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1 2rms Audio Line Driver with Integrated Onech, 6 th Order SD ideo Filter Features Line Output: able to drive 600ohm and 10kΩ 2rms With 3.3 Supply oltage No Pop/Clicks Noise at the line outputt when Power ON/OFF No Need for Output DCBlocking Capacitors Accepting Differential Input SD Filter: Onech 6 th order 11MHz SD filters 6 Output Driver Gain and Drive Dual ideo Load Transparent Input Clamping AC or DC Coupled Inputs/Outputs Transparent Input Clamping Optimized Frequency Response between 20Hz 20kHz Applications DD Players ideo Amplifiers SetTop Boxes Personal ideo Recorders Communications Devices Descriptions Rev 1.0 The DIO2501 is an integrated solution for ideo driver and Audio driver, with two separated modules, the Audio Line Driver module and Onech 6 th order SD ideo filter driverr module. The Audio Line Driver allow for the removal of output AC coupling capacitors. It is designed to optimize the audio driver circuit performance while reducing the BOM cost by eliminating the peripheral discrete components for noise reduction. Featuring differential input mode, gain range of ±1 / to ±10 / can be achieved via external gain resistor setting. The 6 th order SD ideo filter driver provides improved image quality compared with passive LC filters and discrete drivers solution, especially suited for standard definition video signals. It can be directly driven by a DCcoupled DAC output or an ACcoupled signal. Internal diodelike clamps and bias circuitry may be used if ACcoupled inputs are required. The output can also drive AC or DC coupled single (150Ω) or dual (75Ω) loads. The DC coupling capacitors can be removed. Ordering Information Order Part Number Top Marking T A Package DIO2501CS14 DIO2501 Green/RoHS 40 to +85 C SOIC14 Tape & Reel, 2500

2 Pin Assignments Pin Description Pin Name CC IN INR OUTR EN SS CN CP DD CC IN INR OUTR EN SS CN SOIC14 1 1M H z, 6th Order Charge Pump Figure 1 Pin Assignment ideo filter driver power supply ideo filter driver Input Right channel Negative Input Right channel Outpu Enable input, activelow Supply voltage outpu Chargepump flying capacitor negative terminal Chargepump flying capacitor positive terminal Audio line driver positive supply OUT INL OUTL DD CP Description OUTL Left channel Output INL Left channel Negative Input OUT ideo filter driver Output

3 Block Diagram Absolute Maximum Ratings Stresses beyond those listed under Absolute Maximum Rating may cause permanent damage to the device. These are stress ratings only and functional operation of the device at thesee or any other condition beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maxim rating conditions for extended periods may affect device reliability. Parameter Rating Unit Supply oltage/cc 0 to 6.0 Supply oltage/dd 0. 3 to 4 Input oltage/in 0.3 to CC +0.3 Input oltage/inr,inl SS 0.3 to DD +0.3 Minimum load impedance 600 Ω EN to 0.3 to DD +0.3 Storage Temperature Range 65 to 150 C Junction Temperature 150 C Lead Temperature Range 260 C HBM ESD JEDEC: JESD22A114 Output Pins All Pins 8 5 k

4 Recommendedd Operating Conditions The Recommended Operating Conditions table defines the conditions for actual devicee operation to ensure optimal performance to the datasheet specifications. DIOO does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol DD CC IH IL T A Electrical Characteristics for the Audio Line Driverr module Typical value: T A = 25 C, unless otherwise specified. Symbol OS PSRR OH OL I IH I IL I DD O THD+N X TALK SNR Output Offset oltage Power supply rejection ratio High level outpu voltage Low level outpu voltage EN High level input current EN Low level input current Supply current Output oltage Total harmonic distortion + noise O =2 RMS, f=1khz Channel crosstalk Signal noise ratio Supply oltage Supply oltage EN High level Input oltage EN Low level Input oltage Operating Temperature Range Notes: The items below was divided into ideo filter module. Parameter Parameter DD =3.3, Input grounded, Unity gain DD =3.3 two parts, the Audio Line driver module and the SD DD =3.3, R L =10kΩ DD =3.3, R L =10kΩ DD =3.3, I = DD DD =3.3, I =0 DD =3.3, I = DD, No load Shutdown mode, D D=3.3 THD= 1%, DD =3.3, f=1khz O =2 RMS, f=1khz Conditions Min. O =2 RMS,BW=22kHz Aweighted Typ Min Max Typ Max. Unit % of DD % of DD C Unit m µa 1 µa ma RMS % C L Maximum capacitive load 220 pf N Noise output voltage BW=20Hz to 22kHz 10 µ RMS G BW Unity gain bandwidth 6.5 MHz A O Open loop voltage gain 165 f CP Charge pump frequency 300 khz

5 Electrical Characteristics for the SD ideo Filter module Typical value: T A = 25 C, CC=5, R SOURCE =37.5Ω, R L =150Ω loads; all inputs are AC couple with 0.1µF; all outputs are AC coupled with 220µF; unless otherwise specified. Symbol Parameter Conditions Min. Typ. Max. Unit DC ELECTRICAL CHARACTERISTICS I CC IN PSRR f 1 f 3 DG DP THD X TALK SNR CLG_SD CLD_SD Supply Current 8 12 ma ideo Input oltage Range 1.4 Power Supply Rejection 50 DYNAMIC PERFORMANCEE A Channel Gain Bandwidth MHz 3 Bandwidth MHz Filter Response Differential Gain Differential Phase Output Distortion Crosstalk Signal to Noise Ratio Group Delay Chroma Luma Gain Chroma Luma Delay Notes: SNR=20 log (714m / rms noise). Specifications subject to change without notice. f=27mhz % 0.36 f=1mhz f=1mhz % f=400khz, 6.5MHz f=3.58mhz ref to SD in at 400kHz f=3.58mhz ref to SD in at 400kHz ns % ns PP

6 Typical Application RIGHT INPUT ideo Processor RIGHT OUTPUT Mute GPIO vcc 1 470pF 6.8uF 15k 33k 100 k 3.3 OPTIONAL 10uF 30k Note: The value of C1 is recommendedd 2 to 4pF. Rs Application Notes 0.1uF 43k 47pF 0. 1uF 1µF GainSetting Resistors Ranges and InputBlocking Capacitors The gainsetting resistors, R IN and RFB, must be chosen so that noise, stability, and input capacitor size of the Audio Line Driver are kept within acceptable limits. oltage gain is defined as R FB divided by R IN. Table 1 lists the recommended resistor value for different gain settings. Selecting values that are too low demands a large input accoupling capacitor C IN. Selecting values that are too high increases the noise of the amplifier. The gainsetting resistor must be placed close to the input pins to minimize capacitive loading on these input pins and to ensuree maximum stability. Table 1 Resistor alues Recommended CC IN INR OUTR EN SS CN DIO2501 1µF OUT INL OUTL DD CP 43k 47pF 75Ω C1 30k 0.1uF 75ΩΩ ideo Cables 470pF 15k 10uF 75Ω 6.8uF 3.3 Supply LEFT OUTPUT LEFT INPUT Input Res., Feedback R IN 22 kω Res., 22 kω Inverting Gain 1 / 15 kω 10 kω 30 kω 100 kω 2 / 10 / Figure 2 Differential, Inverting and Noninverting Gain Configuration ns

7 DC inputblocking capacitors are required to be added in series with the audio signal into the input pins of the Audio Line Driver. Thesee capacitors block the dc portion of the audio source and allow the Audio Line Driver inputs to be properly biased to provide maximum performance. Charge Pump Flying Capacitor and SS Capacitor The charge pump flying capacitor serves to transfer charge during the generation of the negative supply voltage. The SS capacitor must be at least equal to the charge pump capacitor in order to allow maximum charge transfer. LowESR capacitors are an ideal selection, and a value of 1μF is typical. Capacitor values that are smaller than 1μF can be used, but the maximum output voltage may be reduced and the device may not operate to specifications. Decoupling Capacitors The Audio Line Driver requires adequate power supply decoupling to ensure that the noise and total harmonic distortion (THD) are low. A good low equivalentseriesresistance (ESR) ceramic capacitor, typically 1μF, placed as close as possible to the device DDD lead works best. Placing this decoupling capacitor close to the Audio Line Driver is important for the performance of the amplifier. For filtering lowerfrequency noise signals, a 10μF or greater capacitor placed near the audio power amplifier would also help, but it is not required in most applications because of the high PSRRR of this device. PopFree PowerUp Popfree power up is ensured by keeping the EN (enable pin) low during powersupply ramp up and ramp down. The EN pin should be kept low until the input accoupling capacitors are fully charged before asserting the EN pin high to achieve popless power up. Figure 4 illustrates the preferred sequence. Supply Ramp Time for ACCoupling capacitors to charge DIO2501 Supply EN Figure 4 PowerUp Sequences Capacitive Load The Audio Line Driver has the ability to drive a high capacitive load up to 220 pf directly. Higher capacitive loads can be accepted by adding a series resistor of 47 Ω or larger.

8 Physical Dimensions: SOIC14 COMMON DIMENSIONSS (UNITS OF MEASURE=MILLIMETER) Symbol A A1 A2 A3 b b1 c c1 D E E1 e L L1 L2 R R1 h Θ Θ1 Θ2 Θ3 Θ4 MIN NOM BSC REF 0.25BSC MAX

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