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| Optical disc ICs 1-channel BTL driver for CD players BA6195FP-Y / BA6195 The BA6195FP-Y and BA6195 are ICs for CD players and have one internal BTL power driver circuit and one operational amplifier circuit with a wide output dynamic range. The wide dynamic range and internal operational amplifier make these ICs ideal for low voltage drive. The driver's internal level shift circuit reduces the number of attached components needed. FApplications CD players, CD-ROM drives and other optical disc devices FFeatures 1) HSOP 25-pin power package allows for miniaturization of applications (BA6195FP-Y). 2) Wide dynamic range. (typically 5.4V when VCC = 8V, RL = 8) 3) Internal thermal shutdown circuit with hysteresis. 4) Internal level shift circuit, for a minimal number of attached components. 5) Internal operational amplifier with wide dynamic range. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) 185 Optical disc ICs FBlock diagram BA6195FP-Y / BA6195 FPin descriptions (BA6195) 186 Optical disc ICs FPin descriptions (BA6195FP-Y) BA6195FP-Y / BA6195 187 Optical disc ICs FInput / output circuits BA6195FP-Y / BA6195 Parentheses indicate pin numbers for BA6195FP-Y 188 Optical disc ICs BA6195FP-Y / BA6195 FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 8V, f = 1kHz, RL = 8) 189 Optical disc ICs FMeasurement circuit switch table BA6195FP-Y / BA6195 190 Optical disc ICs FMeasurement circuits BA6195 BA6195FP-Y / BA6195 191 Optical disc ICs BA6195FP-Y / BA6195 BA6195FP-Y 192 Optical disc ICs FApplication examples BA6195FP-Y / BA6195 193 Optical disc ICs BA6195FP-Y / BA6195 194 Optical disc ICs FOperation notes 1) The thermal shutdown circuit mutes the output current when the chip temperature rises above 175_C (typically). Hysteresis width is set at 25_C (typically), and muting is canceled when the chip temperature drops below 150_C. 2) The output current can be muted by raising the external mute pin above 2.0V. Pin 14 should be pulled down below 0.5V during normal operation. BA6195FP-Y / BA6195 3) Muting occurs during thermal shutdown and external muting. In each case, only the drivers are muted. During muting, the output pins remain at the internal bias voltage, roughly (VCC / 2). 4) Connect the IC to a 0.1F bypass capacitor to the power supply, at the base of the IC. 5) Connect the radiating fin to an external ground (BA6195FP-Y). FElectrical characteristic curves 195 Optical disc ICs FExternal dimensions (Units: mm) BA6195FP-Y / BA6195 196 |
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