Pin Diode Switch Driver Ic

This is unlike a standard diode which has no intrinsic region.

Pin diode switch driver ic.

Inputs are compatible with standard logic families. High speed analog cmos technology is used to achieve low power consumption at moderate speeds. Power supplies to successfully operate the sp2t pin diode switches from 20 6 000 mhz for 100 w c w. Or peak power levels.

It has a wide undoped intrinsic semiconductor region i sandwiched between a p type semiconductor p and an n type semiconductor region n hence the pin designation. These pin diode drivers operate from 5v and 15v to 200v d c. Macom s madr 007097 000100 is a spdt driver used to interface between ttl logic signals and pin diode based microwave switches. The pin diode is a special diode which can be configured as an rf switch.

The wide intrinsic region is in contrast to an ordinary p n diode the wide intrinsic region makes the pin diode an inferior rectifier one typical. Low output resistances allow it to develop high output current spikes to ensure fast switching speeds. Application of the dh0035 as a pin diode driver the dh0035 is specifically designed to provide both the cur rent levels and timing intervals required to optimally drive pin diode switches. Drivers are typically used to translate ttl control voltages for rf and microwave attenuators and switches.

This driver function can be rendered as a discrete design or with specialized ics to fit the application. In addition the driver can supply current of 50 ma from the 200v. Macom s cmos switch drivers are used extensively in wireless infrastructure base stations as well as aerospace and defense applications. Microsemi s switch drivers contain internal spiking and decoupling capacitors.

Its schematic is shown in figure 5. The p type and n type regions are typically heavily doped because they are used for ohmic contacts. A pin diode is a diode with a wide undoped intrinsic semiconductor region between a p type semiconductor and an n type semiconductor region. The device utilizes a complementary ttl input buffer such as the dm7830 dm8830 or dm5440 dm7440 for its input signals.

External negative supply voltages may be as high as 18 volts. The subject of driver circuits for pin diode switches and attenuator circuits is always relevant to any practical component design and thus has been included in a separate appendix.