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Gate Drivers

Class-H

Controller

Advanced ΔΣ

Modulator

Gate Drivers

Internal

Oscillator

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

3.0 W Mono Class-D Audio Amplifier with Low Idle Current

CS35L01 and CS35L03 Features

 Filterless Hybrid Class-D Architecture

– <1 mA Quiescent Current

– 1 x 3.0 W into 4  (10% THD+N)

– 1 x 2.4 W into 4  (1% THD+N)

– 1 x 1.7 W into 8  (10% THD+N)

– 1 x 1.4 W into 8  (1% THD+N)

 Advanced  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

 Pin-compatible 9-ball WLCSP family for easy

upgrade path

– CS35L01: +6 dB default Gain

– CS35L03: +12 dB default Gain

 Pop and Click Suppression

Common Applications

 Mobile Phones

 Laptops/Netbooks/Tablets

 Portable Navigation Devices

 Active Speakers

 Portable Gaming

General Description

The CS35L01 and the CS35L03 are 3.0W high efficien-

cy Hybrid Class-D audio amplifiers with low idle current

consumption.

The CS35L01/03 features an advanced closed-loop ar-

chitecture to provide 0.02% THD+N at 1 W and -87 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 CS35L01 and CS35L03 are available in a

1.2 mm x 1.2 mm, 9-ball WLCSP package in Commer-

cial grade (-10°C to +70°C). Please see “Ordering

Information” on page 33 for package options and gain

configurations.

CS35L01/03

JULY '11

DS909F1

1 2 3 4 5 6 ... 32 33

Sommario

Pagina 1 - CS35L01/03

Pagina 2

CS35L01/0310 DS909F1ELECTRICAL CHARACTERISTICS - SD MODEParameters Symbol Test Conditions Min Typ Max UnitsOutput Power(Continuous Average)POTHD+N = 1

Pagina 3

CS35L01/03DS909F1 11ELECTRICAL CHARACTERISTICS - FSD MODENote:12. Idle Current Draw (IIDLE) is specified without any output filtering. Refer to Sectio

Pagina 4

CS35L01/0312 DS909F1ELECTRICAL CHARACTERISTICS - HD MODEParameters Symbol Test Conditions Min Typ Max UnitsOutput Power(Continuous Average)POTHD+N = 1

Pagina 5

CS35L01/03DS909F1 13ELECTRICAL CHARACTERISTICS - FHD MODENote:13. SNRA dB is referenced to the output signal amplitude resulting in the specified outp

Pagina 6

CS35L01/0314 DS909F1DIGITAL INTERFACE SPECIFICATIONS AND CHARACTERISTICSPOWER-UP & POWER-DOWN CHARACTERISTICSNote:15. Start-Up Time (tstart) refer

Pagina 7

CS35L01/03DS909F1 155. APPLICATIONS5.1 MODE DescriptionsThe CS35L01/03 devices can be operated in one of four operating modes, determined by the MODE

Pagina 8 - ABSOLUTE MAXIMUM RATINGS

CS35L01/0316 DS909F1In both HD and FHD mode, the value of the capacitance connected to the LFILT+ pin must not exceed4.7 F. If this value is greater

Pagina 9

CS35L01/03DS909F1 17AV = Original gain of the device being used (See “Electrical Characteristics - All Operational Modes” onpage 9 for this value.)5.3

Pagina 10

CS35L01/0318 DS909F15.3.3 Output Filter Power Dissipation ConsiderationsIn systems without inductive series elements like inductors or ferrite beads,

Pagina 11

CS35L01/03DS909F1 19It is important to note that the HD and FHD modes offer significant improvement over traditional Class-Din idle power dissipation

Pagina 12

CS35L01/032 DS909F1TABLE OF CONTENTS1. BALL DESCRIPTIONS FOR CS35L01 & CS35L03 ...

Pagina 13

CS35L01/0320 DS909F15.5 Over Temperature ProtectionThe CS35L01/03 is internally protected against thermal overload. Built in die temperature sensing c

Pagina 14

CS35L01/03DS909F1 216. TYPICAL PERFORMANCE PLOTSTest Conditions (unless otherwise specified): GND = 0 V; All voltages with respect to ground; AV= 6 dB

Pagina 15 - 5. APPLICATIONS

CS35L01/0322 DS909F1Note:16. “Idle Current Draw vs. VBATT - SD Mode” capacitor values refer to CFILT when configured as the “CS35L01/03’s Minimized Op

Pagina 16

CS35L01/03DS909F1 236.2 FSD Mode Typical Performance Plots0.01100.020.050.10.20.5125%1m 22m 5m 10m 20m 50m 100m 200m 500m 1W0.01100.020.050.10.20.5125

Pagina 17

CS35L01/0324 DS909F1Note:17. “Idle Current Draw vs. VBATT - FSD Mode” capacitor values refer to CFILT when configured as the “CS35L01/03’s Minimized O

Pagina 18

CS35L01/03DS909F1 256.3 HD Mode Typical Performance Plots0.01100.020.050.10.20.5125%1m 22m 5m 10m 20m 50m 100m 200m 500m 1W0.01100.020.050.10.20.5125%

Pagina 19

CS35L01/0326 DS909F1Note:18. “Idle Current Draw vs. VBATT - HD Mode” capacitor values refer to CFILT when configured as the “CS35L01/03’s Minimized Op

Pagina 20

CS35L01/03DS909F1 276.4 FHD Mode Typical Performance Plots0.01100.020.050.10.20.5125%1m 22m 5m 10m 20m 50m 100m 200m 500m 1W0.01100.020.050.10.20.5125

Pagina 21 - 6. TYPICAL PERFORMANCE PLOTS

CS35L01/0328 DS909F1Note:19. “Idle Current Draw vs. VBATT - FHD Mode” capacitor values refer to CFILT when configured as the “CS35L01/03’s Minimized O

Pagina 22

CS35L01/03DS909F1 297. PARAMETER DEFINITIONSSignal to Noise Ratio (SNR)The ratio of the RMS value of the output signal, where Pout is equivalent to th

Pagina 23

CS35L01/03DS909F1 3LIST OF FIGURESFigure 1. Top View of WLCSP Pinout (Looking down through die) . . . . . . . . . . . . . . . . . . . . . . . . . .

Pagina 24

CS35L01/0330 DS909F18. PACKAGING AND THERMAL INFORMATION8.1 Package Drawings and Dimensions (Note 20)Note:20. Dimensioning and tolerance per ASME Y 14

Pagina 25

CS35L01/03DS909F1 318.2 Recommend PCB Footprint and Routing ConfigurationTo ensure high-yield manufacturability, the PCB footprint for the CS35L01/03

Pagina 26

CS35L01/0332 DS909F18.3.1 Determining Maximum Ambient TemperatureTo determine (to a first order approximation) the maximum ambient temperature in whic

Pagina 27

CS35L01/03DS909F1 339. ORDERING INFORMATION10.REVISION HISTORYProduct Description Package Pb-Free Grade Temp Range Container Order#CS35L01 3.0 W Mono

Pagina 28

CS35L01/034 DS909F1Figure 53. Efficiency vs. Output Power - FHD Mode RL= 4 W + 33 mH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pagina 29 - 7. PARAMETER DEFINITIONS

CS35L01/03DS909F1 51. BALL DESCRIPTIONS FOR CS35L01 & CS35L03Ball Name#DescriptionIN+ A1 Positive Analog Input (Input) - Differential positive aud

Pagina 30 - 9 BALL WLCSP

CS35L01/036 DS909F12. DIGITAL BALL CONFIGURATIONSSee (Note 1) and (Note 2) below the table.Note:1. Refer to specification table “Digital Interface Spe

Pagina 31

CS35L01/03DS909F1 73. TYPICAL CONNECTION DIAGRAMSFigure 2. Typical Connection Diagram for SD & FSD ModeFigure 3. Typical Connection Diagram for

Pagina 32

CS35L01/038 DS909F14. CHARACTERISTICS & SPECIFICATIONSTest Conditions (unless otherwise specified): GND = 0 V; All voltages with respect to ground

Pagina 33 - 10.REVISION HISTORY

CS35L01/03DS909F1 9ELECTRICAL CHARACTERISTICS - ALL OPERATIONAL MODESNote:6. No external loads should be connected to the LFILT+ net. Any connection o

Modelli collegati CS35L02 | CS35L01 |

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