Quiescent Current Comparison
0nF 1nF 2nF
Output Shunt Capacitor Value
Quiescent Current (mA)*
12
10
8
6
4
2
0
Competitor Solutions
OVERVIEW
The CS35L00, L01 and L03 are a family of low-power
audio amplifiers with Cirrus Logic’s proprietary Hybrid
Class-D Architecture, designed specifically for today’s
mobile applications. Combining the benefits of both linear
and switching amplifier technologies, its Hybrid Class-D
architecture offers best-in-class idle power consumption
and low radiated emission while maintaining high output
power efficiency and superior audio quality.
The CS35L0X family has the industry’s lowest quiescent
current at less than 1mA. When used with no external
filter components, it is at least 40 percent lower than the
closest competitor in the market today. Furthermore, the
Hybrid Class-D Architecture allows designers to optimize
their system performance with external components if
needed, such as with an external shunt cap without
sacrificing significant power consumption when idle.
THIS FLEXIBLE HYBRID CLASS-D OUTPUT
STAGE OFFERS FOUR MODES OF OPERATION:
Standard Class-D (SD) mode offers full audio
bandwidth and high audio performance
Hybrid Class-D (HD) mode offers a substantial
reduction in idle power consumption with an integrated
Class-H controller
Reduced Frequency Class-D (FSD) mode reduces
the output switching frequency, producing lower
electromagnetic interference (EMI)
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 3 mm x 3 mm, 10-pin DFN
package and the CS35L01/03 are available in a 1.2 mm x
1.2 mm, 9-ball WLCSP package with Commercial
temperature grade (-10°C to +70°C).
For the full datasheet, visit www.cirrus.com/support.
CS35L00/01/03
3W MONO CLASS-D AUDIO AMPLIFIER WITH LOW IDLE CURRENT
LEARN MORE AT
www.cirrus.com
LOW POWER AUDIO AMPLIFIER
CS35L00 10-PIN DFN
(actual size: 3 mm x 3 mm)
CS35L01/03
CS35L01/03 9-BALL WLCSP
(actual size: 1.2 mm x 1.2 mm)
MARKET APPLICATIONS
Smartphones
UMPC/MID
Docking Stations
Active Speakers
Portable Gaming
CIRRUS LOGIC, INC.
2901 Via Fortuna
Austin, Texas 78746
United States
T +1-512-851-4000
Toll-Free +1-800-888-5016
SALES SUPPORT
North America +1 800-625-4084
Asia Pacific +852 2376-0801
Japan +81 (3) 5226-7757
Europe/UK +44 (90) 1628-891-300
Advanced ΔΣ
Modulator
with Dithered
Spectrum
Class-H
Controller
Low Drop-Out
Voltage Regulator
Short Circuit/
Thermal
Protection
Internal
Oscillator
Gate Drivers with
Edge Rate Control
Gate Drivers with
Edge Rate Control
Shutdown
Speaker Out +
Speaker Out –
GND
MODE LDO Filter VBATT
2.5 V - 5.5 V
Audio In +
Gain Select
Audio In – Gain
Gain
CS35L00
LOW POWER AUDIO AMPLIFIER | CS35L00/01/03
© 2010 Cirrus Logic, Inc. All rights reserved. Product information is subject to change without notice. Cirrus Logic, Cirrus and the Cirrus Logic logo design
are trademarks of Cirrus Logic, Inc. Other brand and product names may be trademarks or service marks of their respective owners. Product Bulletin 823111-0610-PB
DEMONSTRATION BOARD CDB35L00
PRODUCT SELECTOR
REFERENCE BOARD CRD35L01
Part
Power (W)
Dynamic
Range (dB)
THD+N %
PSRR (dB)
Channels
Power
Supply (V)
Gain
Comments
Package
CS35L00 3.0 98 0.02 -85 1 2.5 to 5.5 Selectable +6/+12 dB Hybrid Class-D architecture,
< 1mA quiescent current 10 DFN
CS35L01 3.0 98 0.02 -85 1 2.5 to 5.5 +6 dB Hybrid Class-D architecture,
< 1mA quiescent current 9 WLCSP
CS35L03 3.0 98 0.02 -85 1 2.5 to 5.5 +12 dB Hybrid Class-D architecture,
< 1mA quiescent current 9 WLCSP
CS35L00/01/03 FEATURES
HYBRID CLASS-D ARCHITECTURE
1 x 3.0 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)
ULTRA-LOW POWER CONSUMPTION
<1 mA Quiescent Current•
ADVANCED ∆∑ CLOSED-LOOP MODULATION
98 dB Signal-to-Noise Ratio (A-Weighted)•
0.02% THD+N @ 1 W (SD & HD Mode)•
-85 dB Power Supply Rejection Ratio @ 217Hz•
-70 dB Common Mode Rejection Ratio •
Integrated Protection and Automatic Recovery for •
Output Short-circuit and Thermal Overload
Pop and Click Suppression•
AVAILABLE IN LOW-PROFILE 10-PIN DFN OR 9-BALL WLCSP
CS35L00: +6 dB or +12 dB Selectable Gain•
CS35L01: +6 dB default Gain•
CS35L03: +12 dB default Gain•
(Chip shown at
actual size)
