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
- Baby warmers & incubators
- Blood pressure monitor
- CPAP machine
- Dental chairs
- Digital stethoscope
- Electric toothbrush
- Electronic hospital bed & bed control
- Electronic thermometer
- Endoscope
- Guitar amplifier & other music instrument amplifier
- Interconnect/distribution box
- Keypad & UI module
- Massage chairs
- Motorized electronic wheel chair
- Operation tables
- Piano, keyboard & synthesizer
- Portable ultrasound
- Premium ultrasound
- Professional audio amplifier (rack mount)
- Professional audio mixer/control surface
- Professional speaker systems
- Standard ultrasound
- Treadmill
- Turntable
- Wearable fitness & activity monitor
Personal electronics
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDR328.PDF (85 K)
Detailed schematic diagram for design layout and components
TIDC032.ZIP (2424 K)
Detailed schematic diagram for design layout and components
TIDR329.PDF (145 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC223.ZIP (1977 K)
Design file that contains information on physical board layer of design PCB
Products
Includes TI products in the design and potential alternatives.
Audio op amps
OPA1604 — Quad, SoundPlus High-Performance, Bipolar-Input Audio Op Amp
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | User guide | Active Volume Control for Professional Audio Design Guide | Jan. 08, 2014 |
Support & training
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