HMC544_08 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – GaAs MMIC T/R SWITCH, DC - 4 GHz

v00.0206
Typical Application Circuit
HMC544 / 544E
GaAs MMIC T/R SWITCH,
DC - 4.0 GHz
10
Notes:
1. Set logic gate Vdd = +3V to +5V and use HCT series logic to provide a TTL driver interface.
2. Control inputs A/B can be driven directly with CMOS logic (HC) with Vdd of +3V to +5V applied to the CMOS logic gates.
3. DC Blocking capacitors are required for each RF port as shown. Capacitor value determines lowest frequency of operation.
Pin Descriptions
Pin Number
Function
1, 3, 5
RF2, RF1, RFC
Description
These pins are DC coupled and matched to 50 Ohms.
Blocking capacitors are required.
2
GND
This pin must be connected to RF/DC ground.
4
B
See truth and control voltage tables.
6
A
See truth and control voltage tables.
Interface Schematic
10 - 304
For price, delivery, and to place orders, please contact Hittite Microwave Corporation:
20 Alpha Road, Chelmsford, MA 01824 Phone: [phone] Fax: [phone]
Order On-line at www.hittite.com