Texas Instruments SA5532P

Overview

SA5532P from Texas Instruments is a dual low-noise operational amplifier designed for high-fidelity analog signal conditioning in professional audio and precision instrumentation. It delivers 5 nV/√Hz input noise voltage at 1 kHz, 12 MHz unity-gain bandwidth, 100 dB common-mode rejection ratio, and 5 V/μs slew rate, operating across –40°C to +85°C in an 8-pin PDIP package.

For engineers reviewing the SA5532P datasheet, SA5532P pinout, SA5532P application, or SA5532P equivalent, key selection criteria include its extended industrial temperature range, dual-channel configuration with independent inputs/outputs, low-noise performance under ±15 V supply, and compatibility with legacy through-hole PCB layouts requiring robust thermal margin and ESD resilience.

Technical Context

The SA5532P integrates two internally compensated op-amps optimized for unity-gain stability, featuring input protection diodes and output short-circuit protection. Its architecture supports dual-supply operation (±5 V to ±15 V) with rail-to-rail input common-mode range up to ±13 V and output swing within 2 V of rails under 600 Ω load.

It exhibits low distortion (<0.002% THD+N at 1 kHz), high DC open-loop gain (100 V/mV typ), and stable performance over temperature - enabled by matched transistor pairs and proprietary biasing. The device's 30 kΩ minimum input resistance and 100 nA max input bias current support high-impedance sensor interfacing without significant loading error.

Key Specifications

Pinout & Package

SA5532P uses an 8-pin plastic dual in-line package (PDIP), 9.81 mm × 6.35 mm nominal footprint, suitable for through-hole assembly and prototyping. Pin spacing is 2.54 mm, with standard DIP lead form for socket compatibility and manual rework.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-noise op-amp applications.

Compared with NE5532P and OPA2134PA, SA5532P uniquely combines industrial temperature range, integrated input protection, and benchmark 5 nV/√Hz noise - making it the preferred choice for mission-critical analog signal paths where both ruggedness and fidelity are required.

Availability

SA5532P is available at Aetrix Electronics and suitable for pro audio mixer design, broadcast infrastructure signal conditioning, and industrial sensor interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for SA5532P 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 leader specializing in analog and embedded processing technologies, with decades of heritage in high-performance op-amp design and manufacturing excellence.

The SA5532P belongs to TI's legacy precision op-amp product line, engineered specifically for demanding analog signal chains in professional audio, broadcast, and industrial instrumentation - where low noise, wide bandwidth, and thermal robustness are non-negotiable.

FAQ

What is the maximum supply voltage for SA5532P?

The absolute maximum supply voltage for SA5532P is ±18 V, but the recommended operating range is ±5 V to ±15 V. Operation beyond ±15 V risks exceeding thermal limits and degrading long-term reliability. The device's internal protection circuitry is validated up to ±15 V under continuous conditions, and TI specifies full electrical performance only within that range. Always use 0.1 μF ceramic bypass capacitors at VCC+ and VCC– pins to maintain stability at higher voltages.

Does SA5532P support single-supply operation?

SA5532P is not optimized for true single-supply operation due to its bipolar input stage and lack of rail-to-rail input/output capability. While it can function with a single positive supply and ground reference (e.g., +15 V and GND), the input common-mode range extends only to within ~2 V of the negative rail - limiting usable headroom. For reliable single-supply designs, external level-shifting or biasing networks are required. SA5532P's native strength lies in dual-supply configurations typical of professional audio and instrumentation systems.

How does SA5532P differ from NE5532P?

SA5532P and NE5532P share identical electrical specifications and pinout, but differ in temperature qualification: SA5532P is rated for –40°C to +85°C, while NE5532P is limited to 0°C to +70°C. This makes SA5532P suitable for industrial enclosures, outdoor broadcast units, and automotive-adjacent test equipment where ambient extremes occur. Both parts use the same PDIP-8 package and marking "SA5532P" vs "NE5532P" on the body, enabling drop-in replacement where thermal margin is sufficient.

Is SA5532P RoHS compliant?

Yes, SA5532P is RoHS compliant, with lead finish specified as NiPdAu (nickel-palladium-gold) and full compliance verified per EU Directive 2011/65/EU. The part carries the "RoHS Yes" designation in TI's official packaging addendum, and all active orderable variants (e.g., SA5532P, SA5532P.A) meet lead-free soldering requirements for reflow profiles up to 260°C peak. No exemptions apply, and the device contains no intentionally added mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE).

What is the typical input bias current of SA5532P?

The typical input bias current of SA5532P is 200 nA at 25°C, with a maximum of 1000 nA across the full –40°C to +85°C operating range. This value reflects the bipolar junction transistor (BJT) input stage design, which trades ultra-low bias current for superior noise performance and high slew rate. For applications requiring sub-nanoampere bias (e.g., photodiode transimpedance amps), FET-input alternatives like OPA2134PA should be considered - though they sacrifice noise density and output drive capability compared to SA5532P.