MAX9597 19-4159 Rev 1 10/08 Low-Power Audio/Video Interface for Single SCART Connectors General Description Features The MAX9597 single SCART interface routes audio and 53mW Quiescent Power Consumption video signals between a set-top box decoder chip and 5W Shutdown Consumption 2 an external SCART connector under I C control. Operating from a 3.3V supply and a 12V supply, the Audio Operational Amplifiers to Create Input MAX9597 consumes 53mW during quiescent operation Filters and 254mW during average operation when driving Clickless/Popless, DirectDrive Audio typical signals into typical loads. The MAX9597 audio section contains left and right audio Video Reconstruction Filter with 10MHz Passband paths with an independent operational amplifier at the and 43dB Attenuation at 27MHz inputs. The DirectDrive output amplifiers create a 3.3V and 12V Supply Voltages 2V full-scale audio signal biased around ground, RMS eliminating the need for bulky output capacitors and Ordering Information reducing click-and-pop noise. The zero-cross detection circuitry also further reduces clicks and pops by PART TEMP RANGE PIN-PACKAGE enabling audio sources to switch only during a zero- MAX9597CTI+ 0C to +70C 28 TQFN-EP* crossing. +Denotes a lead-free/RoHS-compliant package. The MAX9597 video section contains 4 channels of *EP = Exposed pad. video filter amplifiers. The standard-definition video sig- nals from the set-top box decoder chip are lowpass fil- Applications tered to remove out-of-bandwidth artifacts. The Set-Top Boxes TVs MAX9597 also supports slow-switching and fast-switch- ing signals. AV Receivers DVD Players The MAX9597 is available in a compact 28-pin thin DirectDrive is a registered trademark of Maxim Integrated QFN package and is specified over the 0C to +70C Products, Inc. commercial temperature range. System Block Diagram V V V 12 ID AUD 12V 3.3V 3.3V MAX9597 STB CHIP 2 I C INTERFACE 2 I C AND REGISTERS C RGB, Y/C, CVBS TV L/R AUDIO VIDEO FILTERS SCART FAST AND SLOW SWITCHING RGB, Y/C, CVBS VIDEO ENCODER AUDIO WITH DirectDrive OUTPUTS SINGLE OR DIFFERENTIAL STEREO STEREO AUDIO AUDIO DAC SLOW SWITCHING FAST SWITCHING CHARGE PUMP EP GND Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. EVALUATION KIT AVAILABLELow-Power Audio/Video Interface for Single SCART Connectors ABSOLUTE MAXIMUM RATINGS (All voltages referenced to GND, unless otherwise noted.) Output Short-Circuit Current Duration V ..........................................................................-0.3V to +4V All Video Outputs, TV FS OUT to V , GND........Continuous VID VID V to EP ................................................................-0.3V to +14V Audio Outputs to V , EP ....................................Continuous 12 AUD V to EP ...............................................................-0.3V to +4V TV SS OUT to V , EP...........................................Continuous AUD 12 EP to GND .............................................................-0.1V to +0.1V Continuous Power Dissipation (T = +70C) A All Video Inputs .......................................................-0.3V to +4V 28-Pin Thin QFN All Audio Inputs to EP .............................(V - 1)V to (V + 1)V (derate 21.3mW/C above +70C)...........................1702mW EP EP SDA, SCL, DEV ADDR ............................................-0.3V to +4V Operating Temperature Range ..............................0C to +70C TV SS OUT.................................................-0.3V to (V + 0.3V) Junction Temperature .....................................................+150C 12 Current Storage Temperature Range .............................-65C to +150C All Video/Audio Inputs ..................................................20mA Lead Temperature (soldering, 10s) .................................+300C C1P, C1N, CPVSS ........................................................50mA 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. ELECTRICAL CHARACTERISTICS (V = V = 3.3V, V = 12V, GND = EP = 0, no load, T = 0C to +70C, unless otherwise noted. Typical values are at VID AUD 12 A T = +25C.) (Note 1) A PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Inferred from video PSRR test at 3.0V and Video Supply Voltage Range V 3.0 3.3 3.6 V VID 3.6V Inferred from audio PSRR tests at 3.0V and Audio Supply Voltage Range V 3.0 3.3 3.6 V AUD 3.6V Slow-Switching Supply Voltage V Inferred from slow-switching levels 11.4 12 12.6 V 12 Range Normal operation, all video output 13 20 mA amplifiers are enabled V Quiescent Supply Current I VID VID Q Shutdown 1 10 A Normal operation 3 4.1 mA V Quiescent Supply Current I AUD AUD Q Shutdown 0.01 10 A Normal operation 1.5 100 V Quiescent Supply Current I A 12 12 Q Shutdown 0.1 10 VIDEO CHARACTERISTICS DC-COUPLED INPUT V = 3V 1.15 VID R = 75 to GND or L Input Voltage Range V V 150 to V /2, V = 3.135V 1.2 IN VID VID P-P inferred from gain test V = 3.3V 1.3 VID Input Current I V = GND 2 3 A IN IN Input Resistance R 300 k IN AC-COUPLED INPUT Sync-Tip Clamp Level V Sync-tip clamp -5 0 6.1 mV CLP Sync-tip clamp percentage reduction in Sync Crush sync pulse (0.3V ) guaranteed by input 2% P-P clamping current measurement Input Clamping Current Sync-tip clamp 2 3 A 2 MAX9597