Overview

The NE5532 (NE5532P) is a dual high-performance operational amplifier IC manufactured by Texas Instruments and other leading semiconductor vendors. Renowned in the audio engineering industry as a standard workhorse, it offers exceptional AC and DC characteristics.

Featuring an ultra-low input noise voltage density of 5 nV/Hz5\text{ nV}/\sqrt{\text{Hz}} at 1 kHz1\text{ kHz}, a 10 MHz10\text{ MHz} gain bandwidth product, a high slew rate of 9 V/μs9\text{ V}/\mu\text{s}, and the ability to drive 600 Ω600\ \Omega loads directly, the NE5532 is heavily utilized in high-end audio preamplifiers, studio mixing consoles, active crossovers, equalizers, and precision instrumentation.

Quick reference

Channels2 (Dual Operational Amplifier)
Supply Voltage (Split Rail)±3 V\pm 3\text{ V} to ±20 V\pm 20\text{ V} DC
Supply Voltage (Single Rail)6 V6\text{ V} to 40 V40\text{ V} DC
Gain Bandwidth Product10 MHz10\text{ MHz}
Slew Rate9 V/μs9\text{ V}/\mu\text{s}
Equivalent Input Noise5 nV/Hz5\text{ nV}/\sqrt{\text{Hz}} at 1 kHz1\text{ kHz}
Output Load Drive600 Ω600\ \Omega load capability at 10 VRMS10\text{ V}_{\text{RMS}}
Package8-pin DIP / SOIC-8

Pinout (DIP-8 / SOIC-8 Package)

text
             ┌───┴───┐
       1OUT 1│ 1   8 │ V+ (VCC)
      1IN-  2│       │ 7 2OUT
      1IN+  3│ NE5532│ 6 2IN-
   V- (GND) 4│       │ 5 2IN+
             └───────┘
PinNameTypeDescription
11OUTAnalog OutputOp-Amp 1 Output
21IN-Analog InputOp-Amp 1 Inverting Input
31IN+Analog InputOp-Amp 1 Non-Inverting Input
4V-PowerNegative Supply (V−V- or GND for single supply)
52IN+Analog InputOp-Amp 2 Non-Inverting Input
62IN-Analog InputOp-Amp 2 Inverting Input
72OUTAnalog OutputOp-Amp 2 Output
8V+PowerPositive Supply (V+V+ or VCCV_{CC})

Specifications

ParameterSymbolMinTypMaxUnitConditions
Supply Voltage (Split)VCC±V_{CC\pm}±3\pm 3±15\pm 15±20\pm 20VDual power rails
Input Noise Voltageene_n—5.08.0nV/√Hzf=1 kHzf = 1\text{ kHz}
Unity Gain BandwidthGBWGBW8.010.0—MHzVCC=±15VV_{CC} = \pm 15\text{V}
Slew RateSRSR6.09.0—V/µsVCC=±15V,RL=600 ΩV_{CC} = \pm 15\text{V}, R_L = 600\ \Omega
Input Bias CurrentIIBI_{IB}—200800nATA=25∘CT_A = 25^\circ\text{C}
Input Offset VoltageVIOV_{IO}—0.54.0mVTA=25∘CT_A = 25^\circ\text{C}
Quiescent Supply CurrentICCI_{CC}—8.016.0mADual op-amp total, no load

Typical Applications

Audio Preamplifier Circuit (Non-Inverting Gain = 11)

text
        Audio Input ───► [3: 1IN+] ──┐
                                     │   NE5532
                                     ├───► [1: 1OUT] ───► Audio Output
                                     │
                        [2: 1IN-] ───┼─── R_feedback (10k) ───┐
                                     │                        │
                                     └─── R_ground (1k) ──────┴── GND

Common mistakes

  • Operating with single supply without proper DC biasing: The NE5532 is a bipolar-input op-amp optimized for dual split rails (±15V\pm 15\text{V}). When powered from a single supply (e.g. 12V12\text{V} and GND), inputs must be biased to half-supply (VCC/2V_{CC}/2) with AC-coupling capacitors.
  • Ignoring high input bias current: Unlike JFET op-amps (such as TL072 with picoamp bias currents), NE5532 has a bipolar input stage drawing around 200 nA200\text{ nA} input bias current. High input resistor values (>100 kΩ> 100\text{ k}\Omega) can create noticeable DC offset errors.

Notes

  • NE5532 vs TL072: NE5532 has significantly lower voltage noise (5 nV/Hz5\text{ nV}/\sqrt{\text{Hz}} vs 18 nV/Hz18\text{ nV}/\sqrt{\text{Hz}}) and higher current drive, making it superior for low-impedance audio paths. TL072 has JFET inputs with near-zero input bias current, better suited for high-impedance guitar pickups or sensor buffers.

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