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
Industrial
- Air Circuit Breaker (ACB)
- Aircraft cockpit display
- Blood pressure monitor
- CPAP machine
- Electronic bed & chair
- Endoscope
- Guitar amplifier & other music instrument amplifier
- Interconnect/distribution box
- Piano, keyboard & synthesizer
- Portable ultrasound
- Premium ultrasound
- Professional audio amplifier (rack mount)
- Professional audio mixer/control surface
- Professional speaker systems
- Standard ultrasound
- Turntable
Personal electronics
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
Start development
Technical documentation
| Type | Title | Date | ||
|---|---|---|---|---|
| * | User guide | Active Volume Control for Professional Audio Design Guide | Jan. 08, 2014 |
Support & training
TI E2E™ forums with technical support from TI engineers
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