WM8978CGEFL/RV footprint, schematic symbol and 3D model by Cirrus Logic

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Part Number WM8978CGEFL/RV
Manufacturer Cirrus Logic
Pin Count 33
Part Category Integrated Circuit
Package Category Quad Flat No-Lead
Footprint Name Quad Flat No-Lead - 32 PIN QFN PLASTIC PACKAGE 5 X 5 X 0.9 mm BODY, 0.50 mm LEAD PITCH
Released Date Feb 26, 2021
Last Modified Date Mar 7, 2023 4:10 PM UTC
Pinout / Pin List Click Here (Member Only)

WM8978CGEFL/RV Details

Manufacturer Part Number:
WM8978CGEFL/RV
Rohs Code:
Yes
Part Life Cycle Code:
Obsolete
Package Description:
5 X 5 MM, 0.90 MM HEIGHT, 0.50 MM PITCH, LEAD FREE, PLASTIC, MO-220VHHD-5, QFN-32
HTS Code:
8542.39.00.01
Manufacturer:
Cirrus Logic
YTEOL:
0
Companding Law:
A/MU-LAW
Filter:
YES
JESD-30 Code:
S-PQCC-N32
Length:
5 mm
Moisture Sensitivity Level:
3
Number of Functions:
1
Number of Terminals:
32
Operating Mode:
SYNCHRONOUS
Operating Temperature-Max:
100 °C
Operating Temperature-Min:
-40 °C
Package Body Material:
PLASTIC/EPOXY
Package Code:
HVQCCN
Package Shape:
SQUARE
Package Style:
CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
Seated Height-Max:
1 mm
Supply Voltage-Nom:
1.8 V
Surface Mount:
YES
Technology:
CMOS
Telecom IC Type:
PCM CODEC
Temperature Grade:
INDUSTRIAL
Terminal Form:
NO LEAD
Terminal Pitch:
0.5 mm
Terminal Position:
QUAD
Width:
5 mm

The recommended power-up sequence is to apply VDD first, followed by VDDIO, and then the clock signal. This ensures that the internal voltage regulators are powered up correctly.
The WM8978 can be configured using the I2C interface. The device has several registers that control the audio settings, such as gain, mute, and routing. Refer to the datasheet for the register map and configuration details.
The maximum input signal level that the WM8978 can handle is 2.2Vrms. Exceeding this level may result in distortion or damage to the device.
To optimize the WM8978 for low power consumption, use the power-down modes, disable unused blocks, and adjust the clock frequency to the minimum required for the application. Additionally, use the dynamic voltage scaling feature to reduce power consumption.
The recommended layout and routing for the WM8978 involves keeping the analog and digital signals separate, using a solid ground plane, and minimizing the length of the clock signal traces. Refer to the datasheet for more detailed layout and routing guidelines.

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