Features: · High-Resolution Conversion of Light Intensity to Frequency With No External Components
· Programmable Sensitivity and Full-Scale Output Frequency
· Communicates Directly With a Microcontroller
· Single-Supply Operation Down to 2.7 V,With Power-Down Feature
· Absolute Output Frequency Tolerance of ±5% (TSL230BR−LF)
· Nonlinearity Error Typically 0.2% at 100 kHz
· Stable 150 ppm/°C Temperature Coefficient
· Replacements for TSL230, TSL230R,TSL230A, TSL230AR, TSL230B and TSL230BR
· RoHS CompliantPinout
SpecificationsSupply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 V
Input voltage range, all inputs, VI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−0.3 V to VDD + 0.3 V
Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −25°C to 85°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds‡ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† Stresses beyond those listed under "absolute maximum ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "recommended operating conditions" is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
‡ Not recommended for solder reflow.
NOTE 1: All voltage values are with respect to GND.
DescriptionThe TSL230R−LF, TSL230AR−LF, and TSL230BR−LF programmable light-to-frequency converters combine 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. Device sensitivity 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 TSL230R−LF is available with absolute-output-frequency tolerances of ±5% (TSL230BR−LF), ±10% (TSL230AR−LF), or ±20% (TSL230R−LF). They have been temperature compensated for the ultraviolet-to-visible light range of 320 nm to 700 nm and respond over the light range of 320 nm to 1050 nm.
The TSL230R−LF is characterized over the temperature range of −25°C to 70°C.
TSL230R−LF, Data Sheet
