Cirrus-logic CS42L73 User Manual download pdf (Page 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 Ω

 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 Ω @ 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

 1 V

RMS

Line Output @ 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

Mono DAC to Ear Speaker Amplifier

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

– 45 mW into 16 Ω @ 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% THD+N

– 1.18/0.84/0.66 W into 8 Ω @ 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

 High Voltage (1.53 V

RMS

@ VA = 1.8 V, VP =

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

1 2 3 4 5 6 7

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Cirrus-logic CS42L73 User Manual Page 2

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