Amplifier Circuits: 
High Frequency / High Speed Circuits  Wide Band Circuits

BROAD BAND 2MHz OPTICAL FIBER RECEIVER (31)  (2mhzrvr1)
If you need more sensitivity than the above circuit this circuit provides about ten times more gain. It too is designed around an inexpensive plastic optical fiber detector.

20MHz VCSEL 3mW LASER TEST CIRCUIT (58) (20mhzlsr)
This circuit takes advantage of some new vertical cavity surface emitting lasers (VCSEL) that don’t require light output control circuits. The circuit shows how to drive the device from a single high speed CMOS IC. The circuit can easily be modified to transmit signals from kilohertz to about 50MHz.

10MHz TO 20MHz LASER LIGHT DETECTOR (61) (20mrvr2)
This circuit was originally designed to detect laser light pulses for an optical Ethernet communications system. It has good ambient light immunity.

FET INPUT HIGH SPEED LIGHT DETECTOR (69) (fetamp0)
This circuit is yet another design that converts current from a PIN photo diode to a voltage.   It has a bandwidth that extends beyond 50MHz.

C-MOS INVERTER MAKES LOW POWER AMP (95) (invertamp1)
With the addition of one resistor and a capacitor, some common logic ICs can be transformed from digital to analog duties.  This circuit outlines some the features to expect from different inverter ICs.