ES8388

Audio Codec Module

The ES8388 is a audio codec module from PCB Artists. View the full ES8388 datasheet below including key specifications, pinout, electrical characteristics.

Manufacturer

PCB Artists

Key Specifications

Parameter	Value
Analog Supply Voltage (AVDD)	1.7V to 3.6V

Overview

Part: ES8388 Module — PCB Artists

Type: Audio Codec Module

Description: Module designed to add smartphone-like audio recording and playback capability to embedded designs, featuring I2S audio and I2C control interfaces, stereo microphone/line inputs, and stereo line outputs.

Operating Conditions:

Supply voltage: 1.5–3.6 V (digital), 1.7–3.6 V (analog)
Operating temperature: -40 to +85 °C
Max MCLK frequency: 51.2 MHz
Max I2C bus frequency: 400 kHz

Key Specs:

Analog supply voltage (AVDD): 1.7 V (min), 3.3 V (typ), 3.6 V (max)
Digital supply voltage (DVDD): 1.5 V (min), 3.3 V (typ), 3.6 V (max)
Line input impedance: 20 kOhm (typ)
MCLK Frequency: 51.2 MHz (max)
LRCLK Frequency (Fs): 200 kHz (max)
SCLK Frequency: 26 MHz (max)
I2C Bus frequency: 400 kHz (max)
Operating current (recording + playback): 18 mA @ 3.3V

Features:

Compatible with 1.8V and 3.3V MCUs
Analog section can be powered directly by a Li-Po cell
3.5mm stereo headphone jack for audio playback
Stereo microphone inputs, line inputs, and line outputs
Standard I2S audio and I2C control interface
Minimal audio noise ensured by design
All analog inputs and outputs available for use

Applications:

Embedded audio recording and playback

Package:

Module (20-pin)

Features

Compatible with 1.8V and 3.3V MCUs
Analog section can be powered directly by a Li-Po cell
3.5mm stereo headphone jack for audio playback
Stereo microphone inputs, line inputs, and line outputs
Standard I2S audio and I2C control interface
Minimal audio noise ensured by design
All analog inputs and outputs available for use
High quality audio playback:

10mA @ 3.3V

High quality audio recording + playback: 18mA @ 3.3V

Pin Configuration

ES8388 Pinout

Package: QFN-24 (4mm × 4mm)

Pin Number	Pin Name	Type	Description
1	LOUT	O	Left Channel Audio Output
2	GND	P	Ground
3	ROUT	O	Right Channel Audio Output
4	GND	P	Ground
5	AVDD	P	Analog Power Supply
6	GND	P	Ground
7	RIN2	I	Right Channel Input 2
8	LIN2	I	Left Channel Input 2
9	RIN1	I	Right Channel Input 1
10	MIC	I	Microphone Input
11	GND	P	Ground
12	SCL	I/O	I²C Clock Line
13	SDA	I/O	I²C Data Line
14	GND	P	Ground
15	MCLK	I	Master Clock Input
16	DVDD	P	Digital Power Supply
17	SCLK	I	Serial Clock Input
18	DIN	I	Digital Audio Data Input
19	LRCLK	I	Left/Right Clock (Frame Clock)
20	DOUT	O	Digital Audio Data Output
21	GND	P	Ground
22	GND	P	Ground
23	GND	P	Ground
24	GND	P	Ground

Notes

Power pins: AVDD (analog), DVDD (digital), and multiple GND connections for proper power distribution and noise isolation.
Audio I/O: Analog inputs (RIN1, RIN2, LIN2, MIC) and outputs (ROUT, LOUT); digital I/O (DIN, DOUT, SCLK, LRCLK, MCLK).
Control interface: I²C (SCL, SDA) for register configuration.
Multiple GND pins: Pins 2, 4, 6, 11, 21, 22, 23, 24 are all ground connections for low-impedance return paths.

Electrical Characteristics

Note: Some of the important specifications are listed below.

Please refer to ES8388 codec datasheet for a complete set of electrical specifications.

Recommended Operating Conditions

(-40 O C < TA < +85 O C)

Parameter	Min	Typ	Max	Unit
Analog supply voltage, AVDD	1.7	3.3	3.6	V
Digital supply voltage, DVDD	1.5	3.3	3.6	V

Ordering Information

MPN	Package	Temperature Range	Packing

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