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WM8994ECS/R

Name: WM8994ECS/R
Rating: 4.7 (12 reviews)

IC CODEC AUD HUB MULTI-CH 72WCSP

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規格

Part Status	Active
Type	Stereo Audio
Data Interface	I2S, PCM
Resolution (Bits)	24 b
Number of ADCs / DACs	2 / 4
Sigma Delta	Yes
S/N Ratio, ADCs / DACs (db) Typ	95 / 100
Voltage - Supply, Analog	1.71V ~ 2V
Voltage - Supply, Digital	1.62V ~ 3.6V
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Package / Case	72-UFBGA, WLCSP
Supplier Device Package	72-WCSP (4.52x4.03)
Base Product Number	WM8994

概述

Description

The WM8994ECS/R is Cirrus Logic Wolfson’s WM8994 stereo CODEC in a specific ECS/R package. It integrates two 24-bit ADCs and DACs, a built-in headphone amplifier, microphone bias, and line-in/line-out paths. It provides a flexible digital audio interface (I2S, left-justified, right-justified) and is controllable over I2C. It supports up to 192 kHz sample rates with programmable gain, mute/soft-mute, and digital volume control, making it suitable for portable/embedded audio devices. The ECS/R suffix denotes a package variant; refer to the datasheet for exact electrical specs, pinout, and operating conditions.

Features

Here are the core features of WM8994ECS/R (Wolfson):
- 24-bit stereo ADC and DAC
- Integrated headphone driver
- Analog inputs: microphone bias and line-in; outputs: line-out and headphone
- Flexible digital audio interface: supports I2S (and common PCM formats), left-justified/right-justified
- Digital processing features: programmable digital volume control, mute, and de-pop
- On-chip clocking: supports external master clock with PLL for clock generation
- Low-power operation with various power-down/standby modes
- Compact ECS/R packaging variant suitable for portable applications
Note: For exact electrical specs (voltage ranges, max clock speeds, SNR/DNR, noise performance, and timing), please consult the WM8994ECS/R datasheet.

Package

The WM8994ECS/R comes in a 28-pin QFN package (4×4 mm) with an exposed pad; “R” indicates reel (tape-and-reel) packaging.

Pinout

- Pin count: 28 pins
- Function: WM8994ECS/R is a stereo audio CODEC with integrated ADC/DAC and headphone driver, including mic/line inputs and line outputs, plus a digital audio interface (I2S/PCM) to connect to a host controller.

Manufacturer

Manufacturer: Wolfson Microelectronics.
What kind of company: A UK-based fabless semiconductor company that designs and licenses high‑performance analog/mixed‑signal ICs for audio (e.g., CODECs, DACs, ADCs). It is now part of Cirrus Logic.

Application

- Mobile/portable devices (smartphones, tablets, handheld audio players)
- Consumer multimedia gear (digital cameras, camcorders, portable speakers)
- Voice/communication equipment (VoIP phones, conference speakerphones, headsets)
- USB/Bluetooth audio interfaces and adapters
- Embedded audio in docking stations and other consumer electronics

Equivalent

Direct equivalents don’t exist; WM8994ECS/R is a Wolfson/Cirrus stereo codec. Closest alternatives:
- Wolfson/Cirrus: WM8960, WM8731
- TI: TLV320AIC3204, TLV320AIC3254, SGTL5000 (stereo DAC/ADC with headphone driver)
When selecting, compare 24-bit DAC/ADC specs, I2S interface, headphone amp, supply voltage, and package.