GS3019 Datasheet | Gennum Corporation

.. GS3019 Hybrid with LS509 Amplifier - HYB DATA SHEET Features - Gennum’s LS509 3 stage amplifier - independent preamp can be used as telecoil preamplifier - four “must use” capacitors mounted on hybrid - choice of 5 settings for optimal transducer current - easy assembly and high reliability STANDARD PACKAGING - Hybrid Typical Dimensions 0.276 in x 0.101 in x 0.094 in (7.01 mm x 2.57 mm x 2.39 mm) DESCRIPTION The hybrid consists of Gennum's LS509 class A amplifier, four capacitors, and two selectable bias resistors. This hybrid is very similar to Gennum's 3010 with the exception that capacitors C2 and C3 on the GS3019 have been increased in value to extend the frequency response of the system. VB 8 VCC 8 VMIC 15 GS3019 This hybrid is very similar to Gennum's 3010 with the exception that capacitors C2 and C3 on the GS3019 have been increased in value to extend the frequency response of the system. C2 and the output impedance of the microphone form a high pass filter with a corner frequency of approximately 180 Hz. The hybrid allows for easy adjustment of this corner frequency via the addition of ponents to its many additional solder pads. Likewise, R3 and C3 form a high pass filter with a corner frequency of 130 Hz. Altering this frequency is easily acplished by adding additional capacitance between pads 12 and 2 on the hybrid. Stage C of the LS509 is a class A current drive output. There is a fixed reference voltage of typically 29 m V at pin 2 of the chip (pad 5 of the hybrid). The current that flows in the receiver is the ratio of this 29 m V reference voltage to the resistance seen from pin 2 to ground. R1 and R2 have been included on the GS3019 to allow for easy adjustment of the current for the most monly used receivers. The system also has the capability of MPO (Maximum Power Output) control. This is provided by the Schottky diodes on the LS509 die. To make use of the diodes in the system, a potentiometer must be added from...