CS42L73 Cirrus Logic, CS42L73 Datasheet - Page 2

• Manufacturer Part Number: CS42L73
• Description: Ultra Low Power Mobile Audio and Telephony CODEC
• Manufacturer: Cirrus Logic

2
Stereo Analog to Digital Features
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Dual Digital Microphone Interface
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Stereo DAC to Headphone Amplifier
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Stereo DAC to Line Outputs
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91 dB Dynamic Range (A-wtd)
-85 dB THD+N
Independent ADC Channel Control
2:1 Stereo Analog Input MUX
Stereo Line Input
Dual Analog MIC Inputs
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)
Programable Clock Rate
94 dB Dynamic Range (A-wtd)
-81 dB THD+N into 32 
Integrated Step-down/Inverting Charge Pump
Class H Amplifier - Automatic Supply Adj.
Pseudo-differential Ground-centered Outputs
High HP Power Output at -70/-81 dB THD+N
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
97 dB Dynamic Range (A-wtd)
-86 dB THD+N
Class-H Amplifier
Pseudo-differential Ground-centered Outputs
1 V
Pop and Click Suppression
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RMS
Shared Pseudo-differential Reference Input
Pseudo-diff. or Single-ended
Two, Independent, Programmable, Low-
noise, MIC Bias Outputs
MIC Short Detect to Support Headset Button
Noise Gate for Noise Suppression
Progr. Threshold & Attack/Release Rates
Integer Divide by 2 or 4 of Internal MCLK
High Efficiency
Low EMI
2 x 17/8.5 mW into 16/32 @ 1.8 V
Line Output @ 1.8 V
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Mono DAC to Ear Speaker Amplifier
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Mono DAC to Speakerphone Amplifier
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Mono DAC to Speakerph. Line Output
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Serial Ports
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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
High Power Output at -70 dB (0.032%) THD+N
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
High Output Power at 
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
84 dB Dynamic Range (A-wtd)
-75 dB THD+N
High Voltage (1.53 V
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
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
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45 mW into 16  @ 1.8 V
1.18/0.84/0.66 W into 8  @ 5.0/4.2/3.7 V
RMS
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1% THD+N
@ VA = 1.8 V, VP =
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CS42L73