TIPD136
Active Volume Control for Professional Audio
TIPD136
Overview
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
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
Detailed schematic diagram for design layout and components
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Design file that contains information on physical board layer of design PCB
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Technical documentation
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