Optical disc ICs Headphone amplifier with internal LPF and EVR for CD-ROM BA3530FS The BAS530FS is an H/P amplifier with internal secondary LPF and EVA circuits. When multibit output from a D/A converter is input, the secondary LPF outputs an audio signal. The amplifier circuit allows for line output and head- phone output. The output level for headphones can be changed with the EVR circuit. This IC also has independent internal mute circuits for the left and right channels. @Applications CD-ROM drives and other products (with line and headphone output pins) that process digital audio signals @Features 1) Internal LPF, line amplifier and EVR, 2) Internal mute function. 3) Internal thermal shutdown circuit. @Absolute maximum ratings (Ta=25C) 4) No attached components are needed for oscilla- tion prevention, even at aload of 89. 5) Mute function reduces the popping noises that can occur when the power is turned on and off. Parameter Symbol Lirnits Unit Power supply voltage 6.5 Vv Power dissipation 500 * mW Operating temperature Topr 10~75 c Storage temperature Tstg 55-~125 Cc * Reduced by 5.0 mW for each increase In Ta of 1C over 25C. @Aecommended operating conditions Parameter Symbol Min. Typ. Max. Unit Power supply voltage Vcc 45 _ 5.5 Vv 136S| 381q jeoud _ O) 98Iq feonag WOH-CO 40) susyidwy euoydpesy f | SWOH-09/809 104 a LL o oO uw o <q a lo| te} Le} Le] Le] Le] Le] Le] = w Qo Q ope oT & af 8 Ol 137Optical disc ICs BA3530FS @ Electrical characteristics (unless otherwise noted, Ta=25C, Vee=5.0V, line Au =50k9, H/P Ri2=320, Vin=0.8Vims, f=:1kHz, EVR Max.} Parameter Symbol Min. Typ. Max. Unit Conditions Quiescent current la i 11 18 mA Vin=O0Vims Mute pin thrashold voltage Vim 0.3 1.0 1.6 V MUTE, 2 <Line out) Voltage gain 1 veut -1.0 0.0 0.5 dB Voltage gain 2 Gvow2 1.5 0.0 0.5 dB f=20kH2 Interchannel gain differential} 4 Gvor 0.5 0 0.5 dB Total harmonic distortion THDL - 0.03 0.1 % BW=20--20kHz Maximum output voltage VomL 0.7 0.8 0.9 Vis THD<0.1% Output noise voltage Vnnot -- 95 85 dBV | BW = 20-20kHz, input = open Channel separation CSL 60 65 - dB Mute attenuation ATTL 65 75 - dB Single channel input Ripple rejection RAL 50 55 _ dB | fan=100Hz, Ver =20dBV Headphone amplifier) Voltage gain Gver i5 0.0 1.0 dB Intarchannel gain differential| AGvc 0.5 0 05 dB Total harmonic distortion THDH -- 0.04 0.1 % BW=20-~20kHz Rated output 1 Por 14 20 25 mw | AL=320, THD<0.1% Rated output 2 Poz 28 40 50 my RL=16@, THD<0.1% Output noisa voltage Vnou - 85 B8d dBV BW = 20-20kHz, input = open Channel Separation CSH 79 75 _ dB Mute attenuation ATTH 85 90 _ dB | Single channel input Ripple rejection -RRH 45 | 50 | dB | faa=100Hz, Vaa=20dBV EVR attenuation ATT 65 75 dB EVR=Max.~ Min. 138 ROAMSol 9sIq Jeando BA3530FS Optical disc ICs @Measurement circuit WOH-O9 JO} sxsylduiy suoydpes} Se SWOH-05/Sd9 404 380 ely TSD 7 8 + L 330 ws Symnt 50k 1 2 3a 1onmF 10K. 3 150k Fig. 1 139Optical disc ICs BA3530FS @ Application example IN1 MUTE LINE1 (Low ; Mute) 100 wi 104 + IT 1.04 a] [fs 150k | | BIAS) 44 150k 1 2 IN2_ | MUTE2 LINE? (Low : Mute) Fig. 2 140 ROoHMOptical disc ICs @Operation notes 1. Preventing popping noises The BA3530FS has a mute function that reduces the turned on or off. The popping noises that occur when the muting function turns on and off can be reduced by attaching a capacitor and rasistor to the mute pins (pins 3 and 14). BIAS (16 pin) 2. Recommended time chart popping noises that can occur when the power is Veo (9 pin) fo BA3530FS Optical Disc ICs MUTE1, 2 (3, 14 pin) @Electrical characteristic curves a 8 37 _ =z = -10 & 8 & = 8 i & > e a ?0 ~ 1 2 3 FREQUENCY : f (Hz) VOLUME CONTROL VOLTAGE: Vo (V) Fig. 4 Voltage gain vs. ; Fig. 5 EVR attenuation frequency characteristics characteristic @External dimensions (Units: mm) 6.60.2 Ha a REARA a] a fil 4 a] =| ilo JHHSEEE s lt e i 2 T i 5 _08_ 0.96:E0.1 0.3Min, SSOP-A16- Fig, 3 Pot, 2 (7, 10phn) WW) TA) 141 For CDs/CD-ROMs | | Headphone Amplifiers for. GD-ROMNotes The contents described in this catalogue are correct as of March 1997. No unauthorized transmission or reproduction cf this book, either in whole or in part, is permitted. The contents of this book are subject to change without notice. Always verify before use that the contents are the latest specifications. If, by any chance, a defect should arise in the equipment as a result of use without verification of the specifications, ROHM CO., LTD., can bear no responsibility whatsoever. Application circuit diagrams and circuit constants contained in this data book are shown as examples of standard use and operation. When designing for mass production, please pay careful attention to peripheral conditions. Any and all data, including, but not limited to application, circuit diagrams, information, and various data, described in this catalogue are intended only as illustrations of such devices and not as the specifications for such devices, ROHM CO., LTD., disclaims any warranty that any use of such device shall be free from infringement of any third partys intellectual property rights or other proprietary rights, and further, assumes absolutely no liability in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices; other than for the buyer's right to use such devices itself, resell or otherwise dispose of the same; no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD., is granted to any such buyer. The products in this manual are manufactured with silicon as the main material. The products in this manual are not of radiation resistant design. The products listed in this catalogue ar designed to be used with ordinary electronic equip- ment or devices (such as audio-visual equipment, office-automation equipment, communica- tions devices, electrical appliances, and elactronic toys). Should you intend to use these prod- ucts with equipment or devices which require an extremely high level of reliability and the malfunction of which would directly endanger human life (such as medical instruments, trans- portation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers, or oth- er safety devices) please be sure to consult with our sales representatives in advance. | Notes when exporting It is essential to obtain export permission when exporting any of the above products when it falls under the category of strategic material (or labor) as determined by foreign exchange or foreign trade control laws. oo * Please be sure to consult with our salas representatives to ascertain whether any prod- uctis classified as a strategic material.