NCS603DTBR2G

Audio Special Purpose Overview

The NCS603DTBR2G is a dual, pop-free audio line driver from onsemi featuring NOCAP architecture to eliminate external DC-blocking capacitors. It operates on a single supply voltage ranging from 2.2 V to 5.5 V and delivers up to 3 VRMS output into a 600 Ω load. The device offers high-fidelity audio performance with a Signal-to-Noise Ratio (SNR) of 105 dB and low Total Harmonic Distortion plus Noise (THD+N). Key features include high power supply rejection ratio (PSRR), adjustable gain via external resistors, and an internal charge pump that generates a negative rail to allow ground-referenced outputs.

Audio Special Purpose Feature Summary

• NOCAP Architecture: Eliminates the need for bulky external DC-blocking capacitors at the outputs by using an internal charge pump to generate a negative supply rail, enabling true ground outputs.
• High Fidelity Audio: Delivers 105 dB SNR and low distortion for high-quality audio reproduction.
• Adjustable Gain: Supports differential input configurations with gain settings adjustable via external resistors.
• Pop/Click Suppression: Integrated circuitry minimizes audible pops and clicks during power-up and power-down sequences.
• Power Supply Rejection: High PSRR (typical 90 dB) ensures clean audio signals despite power supply noise.

Audio Special Purpose Applications

• Set-Top Boxes
• PDP/LCD TVs
• Blu-ray Players and DVD Players
• Home Theater Systems
• Laptops and Notebook PCs
• Audio Amplifiers

Audio Special Purpose Procurement Notes

The NCS603DTBR2G is supplied in a 14-TSSOP package (4.40mm width) in Tape & Reel format. Verify RoHS compliance status as per the manufacturer's ordering information. Ensure the suffix 'DTBR2G' corresponds to the correct packaging and lead-free specifications for your assembly requirements.

Audio Special Purpose Selection Notes

Select this component when space constraints prohibit the use of large coupling capacitors in audio signal paths. It is suitable for applications requiring differential inputs and operation within a 2.2 V to 5.5 V supply range. Note that the device is designed for driving loads such as 600 Ω; ensure the application impedance matches or exceeds recommended values for optimal performance.

Audio Special Purpose Part Context

The NCS603 is part of onsemi's NOCAP™ family of audio line drivers, which integrate charge pump technology to simplify board design by removing external DC-blocking components. The 'DTBR2G' suffix indicates the TSSOP-14 surface-mount package and reel packaging configuration.

Audio Special Purpose Replacement Considerations

When replacing this component, verify compatibility with existing schematic topologies, particularly regarding the NOCAP architecture requirements and pinout assignments. Check for any differences in gain ranges, supply voltage limits, and thermal characteristics if substituting with other stereo line drivers.