OPT301

® FPO 70% OPT301 INTEGRATED PHOTODIODE AND AMPLIFIER FEATURES q PHOTODIODE SIZE: 0.090 x 0.090 inch (2.29 x 2.29mm) q 1MΩ FEEDBACK RESISTOR q HIGH RESPONSIVITY: 0.47A/W (650nm) q IMPROVED UV RESPONSE q LOW DARK ERRORS: 2mV q BANDWIDTH: 4kHz q WIDE SUPPLY RANGE: ±2.25 to ±18V q LOW QUIESCENT CURRENT: 400µA q HERMETIC TO-99 DESCRIPTION The OPT301 is an opto-electronic integrated circuit containing a photodiode and transimpedance amplifier on a single dielectrically isolated chip. The transimpedance amplifier consists of a precision FETinput op amp and an on-chip metal film resistor. The 0.09 x 0.09 inch photodiode is operated at zero bias for excellent linearity and low dark current. The integrated combination of photodiode and transimpedance amplifier on a single chip eliminates the problems commonly encountered in discrete designs such as leakage current errors, noise pick-up and gain peaking due to stray capacitance. The OPT301 operates over a wide supply range (±2.25 to ±18V) and supply current is only 400µA. It is packaged in a hermetic TO-99 metal package with a glass window, and is specified for the –40°C to 85°C temperature range. APPLICATIONS q MEDICAL INSTRUMENTATION q LABORATORY INSTRUMENTATION q POSITION AND PROXIMITY SENSORS q PHOTOGRAPHIC ANALYZERS q SMOKE DETECTORS SPECTRAL RESPONSIVITY Green Yellow Blue Ultraviolet Red Infrared 2 1MΩ 40pF 0.5 Voltage Output (V/µW) 4 0.5 0.4 0.3 0.2 0.1 0 700 800 900 1000 1100 0.4 0.3 0.2 0.1 0 100 Using Internal 1M...