Cirrus Logic CS43L22 - Manual

Copyright
 Cirrus Logic, Inc. 2010
(All Rights Reserved) http://www.cirrus.com
MARCH '10
DS792F2
Low Power, Stereo DAC w/Headphone & Speaker Amps
FEATURES
 98 dB Dynamic Range (A-wtd)
 88 dB THD+N
 Headphone Amplifier - GND Centered
– No DC-Blocking Capacitors Required
– Integrated Negative Voltage Regulator
– 2 x 23 mW into Stereo 16
Ω @ 1.8 V
– 2 x 44 mW into Stereo 16
Ω @ 2.5V
 Stereo Analog Input Passthrough Architecture
– Analog Input Mixing
– Analog Passthrough with Volume Control
 Digital Signal Processing Engine
– Bass & Treble Tone Control, De-Emphasis
– PCM Input w/Independent Vol Control
– Master Digital Volume Control and Limiter
– Soft-Ramp & Zero-Cross Transitions
 Programmable Peak-Detect and Limiter
 Beep Generator w/Full Tone Control
– Tone Selections Across Two Octaves
– Separate Volume Control
– Programmable On and Off Time Intervals
– Continuous, Periodic, One-Shot Beep
Selections
Class D Stereo/Mono Speaker Amplifier
 No External Filter Required
 High Stereo Output Power at 10% THD+N
– 2 x 1.00 W into 8 Ω @ 5.0 V
– 2 x 550 mW into 8 Ω @ 3.7 V
– 2 x 230 mW into 8 Ω @ 2.5 V
 High Mono Output Power at 10% THD+N
– 1 x 1.90 W into 4 Ω @ 5.0 V
– 1 x 1.00 W into 4 Ω @ 3.7 V
– 1 x 350 mW into 4
Ω @ 2.5 V
 Direct Battery Powered Operation
– Battery Level Monitoring & Compensation
 81% Efficiency at 800 mW
 Phase-Aligned PWM Output Reduces Idle
Channel Current
 Spread Spectrum Modulation
 Low Quiescent Current
+1.60 V to +5.25 V
Battery
+1.65 V to +2.63 V
Digital Supply
Pulse-Width
Modulator
Battery Level Monitoring & Compensation
Multi-bit
ΔΣ DAC
Le
ve
l S
h
if
te
r
+1.65 V to +3.47 V
Interface Supply
Control Po
rt
S
e
ri
al A
u
d
io
Port
Beep
Generator
Digital Volume,
Mono Mix,
Limiter, Bass,
Treble Adjust
Left
Inputs
Σ
4 3 2 1
Summing
Amplifiers
Left HP/Line
Output
Ground-Centered
Amps
Right HP/Line
Output
+1.65 V to +2.63 V
Headphone Supply
Speaker/HP
Switch
Charge Pump
+VHP -VHP
+1.65 V to +2.63 V
Analog Supply
Stereo/Mono
Full-Bridge
Speaker
Outputs
Class D Amps
+
-
+
-
I²C
Control
Reset
Serial
Audio
Input
Right
Inputs
Σ
4 3 2 1
CS43L22
Confidential Draft
3/4/10