AD1992ACPZ

Overview

The AD1992ACPZ is a two-channel, bridge-tied load (BTL) switching audio power amplifier manufactured by Analog Devices. It integrates sigma-delta modulators and a full H-bridge power stage to drive speakers directly from single-ended analog inputs. The device operates with a power supply voltage range of 8 V to 20 V for the output stage, while the analog and digital logic sections require a 5 V supply. Key performance specifications include a signal-to-noise ratio of 102 dB and total harmonic distortion plus noise as low as 0.003%. It features programmable gain amplifiers, pop suppression, and comprehensive protection circuits.

Feature Summary

• Integrates stereo sigma-delta modulation and power stage for high-efficiency Class-D operation
• Includes on-off-mute functionality with pop noise suppression exceeding dynamic range
• Features EMI optimized modulator design to minimize radio frequency interference
• Provides short-circuit and overtemperature protection with active error reporting

Applications

• Advanced televisions
• Compact multimedia systems
• Minicomponents

Procurement Notes

Verify component authenticity through authorized distribution channels or direct manufacturer engagement. Confirm package integrity and pin alignment upon receipt. Ensure storage conditions comply with moisture sensitivity level requirements to prevent internal damage during soldering processes.

Selection Notes

Select this component for designs requiring integrated modulation without external PWM controllers. Evaluate thermal management capabilities based on the exposed pad thermal resistance. Verify that the application clock frequency aligns with the specified 12.288 MHz nominal requirement for optimal noise shaping performance.

Part Context

This part belongs to the AD1992 family of audio switching amplifiers. It utilizes a low-cost DMOS process technology. The device is designed to replace discrete Class-D solutions by combining control logic, modulators, and power MOSFETs into a single integrated circuit.

Replacement Considerations

AD1990

FAQ

How does the AD1992 manage mute transitions?

The device employs a soft-start sequence when MUTE is deasserted to avoid audible pop or click noise. When MUTE is asserted, the output transistors stop switching, reducing the noise floor below the dynamic range.

What is the function of the DCTRL pins?

The DCTRL2, DCTRL1, and DCTRL0 pins allow the user to select one of eight different nonoverlap times. This setting prevents shoot-through current in the H-bridge by ensuring high-side and low-side devices do not conduct simultaneously.