DS4420N+T&R

Audio Amplifiers Overview

The DS4420N+T&R is a fully differential, I2C programmable-gain amplifier designed for audio applications. It features a gain range from -35dB to +25dB with 3dB adjustment steps. The device operates on a single 5V supply (4.5V to 5.5V) and supports up to eight units on one bus via address pins A0-A2. It includes mute and standby modes, low output noise, and a 20kHz bandwidth. Packaged in a 14-pin TDFN (3mm x 3mm), it drives loads as low as 50Ω.

Audio Amplifiers Feature Summary

• Fully differential architecture with I2C-controlled gain ranging from -35dB to +25dB
• Supports up to eight devices on a common bus using three address inputs
• Includes dedicated mute and standby modes for power management
• Optimized to drive low-impedance loads down to 50 ohms

Audio Amplifiers Applications

• Telephone headsets
• Audio volume control
• Microphone gain control

Audio Amplifiers Procurement Notes

Verify the specific 'T&R' suffix indicates tape-and-reel packaging rather than tube packaging when ordering. Confirm the manufacturer designation matches Analog Devices Inc./Maxim Integrated specifications. Ensure the component meets RoHS3 compliance requirements for your assembly process. Validate that the exposed paddle connection aligns with your PCB ground plane design.

Audio Amplifiers Selection Notes

Select this component for designs requiring precise digital gain control of differential audio signals. It is suitable for systems needing multiple amplifiers on a single I2C bus. Consider its 20kHz bandwidth and low distortion characteristics for high-fidelity audio paths. Ensure the system operates within the specified 4.5V to 5.5V supply voltage range.

Audio Amplifiers Part Context

The DS4420 series consists of I2C programmable-gain amplifiers optimized for audio signal processing. The DS4420N+ variant specifically denotes the lead-free version housed in a 14-pin TDFN package. This family allows for flexible gain configuration without external analog components, simplifying circuit design for portable and fixed audio equipment.

Audio Amplifiers Replacement Considerations

Consult official documentation for direct substitutes. Verify pin compatibility and electrical parameters before swapping.