Ultra Low Power, 4-Channel Microphone A/D Converter With TDM Interface

The CS53L30 is an ultra low power, high performance, quad-channel A/D converter designed to enhanced voice processing features such as noise suppression, acoustic echo cancellation and multi-channel beamforming and offer improved performance in voice capture processing such as voice control and recognition. A flexible input front end supports up to four line/analog mic or four digital mic (DMIC) channels with two digital mic serial clock outputs. Up to four CS53L30 ICs can be configured to output up to 16 channels of data over a single TDM line for seamless system integration. With less than 2.5 mW of power consumption per channel, the CS53L30 is a targeted fit for smartphones, tablets and other consumer electronics applications.


Product Category

Mobile Audio Devices


  • Low power consumption
  • < 4.5 mW stereo (16 kHz) analog mic record
  • < 2.5 mW mono (8 kHz) analog mic record
  • 8 kHz to 48 kHz sample rate support main or secondary mode
  • Native (no PLL required) support for 6/12 MHz, 6.144/12.288 MHz, 5.6448/11.2896 MHz, or 19.2 MHz main clock rates and typical audio sample rates
  • Selectable mic bias, digital interface logic voltages
  • High speed I²C™ control port (400 kHz)

Parametric Specifications

Channels (Inputs) 4
Resolution (bits) 24
Dynamic Range (dB) 91
THD+N (dB) -84
Sample Rate (kHz) 8-48
Analog Inputs/Outputs Single-ended;
Analog Power Supply (V) 1.8
Digital Power Supply (V) 1.8
Logic Power Supply (V) 3.3-5
Operational Power Consumption (mW) 3.8-9.1
Package 30 WLCSP;
32 QFN

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