2

CS42L73

Stereo Analog to Digital Features



91 dB Dynamic Range (A-wtd)



-85 dB THD+N



Independent ADC Channel Control



2:1 Stereo Analog Input MUX



Stereo Line Input

–

Shared Pseudo-differential Reference Input



Dual Analog MIC Inputs

–

Pseudo-diff. or Single-ended

–

Two, Independent, Programmable, Low-

noise, MIC Bias Outputs

–

MIC Short Detect to Support Headset Button



Analog Programmable Gain Amplifier (PGA)

(+12 to -6 dB in 0.5 dB steps)



+10 dB or +20 dB Analog MIC Boost in Addition

to PGA Gain Settings



Programmable Automatic Level Control (ALC)

–

Noise Gate for Noise Suppression

–

Progr. Threshold & Attack/Release Rates

Dual Digital Microphone Interface



Programable Clock Rate

– Integer Divide by 2 or 4 of Internal MCLK

Stereo DAC to Headphone Amplifier



94 dB Dynamic Range (A-wtd)



-81 dB THD+N into 32





Integrated Step-down/Inverting Charge Pump



Class H Amplifier - Automatic Supply Adj.

–

High Efficiency

–Low EMI



Pseudo-differential Ground-centered Outputs



High HP Power Output at -70/-81 dB THD+N

–

2 x 17/8.5 mW into 16/32

@ 1.8 V



Pop and Click Suppression



Analog Vol. Ctl. (+12 to -50 dB in 1 dB steps; to

-76 dB in 2 dB steps) with Zero-cross Trans.



Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)

with Soft-ramp Transitions



Programmable Peak-detect and Limiter

Stereo DAC to Line Outputs



97 dB Dynamic Range (A-wtd)



-86 dB THD+N



Class-H Amplifier



Pseudo-differential Ground-centered Outputs





Pop and Click Suppression



Analog Vol. Ctl. (+12 to -50 dB in 1 dB steps; to

-76 dB in 2 dB steps) with Zero-cross Trans.



Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)

with Soft-ramp Transitions



Programmable Peak-detect and Limiter

Mono DAC to Ear Speaker Amplifier



High Power Output at -70 dB (0.032%) THD+N

–

45 mW into 16

 @ 1.8 V



Pop and Click Suppression



Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)

with Soft-ramp Transitions



Programmable Peak-detect and Limiter

Mono DAC to Speakerphone Amplifier



High Output Power at

–

1.18/0.84/0.66 W into 8

 @ 5.0/4.2/3.7 V



Direct Battery-powered Operation



Pop and Click Suppression



Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)

with Soft-ramp Transitions



Programmable Peak-detect and Limiter

Mono DAC to Speakerph. Line Output



84 dB Dynamic Range (A-wtd)



-75 dB THD+N



3.7 V) Line Output to Ensure Maximum Output

from a Wide Variety of External Amplifiers



Pop and Click Suppression



Digital Vol. Ctl. (+12 to -102 dB in 0.5 dB steps)

with Soft-ramp Transitions



Programmable Peak-detect and Limiter

Serial Ports



Three Independent Serial Ports: Auxiliary,

Audio, and Voice



8.00, 11.025, 12.00, 16.00, 22.05, 24.00,

32.00, 44.10, and 48.00 kHz Sample Rates



All Ports Support Master or Slave Operation

with I²S Interface



Auxiliary and Voice Ports Support Slave

Operation with PCM Interface



Auxiliary and Audio Ports are Stereo-

Input/Stereo-Output to/from Digital Mixer



Voice Port is Mono-Input/Stereo-Output to/from

Digital Mixer



Integrated Asynch. Sample Rate Converters