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| (R) LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier GENERAL DESCRIPTION The LY8895 is a 1.4 Watt audio power amplifier. And the LY8895 primarily designed for high quality application in other portable communication device. It is capable of driving 8 speaker load at a continuous average output of 1.4W / 10% distortion (THD+N) from a 5.0V power supply. A feature of the LY8895 amplifier to switch BTL mode and headphone mode (single-ended) is accomplished using the headphone sense pin. And the LY8895 audio amplifier features low power consumption shutdown mode. It is achieved by driving the shutdown pin with logic low. Besides the LY8895 has an internal thermal shutdown protection feature. The LY8895 amplifier was designed specifically to provide high quality output power with a minimal amount of external components. The LY8895 does not require output capacitors, and the LY8895 is ideally suited for other low voltage applications or portable electronic devices where minimal power consumption is a primary requirement. FEATURES 2.5V~5.5V Power supply. Thermal shutdown Protection. Low current shutdown mode No capacitors and networks or bootstrap capacitors required Low noise during turn-on and turn-off transitions Headphone amplifier mode. Lead free and green package available. (RoHS Compliant) Space Saving Package -- 8-pin MSOP package. APPLICATION Portable electronic devices Mobile Phones PDAs PIN CONFIGURATION Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 1 (R) LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier PIN DESCRIPTION SYMBOL SHUTDOWN PIN No. MSOP 1 2 3 4 5 6 7 8 Bypass pin Headphone sense pin Negative input Negative output Power supply Ground Positive output DESCRIPTION Shutdown the device.(when low level is active the pin) BYPASS HP SENSE -IN Vo1 VDD GND Vo2 APPLICATION CIRCUIT Figure 1. Audio Amplifier Typical Application Circuit Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 2 (R) LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier ABSOLUTE MAXIMUN RATINGS* PARAMETER Supply Voltage Operating Temperature Input Voltage Storage Temperature Power Dissipation ESD Susceptibility Junction Temperature Soldering Temperature (under 10 sec) SYMBOL VDD TA VI TSTG PD VESD TJMAX TSOLDER RATING 6.0 -40 to 85 (I grade) -0.3V to VDD +0.3V -65 to 150 Internally Limited 2000 150 260 UNIT V V W V DC ELECTRICAL CHARACTERISTICS (VDD=5V, TA=25) PARAMETER Power Supply Current Shutdown Current HP Sense high input voltage HP Sense low input voltage Wake-up time Output Offset Voltage SYMBOL IDD ISD VIH VIL TWU VOS TEST CONDITION VIN = 0V, IO = 0A, No Load VIN = 0V, IO = 0A, 8 Load VSHUTDOWN = 0V MIN. 0.8xVDD TYP. 3.5 4.0 0.1 176 7.0 1.4 MAX. UNIT 9.0 mA 10.0 mA 2.0 A V 0.2xVDD V ms 50.0 mV W Bypass cap. = 1.0uF Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio THD = 10% , f = 1 kHz RL = 8, HP Sense < 0.2xVDD THD = 1% , f = 1 kHz Po RL = 8, HP Sense < 0.2xVDD THD = 1% (max), f = 1kHz, RL = 32, HP Sense > 0.8xVDD THD+N Po = 0.4 Wrms; f = 1kHz PSRR Vripple = 200mV sine p-p Input terminated with 10 to GND TSD TSDT 8 load - 1.0 W - 90 0.13 62 (f = 217Hz) 66 (f = 1kHz) 170 1.0 mW % dB - Thermal Shutdown Temperature Shut Down Time 150 190 ms Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 3 (R) LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier DC ELECTRICAL CHARACTERISTICS (VDD=3V, TA=25) PARAMETER Power Supply Current Shutdown Current HP Sense high input voltage HP Sense low input voltage Output Offset Voltage Wake-up time SYMBOL IDD ISD VIH VIL VOS TWU TEST CONDITION VIN = 0V, IO = 0A, No Load VIN = 0V, IO = 0A, 8 Load VSHUTDOWN = 0V MIN. 0.8xVDD TYP. 3.0 3.5 0.1 7.0 114 0.46 MAX. UNIT 8.0 mA 9.0 mA 2.0 A V 0.2xVDD V 50.0 mV ms W Output Power Total Harmonic Distortion+ Noise Power Supply Rejection Ratio THD = 10% , f = 1 kHz RL = 8, HP Sense < 0.2xVDD THD = 1% , f = 1 kHz Po RL = 8, HP Sense < 0.2xVDD THD = 1% (max), f = 1kHz, RL = 32, HP Sense > 0.8xVDD THD+N Po = 0.25 Wrms , f = 1kHz PSRR Vripple = 200mV sine p-p Input terminated with 10 to GND TSD - 0.375 W - 35 0.13 56 (f = 217Hz) 62 (f = 1kHz) 170 - mW % dB Thermal Shutdown Temperature 150 190 ORDERING INFORMATION LY 8 895 VV V : Package Type UL8-Pin MSOP Product Name A : Product Line LY : Lyontek Product Number Prefix Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 4 (R) LY8895 Rev. 1.4 1.4 Watt Audio power Amplifier PACKAGE OUTLINE DIMENSION 8 pin 25.6 mil MSOP Package Outline Dimension Lyontek Inc. reserves the rights to change the specifications and products without notice. 5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan TEL: 886-3-6668838 FAX: 886-3-6668836 5 |
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