CS3511 High Performance Stereo 10W Integrated Class-D Amplifier
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| cs3511 1 Stereo 10 W High-efficiency Class-D Audio Power Amplifier Features ♦ Closed-loop Advanced AZ Architecture ♦ True Spread Spectrum Modulation ♦ Premium Quality Audio Amplification - 99 dB Dynamic Range - System Level - 0.025% THD+N @ 5 W - System Level - -104 dB Channel Separation ♦ Four Selectable Amplifier Gain Settings ♦ Integrated Protection and Automatic Recovery for Over-current, Under-voltage, and Thermal Overload ♦ Single-supply Operation (Typ. = 9-12 V) ♦ No Bootstrap Capacitors Required ♦ Low-power Standby Mode ♦ Supports Differential or Single-ended Inputs ♦ Thermally Enhanced 32-pin, 6x6 mm QFN Package Requires No External Heat Sink Common Applications ♦ Active Speakers ♦ Portable Media Player Docking Stations ♦ Mini/Micro Shelf Systems ♦ Digital Televisions General Description The CS3511 is a high-efficiency class-D PWM amplifier that integrates on-chip over-current, under-voltage, over-temperature protection, and error reporting. An on-board regulator generates a 5 VDC supply used to power the internal low-voltage analog and digital cir-cuitry. The low RDS(ON) outputs can source peak cur-rents up to 2.7 A, deliver high efficiency, allow a small device package, and lower power supply voltage levels. The CS3511 is available in a 32-pin QFN package in Commercial grade (-10°C to +70°C). The CRD3511 customer reference design is also available. Please re-fer to "Ordering Information" on page 25 for complete ordering information. Positive Input Channel 1 Negative Input MUTE SLEEP STATUS GAIN0 GAIN1 Digital Power 5 V Regulator 12 V 0 VP Processing and Modulation Gate Drive Channel 1 Positive Output Negative Output Processing and Modulation Charge Pump Positive Input Channel 2 Negative Input Gate Drive Channel 2 Positive Output Negative Output PGND 1_F fCIRRUS LOG/C" Copyright © Cirrus Logic, Inc. 2009 dec '09 http://www.cirrus.com (Al1 Rights Reserved) ds845f1

cs3511 1. pin descriptions i IN1 o P A Q o Q NSAN G IA 5A G <CO>< 32 31 30 29 28 27 26 25 ^ IN1 + V5D GAIN0 DGND REF SLEEP MUTE STATUS o / / / Thermal Pad IN2+ AGND GAIN1 5VGEN VP DCAP CPUMP PGND Top-Down (Through Package) View 32-Pin QFN Package <~\ /~\ /~\ f~\ S~\ S~S f^S /~\ 9 10 11 12 13 14 15 16 + cl o ' o cl + T1 VP ND T1 T2 ND VP UT G U U G ^ cl q o cl ^ Pin Name # Pin Description IN1 + 1 IN1-IN2+ 32 24 Differential Analog Input (Input) - Differential Audio Signal Inputs for channel 1 and channel 2. IN2- 25 V5D 2 Digital Power (Input) - Supply for digital logic. Connect to 5VGEN....

CS3511 Parameters Symbol Test Conditions Min lyp Max Units General Spcifications Efflciency P0 = 2x9.4 W. Ru=8n 86 - % Gain Matching Between output channels 0.1 - % 3ower Supply Rejection Ratio PSRR 200 mv p-p ffom 20 HzSf 1kHz. inputsAC coupled to AGND 55 - dB IHF Intermodulation Distortion IHF-IMD 19 kHz. 20 kHz. 1:1 (IHF), P0=1 W 0.20 - % Input Imp飩dance (Note 9) Gainl = 0. GainO = 0 368 46.0 55.2 kii Galnl =0, GainO =1 184 23.0 27.6 kil Gainl = 1, GainO = 0 11.0 13.8 16.6 kii Gainl - 1, GainO = 1 7.3 9.2 11.1 kii Output Offset Voltage (Note 10) ^offset MUTE = low * 50 - mV PWM Output...

CS3511 DC ELECTRICAL CHARACTERISTCS Test Conditions (unless otherwise specified): AGND = DGND = PGND = 0 V; Ail voltages with respect to ground; TA = 25°C; VP = 12 V; RL = 8 il full-bridge; GAIN1 = 0, GAINO = 1 ; Stereo Full-Bridge measurements taken through the Full-Bridge Output Filter shown in Figure 4 on page 16. Parameters Symbol Test Conditions Min Typ Max Units Sleep Supply Currenl SLEEP = VIH - 5.2 - mA ϕcc<s*eep) SLEEP = V|H; no load. filter. or snubber ■ 5.2 mA Mute Supply Current MUTE = VIH 36 mA ccimuie) MUTE = V,H; no load, filter, or snubber ■ 38 mA Quiescent Currenl V|N = 0V;...

CS3511 DIGITAL I/O PIN CHARACTERISTICS The logic level for each input is set by its corresponding power supply and should not exceed the maximum ratings. Power Supply Pin Number Pin Name I/O Driver Receiver 3 GAIN0 Input - 5.0 V; Internal 50 kQ pull-down 22 GAIN1 Input - 5.0 V; Internal 50 kQ pull-down 5VD 7 MUTE Input - 5.0 V 6 SLEEP Input - 5.0 V 8 STATUS Output 5.0 V - 35 OUT1 + Output 8.5 V -13.2 V Power MOSFET - VP 32 OUT1- Output 8.5 V -13.2 V Power MOSFET - 29 OUT2+ Output 8.5 V -13.2 V Power MOSFET - 26 OUT2- Output 8.5 V -13.2 V Power MOSFET - Table 1. I/O Power Rails 10 DS845F1

CS3511 3. TYPICAL CONNECTION DIAGRAMS System Control Logic h w w h w \ m 3) GAIN0 GAIN1 MUTE SLEEP STATUS 27] AGND VP R1 1.0 pf Differential ^/\H IIN1 + CS3511 VP [10] 0.1 pf 220uF Analog Inputs Note(R1=R2) R2 1.0 pf M%ח1|->{32] IN1- R3 1.0 pf Differential ^ I^ IN2+ OUT1+ (9 OUT1- (12} Full-Bridge L_r Output Filter H Channel 1 Audio Output Analog Inputs Note(R3=R4) ( ^-AaV-^| Pf (25) IN2- (28) V5A (3^ C1 {2?) C2 (29\ BIASCAP (Note 1) Rl 6 Q to 8 Q PGND h1} 1 pf 10 pf +10 pf |+ 1 pf VP (Note 2) 0.1 pf {30J AGND (8 CPUMP @ DCAP {2^ VP J2?| 5VGEN VP 15 0.1 pf 220 uF 1.0 pf VP OUT2+ [16J OUT2-...

CS3511 3J GAIN0 22} GAIN1 MUTE SLEEP STATUS 27] AGND VP Single-Ended R1 1.0 M r R2 1.0 Hf CS3511 VP 10} + 1) IN1+ 0.1 Mf 220 uF Note(R1=R2) _L Important: See (Note 3) jAA/V11-H 3?) IN1-24} IN2+ OUT1+ [9 OUT1- (12\ Full-Bridge Output Filter Rl 6 Q to 8 Q Channel 1 Audio Output Single-Ended I Analog Input W R4 1.0 Mf r Note(R3=R4) I AAA-1 |->{25} IN2- (Note 1) 1 M | 10 M |+ 10 M |+ 1 M f (28) V5A (3} C1 @ C2 (S) BIASCAP PGND (jj) VP 1.0 nf VP 0.1 jif {30J AGND H») CPUMP @ DCAP @ VP (2^ 5VGEN VP [15\ + 220 uF 0.1 Mf OUT2+ [6 OUT2- (m Full-Bridge Output Filter Channel 2 Audio Output (Note 1) Rl...

CS3511 4. APPLICATIONS 4.1 CS3511 Input Stage The input stage of the CS3511 is configured as a differential receiver to maximize common-mode rejection in typical audio circuits. To maximize this benefit, the INx+ and INx- pins should be driven with differential signals from sources that have the same output impedance. Also, the signals should be routed parallel to one another from their source to the analog inputs of the CS3511. In some instances, there will be a necessity to drive the CS3511 with a single-ended input signal. In this case, the unused input should be AC coupled to ground...