NE5532AD8 - Dual Low Noise Op-Amp, 8-SOIC, 5nV/√Hz | onsemi
N.º da peça: NE5532AD8 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $0.62 | $0,62 |
| 10 | $0.51 | $5,10 |
| 100 | $0.39 | $39,00 |
| 500 | $0.3 | $150,00 |
| 1.000 | $0.25 | $250,00 |
NE5532AD8 Visão geral
An operational amplifier (op-amp) is a DC-coupled high-gain electronic voltage amplifier with differential inputs and, usually, a single-ended output. It is the fundamental analog building block inside audio preamplifiers, active filters, instrumentation stages, servo loops, ADC input buffers, and DAC output I/V converters. The NE5532 family belongs to the "low-noise audio" op-amp class — a category that improves upon generic parts such as the 1458 by combining low voltage noise, wide bandwidth, and strong output drive into one device.
Key features include low harmonic distortion (typically 0.002 % at 1 kHz into 600 Ω), high output current that can drive 600 Ω headphone loads directly, large output voltage swing (≈ ±13 V on ±15 V supplies), and excellent channel separation around 110 dB at 1 kHz. The "A" suffix denotes the higher-precision NE5532A variant with tighter input-offset voltage (typically 0.5 mV versus 0.5 mV for the non-A) and improved AC characteristics versus the original NE5532, while remaining pin-compatible with the standard NE5532 socket.
Architecturally, the NE5532A uses a bipolar-junction input stage with emitter-degeneration resistors, a PNP common-emitter second stage, and an NPN class-AB output stage. Compensation is built into the die (no external capacitor required), which simplifies PCB design but caps stable unity-gain operation. Designers should treat the device as a "single-supply-unfriendly" part when planning ground-referenced single-rail circuits; a mid-rail bias is required for true ground sensing.
Typical applications include high-fidelity audio preamplifiers, mixing consoles, microphone preamps, RIAA phono stages, line drivers, active crossovers, test-instrumentation signal conditioners, and ADC/DAC interface buffers. The 8-pin SOIC footprint is well-suited to high-density PCB designs and is one of the most widely supported DIP-socket IC sockets on adapter boards.
When designing with the NE5532AD8, derate output current with increasing junction temperature, mind the input common-mode range that does not include the negative rail, and provide a solid ground pour for the exposed copper pad of the SOIC to keep the junction temperature below 150 °C. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
Alternativas drop-in para NE5532AD8 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com NE5532AD8 (mesmo formato e footprint) — diferindo em Amplifier Type, Operating Temperature Range, Package, Slew Rate.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
NE5532D
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →NE5532AD8R2
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NE5532DR
✅ Drop-In✓ Em estoque
Consulte o preço
Ver ficha técnica →OPA2134PA
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NJM5532DD
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD826ANZ
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
NE5532AD8 Classificações máximas e características elétricas
| Number of Channels | 2 (Dual) |
| Amplifier Type | Operational Amplifier |
| Supply Voltage (Single) | 6 V to 40 V |
| Supply Voltage (Dual) | ±3 V to ±20 V |
| Unity-Gain Bandwidth | 10 MHz typical |
| Slew Rate | 9 V/µs typical |
| Total Harmonic Distortion (THD) | 0.002 % at 1 kHz, 600 Ω load |
| Channel Separation | 110 dB at 1 kHz typical |
| Faixa de temperatura de operação | 0 °C to +70 °C |
| Encapsulamento | 8-pin SOIC (D8, SO-8), 3.90 mm body width |
| Tipo de montagem | Surface Mount |
| MSL (Moisture Sensitivity Level) | MSL-1 / 1 (unlimited floor life per JEDEC J-STD-020) |
| Status RoHS | Compliant |
| Lead-Free | Yes |
| Compensation | Internally compensated (no external cap required) |
| Input Protection | Diodes on both inputs |
| Output Protection | Short-circuit protection |
Configuração de pinos do NE5532AD8
| Pino 1 | OUT A — Channel A output |
| Pino 2 | IN- A — Channel A inverting input |
| Pino 3 | IN+ A — Channel A non-inverting input |
| Pino 4 | V- — Negative supply voltage |
| Pino 5 | IN+ B — Channel B non-inverting input |
| Pino 6 | IN- B — Channel B inverting input |
| Pino 7 | OUT B — Channel B output |
| Pino 8 | V+ — Positive supply voltage |
Aplicações típicas
NE5532AD8 é adequado para 7 aplicaçãos: High-Fidelity Audio Preamplifier, RIAA Phono Equalizer (MM Phono Stage), Active 2-Way Crossover for PA Loudspeaker, Microphone Preamplifier (Low-Noise Front-End), Test & Measurement Instrumentation Buffer, ADC / DAC Analog Interface Buffer, Servo and Active Filter Stage in Industrial Control.
High-Fidelity Audio Preamplifier
The onsemi NE5532AD8 is the canonical dual op-amp for hi-fi preamplifiers thanks to its 5 nV/√Hz input voltage noise density, 0.002 % THD into 600 Ω at 1 kHz, and ~110 dB channel separation. In a stereo line-stage the part sits between the source selector (CD, phono, tuner) and the power-amp input buffer; the channel A and channel B halves each provide inverting or non-inverting gain up to ~10×, with AC-coupling at the input to remove DC offset of the non-A grade. Designers frequently pair the NE5532AD8 with audiophile-grade film input capacitors (e.g., 2 µF WIMA MKS2) and a discrete low-Z regulated supply to extract maximum dynamic range. Compared with the AD826, the NE5532AD8 wins on voltage-noise floor but loses on slew-rate headroom above 30 kHz, so it remains the default for full-range audio rather than ultrasonic instrumentation.
Recomendado
RIAA Phono Equalizer (MM Phono Stage)
The NE5532AD8 is widely used as the active gain element inside moving-magnet RIAA phono preamps. The dual-package topology lets the designer realize the standard RIAA curve with two integrator stages per channel — one for the 75 µs pole and one for the 318 µs/3180 µs zeros — and the low voltage noise (5 nV/√Hz) is critical because MM cartridges typically deliver only ~0.5 mV to 5 mV at the input. The NE5532A's tighter input-offset voltage simplifies DC servo design and allows a single-supply implementation in modern USB phono preamps. Designers should keep input traces short, use shielded twisted pair, and add an input ground-reference resistor to avoid ground loops between turntable and preamp.
Recomendado
Active 2-Way Crossover for PA Loudspeaker
In an active 2-way loudspeaker crossover, the NE5532AD8 implements the low-pass and high-pass Sallen-Key filters for the woofer and tweeter sections in a single 8-pin SOIC per channel. The 10 MHz gain-bandwidth product allows 24 dB/octave Butterworth or Linkwitz-Riley slopes with a 2.5 kHz crossover frequency while keeping the 1 kHz distortion at 0.002 %. The output drive capability (600 Ω load) supports direct connection to most power-amp input stages without a buffer. A two-board stereo 2-way system therefore requires just two NE5532AD8 devices plus passive RC networks, which is why this part is the workhorse of DIY PA kits from companies like Parts Express and 41Hz Audio.
Recomendado
Microphone Preamplifier (Low-Noise Front-End)
The NE5532AD8 is suitable as a low-noise microphone front-end for dynamic and ribbon microphones when paired with a transformer-coupled input and 48 V phantom-block network. The bipolar input stage accepts the common-mode swing needed for differential mic inputs and provides predictable behavior at the input-protection diodes. With an external 2 kΩ source impedance and 60 dB of gain, the part remains well below the 5 nV/√Hz noise floor that matters most in the 20 Hz to 20 kHz band. For condenser microphones that need 48 V phantom, designers add a phantom-block network and use DC-servo feedback to keep the input stage centered.
Recomendado
Test & Measurement Instrumentation Buffer
In bench instruments such as arbitrary-waveform generators, spectrum analyzers, and signal-source conditioners, the NE5532AD8 acts as a 50 Ω / 600 Ω output buffer with low harmonic distortion. The 9 V/µs slew rate permits clean sine-wave generation to 100 kHz (within the 10 MHz gain-bandwidth product), and the 600 Ω drive capability simplifies direct connection to legacy instrumentation loads. Compared with lower-cost parts, the NE5532AD8 wins because its open-loop output impedance at audio frequencies is exceptionally low, which means the closed-loop output impedance stays below 0.1 Ω with a simple feedback network. Designers should add a small series output resistor (10–33 Ω) to isolate capacitive loads and prevent oscillation.
Recomendado
ADC / DAC Analog Interface Buffer
The NE5532AD8 is one of the most commonly deployed I/V converters and antialiasing filter elements after high-resolution audio ADCs and before audio DACs. In a DAC reconstruction filter, the dual package implements a 2-pole Sallen-Key low-pass with a corner around 50 kHz, while the 5 nV/√Hz noise floor preserves the dynamic range of 16-bit and 24-bit converters. In an ADC front end, the same op-amp acts as a unity-gain differential-to-single-ended converter for balanced line inputs. Designers usually match the resistor ratios to keep DC offset well below 1 mV, ensuring the output sits inside the input common-mode range of the converter.
Recomendado
Servo and Active Filter Stage in Industrial Control
Industrial servo drivers, motor-speed controllers, and instrumentation amplifiers frequently use the NE5532AD8 to implement active filters, current-loop controllers, and integrator stages. The bipolar input stage tolerates the large common-mode swings in 4–20 mA current loops and the ±20 V supply range lets the op-amp operate directly from ±15 V industrial rails without level shifting. In a Type-III servo compensator for a brushless-DC motor controller the dual package implements the proportional and integral terms in a single device, which reduces PCB area versus discrete op-amps. Designers must keep input traces short to minimize EMI pickup from PWM-driven motor phases.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para NE5532AD8 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | NE5532D | NE5532AD8R2 | NE5532DR | OPA2134PA | NJM5532DD | AD826ANZ |
|---|---|---|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments | NJR (New Japan Radio) | Analog Devices |
| Package | SOIC-8 (D8) | SOIC-8 (D8) - same | SOIC-8 (D8) - same | SOIC-8 (D8) - same | SOIC-8 (D8) - same | SOIC-8 (D8) - same | SOIC-8 (D8) - same |
| Number of Channels | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| GBW (MHz, typical) | 10 | 10 | 10 | 10 | 8 | 10 | 50 |
| Slew Rate (V/µs) | 9 | 9 | 9 | 9 | 20 | 9 | 350 |
| Voltage Noise Density (nV/√Hz) | 5 | 5 | 5 | 5 | 8 | 5 | 15 |
| Supply Voltage Range | ±3 V to ±20 V (6 V to 40 V single) | ±3 V to ±20 V | ±3 V to ±20 V | ±3 V to ±20 V | ±2.5 V to ±18 V | ±3 V to ±20 V | ±5 V to ±15 V |
| Drive Capability | 600 Ω load | 600 Ω load | 600 Ω load | 600 Ω load | 600 Ω load | 600 Ω load | 150 Ω load |
| RoHS Compliance | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- Best-in-class voltage noise floor for low-cost audio op-amps (vs AD826ANZ)
- Proven 600 Ω line-driver output stage (vs NJM5532DD)
- Audiophile-grade drop-in upgrade available without PCB change (vs OPA2134PA)
Notas de projeto
Estimated: at a worst-case continuous load of 30 mA per channel into a 600 Ω headphone load on ±15 V supplies, the NE5532AD8 dissipates about 0.9 W total. This power stays well within the SOIC-8 thermal budget without a heatsink provided the PCB copper pour is at least 100 mm² (1 sq in). For dual mono into 32 Ω headphone loads, derate the dissipation to keep the junction rise below 50 °C above ambient. Use a regulated low-impedance supply rail to avoid the NE5532A's PSRR saturation at high frequencies.
Place 100 nF ceramic decoupling capacitors as close as possible to the V+ (pin 8) and V- (pin 4) of the NE5532AD8, and add a bulk 10 µF electrolytic within 50 mm for low-frequency noise rejection. Match the layout symmetry between channel A and channel B - identical trace widths and lengths preserve the 110 dB channel separation figure. Use a contiguous ground pour on the top layer to minimize ground-loop inductance; avoid splitting the ground plane under the input or feedback traces.
Do not operate the NE5532AD8 below the 6 V single-supply minimum (or ±3 V dual-supply) per the NE/SA/SE5532/5532A specification, otherwise the input common-mode range collapses and the input stage may saturate. Confirm that the input common-mode voltage always sits at least 3 V inside the rails on ±15 V supplies. Also avoid driving large capacitive loads (>1 nF) directly from the output because the part is internally compensated and can oscillate with low-impedance loads - insert a 33–100 Ω series resistor at the output if the load is capacitive.
For an RIAA phono stage or microphone preamp, twist the input traces or use a guarded layout to reject mains-frequency hum. According to the onsemi datasheet, the input bias current of the NE5532AD8 is approximately 200 nA per channel, so the input impedance can be kept above 47 kΩ without major offset error. Designers should provide a DC return path (typically 100 kΩ to ground) on every non-inverting input, otherwise the bias current charges the input capacitance and the stage saturates at start-up.
Informações de conformidade
RoHS compliant per onsemi product page. Lead-free SOIC-8 package suitable for Pb-free reflow per JEDEC J-STD-020. AEC-Q100 not applicable — this is a commercial-grade op-amp; choose automotive-grade equivalents such as NE5532A-Q1 or OPA2134PA-Q1 for automotive designs.
