Cirrus Logic CS35L00 - Manual

Copyright
 Cirrus Logic, Inc. 2011
(All Rights Reserved)
http://www.cirrus.com
Preliminary Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
Gate Drivers
Class-H
Controller
Advanced ΔΣ
Modulator
Gate Drivers
Internal
Oscillator
Gain
Gain
Audio In +
Audio In -
Shutdown
Speaker Out +
Speaker Out -
GND
VBATT
2.5V - 5V
LDO Filter
Short Circuit/Thermal
Protection
MODE
Low Drop-Out
Voltage Regulator
Gain Select
2.8 W Mono Class-D Audio Amplifier with Low Idle Current
CS35L00 Features
 Hybrid Class-D Architecture
– <1 mA Quiescent Current
– 1 x 2.8 W into 4
Ω (10% THD+N)
– 1 x 2.3 W into 4 Ω (1% THD+N)
– 1 x 1.7 W into 8 Ω (10% THD+N)
– 1 x 1.4 W into 8 Ω (1% THD+N)
 Advanced ΔΣ Closed-loop Modulation
– 98 dB Signal-to-Noise Ratio (A-Weighted)
– 0.02% THD+N @ 1 W (SD & HD Mode)
 Integrated Protection and Automatic Recovery
for Output Short-circuit and Thermal Overload
 Thermally Enhanced 10-pin DFN Package with
Pin-selectable Gain of +6 dB or +12 dB
 Pop and Click Suppression
Common Applications
 Laptops
 Netbooks
 Portable Navigation Devices
 Active Speakers
 Portable Gaming
General Description
The CS35L00 is a 2.8 W high efficiency Hybrid Class-D
audio amplifier with low idle current consumption and a
selectable gain.
The CS35L00 features an advanced closed-loop archi-
tecture to provide 0.02% THD+N at 1 W and -88 dB
PSRR at 217 Hz.
A flexible Hybrid Class-D output stage offers four
modes of operation: Standard Class-D (SD) mode of-
fers full audio bandwidth and high audio performance;
Hybrid Class-D (HD) mode offers a substantial reduc-
tion in idle power consumption with an integrated Class-
H controller; Reduced Frequency Class-D (FSD) mode
reduces the output switching frequency, producing low-
er electromagnetic interference (EMI); and Reduced
Frequency Hybrid Class-D (FHD) mode produces both
the lower idle power consumption of HD mode and the
reduced EMI benefits of FSD mode.
Requiring minimal external components and PCB
space, the CS35L00 is available in a 3.0 mm x 3.0 mm,
10-pin DFN package in Commercial grade (-10°C to
+70°C). Please see
“Ordering Information” on page 33
for package options and gain configurations.
CS35L00
FEB '11
DS906PP1