WM9081GICN/RV

Overview

The WM9081GICN/RV is a mono digital-to-analog converter (DAC) with an integrated Class AB/D speaker driver, dynamic range controller, and ReTune Mobile parametric equalizer. It operates on a 28-lead COL package (4x4x0.55mm). The device supports digital audio interfaces including I2S, DSP, Left Justified, and Right Justified formats with TDM support. Key electrical parameters include a 92dB SNR in Class D mode and 97dB SNR in Class AB mode. Supply voltages range from 1.71V to 3.6V for digital cores and buffers, 2.7V to 3.6V for analog supplies, and 2.7V to 5.5V for the speaker supply. It functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Integrated ReTune Mobile Parametric Equalizer with fully programmable coefficients for speaker optimization.
• Programmable Dynamic Range Controller to maximize loudness and protect against clipping and battery droop.
• Supports standard control interfaces: 2-wire, 3-wire, 4-wire, and hardware control modes.
• Low power Fractional-Lock Loop (FLL) supporting input frequencies from 32kHz to 27MHz.

Applications

• Portable navigation systems
• Mobile phones
• Flat panel TVs

Procurement Notes

Verify the ordering suffix 'RV' indicates tape and reel packaging with a reel quantity of 3500 units. Confirm Moisture Sensitivity Level (MSL) is 3, requiring storage limits of 168 hours at <30°C / 60% Relative Humidity if out of bag. Ensure peak soldering temperature does not exceed 260°C during assembly.

Selection Notes

Select this component when space-constrained portable designs require high-power output with low distortion. The digital input capability allows placing power drivers close to speakers, eliminating bulky Class D filters. Ensure the system supports the required sample rates from 8kHz to 96kHz and provides appropriate supply voltages for AVDD and SPKVDD.

Part Context

The WM9081GICN/RV belongs to the Cirrus Logic WM9081 series. The 'GICN' denotes the 28-lead COL package, while '/RV' specifies the tape and reel variant. This part is designed for mono applications where speaker enhancement and efficient power delivery are critical.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should verify pin compatibility and register map differences if considering alternative mono DACs with integrated amplifiers.

FAQ

What is the maximum peak speaker output power?

The WM9081 provides a maximum peak speaker output power of 2.6W in both Class D and Class AB modes.

How is the control interface configured?

The device supports four control interface addresses and can be controlled via standard 2-wire, 3-wire, or 4-wire serial interfaces, or by hardware control pins depending on the SWMODE setting.

What is the purpose of the Speaker Common Mode Boost?

The Speaker Common Mode Boost maximizes power output for a given ratio between the speaker supply (SPKVDD) and analog supply (AVDD).