Active Volume Control for Professional Audio

(ACTIVE) TIPD136

Description & Features

Technical Documents

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Key Document

Description

This TI Verified Design implements a split-supply, high-performance volume control which attenuates a professional line-level audio signal with minimal distortion and noise. An input buffer preserves the behavior of the system independent of the audio input source impedance. A radio frequency (RF) filter on the circuit front end removes noise from outside the audio band, while a bidirectional transient voltage suppressor (TVS) diode protects against overvoltage spikes.

Features
  • Input and Output: Professional line-level audio signal (+4 dBu / 1.228 VRMS)
  • Includes RF filter and over voltage protection
  • THD+N at 1 kHz: < 0.0005% (-106 dB)
  • Gain deviation (30% to 100% potentiometer rotation): ±1.5 dB
  • Supply voltage: ±15 V
  • Utilizes OPA1604 High-Performance Audio  Operational Amplifier

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.


  



Schematic/Block Diagram

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Test Data

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Design Files

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Bill of Materials (BOM)

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TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
OPA1604  OPA1602, OPA1604 SoundPlus High-Performance, Bipolar-Input Audio Op Amp  Operational amplifiers (op amps)  Sample & Buy Not Available

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
OPA1604 Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (1)
Title Abstract Type Size (KB) Date Views TI Recommends
PDF 879 08 Jan 2014 24
Selection guides (1)
Title Abstract Type Size (KB) Date Views
PDF 4555 08 Nov 2016 136
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 1977 09 Jan 2014 6
PDF 145 09 Jan 2014 2
PDF 85 09 Jan 2014 7
Related Tools & Software

Software (3)



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