NXP Semiconductors NE5234D,518

Overview

NE5234D,518 from Philips Semiconductors is a matched quad low-voltage operational amplifier with rail-to-rail input and output operation, 2.5 MHz unity-gain bandwidth, 0.8 V/µs slew rate, and 700 µA per amplifier supply current. It delivers 5.5 V_PP into 600 Ω and supports single-supply operation down to +1.8 V, making it suitable for portable instrumentation and automotive signal conditioning.

For engineers reviewing the NE5234D,518 datasheet, NE5234D,518 pinout, NE5234D,518 application, or NE5234D,518 equivalent, key selection criteria include rail-to-rail I/O capability at low voltage, matched amplifier performance across temperature, output inversion prevention, and SO14 package compatibility with space-constrained PCB layouts.

Technical Context

The NE5234D,518 integrates four precision op-amps on a single die with matched offset voltage (≤0.4 mV typical), offset drift (4 µV/°C), and input bias current (25–70 nA) across all amplifiers. Its input stage operates 250 mV beyond both rails, and its output swings within 50 mV of each rail over the full ±1 to ±2.75 V dual-supply or +2 to +5.5 V single-supply range.

It features built-in output inversion prevention via internal clamping circuitry that avoids phase reversal during common-mode overdrive, and includes ESD protection (2000 V HBM), short-circuit protection, and thermal shutdown. The device is specified for 0 °C to +70 °C operation and uses standard CMOS-compatible fabrication.

Key Specifications

Pinout & Package

NE5234D,518 is housed in a 14-pin plastic small outline (SO) package (SOT108-1), 3.9 mm body width, surface-mount compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2464IDR and LMV324IDR, the NE5234D,518 uniquely combines rail-to-rail input/output, monolithic amplifier matching, and output inversion prevention - making it irreplaceable in safety-critical, low-voltage sensor interfaces where signal fidelity and stability under overdrive are mandatory.

Availability

NE5234D,518 is available at Aetrix Electronics and suitable for automotive electronics, portable medical instrumentation, and remote industrial metering requiring stable component supply and long-term obsolescence management.

Supply support for NE5234D,518 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

Philips Semiconductors (now NXP Semiconductors) is a Dutch semiconductor company founded in 1953, known for pioneering analog ICs, RF solutions, and automotive electronics.

The NE5234D,518 belongs to Philips' precision analog amplifier product line, designed specifically for low-voltage, rail-to-rail signal conditioning in automotive, medical, and industrial sensor systems where matched performance and reliability are essential.

FAQ

What is the operating temperature range for the NE5234D,518?

The NE5234D,518 is rated for operation from 0 °C to +70 °C. This commercial-grade specification is defined in the ordering information table and confirmed in the Recommended Operating Conditions section of the Philips datasheet. It is distinct from the SA5234D variant, which extends to –40 °C to +85 °C. The NE5234D,518's thermal impedance is 115 °C/W in the SO14 package, requiring appropriate PCB copper area for power dissipation at full load.

Does the NE5234D,518 support true rail-to-rail input operation?

Yes, the NE5234D,518 supports rail-to-rail input operation with a common-mode voltage range extending 250 mV beyond both supply rails - i.e., from V_EE – 0.25 V to V_CC + 0.25 V. This is explicitly stated in the FEATURES list and verified in the DC Electrical Characteristics table under V_CM. The input stage remains linear and functional even when driven slightly outside the supply rails, enabling robust interfacing with sensors and DACs in low-voltage systems.

What is the maximum output current capability of the NE5234D,518?

The NE5234D,518 provides ±15 mA peak output current per amplifier, as specified in the FEATURES section. This is validated in the DC Electrical Characteristics table under "Peak load current sink and source", where minimum values of 10 mA are guaranteed over the full temperature range. The device includes internal short-circuit protection, but sustained operation above ±10 mA requires careful thermal design due to its 115 °C/W θ_JA in the SO14 package.

How does output inversion prevention work in the NE5234D,518?

The NE5234D,518 incorporates dedicated internal circuitry - illustrated in Figure 2 of the datasheet - that clamps the differential input during overdrive conditions to prevent phase reversal. Unlike conventional op-amps, this feature ensures the output remains monotonic and predictable even when the input common-mode voltage exceeds the supply rails. This behavior is critical in closed-loop systems like motor drive error amplifiers, where inversion could cause catastrophic instability. The NE5234D,518 implements this without external components.

Is the NE5234D,518 pin-compatible with other quad op-amps in SO14 packages?

No, the NE5234D,518 has a unique pinout optimized for matched quad operation and output inversion prevention - shown in Figure 1 of the datasheet. While it shares the SO14 (SOT108-1) mechanical footprint with many quad op-amps, its pin assignments (e.g., GND on Pin 11, V_CC on Pin 4, interleaved inputs/outputs) differ from industry-standard layouts like the LM324 or TLV2464. Direct replacement would require PCB redesign. Always verify pin mapping before substitution.