CS4218

Features:

· Delta-Sigma A/D and D/A Converters using 64x Oversampling.
· Input Anti-Aliasing and Output Smoothing Filters.
· Programmable Input Gain (0 dB to 22.5 dB).
· Programmable Output Attenuation (0 dB to 46.5 dB).
· Sample frequencies from 4 kHz to 50 kHz.
· Low Distortion, THD < 0.02% for DAC. THD < 0.02% for ADC.
· Low Power Dissipation: 80 mA typical.
· Power-Down Mode : 1 mA typical.
· Pin Compatible with CS4216 when used in Serial Modes 3 and 4 (See Appendix A).
· I2S(TM) Compatible Serial Mode (SM5).
· Operates from 5V or 3.3V Digital Power Supply. Requires 5V Analog Power Supply.


Pinout




Specifications

Parameter	Symbol	Min	Typ	Max	Units
Power Supplies: Digital Power Supplies: Analog	VD VA	-0.3 -0.3	- -	6.0 6.0	V V
Input Current (Except Supply Pins)		-	-	±10.0	mA
Analog Input Voltage		-0.3	-	VA+0.3	V
Digital Input Voltage		-0.3	-	VD+0.3	V
Ambient Temperature (Power Applied)		-55	-	+125	°C
Storage Temperature		-65	-	+150	°C

Description

The CS4218 Stereo Audio Codec is a monolithic CMOS device for computer multimedia, automotive, and portable audio applications. It performs A/D and D/A conversion, filtering, and level setting, creating 4 audio inputs and 2 audio outputs for a digital computer system. The digital interfaces of left and right channels are multiplexed into a single serial data bus with word rates up to 50 kHz per channel.

ADCs and the DACs use delta-sigma modulation with 64X oversampling. The ADCs and DACs include digital decimation filters and output smoothing filters on-chip which eliminate the need for external anti-aliasing filters.

The CS4218 is pin and function compatible with the CS4216 when used in Serial modes 3 and 4. See the Appendix A at the end of this data sheet for details.

I²S is a trademark of Philips.