OPT211

Features:

` WIDE BANDWIDTH, HIGH RESPONSIVITY:
                                      R<sub>F</sub>                 BANDWIDTH
                                     1MW            50kHz               *150kHz
                                     100MW          5kHz               *13kHz
                                                                   *with bootstrap buffer
` PHOTODIODE SIZE: 0.090 x 0.090 inch (2.29 x 2.29mm)
` HIGH RESPONSIVITY: 0.45A/W (650nm)
` LOW DARK ERRORS: 2mV max
` EXCELLENT SPECTRA` RESPONSE
` LOW QUIESCENT CURRENT: 400A
` TRANSPARENT 8-PIN DIP


Application

· MEDICAL INSTRUMENTATION
· LABORATORY INSTRUMENTATION
· POSITION AND PROXIMITY SENSORS
· PHOTOGRAPHIC ANALYZERS
· BARCODE SCANNERS
· SMOKE DETECTORS


Pinout




Specifications

Supply Voltage ................................................................................... ±18V
Input Voltage Range ............................................................................ ±V_S
Output Short-Circuit (to ground) ............................................... Continuous
Operating Temperature ...................................................... 25 to +85
Storage Temperature ......................................................... 25 to +85
Junction Temperature ........................................................................ +85
Lead Temperature (soldering, 10s) ................................................. +300
(Vapor-Phase Soldering Not Recommended)


Description

The OPT211 is a monolithic photodiode with on-chip FET-input transpedance amplifier, that provides wide bandwidth at very high gains. Uncommitted input and feedback nodes allow a variety of feedback options for maximum versatility. Trade-offs in responsivity (gain), bandwidth and SNR can easily be made.

The monolithic combination of OPT211 photodiode and transimpedance amplifier on a single chip eliminates the problems commonly encountered in discrete designs such as leakage current errors, noise pickup and gain peaking due to stray capacitance. The 0.09 x 0.09 inch photodiode is operated at zero bias for excellent linearity and low dark current. Direct access to the detector's anode allows photodiode bootstrapping, which increases speed performance.

The OPT211 operates over a wide supply range (±2.25V to ±18V) and supply current is only 400A. It is packaged in a transparent plastic 8-pin DIP specified for the 0 to 70 temperature range.