(Hong Kong)
Product Summary
The TSL230BPR is a programmable light-to-frequency converter. The TSL230BPR combines a configurable silicon photodiode and a current-to-frequency converter on single monolithic CMOS integrated circuits. The output can be either a pulse train or a square wave (50% duty cycle) with frequency directly proportional to light intensity. The sensitivity of the devices is selectable in three ranges, providing two decades of adjustment. The full-scale output frequency can be scaled by one of four preset values. All inputs and the output are TTL compatible, allowing direct two-way communication with a microcontroller for programming and output interface. An output enable (OE) is provided that places the output in the high-impedance state for multiple-unit sharing of a microcontroller input line. The TSL230BPR is available with absolute-output-frequency tolerance of ±5%. Each circuit has been temperature compensated for the ultraviolet-to-visible-light range of 300 nm to 700 nm. The TSL230BPR is characterized for operation over the temperature range of –25°C to 70°C.
Parametrics
TSL230BPR absolute maximum ratings: (1)Supply voltage, VDD: 6.5 V; (2)Input voltage range, all inputs, VI: –0.3 V to VDD + 0.3 V; (3)Operating free-air temperature range, TA: –25°C to 70°C; (4)Storage temperature range: –25°C to 85°C; (5)Lead temperature 1,6 mm (1/16 inch)from case for 10 seconds: 260°C.
Features
TSL230BPR features: (1)High-resolution conversion of light intensity to frequency with no external components; (2)Programmable sensitivity and full-scale output frequency; (3)Communicates directly with a microcontroller; (4)Single-supply operation down to 2.7 v, with power-down feature; (5)Absolute output frequency tolerance of ±5%; (6)Nonlinearity error typically 0.2% at 100 kHz; (7)Stable 100 ppm/°C temperature coefficient; (8)Advanced LinCMOS technology.
Diagrams
