LM3886

ACTIVE

68W, 1 Ch, 20-94V supply stereo Class-AB amplifier w/ Mute

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Product details

Parameters

Audio input type Analog Input Architecture Class-AB Speaker channels (Max) Mono Power stage supply (Max) (V) 94 Power stage supply (Min) (V) 20 Load (Min) (ohms) 4 Output power (W) 68 SNR (dB) 110 THD + N @ 1 kHz (%) 0.03 Iq (Typ) (mA) 50 Control interface Hardware Closed/open loop Open Analog supply (Min) (V) 20 Analog supply (Max) (V) 84 Power to parallel bridge tied load (Max) (W) 68 PSRR (dB) 120 Operating temperature range (C) 0 to 70 open-in-new Find other Speaker amps

Package | Pins | Size

TO-220 (NDA) 11 195 mm² 20.02 x 9.765 open-in-new Find other Speaker amps

Features

  • 68W Cont. Avg. Output Power into 4Ω at VCC = ±28V
  • 38W Cont. Avg. Output Power into 8Ω at VCC = ±28V
  • 50W Cont. Avg. Output Power into 8Ω at VCC = ±35V
  • 135W Instantaneous Peak Output Power Capability
  • Signal-to-Noise Ratio ≥ 92dB
  • An Input Mute Function
  • Output Protection from a Short to Ground or to the Supplies via Internal Current Limiting Circuitry
  • Output Over-Voltage Protection against Transients from Inductive Loads
  • Supply Under-Voltage Protection, not Allowing Internal Biasing to Occur when |VEE| + |VCC| ≤ 12V, thus Eliminating Turn-On and Turn-Off Transients
  • 11-Lead TO-220 Package
  • Wide Supply Range 20V - 94V

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Description

The LM3886 is a high-performance audio power amplifier capable of delivering 68W of continuous average power to a 4Ω load and 38W into 8Ω with 0.1% THD+N from 20Hz–20kHz.

The performance of the LM3886, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe) protection circuitry, puts it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including shorts to the supplies, thermal runaway, and instantaneous temperature peaks.

The LM3886 maintains an excellent signal-to-noise ratio of greater than 92dB with a typical low noise floor of 2.0µV. It exhibits extremely low THD+N values of 0.03% at the rated output into the rated load over the audio spectrum, and provides excellent linearity with an IMD (SMPTE) typical rating of 0.004%.

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TPA3116D2 ACTIVE 50-W stereo, 100-W mono, 4.5- to 26-V supply, analog input Class-D audio amplifier w/ SpeakerGuard™ This product is a lower power 50-W stereo analog-input class D amplifier with hybrid modulation.

Technical documentation

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Type Title Date
* Datasheet LM3886 Overture Audio Pwr Amp Series High-Perf 68W Audio Pwr Amp w/Mute datasheet (Rev. C) Mar. 21, 2013
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application notes AN-1192 Overture Series High Power Solutions (Rev. B) May 01, 2013
Application notes AN-898 Audio Amplifiers Utilizing: SPiKe Protection (Rev. B) May 01, 2013
More literature Die D/S LM3886 MDC High-Performance 68W Audio Power Amplifier With Mute Sep. 27, 2012

Design & development

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Design tools & simulation

SIMULATION MODELS Download
SNAM039B.ZIP (7 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNAM040B.TSC (283 KB) - TINA-TI Reference Design
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SNAM041B.ZIP (52 KB) - PSpice Model
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(NDJ) 11 View options
TO-220 (NDA) 11 View options

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