EVALUATION KIT AVAILABLE Click here to ask about the production status of specific part numbers. MAX13330/MAX13331 Automotive DirectDrive Headphone Amplifiers with Output Protection and Diagnostics General Description Features The MAX13330/MAX13331 stereo headphone ampli- 4V to 5.5V Single-Supply Operation fiers are designed for automotive applications requiring 2MHz Charge Pump Prevents AM Radio Interference output short-circuit and ESD protection to battery/ground Ground-Referenced Outputs Eliminate Bulky DC- with diagnostics. These devices use Maxims unique Blocking Capacitors DirectDrive architecture to produce a ground-referenced Short-to-Ground and Battery (V up to +45V) BAT output from a single supply, eliminating the need for large Output Protection, Load Dump Protection DC-blocking capacitors, saving board space and com- Short-Circuit Diagnostic Output ponent height. The gain of the amplifier is set internally (-1.5V/V) on the MAX13330 or adjusted externally with Adjustable Gain (MAX13331) or Fixed -1.5V/V Gain resistors on the MAX13331. (MAX13330) 125mW per Channel into 32 at 0.01% THD+N The MAX13330/MAX13331 deliver 120mW per channel into a 16 load or 135mW into a 32 load and have a low Integrated Click-and-Pop Suppression 0.01% THD+N. Low output impedance and the efficient High PSRR Eliminates LDO integrated charge pump allows the device to drive loads No Degradation of Low-Frequency Response Due as low as 8, enabling the use of small loudspeakers. An to Output Capacitors 80dB at 217Hz PSRR allows these devices to operate 15kV Human Body Model ESD Protection for from noisy digital supplies without an additional linear reg- Output Pins ulator. These devices include 15kV Human Body Model ESD protection and short-circuit protection up to +45V at Ordering Information the headphone outputs. Comprehensive click-and-pop circuitry suppresses audible clicks and pops on startup TEMP PIN- PART GAIN and shutdown. A low-power shutdown mode reduces the RANGE PACKAGE supply current to 3A (typ). MAX13330GEE/V+T -1.5V/V -40C to +105C 16 QSOP The MAX13330/MAX13331 are specified from -40C to Externally +105C AEC-Q100 Level 2 automotive temperature range MAX13331GEE/V+T -40C to +105C 16 QSOP Set and are available in a 16-pin QSOP package. /V denotes an automotive qualified part. +Denotes a lead(Pb)-free/RoHS-compliant package. Applications T = Tape and reel. Automotive Entertainment Systems Automotive Rear Seat Entertainment Systems Typical Application Circuits appear at end of data sheet. Simplified Block Diagram Pin Configuration + INL 1 16 OUTL MAX13330 LEFT-CHANNEL SGND 2 15 PGND AUDIO IN INR 3 14 V SS MAX13330 SGND 4 13 OUTR MAX13331 V 5 12 DIAG CLICK-AND-POP DIAGNOSTICS DD SHDN SUPPRESSION OUTPUT SHDN 6 11 CPVSS CPVDD 7 10 C1N C1P PGND RIGHT-CHANNEL 8 9 AUDIO IN QSOP DirectDrive is a registered trademark of Maxim Integrated Products, Inc. 19-4341 Rev 5 3/21 OUTPUT PROTECTION AND DIAGNOSTICSMAX13330/MAX13331 Automotive DirectDrive Headphone Amplifiers with Output Protection and Diagnostics Absolute Maximum Ratings V , CPVDD to SGND ...........................................-0.3V to +6V C1N to PGND ............................................(V - 0.3V) to +0.3V DD SS V , CPVSS to SGND ............................................+0.3V to -6V Output Short-Circuit Duration ....................................Continuous SS V to CPVDD .....................................................-0.3V to +0.3V Continuous Power Dissipation (T = +70C) DD A V to CPVSS......................................................-0.3V to +0.3V QSOP (derate 9.6mW/C above +70C)) .................771.5mW SS SHDN, DIAG to SGND ............................. -0.3V to (V + 0.3V) Operating Temperature Range ......................... -40C to +105C DD OUT to PGND ...................................(V - 0.3V) to +45V Junction Temperature ......................................................+150C CPVSS IN to SGND (MAX13330) ............(V - 0.3V) to (V + 0.3V) Storage Temperature Range ............................ -65C to +150C SS DD IN to SGND (MAX13331) ....................... -0.3V to (V + 0.3V) Lead Temperature (soldering, 10s) .................................+300C DD C1P to PGND .....................................-0.3V to (V + 0.3V) Soldering Temperature (reflow) .......................................+260C CPVDD Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Package Thermal Characteristics (Note 1) QSOP Junction-to-Ambient Thermal Resistance ( ) .....103.7C/W JA Junction-to-Case Thermal Resistance ( ) ...............37C/W JC Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer board. For detailed information on package thermal considerations, refer to www.maximintegrated.com/thermal-tutorial. Electrical Characteristics (V = V = +5V, V = V = 0V, SHDN = V , C1 = C2 = 1F, R = , resistive load referenced to ground, for DD CPVDD SGND PGND DD L MAX13330 gain = -1.5V/V (internally set), for MAX13331 gain = -1.5V/V (R = 30k, R = 45k), T = T = -40C to +105C, unless IN FB A J otherwise noted. Typical values are at T = +25C, unless otherwise noted.) (Note 2) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS GENERAL Amplifier Supply Voltage Range V 4.0 5.5 V DD Charge-Pump Supply Voltage V 4.0 5.5 V CPVDD Range Charge-Pump Output Voltage V -V V CPVSS DD Quiescent Supply Current I R = 10 mA DD L Shutdown Supply Current I 10 A SHDN SHDN Input-Logic High V 2 V IH SHDN Input-Logic Low V 0.8 V IL SHDN Input Leakage Current -1 +1 A SHDN to Full Operation Time t 100 s SON DIAGNOSTICS 0.02 x No fault V DD OUTR short to 0.22 x 0.25 x 0.28 x SGND V V V DD DD DD R = , OUTL short to 0.47 x 0.50 x 0.53 x DIAG Diagnostic Output Voltage V V DIAG T = +25C SGND V V V A DD DD DD OUTR short to 0.72 x 0.75 x 0.78 x V V V V BAT DD DD DD OUTL short to 0.97 x V V BAT DD Maxim Integrated 2 www.maximintegrated.com