Active Volume Control for Professional Audio
TIPD136
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
This product has been released to the market and is available for purchase. For some products, newer alternatives may be available.
See the Important Notice and Disclaimer covering reference designs and other TI resources.
Key Document
- Active Volume Control for Professional Audio Design Guide
(PDF 879 KB)
08 Jan 2014
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TIPD136 Design File
(ZIP 2424 KB)
08 Jan 2014
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
See the Important Notice and Disclaimer covering reference designs and other TI resources.
