Transcription of LIGHT-TO-DIGITAL CONVERTER
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LIGHT-TO-DIGITAL CONVERTER
TSL2560, TSL2561 LIGHT-TO-DIGITAL CONVERTERTAOS059N MARCH 20091 The LUMENOLOGYr CompanyrrCopyright E 2009, TAOS Human Eye ResponseDProgrammable Interrupt Function withUser-Defined Upper and Lower ThresholdSettingsD16-Bit digital Output with SMBus (TSL2560)at 100 kHz or I2C (TSL2561) Fast-Mode at400 kHzDProgrammable analog Gain and IntegrationTime Supporting 1,000,000-to-1 DynamicRangeDAutomatically Rejects 50/60-Hz LightingRippleDLow Active Power ( mW Typical) withPower Down ModeDRoHS Compliant DescriptionThe TSL2560 and TSL2561 are light-to-digitalconverters that transform light intensity to a digitalsignal output capable of direct I2C (TSL2561) orSMBus (TSL2560) interface. Each device com-bines one broadband photodiode (visible plusinfrared) and one infrared-responding photodiodeon a single CMOS integrated circuit capable ofproviding a near-photopic response over aneffective 20-bit dynamic range (16-bit resolution).
analog-to-digital converters (ADC) that integrate currents from two photodiodes. Integration of both channels occurs simultaneously. Upon completion of the conversion cycle, the conversion result is transferred to the Channel 0 and Channel 1 data registers, respectively. The transfers are double-buffered to ensure that the
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