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LA4570 The Sanyo Denki LA4570 is a dual preamplifier integrated circuit with built-in power amplifiers for driving headphones. It offers a closed loop gain of 40dB and operates on less than three volts.
Mfr Part #:

LA4570

Available from 1 distributors
Mfr Name: Sanyo Denki
Sanyo Denki
The Sanyo Denki LA4570 is a dual preamplifier integrated circuit with built-in power amplifiers for driving headphones. It offers a closed loop gain of 40dB and operates on less than three volts.
✓ Total Stock: 24 pcs
$ Price Range: $1.87

LA4570 Available from 1 distributor

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✓ Non-Authorised
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LA4570 Specifications Quick View

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LA4570 Description

Short technical summary and product information.

The LA4570 is a single-chip dual preamplifier integrated circuit manufactured by Sanyo Denki. It is designed for portable audio applications and includes built-in power amplifiers capable of driving headphones. This IC performs the first stage of amplification for weak signals from an audio head.

 

Key specifications include a closed loop gain of 40 dB at 1 kHz NAB, making it suitable for high-quality headphone amplifiers. The device operates on less than three volts and features a built-in ripple filter. A mute function is also integrated, activated by applying +1.5V to pin 7, though this feature may not be utilized in all applications.

 

This vintage IC is no longer in production but remains popular among electronics enthusiasts for building custom audio equipment. Its design offers a better frequency response due to a unique output ground level powering method. The recommended headphone impedance is 16 Ω.

LA4570 Quick Information

Product Type: Audio Chip
Canonical Name: LA4570 Dual Preamplifier Integrated Circuit
Subcategory: Special Purpose

LA4570 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

LA4570 Estimated Pricing

Qty Low High
1+ $1.87 $1.87

Estimated market price range - modelled values for guidance only, not live distributor offers.

LA4570 Features

  • Dual preamplifier integrated circuit.
  • Built-in power amplifiers for headphones.
  • 40 dB closed loop gain at 1 kHz.
  • Operates on less than three volts.
  • Integrated ripple filter.

LA4570 Applications

  • Used in audio signal processing devices
  • Suitable for portable audio equipment
  • Ideal for integrated audio amplification
  • Compatible with standard headphones

LA4570 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the operating voltage of the LA4570?

The LA4570 operates at less than 3V.

What is the headphone impedance for the LA4570?

The typical headphone impedance is 16Ω.

Does the LA4570 include a ripple filter?

Yes, it has a built-in ripple filter.

What is the gain of the preamplifier in the LA4570?

The preamplifier gain is 40dB at 1kHz NAB.

Is there a mute function in the LA4570?

Yes, a mute function is available and activated by applying +1.5V to pin 7.

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