M537 MA-COM | Alldatasheet
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Visit www.macomtech.com for additional data sheets and product information. changes to the product(s) or information contained herein without notice. Figure 5. Switching Parameters the range of usable input power levels. specification is that the device is “cold switched”. absence of power. This is an important consideration. points (typically second and third order) of a device.
GaAs MMIC Based Control Components with Integral Drivers Rev. V5 Application Note M537 Visit www.macomtech.com for additional data sheets and product information. M/A-COM Technology Solutions Inc. and its affiliates reserve the right to make changes to the product(s) or information contained herein without notice. Internal Driver Circuitry To realize the performance parameters outlined in this application note, the GaAs MESFETs must be driven with complementary voltages in the range of 0 to -0.2 volts and -5 to -8 volts. M/A-COM’s switch family accomplishes this with an integral ASIC driver. The integral driver is configured to be compatible with TTL or CMOS input signals. The ASIC chip driver technology results in very low power consumption (10 mW at nominal voltages) and quiescent current (1 mA max from either power supply). Despite low power consumption, the devices have typical switching speeds of 12 - 18 nSec (including driver delay). Inclusion of a driver greatly simplifies the integration of the switches into systems. The user needs only to supply the recommended bias voltages and control signals, and the switch is operational. For more detailed information on the M/A-COM GaAs FET ASIC driver, contact M/A-COM. Distortion is a measure of the non-linearity of a de- vice. GaAs FET based switches offer significant ad- vantages in performance over PIN diode based switches. Distortion arises when non-linearities in de- vice operation are introduced. Non-linearities result from time-varying changes in resistance or capaci- tance of a device. Since GaAs MESFET switches are voltage controlled, they are less susceptible to modu- lation at normal operating power levels. This results in superior distortion performance.