CS42406

Features:

D/A Features
`24-Bit Conversion
`102 dB Dynamic Range at 5 V
`-91 dB THD+N
`Digital Volume Control with Soft Ramp
119 dB Attenuation
1 dB Step Size
Zero Crossing Click-Free Transitions
`I²C & SPI™ Host Control Port
`ATAPI Mixing
`Low Clock Jitter Sensitivity
`Popguard Technology® for Control of Clicks and Pops

A/D Features
`24-Bit Conversion
`105 dB Dynamic Range at 5 V
`-98 dB THD+N
`Advanced Multi-Bit Delta-Sigma Architecture
`High Pass Filter to Remove DC Offsets
`Auto-Mode Selection

System Features
`Direct interface with 5 V to 1.8 V logic levels
`Supports Independent, Synchronous ADC/DAC Sample Rates
`Operation as Clock Master or Slave
`Supports all Audio Sample Rates Including 192 kHz
`Single-Ended Inputs/Outputs
`Analog/Digital Core Supplies From 3.3 V to 5 V

Application

The ADC's internal to the CS42406 can support output sample rates from 2 kHz to 200 kHz, and a base MCLK/ADC_LRCK ratio of either 256x or 384x. The proper speed mode can be determined by the desired output sample rate and the external MCLK/ADC_LRCK ratio, as shown in Table 1 and Table 2. Please see section 4.2 for a discussion on how to select the desired speed mode.


Pinout




Specifications

Parameters		Symbol	Min	Max	Units
DC Power Supply	Analog Digital Serial Audio Interface(SAI) Control Port Interface	VA VD VLS VLC	-0.3 -0.3 -0.3 -0.3	6.0 6.0 6.0 6.0	V V V V
Input Current	(Note 5)	Iin	-	±10	mA
Analog Input Voltage	(Note 6)	VIN	GND-0.7	VA+0.7	V
Digital Input Voltage (Note 6)	Serial Audio Data Interface Control Port Interface	VIND-S VIND-C	-0.3 -0.3	VLS+ 0.4 VLC+ 0.4	V V V
Ambient Operating Temperature(power applied)		TA	-50	+95	°C °C
Storage Temperature		Tstg	-65	+150	°C

Description

The CS42406 is a low cost, integrated audio CODEC. The CS42406 performs stereo analog-todigital (A/D) conversion and six channels of digitalto- analog (D/A) conversion of up to 24-bit serial values at sample rates up to 200 kHz. The D/A offers a volume control that operates with a 1 dB step size. It incorporates selectable soft ramp and zero crossing transition functions to eliminate clicks and pops.

The D/A's integrated digital mixing functions allow a variety of output configurations ranging from a channel swap to a stereo-to-mono down-mix. Standard 50/15 s de-emphasis is available for sampling rates of 32, 44.1, and 48 kHz for compatibility with digital audio programs mastered using the 50/15 s pre-emphasis technique. Integrated level translators allow easy interfacing between the CS42406 and other devices operating over a wide range of logic levels.

High-pass filters CS42406 are available for the right and left channel of the A/D. This allows the A/D to remove unwanted DC offsets.

The CS42406's wide dynamic range, negligible distortion, and low noise make it ideal for applications such as A/V receivers, DVD receivers, and set-top box systems.