial and consumer production volumes.

Supply support for OPA4353EA/250G4 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 full product continuity, documentation, and manufacturing for the OPAx353 family. TI is a global semiconductor leader specializing in analog and embedded processing technologies.

The OPAx353 series was designed specifically for low-voltage, high-speed signal conditioning in portable and space-constrained systems - emphasizing rail-to-rail operation, low noise, and unity-gain stability without external compensation.

FAQ

What is the maximum operating supply voltage for the OPA4353EA/250G4?

The OPA4353EA/250G4 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. At 5.5V, quiescent current rises to 9mA per amplifier, and output swing remains within 50mV of rails at 1kΩ load - consistent with published SO-14 and SSOP-16 characterization data.

Does the OPA4353EA/250G4 support true rail-to-rail input with signals at V– or V+?

Yes. The OPA4353EA/250G4 guarantees an input common-mode voltage range from (V–) – 0.1V to (V+) + 0.1V, confirmed in the datasheet's "INPUT VOLTAGE RANGE" table. This is achieved via complementary N/P-channel input pairs, allowing direct connection to ground-referenced sensors or V+–tied references without external clamping or level shifting.

Can the OPA4353EA/250G4 drive a 600Ω load at full rail-to-rail swing?

No. At 600Ω, the OPA4353EA/250G4 output swing degrades to within 25–200mV of the rails depending on temperature and supply voltage, as specified in the "OUTPUT" section. For full 10mV swing, a minimum 10kΩ load is required. Driving 600Ω is supported (±40mA output current), but dynamic range is reduced by ~200mV peak-to-peak.

Is the OPA4353EA/250G4 pin-compatible with the SO-14 version OPA4353UA?

No. The OPA4353EA/250G4 uses a 16-pin SSOP (DBQ) package with different pinout than the 14-pin SOIC (D) package of OPA4353UA. Key differences include dedicated V– (Pin 4) and +V (Pin 12) rails in SSOP-16 versus shared V–/V+ pins in SO-14, and NC pins at 8 and 16 in SSOP-16 versus functional pins in SO-14. PCB layout redesign is required for substitution.

What is the typical input bias current of the OPA4353EA/250G4 at 25°C?

The typical input bias current of the OPA4353EA/250G4 is ±0.5pA at 25°C, with a maximum of ±10pA over the full –40°C to +85°C range. This ultra-low value is enabled by its CMOS input stage and is critical for high-impedance sensor interfaces and precision integrators where leakage would otherwise dominate error budgets.